Mitsubishi Electronics OC366 User Manual

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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

TECHNICAL & SERVICE MANUAL

HFC

utilized

R410A

December 2010

No. OC366

REVISED EDITION-F

[Model name]

(Standard type) PUMY-P36NHMU

PUMY-P48NHMU

(Salt proof type) PUMY-P36NHMU-BS

PUMY-P48NHMU-BS

[Service Ref.]

PUMY-P36NHMU PUMY-P36NHMUR1 PUMY-P48NHMU PUMY-P48NHMU1 PUMY-P48NHMU2 PUMY-P48NHMUR3

PUMY-P36NHMU-BS PUMY-P36NHMUR1-BS PUMY-P48NHMU-BS PUMY-P48NHMU PUMY-P48NHMU2-BS PUMY-P48NHMUR3-BS

OUTDOOR UNIT

Model name indication

Revision:

•

14. RoHS PARTS LIST has been modified in REVISED EDITION-F.

• Some descriptions have been modified.

• Please void OC366 REVISED EDITION-E.

Note :

• This service manual describes technical data of outdoor unit.

As for indoor units, refer to its

service manual.

• RoHS compliant products have <G> mark on the spec name plate.

1-BS

CONTENTS

1. TECHNICAL CHANGES

2. SAFETY PRECAUTION

3. OVERVIEW OF UNITS

4. SPECIFICATIONS

5. DATA

6. OUTLINES AND DIMENSIONS

7. WIRING DIAGRAM

9. TROUBLESHOOTING

10. ELECTRICAL WIRING

11. REFRIGERANT PIPING TASKS

12. DISASSEMBLY PROCEDURE

13. PARTS LIST

14. RoHS PARTS LIST

15. OPTIONAL PARTS

................................................................

NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION

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3 6

20 24

34 81 84

Revision:

"14. RoHS PARTS LIST " has been modiﬁ ed on page 98.

Page Revising point Service Ref. Incorrect Correct

STRUCTURAL PARTS

No. 1

SIDE PANEL(L)

STRUCTURAL PARTS

No. 4

BASE ASSY

STRUCTURAL PARTS

No. 5

MOTOR SUPPORT

STRUCTURAL PARTS

No. 7

COVER PANEL (FRONT)

STRUCTURAL PARTS

No. 8

COVER PANEL (REAR)

STRUCTURAL PARTS

No. 11

SERVICE PANEL

PUMY-P36NHMU(-BS)

PUMY-P48NHMU2(-BS)

PUMY-P36NHMU(-BS)

PUMY-P48NHMU2(-BS)

PUMY-P36NHMU(-BS)

PUMY-P48NHMU2(-BS)

PUMY-P36NHMU(-BS)

PUMY-P48NHMU2(-BS)

PUMY-P36NHMU(-BS)

PUMY-P48NHMU2(-BS)

PUMY-P36NHMU(-BS)

PUMY-P48NHMU2(-BS)

T7W E03 662 T7W E06 662

R01 E31 686 R01 E26 686

R01 E27 130 R01 E19 130

R01 E13 658 R01 E14 658

R01 E11 658 R01 E24 658

T7W E08 668 T7W E06 668

STRUCTURAL PARTS

No. 13

TOP PANEL

PUMY-P36NHMU(-BS)

PUMY-P48NHMU2(-BS)

R01 E14 641 R01 E29 641

TECHNICAL CHANGES

PUMY-P36NHMU PUMY-P36NHMUR1 PUMY-P36NHMU-BS PUMY-P36NHMUR1-BS PUMY-P48NHMU

2 PUMY-P48NHMUR3

PUMY-P48NHMU2-BS PUMY-P48NHMUR3-BS

• THERMISTOR has been changed. (Discharge thermistor → Compressor thermistor)

• Compressor has been changed.

PUMY-P48NHMU1 PUMY-P48NHMU2 PUMY-P48NHMU1-BS PUMY-P48NHMU2-BS

· Compressor (MC) and oil have been changed. ANB33FDCMT (Ester oil: MEL56) ANB33FDHMT(Ether oil: FV50S)

· Electrical parts have been changed. Multi controller board (MULTI. → C.B.) Noise filter circuit board (N.F.) Active filter module (ACTM) Relay (52C) , Resister (RS) (including N.F.)

PUMY-P48NHMU PUMY-P48NHMU1 PUMY-P48NHMU-BS PUMY-P48NHMU1-BS

• Primary heating ON/OFF control has been added.

1-1. PRIMARY HEATING ON/OFF CONTROL SET-UP

(1) Primary heating operation controls another heat source that depends on the main system's operations,

which means the interlock operation shown in "c)" will be possible.

Service ref. PUMY-P48NHMU(-BS)

Indoor unit must be R410A UL model for this function to operate.

Note: Following Indoor models DO NOT HAVE this feature available:

PMFY-P06NBMU PMFY-P08NBMU

c) Different Indoor unit applications that can be applied:

(2) Outdoor unit DIPSW4-4 for Primary Heating Control:

Set DIPSW4-4 when power is turned off at unit.

OFF:

Disable Primary Heating Function (Initial setting)

ON :

Enable Primary Heating Function

does not have this function.

PMFY-P12NBMU PKFY-P06NAMU PMFY-P15NBMU PKFY-P08NAMU

(3) Determine required Indoor Fans Speed during defrost mode:

a) With no Primary heating output the Indoor fan normally goes off to prevent cold drafts during the defrost cycles. b) With Primary heating control the auxiliary heat will be on during defrost mode, thus cold drafts will not be present. (Ducted units only) c) For models PEFY and PDFY (Ducted) recommended to use "Black" (20K) connector. d) For models PLFY, PCFY, PKFY and PFFY (Ductless) recommended "None", no connector required. e) To set the fan airflow rate to be used during defrost operation, insert the resistance that is packed within the optional adaptor cable kit (PAC-YU24HT-F) into the CN22 sensor input. You can choose at what speed the indoor fan operates during defrost cycles bases on chart below.

Fan airflow rate setting

During defrost operation

CN22 input resistance ()

CN22 input (cable color)

FAN SPEED SETTING

Note: The setting will be disabled "when Heater contact signal is OFF".

OFF

0 20k 27k 39k 62K

None Black Blue White Red

Setting on

Stopped

remote

controller

Very Low Low High

Wiring

CN22

(4) Determine Fan Airflow setting during Indoor Thermo OFF conditions:

a) These settings are done within Indoor DIPSW1-7 and DIPSW1-8, see chart below for options. b) Recommended SW1-7 OFF and SW1-8 ON will determine airflow based on "Setting on the remote controller".

Auxiliary Heating

Signal

Thermo Condition

SW1-7 SW1-8

OFF OFF Very low

ON OFF Low

OFF ON

Fan speed

setting

OFF ON

Setting on

remote

controller

Stopped

Fan speed

setting

Setting on

remote

controller

(5) Setting Outdoor unit and Auxiliary heat switch over temperatures.

When the DIPSW 4-4 is set to "ON", the outdoor unit and the contact output operates as shown below.

a) Outdoor default setting and operations are shown below:

Stage 1

mb. Decreasing - Outdoor unit HP operation

Amb. Increasing - Defrost : Heater contact ON signal

- Other than defrost : Contact OFF

Stage 2

- Outdoor unit HP operation

- Heater contact ON signal

Stage 3

- Outdoor unit OFF (Standby)

- Heater contact ON signal

-12:

[10F]

b 0:

[32F]

10:

[50F]

20:

[68F]

TH7 = Outdoor Temperature

When the set temperature ranges overlap, the previously set pattern (1,2 or 3) has a priority. The stage 1 has the highest priority, 2 the second and then 3.

b) Based on above chart listed the sequence of operation on "On Ambient Decrease"

Stage 1 :(TH7 = > 10 Stage 2 :(TH7 = 10

Stage 3 :(TH7 = < -12

) : the Outdoor unit runs in HP mode.

to -12:) : the Outdoor unit runs in HP mode with Auxiliary heating.

) : Auxiliary heating only (Outdoor unit is OFF).

c) Based on above chart listed the sequence of operation on " On Ambient Increase"

Stage 3 :(TH7 = < 0 Stage 2 :(TH7 = > 0

Stage 1 :(TH7 = > 20

) : Auxiliary heating only (Outdoor unit is OFF).

to 20:) : Auxiliary heating with Outdoor unit in HP mode. :

) : Outdoor unit in HP mode only.

(6) Locally procured wiring

A basic connection method is shown.

(i.e. interlocked operation with the electric heater with the fan speed setting on high

Remote control Board Relay circuit

ic Heater

Electr

power source

Electric Heater

Adapter

Red 1

White 2

Red 1

Red 2

Yello

Green

control board

CN24

CN22

Indoor unit

control board

Dip switch SW4-4 "ON"

Outdoor unit

Preparations in the field

Maximum cable length is 10 m (32ft)

For relay X use the specifications given below Operation coil

Rated voltage : 12VDC Power consumption : 0.9W or less

*Use the diode that is recommended by the relay manufacturer at both ends of the relay coil.

The length of the electrical wiring for the PAC-YU24HT is 2 meters (6-1/2 ft)

To extend this length, use sheathed 2-core cable.

Control cable type : CVV, CVS, CPEV or equivalent.

Cable size : 0.5 mm

~ 1.25 mm2 (AWG22 to AWG16)

Don`t extend the cable more than 10 meters (32ft).

Recommended circuit

Wiring diagram

1-phase power supply

208V, 230V/60Hz

Control board

88H

CN24

88H

FS1

FS2 FS1

FS2

26H

FS1, 2 ----- Thermal fuse

H1, H2 ----- Heater

26H --------- Overheat protection

88H --------- Electromagnetic contactor

thermostat

2 SAFETY PRECAUTION

2-1. CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilizing refrigerant R410A

Use new refrigerant pipes.

Avoid using thin pipes.

Make sure that the inside and outside of refrigerant piping is clean and it has no contaminants such as sulfur, oxides, dirt, shaving particles, etc, which are hazards to refrigerant cycle. In addition, use pipes with specified thickness.

Contamination inside refrigerant piping can cause deterioration of refrigerant oil etc.

Store the piping to be used indoors during installation, and both ends of the piping sealed until just before brazing. (Leave elbow joints, etc. in their packaging.)

If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor.

The refrigerant oil applied to flare and flange connections must be ester oil, ether oil or alkylbezene oil in a small amount.

If large amount of mineral oil enters, that can cause deterioration of refrigerant oil etc.

Charge refrigerant from liquid phase of gas cylinder.

If the refrigerant is charged from gas phase, composition change may occur in refrigerant and the efficiency will be lowered.

Do not use refrigerant other than R410A.

If other refrigerant (R22 etc.) is used, chlorine in refrigerant can cause deterioration of refrigerant oil etc.

Use a vacuum pump with a reverse flow check valve.

Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc.

Use the following tools specifically designed for use with R410A refrigerant.

The following tools are necessary to use R410A refrigerant.

Tools for R410A Gauge manifold Charge hose

Gas leak detector

Torque wrench

Flare tool Size adjustment gauge Vacuum pump adaptor

Electronic refrigerant charging scale

Handle tools with care.

If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of refrigerant will change and the efficiency will be lowered.

Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a flame, poisonous gases will be released.

[1] Cautions for service

(1) Perform service after recovering the refrigerant left in unit completely. (2) Do not release refrigerant in the air. (3) After completing service, charge the cycle with specified amount of refrigerant. (4) When performing service, install a filter drier simultaneously.

Be sure to use a filter drier for new refrigerant.

[2] Additional refrigerant charge

When charging directly from cylinder

· Check that cylinder for R410A on the market is syphon type.

· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)

Gravimeter

[3] Service tools

Use the below service tools as exclusive tools for R410A refrigerant.

No. Tool name Specifications

Gauge manifold · Only for R410A

· Use the existing fitting

· Use high-tension side pressure of 5.3MPa·G or over.

Charge hose · Only for R410A

· Use pressure performance of 5.09MPa·G or over.

Electronic scale

Gas leak detector · Attach on vacuum pump.

Adaptor for reverse flow check

Refrigerant charge base · Only for R410A · Top of cylinder (Pink)

Refrigerant recovery equipment

· Use the detector for R134a, R407C or R410A.

· Cylinder with syphon

specifications

—

Unit

2-2. PRECAUTIONS FOR SALT PROOF TYPE "-BS" MODEL

Although "-BS" model has been designed to be resistant to salt damage, observe the following precautions to maintain the performance of the unit.

1. Avoid installing the unit in a location where it will be exposed directly to seawater or sea breeze.

2. If the cover panel may become covered with salt, be sure to install the unit in a location where the salt will be washed away by rainwater. (If a sunshade is installed, rainwater may not clean the panel.)

3. To ensure that water does not collect in the base of the outdoor unit, make sure that the base is level, not at angle. Water collecting in the base of the outdoor unit could cause rust.

4. If the unit is installed in a coastal area, clean the unit with water regularly to remove any salt build-up.

5. If the unit is damaged during installation or maintenance, be sure to repair it.

6. Be sure to check the condition of the unit regularly.

7. Be sure to install the unit in a location with good drainage.

2-3. Cautions for refrigerant piping work

New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is

same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working pressure of R410A is 1.6 times higher than that of R22, their sizes of flared sections and flare nuts are different.

1 Thickness of pipes

Because the working pressure of R410A is higher compared to R22, be sure to use refrigerant piping with thickness shown below. (Never use pipes of 0.7 mm [7/256 inch] or below.)

Diagram below: Piping diameter and thickness

Nominal

dimensions[inch]

1/4 3/8 1/2 5/8 3/4

Outside

diameter

6.35

9.52

12.70

15.88

19.05

(mm)

Thickness

R410A R22

0.8 [1/32]

1.0 [5/128]

—

2 Dimensions of flare cutting and flare nut

The component molecules in HFC refrigerant are smaller compared to conventional refrigerants. In addition to that, R410A is a refrigerant, which has higher risk of leakage because its working pressure is higher than that of other refrigerants. Therefore, to enhance airtightness and intensity, flare cutting dimension of copper pipe for R410A has been specified separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for R410A also has partly been changed to increase intensity as shown below. Set copper pipe correctly referring to copper pipe flaring dimensions for R410A below. For 1/2 and 5/8 inch, the dimension B changes.

Use torque wrench corresponding to each dimension.

(mm) [inch]

0.8 [1/32]

1.0 [5/128]

Dimension A

Dimension B

Flare cutting dimensions

Nominal

dimensions[inch]

Outside

diameter 1/4 3/8 1/2 5/8 3/4

12.70

15.88

19.05

6.35

9.52

Dimension A

R410A R22

9.1 [11/32-23/64]

13.2 [1/2-33/64]

16.6 [41/64-21/32]

19.7 [49/64-25/32] —

(mm) [inch]

( )

-0.4

9.0

13.0

16.2

19.4

23.3

Flare nut dimensions

Nominal

dimensions[inch]

1/4 3/8 1/2 5/8 3/4

Outside

diameter[inch]

6.35

9.52

12.70

15.88

19.05

3 Tools for R410A (The following table shows whether conventional tools can be used or not.)

Tools and materials Use R410A tools Can R22 tools be used? Gauge manifold

Charge hose Gas leak detector

Refrigerant recovery equipment Refrigerant cylinder Applied oil

Safety charger

Charge valve

Vacuum pump

Flare tool

Bender Pipe cutter Welder and nitrogen gas cylinder Refrigerant charging scale Vacuum gauge or thermistor vacuum gauge and vacuum valve Charging cylinder

: Prepare a new tool. (Use the new tool as the tool exclusive for R410A.) : Tools for other refrigerants can be used under certain conditions. : Tools for other refrigerants can be used.

Air purge, refrigerant charge and operation check Gas leak check Refrigerant recovery Refrigerant charge Apply to flared section

Prevent compressor malfunction when charging refrigerant by spraying liquid refrigerant Prevent gas from blowing out when detaching charge hose Vacuum drying and air purge

Flaring work of piping

Bend the pipes Cut the pipes Weld the pipes Refrigerant charge Check the degree of vacuum. (Vacuum valve prevents back flow of oil and refrigerant to thermistor vacuum gauge) Refrigerant charge

Tool exclusive for R410A Tool exclusive for R410A Tool for HFC refrigerant Tool exclusive for R410A Tool exclusive for R410A

Ester oil, ether oil and alkylbenzene oil (minimum amount)

Tool exclusive for R410A

Tools for other refrigerants can be used if equipped with adopter for reverse flow check Tools for other refrigerants can be used by adjusting flaring dimension Tools for other refrigerants can be used Tools for other refrigerants can be used Tools for other refrigerants can be used Tools for other refrigerants can be used Tools for other refrigerants can be used

Tool exclusive for R410A

(Usable if equipped with adopter for rever se flow)

(Usable by adjusting flaring dimension)

(mm) [inch]

Dimension B

R410A R22

17.0 [43/64]

22.0 [7/8]

26.0 [1-3/64]

29.0 [1-9/64] —

Can R407C tools be used?

Ester oil, ether oil: Alkylbenzene oil: minimum amount

(Usable if equipped with adopter for rever se flow)

(Usable by adjusting flaring dimension)

17.0

22.0

24.0

27.0

36.0

3 OVERVIEW OF UNITS

3-1. UNIT CONSTRUCTION

Indoor unit that can be connected

Branching pipe components

Model

Capacity

NCMU-E NBMU-E NLMU-E NBMU-E NMLU-E NMHU-E NMSU-E NMU-E NAMU-E NGMU-E

06 08

12 15

18 24 27 30 36

48 54

Outdoor unit

Capacity

Number of units

Total system wide capacity

P36

Type 06 ~ Type 36

1~ 6 unit

50% ~130% of outdoor unit capacity

P48

Type 06 ~ Type 54

1~ 8 unit

CMY-Y62-G-E CMY-Y64-G-E CMY-Y68-G-E

Branch header

(2 branches)

Ceiling Cassette

4-way flow

PLFY-P PLFY-P PMFY-P PEFY-P PDFY-P PKFY-P PCFY-P PFFY-P PEFY-P

2-way flow

1-way flow

Ceiling Concealed mounted Wall Mounted

Branch header

(4 branches)

Ceiling

built-in Exposed

NFMU-E

Branch header

(8 branches)

Ceiling

Suspended

NGMU-E NEMU-E

Floor Standing

Concealed

NRMU-E

Ceiling

Concealed

(Fresh Air)*1

NMHU-E-F

Decorative panel

MA remote controller

PAR-21MAA

Remote

controller

Name

Model number

Functions

M-NET remote controller

PAR-F27MEA-US

• A handy remote controller for use in conjunction with the Melans centralized management system.

• Address setting is not necessary.

• Addresses must be set.

*1. It is possible only by 1:1 system. (1 indoor unit of Fresh Air type is connected with 1 outdoor unit.) Operating temperature range (outdoor temperature) for fresh air type indoor units differ from other indoor units. Refer to 3-2(2).

3-2. UNIT SPECIFICATIONS

(1) Method for identifying MULTI-S model

■

Indoor unit < When using Model 30 >

■

Outdoor unit <When using model 48 >

P L F Y - P 30 N B M U - E PU M Y - P 48 N H M U -BS

PAC type

L : Ceiling cassette K : Wall-mounted type E : Hidden skylight type C : Ceiling suspended type M : Ceiling cassette type F : Floor standing type

NEW frequency converter one-to-many air conditioners (flexible design type)

Indicates equivalent to Cooling capacity

Refrigerant R410A/R22 commonness

Frequency conversion controller

Unit model type

Power supply N: Single phase 208/230V 60Hz

(2) Operating temperature range

Cooling

Indoor-side intake air temperature

Outdoor-side intake air temperature

Notes D.B. : Dry Bulb Temperature W.B. : Wet Bulb Temperature *1. 10~46°C DB [50~115°FDB] : In case of connecting PKFY-P06/P08 type indoor unit.

W.B. 15~24°C [59~75°F]

D.B. -5~46°C [23~115°F]*1

Outdoor unit

Sub-number

UL model

M-NET control

MULTI-S

Frequency conversion controller

Indicates equivalent to Cooling capacity

Heating

D.B. 15~27°C [59~81°F]

W.B. -18~15°C [0~60°F]

Refrigerant R410A

UL model

M-NET control

Outdoor unit model type

Power supply

N: Single phase 208/230V 60Hz

Salt proof type

■ In case of connecting fresh air type indoor unit

Capacity of Fresh

air type indoor

Indoor-side and Outdoor-side intake air temperature

P30

P54

D.B.21~43[70~109°F] *2 W.B.15.5~35[60~95°F]

*2.Thermo-off(FAN-mode) automatically starts if the outdoor temp. is lower than 21D.B.[70°FD.B.]. *3.Thermo-off(FAN-mode) automatically starts if the outdoor temp. is higher than 20D.B.[68°FD.B.].

(3) Guaranteed voltage

198~253V, 60Hz

Cooling

D.B.-10~20[14~68°F] *3

D.B.-5~20[23~68°F] *3

Heating

4 SPECIFICATIONS

Item

Cooling Capacity Btu/h Heating Capacity Btu/h Input(Cool Input Current (Cool Power factor (Cool) Input(Heat Input Current (Heat Power factor (Heat)

EER(Cool COP (Heat Connectable indoor units (Max.

Max. Connectable Capacity Btu/h 46,800(130%

Power Supply Single phase ,60Hz,208/230V Breaker Size Max. fuse size Min.Circuit.Ampacity

Sound level (Cool/Heat

External finish Munsell 3Y 7.8/1.1 Refrigerant control Linear Expansion Valve Compressor Hermetic

Crankcase heater W —

Heat exchanger Plate fin coil (Anti corrosion fin treatment

Fan Fan(drive

Dimensions(H%W%D

Weight kg[lbs

Refrigerant R410A

Protection High pressure protection HP switch devices

Total Piping length (Max. Farthest m [ft] 80 [262] Max Height difference m [ft] 50 [164]*1 Chargeless length m [ft] 50 [164]

Guaranteed operation range

)

Model Motor output kW 2.2 Starting method Inverter

Fan motor output kW 0.086 + 0.086 Airflow m3/min[CFM] 100 [3,530]

Charge kg[lbs Oil(Model

Compressor protection

Fan motor protection Overheating/Voltage protection

Piping diameter

)

*3 *3

)

*3 *3 *3 *3

)

) %

No. Propeller fan % 2

)

Liquid :mm[inch] 9.52[3/8

Gas :mm[inch] 15.88[5/8

Rating conditions Cooling Indoor : D.B. 26.7°C / W.B. 19.4°C [D.B. 80°F / W.B. 67°F] Outdoor : D.B. 35°C [D.B. 95°F] Heating Indoor : D.B. 21.1°C [D.B. 70°F] Outdoor : D.B. 8.3°C / W.B. 6.1°C

Service Ref.

Btu/h/W

W/W

)

dB 49 / 51

Wmm[in.

Dmm[in. Hmm[in.

L [oz]

m [ft]

(

cool

(

heat

] ] ]

]

)

Note.*1. 20m [70ft] : In case of installing outdoor unit lower than indoor unit. *2. *3. Electrical data is for only outdoor unit. (In case of connecting 2 indoor units of PLFY-P18BM type) Btu/h=kW × 3,412 CFM=K/min × 35.31 lbs=kg/ 0.4536 *Above specification data is subject to rounding variation.

PUMY-P36NHMU(-BS) PUMY-P36NHMUR1(-BS)

36,000 40,000

3.22

14.23/15.74

98.4

2.93

12.88/14.24

98.9

11. 18

4.00 6

)

30A 40A 26A

ANB33FDHMT ANB33FDSMT

950 [37-13/32]

330+30 [13+1-3/16

1,350 [53-5/32

130 [287]

8.5[18.7

2.3 [73] (FV50S

Discharge thermo, Over current detection

120 [394]

-5~ 46 DB [23~115

-18~ 15 WB [0~60

)

]

)

Compressor thermo, Over current detection

]

F DB]*2

F WB]

10~46°C [50~115°F]DB : In case of connecting PKFY-P06/P08 type indoor unit.

[D.B. 47°F / W.B. 43°F]

)

Item

Service Ref.

Cooling Capacity Btu/h Heating Capacity Btu/h Input(Cool Input Current (Cool Power factor (Cool) Input(Heat Input Current (Heat Power factor (Heat) EER(Cool COP (Heat Connectable indoor units (Max.

)

*3 *3

)

*3 *3

)

*3 *3

kW 4.97

kW 4.88

A 23.6/21.3

Btu/h/W

W/W

)

Max. Connectable Capacity Btu/h 62,400(130%

PUMY-P48NHMU/NHMU1/NHMU2/NHMUR3(-BS)

48,000 54,000

24.0/21.7

99.5

9.66

3.24 8

)

Power Supply Single phase ,60Hz,208/230V Breaker Size Max. fuse size Min.Circuit.Ampacity Sound level (Cool/Heat

)

dB 50 / 52

30A 40A 26A

External finish Munsell 3Y 7.8/1.1 Refrigerant control Linear Expansion Valve Compressor Hermetic

Model

ANB33FDCMT(NHMU

(1)

), ANB33FDHMT(NHMU2), ANB33FDSMT(NHMUR3)

Motor output kW 2.4

Starting method Inverter Crankcase heater W — Heat exchanger Plate fin coil (Anti corrosion fin treatment

Fan Fan(drive

)

No. Propeller fan % 2

Fan motor output kW 0.086 + 0.086

Airflow m

Dimensions(H%W%D

)

Wmm[in.

Weight kg[lbs

/min[CFM] 100 [3,530]

]

Dmm[in. Hmm[in.

] ]

]

950 [37-13/32]

330+30 [13+1-3/16

1,350 [53-5/32

]

130 [287]

)

Refrigerant R410A

Charge kg[lbs

Oil(Model

)

L [oz]

]

8.5[18.7

2.3 [73] (MEL56/NHMU

]

(1), FV50S/NHMU2, NHMUR3)

Protection High pressure protection HP switch devices

Compressor protection

Discharge thermo,Over current detection(NHMU/NHMU

Compressor thermo,Over current detection(NHMUR3)

Fan motor protection Overheating/Voltage protection Total Piping length (Max.

)

m [ft]

120 [394] Farthest m [ft] 80 [262] Max Height difference m [ft] 50 [164]*1 Chargeless length m [ft] 50 [164]

Piping diameter

Guaranteed operation range

Liquid :mm[inch] 9.52[3/8

Gas :mm[inch] 15.88[5/8

(

cool

(

heat

) )

-5~ 46 DB [23~115°F DB]*2

-18~ 15 WB [0~60°F WB]

Note.*1. 20m[70ft] : In case of installing outdoor unit lower than indoor unit.

*2. 10~46°C[50~115°F]DB : In case of connecting PKFY-P06/P08 type indoor unit. *3. Electrical data is for only outdoor unit. (In case of connecting 2 indoor units of PLFY-P24BM type) Btu/h=kW × 3,412 CFM=K/min × 35.31 lbs=kg/ 0.4536 *Above specification data is subject to rounding variation.

]

[D.B. 47°F / W.B. 43°F]

)

1/NHMU2)

5 DATA

5-1. COOLING AND HEATING CAPACITY AND CHARACTERISTICS

5-1-1. Method for obtaining system cooling and heating capacity:

To obtain the system cooling and heating capacity and the electrical characteristics of the outdoor unit, first add up the ratings of all the indoor units connected to the outdoor unit (see table below), and then use this total to find the standard capacity with the help of the tables on 5-2. STANDARD CAPACITY DIAGRAM.

(1) Capacity of indoor unit

Model number for indoor unit

Model Capacity 6 8 12 15 18 24 27 30 36 48 54

(2) Sample calculation

1 System assembled from indoor and outdoor unit (in this example the total capacity of the indoor units is greater than that of

the outdoor unit)

• Outdoor unit PUMY-P48NHMU

• Indoor unit PKFY-P08NAMU-E o 2 , PLFY-P18NLMU-E o 2

2 According to the conditions in 1, the total capacity of the indoor unit will be: 8 o 2 + 18 o 2 = 52 3 The following figures are obtained from the 52 total capacity row of the standard capacity table (5-2.):

Capacity (Btu/h)

Cooling Heating Cooling Heating Cooling Heating

48,900

Model 06 Model 08 Model 12 Model 15 Model 18 Model 24 Model 27 Model 30 Model 36 Model 48 Model 54

54,500

Outdoor unit power consumption (kW)

5.01 4.71 21.9 20.6

Outdoor unit current (A)/230V

5-1-2. Method for obtaining the heating and cooling capacity of an indoor unit:

(1) The capacity of each indoor unit (Btu/h) = the capacity A (or B) o

(2) Sample calculation (using the system described above in 5-1-1. (2) ):

During cooling: During heating:

• The total model capacity of the indoor unit is: 8000 o 2 + 18000 o 2 = 52000Btu/h Therefore, the capacity of PKFY-P08NAMU-E and PLFY-P18NLMU-E will be calculated as follows by using the formula in 5-1-2. (1):

Model 08= 48,900 o = 7,520 Btu/h

Model 18= 48,900 o = 16,930 Btu/h

8000

52000

18000 52000

• The total model capacity of indoor unit is: 9000 o 2 + 20000 o 2 = 58000 Btu/h Therefore, the capacity of PKFY-P08NAMU-E and PLFY-P18NLMU-E will be calculated as follows by using the formula in 5-1-2. (1):

Model 08=54,500 o = 8,460 Btu/h

Model 18= 54,500 o = 18,790 Btu/h

total model capacity of all indoor units

model capacity

9000

58000

20000 58000

5-2. STANDARD CAPACITY DIAGRAM

* Before calculating the sum of total capacity of indoor units, please convert the value following the formula on 5-1-1.

5-2-1. PUMY-P36NHMU(-BS)/ PUMY-P36NHMUR1(-BS)

Total capacity of Indoor units*

18 18,000 20,200 1.38 1.45 6.1 6.4 6.8 7.1 19 19,000 21,300 1.45 1.52 6.4 6.7 7.1 7.4 20 20,000 22,400 1.52 1.60 6.7 7.0 7.4 7.8 21 21,000 23,500 1.60 1.67 7.1 7.4 7.8 8.1 22 22,000 24,700 1.68 1.75 7.4 7.7 8.2 8.5 23 23,000 25,800 1.76 1.83 7.8 8.0 8.6 8.9 24 24,000 26,900 1.85 1.91 8.2 8.4 9.0 9.3 25 25,000 28,000 1.94 1.98 8.6 8.7 9.5 9.6 26 26,000 29,200 2.04 2.06 9.0 9.1 9.9 10.0 27 27,000 30,300 2.14 2.15 9.4 9.4 10.4 10.4 28 28,000 31,400 2.24 2.23 9.9 9.8 10.9 10.8 29 29,000 32,500 2.35 2.31 10.4 10.2 11.5 11.2 30 30,000 33,700 2.46 2.40 10.9 10.5 12.0 11.7 31 31,000 34,800 2.58 2.48 11.4 10.9 12.6 12.1 32 32,000 35,900 2.70 2.57 11.9 11.3 13.2 12.5 33 33,000 37,000 2.82 2.66 12.5 11.7 13.8 12.9 34 34,000 38,200 2.95 2.75 13.0 12.1 14.4 13.4 35 35,000 39,300 3.08 2.84 13.6 12.5 15.1 13.8 36 36,000 40,000 3.22 2.93 14.2 12.9 15.7 14.2 37 36,200 40,200 3.23 2.92 14.3 12.9 15.8 14.2 38 36,400 40,400 3.25 2.89 14.3 12.7 15.9 14.1 39 36,600 40,700 3.26 2.86 14.4 12.6 15.9 13.9 40 36,900 40,900 3.27 2.84 14.5 12.5 16.0 13.8 41 37,100 41,100 3.28 2.81 14.5 12.3 16.0 13.6 42 37,300 41,300 3.30 2.78 14.6 12.2 16.1 13.5 43 37,500 41,600 3.31 2.75 14.6 12.1 16.2 13.4 44 37,700 41,800 3.32 2.72 14.7 11.9 16.2 13.2 45 37,900 42,000 3.34 2.69 14.7 11.8 16.3 13.1 46 38,100 42,200 3.35 2.66 14.8 11.7 16.4 12.9

Capacity(Btu/h)

Cooling Heating Cooling Heating Cooling Heating Cooling Heating

Power Consumption(kW)

Current(A)/230V Current(A)/208V

Note) In some combination patterns, numerical value of the heating data may differ slightly.

(CAPACITY : about several hundred Btu/h)

5-2-2. PUMY-P48NHMU/NHMU1/NHMU2/NHMUR3(-BS)

Total capacity of Indoor units*

24 24,000 26,900 2.11 2.32 9.2 10.2 10.2 11.2 25 25,000 28,000 2.20 2.41 9.6 10.5 10.6 11.6 26 26,000 29,200 2.29 2.50 10.0 10.9 11.1 12.1 27 27,000 30,300 2.38 2.59 10.4 11.3 11.5 12.5 28 28,000 31,400 2.48 2.68 10.8 11.7 12.0 13.0 29 29,000 32,500 2.58 2.78 11.3 12.1 12.4 13.4 30 30,000 33,700 2.68 2.87 11.7 12.6 12.9 13.9 31 31,000 34,800 2.78 2.97 12.2 13.0 13.4 14.4 32 32,000 35,900 2.89 3.07 12.6 13.4 14.0 14.8 33 33,000 37,000 3.00 3.17 13.1 13.9 14.5 15.3 34 34,000 38,200 3.11 3.28 13.6 14.3 15.0 15.8 35 35,000 39,300 3.23 3.38 14.1 14.8 15.6 16.3 36 36,000 40,400 3.35 3.49 14.6 15.2 16.2 16.9 37 37,000 41,500 3.47 3.60 15.2 15.7 16.8 17.4 38 38,000 42,700 3.60 3.71 15.7 16.2 17.4 17.9 39 39,000 43,800 3.72 3.82 16.3 16.7 18.0 18.5 40 40,000 44,900 3.85 3.93 16.8 17.2 18.6 19.0 41 41,000 46,000 3.99 4.05 17.4 17.7 19.3 19.6 42 42,000 47,200 4.12 4.17 18.0 18.2 19.9 20.1 43 43,000 48,300 4.26 4.28 18.6 18.7 20.6 20.7 44 44,000 49,400 4.41 4.41 19.3 19.3 21.3 21.3 45 45,000 50,500 4.55 4.53 19.9 19.8 22.0 21.9 46 46,000 51,700 4.70 4.65 20.5 20.3 22.7 22.5 47 47,000 52,800 4.85 4.78 21.2 20.9 23.4 23.1 48 48,000 54,000 4.97 4.88 21.7 21.3 24.0 23.6 49 48,300 54,200 4.98 4.83 21.8 21.1 24.1 23.3 50 48,500 54,300 4.99 4.79 21.8 20.9 24.1 23.2 51 48,700 54,400 5.00 4.75 21.8 20.8 24.1 23.0 52 48,900 54,500 5.01 4.71 21.9 20.6 24.2 22.8 53 49,100 54,600 5.01 4.67 21.9 20.4 24.2 22.6 54 49,300 54,800 5.02 4.63 21.9 20.2 24.3 22.4 55 49,600 54,900 5.03 4.59 22.0 20.1 24.3 22.2 56 49,800 55,000 5.04 4.55 22.0 19.9 24.3 22.0 57 50,000 55,100 5.04 4.51 22.0 19.7 24.4 21.8 58 50,200 55,200 5.05 4.47 22.1 19.5 24.4 21.6 59 50,400 55,300 5.06 4.43 22.1 19.4 24.4 21.4 60 50,600 55,500 5.07 4.39 22.1 19.2 24.5 21.2 61 50,800 55,600 5.07 4.35 22.2 19.0 24.5 21.0 62 51,100 55,700 5.08 4.31 22.2 18.8 24.6 20.8

Note) In some combination patterns, numerical value of the heating data may differ slightly.

(CAPACITY : about several hundred Btu/h)

Capacity(Btu/h)

Cooling Heating Cooling Heating Cooling Heating Cooling Heating

Power Consumption(kW)

Current(A)/230V Current(A)/208V

5-3. CORRECTING COOLING AND HEATING CAPACITY

5-3-1. Correcting Changes in Air Conditions

(1) The performance curve charts (Figure 1, 2) show the ratio by the temperature condition change when the rated capacity (total

capacity) and the rated input are presumed 1, under standard length (7.6 m [25 ft]) and standard temperature condition.

• Standard conditions:

Rated cooling capacity

Rated heating capacity

• Use the rated input and rated power values given in the characteristics table for each indoor unit.

• The input is the single value of the outdoor unit; the input of each indoor unit must be added to obtain the total input.

(2) The capacity of each indoor unit may be obtained by multiplying the total capacity obtained in (1) by the ratio between the

individual capacity at the rated time and the total capacity at the rated time.

Indoor D.B. 26.7°C / W.B. 19.4°C [D.B.80°F / W.B.67°F] Outdoor D.B. 35°C [D.B.95°F]

Indoor D.B. 21.1°C [D.B.70°F] Outdoor D.B. 8.3°C / W.B. 6.1°C [D.B.47°F / W.B.43°F]

Individual capacity under stated conditions = total capacity under the stated conditions o

(3) Capacity correction factor curve

Figure 1. Cooling performance curve

1.4

Cooling capacity (ratio)

1.2

1.0

0.8

0.6

1.4

1.2

1.0

0.8

0.6

Cooling power consumption (ratio)

0.4

-5 0 10 20 30 40 46 23 32 50 68 86 104 115

OUTDOOR

:WB(°FWB)

22 (71.6) 20 (68) 18 (64.4) 16 (60.8)

INDOOR

:WB(°FWB)

22 (71.6) 20 (68) 18 (64.4) 16 (60.8)

INDOOR

°C DB

°F DB

Figure 2. Heating performance curve

1.4

Heating capacity (ratio)

1.2

1.0

0.8

0.6

0.4

1.4

1.2

1.0

0.8

0.6

0.4

-12

-18 10

individual capacity at the rated time

total capacity at the rated time

Heating power consumption (ratio)

-1014-523032541105015

OUTDOOR

°F WB

:DB(°FDB)

15 (59)

21.1 (70)

25 (77)

INDOOR

:DB(°FDB)

21.1 (70)

15 (59)

25 (77)

INDOOR

°C WB

5-3-2. Correcting Capacity for Changes in the Length of Refrigerant Piping

• During cooling, to obtain the ratio (and the equivalent piping length) of the outdoor units rated capacity and the total in-use indoor capacity, first find the capacity ratio corresponding to the standard piping length from Figure 3 at first, and then multiply by the cooling capacity from Figure 1 to obtain the actual capacity.

• During heating, to find the equivalent piping length, first find the capacity ratio corresponding to standard piping length from Figure 3, and then multiply by the heating capacity from Figure 2 to obtain the actual capacity.

(1) Capacity CORRECTION CURVE (Figure 3)

100

Cooling

Heating

Heating P36, 48 models

Cooling P36 model

Capacity ratio [%]

Cooling P48 model

5 101520253035404550556065707580[m]

[16] [33] [50] [70] [80] [100] [115] [130] [150] [165] [180] [195] [215] [230] [245] [260][ft]

Corrected pipe length

(2) Method for Obtaining the Equivalent Piping Length

Equivalent length for type P48 = (length of piping to farthest indoor unit) + (0.3 o number of bends in the piping) (m) Length of piping to farthest indoor unit: 80 m [262 ft]

5-3-3. Correction of Heating Capacity for Frost and Defrosting

If heating capacity has been reduced due to frost formation or defrosting, multiply the capacity by the appropriate correction factor from the following table to obtain the actual heating capacity.

Correction factor diagram

Outdoor Intake temperature (W.B.°F)

Outdoor Intake temperature (W.B.°C)

Correction factor

43 39 36 32 28 25 21 18 14

6420-2-4-6-8-10

1.0 0.98 0.89 0.88 0.89 0.9 0.95 0.95 0.95

5-4. NOISE CRITERION CURVES

SPL(dB)

PUMY-P36NHMU(-BS) PUMY-P36NHMUR1(-BS)

APPROXIMATE

THRESHOLD OF HEARING FOR CONTINUOUS NOISE

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

MICROPHONE

1m [3.3ft]

MODE

COOLING

HEATING

UNIT

LINE 49 51

PUMY-P48NHMU(-BS) PUMY-P48NHMU PUMY-P48NHMU

1(-BS) 2(-BS)

MODE

COOLING

HEATING

SPL(dB)

50 52

LINE

PUMY-P48NHMUR3(-BS)

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

APPROXIMATE

THRESHOLD OF HEARING FOR CONTINUOUS NOISE

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

1.5m

[4.9ft]

GROUND

OUTLINES AND DIMENSIONS

PUMY-P48NHMU PUMY-P48NHMU-BS PUMY-P48NHMU

PUMY-P48NHMU1-BS

19<3/4>

2-U Shaped notched hole

(Foundation Bolt M10<W3/8>)

175

<6-7/8>

Rear Air Intake

600<23-5/8>

175

<6-7/8>

Side Air Intake

4 PIPING-WIRING DIRECTIONS

Piping and wiring connections

can be made from 4 directions:

front, right, rear and below.

417<16-13/32>

56<2-7/32>

37<1-15/32>

330<13>

2-12%36 Oval hole

28<1-3/32> 370<14-9/16>

53<2-3/32>

Left …… For the power supply

Center … For the transmission line

Right…… For concentration control

Terminal block

70<2-3/4>

42<1-21/32>

56<2-7/32>

Air Discharge

(Foundation Bolt M10<W3/8>)

30<1-3/16>

( )

Ground for the power supply

("GR"marking position)

950<37-13/32>

322<12-11/16>

Handle

Rear Air Intake

Ground for the transmission line

Ground for concentration control

Side Air Intake

Handle

Service panel

635<25>371<14-19/32>

1350<53-5/32>

Handle

1088<42-27/32>

+1 507<19-31/32>

+1 423<16-21/32>

23<29/32>

Front piping cover

Rear piping cover

71<2-13/16>

When installing the conduit.

Set the attachment to the

Unit : mm <inch>

Bottom piping hole

(Knockout)

71<2-13/16>

219<8-5/8>

1/2 Conduit attachment

inner side of each panel.

2-W22<7/8>

40<1-9/16>

Conduit hole

(2-W27<1-1/16>Knockout)

Rear trunking hole

(Knockout)

W92

<3-5

31<1-7/32>

74<2-19/32>

Rear piping hole

/8>

W33<1-5/16>

Drain hole

145

<5-23/32>

145

<5-23/32>

145

<5-23/32>

220

<8-21/32>

81<3-3/16>

30<1-3/16>

(Knockout)

mm<inch>

Please secure the unit firmly

with 4 foundation (M10<W3/8>)

2 SERVICE SPACE 3 FOUNDATION BOLTS

Dimensions of space needed

for service access are

1 FREE SPACE (Around the unit)

The diagram below shows a

basic example.

bolts.(Bolts and washers must

be purchased locally.)

<5-29/32> Min.150mm

shown in the below diagram.

FREE

Explanation of particular details is

given in the installation manuals etc.

FOUNDATION

<19-11/16> Min.500mm

Min.500mm

Service space

Min.10mm<3/8>

30mm<1-3/16> Max.

<19-11/16>

Min.150mm<5-29/32>

Min.1000mm<39-3/8>

Handle

Example of Notes

……Refrigerant GAS pipe connection (FLARE):15.88 (5/8 inch)

……Refrigerant LIQUID pipe connection (FLARE): 9.52 (3/8 inch)

+1…..Indication of STOP VALVE connection location.

Air intake

55<2-3/16>

63<2-1/2>

73<2-7/8>

W92

63<2-1/2>

92<3-5/8>

73<2-7/8>

<2-1/2> 63

55<2-3/16>

W92

<3-5/8>

27<1-1/16>

<3-5/8>

92<3-5/8>

65<2-9/16>

27<1-1/16>

92<3-5/8>

55<2-3/16>

19<3/4>

73<2-7/8>

27<1-1/16>

65<2-9/16>

92<3-5/8>

23<29/32>

40<1-9/16>

Right trunking hole

(Knockout)

45<1-25/32>

Conduit hole

(2-W27<1-1/16>Knockout)

Right piping hole

(Knockout)

Conduit hole

(2-W27<1-1/16>Knockout)

40<1-9/16>

<2-31/32>

45<1-25/32>

40<1-9/16>

Piping Knockout Hole Details

Front piping hole

Front trunking hole

(Knockout)

Min.500mm

<19-11/16>

Min.500mm

<19-11/16>

Min.150mm

<5-29/32>

Min.10mm<3/8>

Handle

Side Air Intake

Front piping cover

Rear piping cover

Air intake

Rear Air Intake

Handle

Service panel

Handle

31<1-7/32>

74<2-19/32>

40<1-9/16>

Max.

30mm<1-3/16>

The diagram below shows a

basic example.

Explanation of particular details is

given in the installation manuals etc.

Dimensions of space needed

for service access are

shown in the below diagram.

Please secure the unit firmly

with 4 foundation (M10<W3/8>)

bolts.(Bolts and washers must

be purchased locally.)

Air Discharge

Rear Air Intake

Side Air Intake

……Refrigerant GAS pipe connection (FLARE):15.88 (5/8 inch)

……Refrigerant LIQUID pipe connection (FLARE):9.52 (3/8 inch)

+1…..Indication of STOP VALVE connection location.

Example of Notes

Piping Knockout Hole Details

1 FREE SPACE (Around the unit)

2 SERVICE SPACE 3 FOUNDATION BOLTS

4 PIPING-WIRING DIRECTIONS

Piping and wiring connections

can be made from 4 directions:

front,right,rear and below.

1/2 Conduit attachment

2-W22<7/8>

When installing the conduit.

Set the attachment to the

inner side of each panel.

mm<inch>

FOUNDATION

Service space

Min.1000mm<39-3/8>

Min.10mm<3/8>

FREE

Min.150mm<5-29/32>

2-U Shaped notched hole

(Foundation Bolt M10<W3/8>)

Conduit hole

(2-W27<1-1/16>Knockout)

45<1-25/32>

Right trunking hole

(Knockout)

45<1-25/32> 40<1-9/16>

65<2-9/16>

92<3-5/8>

27<1-1/16>

55<2-3/16>

23<29/32>

73<2-7/8>

63<2-1/2>

Rear piping hole

(Knockout)

Rear trunking hole

(Knockout)

Conduit hole

(2-W27<1-1/16>Knockout)

W92

<3-5/8>

W92

<3-5/8>

19<3/4> 55<2-3/16>

92<3-5/8>

40<1-9/16>

73<2-7/8> 63<2-1/2>

23<29/32>

27<1-1/16>

92<3-5/8>

Conduit hole

(2-W27<1-1/16>Knockout)

<2-31/32>

Right piping hole

(Knockout)

40<1-9/16>

55<2-3/16>

73<2-7/8>

27<1-1/16>

23<29/32>

65<2-9/16>

92<3-5/8>

Front trunking hole

(Knockout)

Front piping hole

(Knockout)

<2-1/2>

<3-5/8>

30<1-3/16>

81<3-3/16>

219<8-5/8>

71<2-13/16>

Bottom piping hole

(Knockout)

Drain hole

W33<1-5/16>

220

<8-21/32>

145

<5-23/32>

145

<5-23/32>

145

<5-23/32>

Handle

600<23-5/8>

28<1-3/32>

370<14-9/16>

70<2-3/4>

56<2-7/32>

42<1-21/32>

56<2-7/32>

37<1-15/32>

19<3/4>

53<2-3/32>

417<16-13/32>

330<13>

175

<6-7/8>

175

<6-7/8>

2-12%36 Oval hole

(Foundation Bolt M10<W3/8>)

30<1-3/16>

1088<42-27/32>

322<12-11/16>

635<25>371<14-19/32>

950<37-13/32>

23<29/32>

1350<53-5/32>

+1 423<16-21/32>

+1 507<19-31/32>

Handle

( )

Left …… For the power supply

Center … For the transmission line

Right…… For concentration control

Terminal block

Ground for the transmission line

Ground for concentration control

Ground for the power supply

("GR"marking position)

PUMY-P36NHMU(-BS) PUMY-P36NHMUR1(-BS) PUMY-P48NHMU

2(-BS)

PUMY-P48NHMUR3(-BS)

Unit : mm <inch>

WIRING DIAGRAM

PUMY-P48NHMU PUMY-P48NHMU-BS PUMY-P48NHMU1 PUMY-P48NHMU1-BS

SYMBOL NAME SYMBOL NAMESYMBOL NAME

TB1 Terminal Block <Power Supply> TB3 Terminal Block <Transmission> TB7 Terminal Block <Centralized Control> MC Motor for Compressor MF1,MF2 Fan Motor 21S4 Solenoid Valve<Four way valve> SV1 Solenoid Valve<Bypass valve> TH3 TH4 Thermistor<Discharge Temperature> TH6 TH7 Thermistor<Outdoor Temperature> TH8 Thermistor<Heatsink> 63HS 63H High Pressure Switch 63L Low Pressure Switch CB Main Smoothing Capacitor ACTM RS Rush Current Protect Resistor DCL P.B. Power Circuit Board

U/V/W TAB-S/T TAB-P/P1/P2 TAB-N/N1/N2 CN2~5 CNDC CNAF IPM LED1

Thermistor<Outdoor Pipe Temperature>

Thermistor<Low Pressure Saturated Temperature>

High Pressure Sensor<Discharge Pressure>

Active filter Module

Reactor

Connection Terminal<U/V/W-Phase> Terminal<L/N-Phase> Terminal<DCVoltage> Terminal<DCVoltage> Connector Connector Connector Inverter Light Emitting Diodes <Inverter Control Status>

MULTI.B.

F1,F2 F500 SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8 SWU1 SWU2 TRANS LED1,2 LED3 CNS1 CNS2 CNAC CNDC CN2 CN4 CN40 CN41 TH3 TH4 TH7/6 63HS 63H 63L CNF1,CNF2 21S4 SV1 SS CN3D CN3S CN3N CN51 X501~505

Multi Controller Board Fuse<6.3A> Fuse<3A> Switch<Display Selection> Switch<Function Selection> Switch<Test Run> Switch<Model Selection> Switch<Function Selection> Switch<Function Selection> Switch<Function Selection> Switch<Function Selection> Switch<Unit Address Selection, 1s digit> Switch<Unit Address Selection, 10ths digit> Transformer Digital Indicator<Operation Inspection Display> LED<Power Supply to Main Microcomputer> Connector<Multi System> Connector<Centralized Control> Connector<To Noise Filter Circuit Board> Connector<Power circuit board> Connector<To Power Circuit Board> Connector<To Power Circuit Board> Connector<Centralized Control Power Supply> Connector<For storing Jumper Connector> Connector<Thermistor> Connector<Thermistor> Connector<Thermistor> Connector<High Pressure Sensor> Connector<High Pressure Switch> Connector<Low Pressure Switch> Connector<Fan Motor> Connector<Four-way Valve> Connector<Bypass Valve> Connector<For Option> Connector<For Option> Connector<For Option> Connector<For Option> Connector<For Option> Relay

N.F. Noise Filter Circuit Board

LI/LO NI/NO EI CNAC1/2 CN5

M-P.B.

CN1 CN2

Connection Lead<L-Phase> Connection Lead<N-Phase> Connection Terminal<Ground> Connector Connector Transmission Power Board Connector<To Noise Filter Circuit Board> Connector<To Multi Controller Board>

Caution for electrical work

Use copper supply wires.

Cautions when Servicing

WARNING: When the main supply is turned off, the voltage [340 V] in the main capacitor will drop to 20 V in approx. 2 minutes (input voltage: 240 V).

NOTES:

1.Refer to the wiring diagrams of the indoor units for details on wiring of each indoor unit. Self-diagnosis function The indoor and outdoor units can be diagnosed automatically using the self-diagnosis switch (SW1) and LED1, LED2 (LED indication) found on the multi-controller of the outdoor unit. LED indication : Set all contacts of SW1 to OFF.

During normal operation The LED indicates the drive state of the controller in the outdoor unit.

Bit

Indication

When faults requiring inspection occurs The LED alternately indicates the inspection code and the location of the unit in which the fault has occurred.

When servicing, make sure that LED1, LED2 on the outdoor circuit board goes out, and then wait for at least 1 minute. Components other than the outdoor board may be faulty: Check and take corrective action, referring to the service manual. Do not replace the outdoor board without checking.

[Example] When the compressor and SV1 are turned during cooling

Compressor operated

52C321S44SV15(SV2)

–

Always lit

operation.

12345678

MF1

MF2

TB3

TO INDOOR UNIT

CONNECTING WIRES

DC 30V(Non-polar)

TB7

FOR CENTRALIZED

CONTROL

DC 30V(Non-polar)

POWER SUPPLY

NO FUSE

BREAKER

~/N AC208V/230V 60Hz

(BRN)

(ORN)

MULTI. B.

F500

X505

52C

(BLK)

4 567

4 5 6 7

21S4 (GRN)

3 1

21S4

CNF1

(WHT)

CNF2

(WHT)

CNDC (PNK)

X504

SV2

(BLU)

3 1

TH8

X503

TH7TH6 TH3 TH463HS 63H63L

12 121234

1 23

TH7/6

63HS

(RED)

(WHT)

63H

(YLW)

TRANS

X502

SV1

(WHT)

2 1

SV1

52C

P. B.

123

CNAF

456

(WHT)

12 12 12 1234567

CN2

(WHT)

CN3

(WHT)

CN5

(RED)

CN4

(WHT) TAB N

TABP

X501

TABP2

RED

TH3

(WHT)

WHT

(WHT)

BLK

TH4

63L

(RED)

DCL

CNDC

(PIN)

LED3

CNAC (RED)

ACTM

TABN1

CNS1 (RED)

TABN2

CN3D

(WHT)

123

CN2

(WHT)

7654321

CNS2 (YLW)

21 2

CN3S (RED)

1 23

123456

TABT

TAB S

TABP1

N1 N2

CN3N (BLU)

123

(WHT)

CN4

CN51

(WHT)

SWU2 SWU1

SW4

4321

CN41

(WHT)

CNAC2

(RED)

CNAC1

(WHT)

SW5

SW1

LED1

CN40

(WHT)

3214 321

NO CN5

(RED)

E I

SW3

M-P.B.

NILI

SW8

SW7

LED2

CN102 (WHT) 432 1

N. F.

SW6

SW2

TP1

1 2 34

CN2

(WHT)

CN1

(WHT)

3 1

<+1 MODEL SELECT>

MODELS

PUMY-P48NHMU

The black square ( )

SW4

OFF

123456

indicates a switch position.

(Note : Only PUMY-P48NHMU1 and PUMY-P48NHMU1-BS) DIP SW4-4 for primary heating control : Set DIP SW4-4 when power is turned off at unit. DIP SW4-4 OFF : Disable primary heating function (Initial setting) DIP SW4-4 ON : Enable primary heating function

PUMY-P36NHMU(-BS) PUMY-P36NHMUR1(-BS) PUMY-P48NHMU

SYMBOL NAME SYMBOL NAME SYMBOL NAME

TB1 Terminal Block <Power Supply> TB3 Terminal Block <Communication Line> TB7 Terminal Block < MC Motor For Compressor MF1,MF2 Fan Motor 21S4 Solenoid Valve<Four-Way Valve> 63H High Pressure Switch 63L Low Pressure Switch 63HS High Pressure Sensor SV1 Solenoid Valve<Bypass valve> TH3 TH4 Thermistor<Discharge/Compressor> TH6 Thermistor<Low Pressure Saturated> TH7 TH8 DCL

ACTM

CE Main Smoothing Capacitor

Caution for electrical work

• Use copper supply wires.

Cautions when Servicing

•

When servicing, make sure that LED1, LED2 on the outdoor circuit board goes out, and then wait for at least 1 minute.

• Components other than the outdoor board may be faulty: Check and take corrective action, referring to the service manual.

Do not replace the outdoor board without checking.

Thermistor<Outdoor Pipe>

Thermistor<Outdoor> Thermistor<Heatsink> Reactor

Active Filter Module

WARNING: When the main supply is turned off, the voltage [340 V] in the main capacitor will drop to 20 V in approx. 2 minutes (input voltage: 230 V).

2(-BS) PUMY-P48NHMUR3(-BS)

P.B. Power Circuit Board

Centralized Control Line>

N.F. Noise Filter Circuit Board

C.B.

TABU/V/W TABS/T TABP1/P2/P TABN1/N2/N DS2,DS3 IPM

LI/LO NI/NO EI,E2 52C

SW1 SW2 SW3 SW4 SW5

Connection Terminal<U/V/W-Phase> Connection Terminal<L/N-Phase> Connection Terminal<DC Voltage> Connection Terminal<DC Voltage> Diode Bridge Power Module

Connection Terminal<L-Phase> Connection Terminal<N-Phase> Connection Terminal<Ground> 52C Relay Controller Circuit Board Switch<Display Selection> Switch<Function Selection> Switch<Test Run> Switch<Model Selection> Switch<Function Selection>

SW6 SW7 SW8 SWU1 SWU2 CNLVB

SS CN3D CN3S CN3N CN51 LED1,LED2 LED3 F1,F2 X501~505

M-NET P.B.

TP1

Switch<Function Selection> Switch<Function Selection> Switch<Function Selection> Switch<Unit Address Selection, 1st digit> Switch<Unit Address Selection, 2nd digit> Connector<To N.F. Board CN52C>

(Symbol of Board is CNLVB) Connector<Connection For Option> Connector<Connection For Option> Connector<Connection For Option> Connector<Connection For Option> Connector<Connection For Option>

LED<Operation Inspection Display> LED<Power Supply to Main Microprocessor>

Fuse<T6,3AL250V> Relay M-NET Power Circuit Board ConnectionTerminal<Ground>

NOTES:

• During normal operation

• The LED indicates the drive state of the controller in the outdoor unit.

Bit

Indication

Compressor operated

52C

21S4

SV15(SV2)

Always lit

• When faults requiring inspection occurs The LED alternately indicates the inspection code and the location of the unit in which the fault has occurred.

[Example] When the compressor and SV1 are turned during cooling operation.

12345678

C. B.

MF1

MF2

X505

52C

(BLK)

TB3

RED

TO INDOOR UNIT CONNECTING WIRES DC 30V(Non-polar)

TB7

YLW

FOR CENTRALIZED CONTROL DC 30V(Non-polar)

POWER SUPPLY ~/N 208/230V 60Hz

TB1

RED

BLU

GRN

CNF1

(WHT)

CNF2

(WHT)

21S4

CNDC (PNK)

X504

21S4

(GRN)

TH8

TH7 TH6 TH3 TH4

63HS

141 TH7/6

63HS

(RED)

(WHT)

TRANS

X503

(BLU)

t°

WHT

RED

t° t° t°

TH3

(WHT)

X502

SV2

SV1

12 12

(WHT)

SV1

P. B.

CNAF

(WHT) 6 1

CN2

(WHT)

CN3

(WHT)

CN5

(RED)

2 1

CN4

(WHT)

TABN

TABP

t°

2112

TH4

(WHT)

63H

(YLW)

IPM

TABP2

RED

BLK

RED

ACTM

63L

113

63L

(RED)

X501

TABU

RED

MS 3~

DCL

(WHT)

TABV

BLK

WHT

L1 L2

63H

TABW

CN3D

CN3S

(WHT)

131313

CNAC (RED)

CNDC

(PIN)

CN3N

(RED)

(BLU)

(WHT)

LED3

CNS2

CNS1

(YLW)

(RED)

TABN1

BLK

TABN2

WHT

RED

N1 N2

CNLVB

(RED)

CN51

(WHT)

CN4

CN2

(WHT)

TABT

DS3

TABS

DS2

TABP1

WHT

SWU2 SWU1

CN41

(WHT)

BLU

WHT

RED

■

is the switch position.

SW6

SW5

SW2SW8SW1

SW7SW3SW4

LED2

LED1

CN102

(WHT)

CN40 (WHT)

(RED)

CNAC2

(WHT)

CNAC1

WHT

L I

RED

+1 MODEL SELECT 1:ON 0:OFF

PUMY-P36NHMU PUMY-P48NHMU

52C

N I

BLU

MODELS

BLU

N. F.

CN52C

CN5

CN2

(WHT)

CN1

(WHT)

(BLK)

(RED)

E I

M-NET P.B.

TP1

BLK

SW4

123456 011010

011001

NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION

8-1. TRANSMISSION SYSTEM SETUP

005

004

003

105

Remote

controller

Remote

controller

Remote

controller

Indoor unitIndoor unitIndoor unitIndoor unitIndoor unit

006

007

Address SWAddress SWAddress SWAddress SWAddress SW

157

Remote

controller

107

Remote

controller

Address SWAddress SW

008

Piping

For remote

051

Outdoor unit

Transmission wire

controller

Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit



002

001

Address SW Address SW Address SW Address SW Address SW



connected to each refrigerant

system (outdoor and indoor).

 A transmission wire must be

 Set addresses:

102 104 154

Remote

controller

101

1111

Address SW Address SW Address SW Address SW Address SW

Remote

controller

Outdoor unit ..............051-100

Indoor unit .................001-050

Remote controller .....101-200

The address automatically become

"100" if it is set as "01~50".

 PUMY has no 100ths digit switch.

For remote

056

Outdoor unit

controller

009

010

For centralized

management

For centralized

management

8-2. REFRIGERANT SYSTEM DIAGRAM PUMY-P36NHMU(-BS) PUMY-P36NHMUR1(-BS)

PUMY-P48NHMU(-BS) PUMY-P48NHMU

1(-BS) PUMY-P48NHMU2(-BS)

PUMY-P48NHMUR3(-BS)

Refrigerant flow in cooling Refrigerant flow in heating

Service port

Refrigerant Gas pipe

<5/8 inch>

Stop valve

4-way valve

Strainer

Pressure sensor (63HS)

Solenoid valve(SV1)

High pressure switch(63H)

Capillary tube

Thermistor<Saturation temperature of suction pressure>(TH6)

Check valve<Low pressure>

Strainer

Check valve <High pressure>

Oil separator

Strainer

Discharge thermistor(TH4)

Compressor thermistor(TH4)

(P36NHMUR1,P48NHMUR3)

Heatsink thermistor(TH8)

Refrigerant Liquid pipe

<3/8 inch>

Accumulator

Stop valve

Strainer

Low pressure switch(63L)

Compressor

Service port

Capillary tube (for oil separator) : :2.5 % :0.8 % L1000(mm) [:(3/32) % :(1/32) % L(39-1/2)] inch

Refrigerant piping specifications <dimensions of flared connector>

Capacity

Item

Liquid piping

Gas pipng

Thermistor(TH7) (Outdoor temperature)

Distributor

Thermistor(TH3) (Pipe temperature)

Unit:mm<inch>

Indoor unit

Outdoor unit

P06, P08, P12, P15, P18

P24, P30, P36, P48, P54

P36, P48

:6.35<1/4>

:9.52<3/8>

:12.7<1/2>

:15.88<5/8>

8-3. SYSTEM CONTROL

8-3-1. Example for the System

• Example for wiring control cables, wiring method and address setting, permissible lengths, and the prohibited items are listed in the standard system with detailed explanation. The explanation for the system in this section : Use one single outdoor unit and multiple outdoor units for M-NET remote control system.

Use one single outdoor unit and multiple indoor units in the multiple outdoor units for the M-NET remote control system.

A. Example of a M-NET remote controller system (address setting is necessary.)

Example of wiring control cables

1. Standard operation

TB7

TB5

TB15

M1M2

S12

101

TB3

M1M2

SAB

• 1 remote controller for each indoor unit.

• There is no need for setting the 100 position on the remote controller.

2. Operation using 2 remote controllers

TB3

TB7

M1M2

SAB

Using 2 remote controllers

•

for each indoor unit.

AB AB AB AB

101

(Main)

TB5

M1M2

TB15

S12

151

(Sub)

3. Group operation

TB3

TB7

M1M2

SAB

• Multiple indoor units operated

TB5

M1M2

101

IC(Main)

TB15

S12

together by 1 remote controller

Combinations of 1 through 3 above are possible.

a. Use feed wiring to connect terminals M1 and M2 on

b. Connect terminals M1 and M2 on transmission cable

TB5

M1M2

TB15

S12

c. Set the address setting switch (on outdoor unit P.C.B)

102

Indoor unit (IC)

Outdoor unit

(OC)

controller (RC)

a. Same as above. b. Same as above. c. Set address switch (on outdoor unit P.C.B) as

TB5

M1M2

TB15

S12

Indoor Unit (IC)

Outdoor unit

Main Remote

102

(Main)

152

(Sub)

Controller (RC)

Sub Remote

Controller (RC)

a. Same as above. b. Connect terminals M1 and M2 on transmission cable

TB5

M1M2

IC(Sub)

S122

c. Set the address setting switch (on outdoor unit P.C.B)

TB15

Outdoor Unit

Main Remote

Controller

Sub Remote

Controller

d. Use the indoor unit (IC) within the group with the

most functions as the IC (Main) unit.

Wiring Method and Address Setting

transmission cable block (TB3) for the outdoor unit (OC) to terminals M1 and M2 on the transmission cable block (TB5) of each indoor unit (IC). Use nonpolarized 2 wire.

terminal block (TB5) for each indoor unit with the terminal block (TB6) for the remote controller (RC).

as shown below.

Unit

Range

001 to 050

Setting Method

—

Use the smallest

051 to 100

address of all the indoor unit plus 50.

Remote

101 to 150

Indoor unit address plus

100.

shown below.

Unit

Range

001 to 050

Setting Method

—

Use the smallest

(OC)

051 to 100

101 to 150

address of all the indoor units plus 50. Indoor unit address plus

100.

151 to 200

Indoor unit address plus

150.

terminal block (TB5) of the IC main unit with the most recent address within the same indoor unit (IC) group to terminal block (TB6) on the remote controller.

as shown below.

Unit

IC (Main)

IC (Sub)

Range

001 to 050

051 to 100

101 to 150

151 to 200

Use the smallest address within the same group of indoor units. Use an address, other than that of the IC (Main) in the same group of indoor units. This must be in sequence with the IC (Main).

Use the smallest address of all the indoor units plus 50. Set at an IC (Main) address within the same group plus 100. Set at an IC (Main) address within the same group plus 150.

Setting Method

• Name, Symbol and the Maximum Remote controller Units for Connection

Name Symbol Maximum units for connection

Outdoor unit

Indoor unit

M-NET remote controller

One OC unit can be connected to 1-6 (P36)/1-8 (P48) IC units Maximum 2 RC for 1 indoor unit, Maximum 16 RC for 1 OC

—

Permissible Lengths Prohibited items

Longest transmission cable length

(1.25 mm

1 + L2, L2 + L3, L3 + L1 [ 200m

[AWG16])

[656ft] Remote controller cable length

1. If 0.5 to 1.25 mm

[AWG20 to AWG16]

1, R2 [10m [33ft]

2. If the length exceeds 10 meters [33ft], the exceeding section

should be 1.25 mm

[AWG16] and that section should be a value within the total extension length of the transmission cable and maximum transmission cable length. (L

Same as above

• M-NET remote controller (RC) and MA remote controller (MA) cannot be used together.

• Do not connect anything with TB15 of indoor unit(IC).

TB3

M1M2

TB7

SAB

TB3

TB7

SAB

TB5

TB15

M1M2

S12

TB5

M1M2

101

TB15

S12

TB5

M1M2

TB15

S12

TB5

M1M2

TB15

S12

TB15

• Use the indoor unit (IC) address plus 150 as the sub remote controller address. In this case, it should be 152.

• Three or more remote

AB AB AB AB AB

101

(Main)

151

(Sub)

102

(Main)

103

(Sub)

104

controller (RC) cannot be connected to 1 indoor unit.

Same as above

TB3

M1M2

TB7

SAB

IC(Main)

TB5

TB15

M1M2

S12

TB5

M1M2

IC(Sub)

TB15

S12

• The remote controller address is the indoor unit main address plus

100. In this case, it should be 101.

102

B. Example of a group operation system with 2 or more outdoor units and a M-NET remote controller. (Shielding wires and address settings are necessary.)

L6L7

Examples of Transmission Cable Wiring

(51)

TB3

M1M2S

M1 M2 S

TB7



(53)

TB3

M1M2 S

M1 M2 S

TB7

Power Supply

Unit

M1M2S

G-50A

M1M2S

DV 12V



(01)

TB5

M1 M2 S

AB AB AB

(101)

(03)

TB5

M1 M2 S

(02)

TB5

M1 M2 S

(04)

TB5

M1 M2 S

(104)

TB5

M1 M2 S

(105)

TB5

M1 M2 S

(05)

(07)



TB5

M1 M2 S

(06)

(155)





 : Group 1  : Group 3  : Group 5  : Shielded Wire  : Sub Remote Controller

( ): Address

a. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (IC), as well

for all OC-OC, and IC-IC wiring intervals.

b. Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block (TB3)

of each outdoor unit (OC) to terminals M1 and M2 on the terminal S on the transmission cable block of the indoor unit (IC).

c. Connect terminals M1 and M2 on the transmission cable terminal block of the indoor unit (IC) that has the most

recent address within the same group to the terminal block on the remote controller (RC).

d. Connect together terminals M1, M2 and terminal S on the terminal block for central control (TB7) for the outdoor unit

(OC). e. DO NOT change the jumper connector CN41 on MULTI controller board. f. The earth processing of S terminal for the centralized control terminal block (TB7) is unnecessary.

Connect the terminal S on the power supply unit with the earth.

g. Set the address setting switch as follows.

Unit Range Setting Method

IC (Main) 01 to 00

IC (Sub) 01 to 50

Wiring Method Address Settings

Outdoor Unit 51 to 100

Main Remote Controller 101 to 150

Sub Remote Controller 151 to 200

MA Remote Controller —

Use the smallest address within the same group of indoor units. Use an address, other than that of the IC (Main) in the same group of indoor

units. This must be in sequence with the IC (Main). Use the smallest address of all the indoor units plus 50. *The address automatically becomes “100” if it is set as “01 - 50”. Set at an IC (Main) address within the same group plus 100.

Set at an IC (Main) address within the same group plus 150.

Unnecessary address setting (Necessary main/ sub setting)

h. The group setting operations among the multiple indoor units is done by the remote controller (RC) after the electrical

power has been turned on.

• Name, Symbol, and the Maximum Units for Connection

• Longest length via outdoor units : L1+L2+L3+L4, L1+L2+L3+L5, L1+L2+L6+L7 [ 500 meters [1640 ft] (1.25 mm2 [AWG16])

• Longest transmission cable length : L

• Remote controller cable length : R

1,R2, R2+R3, R4 [ 10 meters [33 ft] (0.5 to 1.25 mm

1, L3+L4, L3+L5, L6, L2+L6, L7 [ 200 meters (1.25 mm

[AWG16])

[AWG20 to AWG16])

If the length exceeds 10 meters [33 ft], use a 1.25 mm2 [AWG16] shielded wire. The

Permissible Length

length of this section (L and overall length.

5) should be included in the calculation of the maximum length

Prohibited items

 : Group 1  : Group 3  : Group 5  : Shielded Wire  : Sub Remote Controller

( ): Address

(51)

TB3

M1M2S

M1 M2 S

TB7



(53)

TB3

M1M2 S

M1 M2 S

TB7

Power Supply

Unit

M1M2S

G-50A

M1M2S

DV 12V



TB5

M1 M2 S

TB5

M1 M2 S

(104)

(02)

(04)

TB5

M1 M2 S

(105)

TB5

M1 M2 S

(05)

(155)

(07)

(01)

TB5

M1 M2 S

AB AB AB

(101)

(03)

TB5

M1 M2 S







(06)

TB5

M1 M2 S

• Never connect together the terminal blocks (TB5) for transmission wires for indoor units (IC) that have been connected to different outdoor units (OC).

• Set all addresses to ensure that they are not overlapped.

• M-NET remote controller and MA remote controller cannot be connected with the indoor unit of the same group wiring together.

C. Example of a MA remote controller system (address setting is not necessary.) NOTE : In the case of same group operation, need to set the address that is only main indoor unit.

Example of wiring control cables Wiring Method and Address Setting

1. Standard operation

a. Use feed wiring to connect terminals M1 and M2 on

transmission cable block (TB3) for the outdoor unit

TB3

M1M2

1 L2

TB5

M1M2

TB15

S12

TB5

M1M2

TB15

S12

TB7

M1M2

(OC) to terminals M1 and M2 on the transmission cable block (TB5) of each indoor unit (IC). Use nonpolarized 2 wire.

b. Connect terminals 1 and 2 on transmission cable

terminal block (TB15) for each indoor unit with the terminal block for the MA remote controller (MA).

• 1 remote controller for each indoor unit.

2. Operation using 2 remote controllers

TB3

TB7

M1M2

SM1M2

• Using 2 remote controllers

TB5

TB15

M1M2

S12

for each indoor unit.

3. Group operation

TB3

M1M2

TB7

M1M2

TB5

M1M2

AB AB

TB15

S12

TB5

M1M2

S12

TB15

MAMA

MA MA

TB5

TB15

M1M2

S12

a. The same as above. b. The same as above. c. In the case of using 2 remote controllers, connect

terminals 1 and 2 on transmission cable terminal block (TB15) for each indoor unit with the terminal block for 2 remote controllers.

· Set the sub remote controller position for one of MA remote controller’s main switch.

Refer to the installation manual of MA remote con-

troller

a. The same as above. b. The same as above. c. Connect terminals 1 and 2 on transmission cable ter-

minal block (TB15) of each indoor unit, which is doing group operation with the terminal block the MA remote controller. Use non-polarized tow wire.

d. In the case of same group operation, need to set the

address that is only main indoor unit. Please set the address of the indoor unit with the most functions in the same group in the number that 01-50 is young.

• Multiple indoor units operated

together by 1 remote controller

Combinations of 1 through 3 above are possible.

• Name, Symbol, and the Maximum Units for Connection

Permissible Lengths Prohibited items

Longest transmission cable length

1 + L2 [ 200 m [656 ft]

L (1.25 mm

[AWG16])

MA remote controller cable length

1, R2 [ 200 m [656 ft]

(0.3 – 1.25 mm2 [AWG22 to AWG16])

Longest transmission cable length The same as above. MA remote controller cable length

3 +R4, R5 +R6 [ 200 m [656 ft]

(0.3 – 1.25 mm2 [AWG22 to AWG16])

TB3

M1M2

TB7

M1M2

The MA remote controller and the M-NET remote controller cannot be used together with the indoor unit of the same group.

TB5

TB15

M1M2

S12

TB5

M1M2

TB15

S12

MAMA

Three MA remote controller or more cannot be connect with the indoor unit of the same group.

Longest transmission cable length The same as above. MA remote controller cable length

7 +R8 [ 200 m [656 ft]

(0.3 – 1.25 mm2 [AWG22 to AWG16])

TB3

M1M2

TB3

M1M2

TB7

M1M2

TB7

M1M2

TB5

TB15

M1M2

AB AB

S12

AB AB

TB5

M1M2

TB15

S12

MA MAMA

The second MA remote controller is connected with the terminal block (TB15) for the MA remote controller of the same indoor unit (IC) as the first remote control.

TB5

TB15

M1M2

S12

TB5

M1M2

TB15

S12

D. Example of a group operation with 2 or more outdoor units and a MA remote controller.

(Shielding wires and address settings are necessary.)

(51)

M1 M2 S

TB7

Examples of Transmission Cable Wiring

L6L7



(53)

M1 M2 S

TB7

Power Supply

Unit

M1M2

G-50A

M1M2

 : Group 1  : Group 3  : Group 5  : Shielded Wire  : Sub Remote Controller

( ): Address

TB3

M1M2S

TB3

M1M2S

DV 12V

(05)

TB15

ABABAB

MAMAMA

(07)

TB15



(06)

TB15

TB5

M1 M2 S





(01)

TB5 TB15

M1 M2 1 2S

(03)

TB15

TB5

M1 M2 S

2 2

(02)

TB15

TB5

M1 M2 S

TB5

M1 M2 S

(04)

TB5

M1 M2 S

TB15

TB5

M1 M2 S



a. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (IC), as well

for all OC-OC, and IC-IC wiring intervals.

b. Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block (TB3)

of each outdoor unit (OC) to terminals M1 and M2 on the terminal S on the transmission cable block of the indoor unit (IC).

c. Connect terminals M1 and M2 on the transmission cable terminal block of the indoor unit (IC) that has the most

recent address within the same group to the terminal block on the remote controller (RC).

d. Connect together terminals M1, M2 and terminal S on the terminal block for central control (TB7) for the outdoor unit

(OC). e. DO NOT change the jumper connector CN41 on MULTI controller board. f. The earth processing of S terminal for the centralized control terminal block (TB7) is unnecessary.

Connect the terminal S on the power supply unit with the earth. g. Set the address setting switch as follows.

Unit Range Setting Method

IC (Main) 01 to 00

IC (Sub) 01 to 50

Wiring Method Address Settings

Outdoor Unit 51 to 100

Main Remote Controller 101 to 150

Sub Remote Controller 151 to 200

MA Remote Controller —

Use the smallest address within the same group of indoor units. Use an address, other than that of the IC (Main) in the same group of indoor

Set at an IC (Main) address within the same group plus 150.

Unnecessary address setting (Necessary main/ sub setting)

h. The group setting operations among the multiple indoor units is done by the remote controller (RC) after the electrical

power has been turned on.

• Name, Symbol, and the Maximum Units for Connection

Longest length via outdoor unit (M-NET cable): L1+L2+L3+L4 and L1+L2+L6+L7  500 m [1640ft] (1.25 [AWG16] or more) Longest (1.25

transmission cable length (M-NET cable): L1 and L3+L4 and L6 and L2+L6 and L7  200 m [656ft]

mm2 [AWG16]

or more) Remote controller cable length: m1 and m1+m2+m3 and m1+m2+m3+m4 200 m [656ft] (0.3 to 1.25 [AWG20 to AWG16]

Permissible Length

(51)

M1M2S

M1 M2 S

TB7



(53)

M1M2S

M1 M2 S

TB7

TB3

)

(01)

TB5 TB15

M1 M2 1 2S

(03)

TB5

M1 M2 S

TB15

TB5

M1 M2 S

TB5

M1 M2 S

(02)

(04)

TB15

TB5

M1 M2 S

TB5

M1 M2 S

(05)

(07)

TB15

ABABAB

MAMAMA

TB15

(06)

TB15

TB5

M1 M2 S



Power Supply

Unit

M1M2

G-50A

Prohibited items

 : Group 1

M1M2

DV 12V



 : Group 3  : Group 5  : Shielded Wire  : Sub Remote Controller

( ): Address

• Never connect together the terminal blocks (TB5) for transmission wires for indoor units (IC) that have been connected to different outdoor units (OC).

• M-NET remote controller and MA remote controller cannot be connected with the indoor unit of the same group wiring together.

9 TROUBLESHOOTING

9-1. CHECK POINTS FOR TEST RUN

9-1-1. Procedures of test run

(1) Before test run, make sure that following work is completed.

• Installation related : Make sure that the panel of cassette type and electrical wiring are done. Otherwise electrical functions like auto vane will not operate normally.

• Piping related : Perform leakage test of refrigerant and drain piping. Make sure that all joints are perfectly insulated. Check stop valves on both liquid and gas side for full open.

• Electrical wiring related : Check ground wire, transmission cable, remote controller cable, and power supply cable for secure connection. Make sure that all switch settings of address or adjustments for special specification systems are correctly settled.

(2) Safety check :

With the insulation tester of 500V, inspect the insulation resistance. Do not touch the transmission cable and remote controller cable with the tester. The resistance should be over 1.0 MΩ. Do not proceed inspection if the resistance in under 1.0 MΩ. Inspect between the outdoor unit power supply terminal block and ground first, metallic parts like refrigerant pipes or the electrical box next, then inspect all electrical wiring of outdoor unit, indoor unit, and all linked equipment .

(3) Before operation :

a) Turn the power supply switch of the outdoor unit to on for compressor protection.For a test run, wait at least 12 hours from this point. b) Register control systems into remote controller(s). Never touch the on/ off switch of the remote controller(s). Refer to “ 9-1-2. Special

Function Operation and Settings (for M-NET Remote Controller)” as for settings . In MA remote controller(s), this registration is unnecessary.

(4) More than 12 hours later from power supply to the outdoor unit, turn all power switch to on for test run. Perform test run according to the

“Operation procedure” table of the bottom of this page. While test running, make test run reports .

(5) When you deliver the unit after test run, instruct the end user for proper usage of the system using owners’ manual and the test run report

you made to certificate normal operation. If abnormalities are detected during test run, refer to “ 9-1-3. Countermeasures for Error During Test Run”. As for DIP switch setting of outdoor unit, refer to” 9-5. INTERNAL SWITCH FUNCTION TABLE”.

(M-NET Remote controller)

Check code indicator (see NOTE 1) Test run remaining time indicator (see NOTE 2)

Indoor unit liquid pipe temperature indicator

(see NOTE 3)

TEST RUN indicator

ON/OFF LED (Lights up in operation) ON/OFF button 

AIR DIRECTION button 

TEST RUN button 

Display panel

(Cooling/Heating) OPERATION SWITCH button ,

TEMP.

TIMER SET

1Hr.

°C

TEST RUN

ON/OFF

FILTER

CHECK TEST

LOUVER button 

Control panel

AIR SPEED button 

Operation procedure

Turn on the main power supply of all units at least 12 hours before test run. ”HO” appears on display panel for 3 min.

12 hours later, press TEST RUN button twice to perform test run. “TEST RUN “ appears on display panel.

Press OPERATION SWITCH button to make sure that air blows out.

Select Cooling (or Heating) by OPERATION SWITCH button to make sure that cool (or warm) air blow out.

Press Fan speed button to make sure that fan speed is changed by the button.

Press AIR DIRECTION button or LOUVER button to make sure that air direction is adjustable (horizontal, downward, upward, and each angle).

Check outdoor fans for normal operation

Check interlocked devices (like ventilator) for normal operation, if any. This is the end of test run operation.

Press ON/OFF button to stop and cancel test run.

NOTE 1 : If error code appears on remote controller or remote controller malfunction , refer to “ 9-1-3. Countermeasures for Error During Run”. NOTE 2 : NOTE 3 : During test run, the indoor liquid pipe temperature is displayed on remote controller instead of room temperature. NOTE 4 : Depend on a model, “This function is not available” appears when air direction button is pressed, however, this is not malfunction.

During test run operation 2-hours off timer activates automatically and remaining time is on remote controller and test run stops 2 hours later.

9-1-2. Special Function Operation and Settings (for M-NET Remote Controller)

• It is necessary to perform “group settings” and “paired settings” at making group settings of different refrigerant systems (multiple outdoor unit). (A)

Group settings: Enter the indoor unit controlled by the remote controller, check the content of entries, and clear entries, etc.

(B) Paired settings: Used to set the linked operation of a Lossnay unit.

(1) Entering address: Follow the steps below to enter the addresses of the indoor unit using the remote controller.

a) Group settings

• Turning off the remote controller: Press the ON/OFF button to stop operation (the indicator light will go off).

• Changing to indoor unit address display mode: If the FILTER and k buttons on the remote controller are pressed simultaneously and held for 2 seconds, the display shown in Figure 1 will appear.

• Changing address: Press the temperature adjustment be entered.

• Entering the displayed address: Press the TEST RUN button to enter the indoor unit with the displayed address. The type of the unit will be displayed as shown in Figure 2 if entry is completed normally. If a selected indoor unit does not exist, an error signal will be displayed as shown in Figure 3. When this happens, check whether the indoor unit actually exists and perform entry again.

• Returning to the normal mode after completing entry: Press the FILTER and k buttons simultaneously and hold for 2 seconds to return to the normal mode.

buttons to change the displayed address to the address to

Figure 1. (A) Group setting display

b) Paired Settings

• Turn off the remote controller: Press the remote controller’s ON/OFF button to turn it off (the indicator light will go off).

• Put in indoor unit address display mode: Press the FILTER and k buttons on the remote controller simultaneously and hold for two seconds.

*The above steps are the same as when making group settings (A).

• Changing to the linked operation unit address display state: The display shown in Figure 4 will appear when the ton on the remote control is pressed.

• Displaying the address of the Lossnay unit and linked indoor unit: In this situation, the indoor unit number will be the lowest address of the group. The Lossnay unit will not operate if this setting is incorrect.

* If the temperature adjustment buttons are pressed, the address may be changed to the indoor unit that are to be

linked.

* If the time setting buttons are pressed, the address of the linked units may be changed to the address where it is

desired to enter the Lossnay .

• Linking the Lossnay and the indoor unit: The display shown in Figure 5 will appear when the TEST RUN button is pressed. The indoor unit whose address is displayed and the Lossnay unit with a linked address will operate in a linked manner.

* If it is desired to display the address of the Lossnay in the indoor unit address, display the indoor unit address in the linked

unit address, and the above content will also be recorded.

* Apart from the indoor unit with the lowest address in the group, display and enter the addresses of the other indoor unit that

are to be linked with the Lossnay unit.

• Returning to the normal mode after completing entry: Press the FILTER and k buttons on the remote controller simultaneously and hold for 2 seconds to return to the normal mode.

Figure 2. Normal completion of entry

Figure 3. Entry error signal

Flashing “88” indicates entry error.Type of unit is displayed.

a but-

Figure 4. (B) Making paired settings

The addresses of indoor unit and linked units are displayed simultaneously.

Figure 5. Completing normal entry

(alternating display)

These alternating IC or LC displays will appear when entry is completed normally.

A flashing “88” will appear if there is a problem with the entry (indicating that the unit does not exist).

(2) Address check: Refer to section (1) regarding address entry.

a) In making group settings:

• Turn off the remote controller: Press the remote controller's ON/OFF button to stop operation (the indicator light will go off).

• Locate the indoor unit address display mode: Press the FILTER and k buttons on the remote controller simultaneously

and hold for 2 seconds.

• Display indoor unit address: The entered indoor units address and type will be displayed each time the button is pressed.

* When one entry is made, only 1 address will be displayed no matter how many times the w button is pressed.

• Returning to the normal mode after completing check: Simultaneously press the FILTER and k buttons on the remote

controller and hold for 2 seconds to return to the normal mode.

b) In making paired settings:

• Turn off the remote controller: Press the remote controller's ON/OFF button to stop operation (the indicator light will go off).

• Put in indoor unit address display mode: Press the FILTER and k buttons on the remote controller simultaneously and

hold for 2 seconds.

• Changing to the linked operation unit address display state: Press the a button on the remote control.

• Displaying the address of the indoor unit to be checked: Change the address to that of the indoor unit to be checked by pressing the temperature adjustment buttons

• Displaying the address of the linked Lossnay unit: Press the w button to display the addresses of the linked Lossnay and indoor unit in alternation.

• Displaying the addresses of other entered units: The addresses of the other entered units will be displayed in alternating fashion after resting the w button again.

• Returning to the normal mode after completing the check: Simultaneously press the FILTER and k buttons on the remote controller and hold for 2 seconds to return to the normal mode.

(3) Clearing an address: Refer to section (1) regarding the address entry and section (2) regarding checking addresses.

a) In making group settings:

• Turn off the remote controller: The procedure is same as a) in (2) Address check.

• Put in the indoor unit address display mode: The procedure is same as a) in (2) Address check.

• Displaying the indoor unit address to be cleared: The procedure is same as a) in (2) Address check.

• Clearing indoor unit address : Pressing the q button on the remote controller twice will clear the address entry of the dis-

played indoor unit, resulting in the display shown in Figure 6. The display shown in Figure 7 will appear if an abnormality occurs and the entry is not cleared. Please repeat the clearing procedure.

• Returning to the normal mode after clearing an address: The procedure is same as a) in (2) Address check.

Figure 6. Display after address has been

cleared normally

"--" will appear in the room temperature display location.

Figure 7. Display when an abnormality has

occurred during clearing

"88" will appear in the room temperature display location.

b) In making paired settings:

• Turn off the remote controller: The procedure is same as b) in (2) Address check.

• Put into the indoor unit address display mode: The procedure is same as b) in (2) Address check.

• Put into the linked unit address display mode: The procedure is same as b) in (2) Address check.

• Display the address of the Lossnay unit or the indoor unit to be cleared.

• Deleting the address of a linked indoor unit: Pressing the q button on the remote controller twice will clear the address entry of the displayed indoor unit, resulting in the display shown in Figure 8.

• Returning to the normal mode after clearing an address: The procedure is same as b) in (2) Address check.

Figure 8. Display after address has been cleared normally

"--" will appear in the unit type display location when an address has

(altenating display)

been cleared normally.

"88" will appear in the unit type display location when an abnormality has occurred during clearing.

9-1-3. Countermeasures for Error During Test Run

• If a problems occurs during test run, a code number will appear in the temperature display area on the remote controller (or LED on the outdoor unit), and the air conditioning system will automatically cease operating.

Determine the nature of the abnormality and apply corrective measures.

Check code

0403

1102 1300 1302 1500 1501 1505 2500 2502 2503 4100 4115 4220 4230 4250 4400

5101

5102

5103 5105 5106 5110 5201 5300 5701 6600

6602

6603

6606

6607

6608

6831

6832

6833

6834

7100 7101 7102 7105 7111

Trouble Remarks

Serial transmission trouble

Discharge/Compressor temperature trouble Low pressure trouble High pressure trouble Excessive refrigerant replenishment Insufficient refrigerant trouble Vacuum operation protection Water leakage Drain pump trouble Drain sensor trouble (THd) Overcurrent trouble (Overload, compressor lock) Power synchronization signal trouble Inverter trouble Overheat protection of radiator panel Power module trouble or Overcurrent trouble Fan controller trouble (Outdoor) Air inlet sensor trouble (TH21) or Discharge/Compressor temperature sensor trouble (TH4) Liquid pipe temp.sensor trouble (TH22) or Low pressure saturated temp.sensor trouble (TH6) Gas pipe temperature sensor trouble (TH23) Piping temperature sensor trouble (TH3) Outdoor temperature sensor trouble (TH7) Heatsink temperature sensor trouble (TH8) Pressure sensor trouble (63HS) Curnent sensor trouble Contact failure of drain float switch Dupricated unit address setting Transmission error (Transmission processor hardware error) Transmission error (Transmission route BUSY) Transmission and reception error (Communication trouble with transmission processor) Transmission and reception error (No ACK error) Transmission and reception error (No responsive frame error) MA communication receive signal error (no receive signal) MA commnication send signal error (starting bit derection error) MA commnication send error (H/W error) MA commnication receive error (Synchronous recovery error) Total capacity error Capacity code error Connecting unit number error Address set error Remote controller sensor trouble

Detected unit

Indoor Outdoor

Remote controller

Outdoor unit Multi controller board ~ Power board communiation trouble Check delay code 1202 Check delay code 1400 Check delay code 1402 Check delay code 1600 Check delay code 1601

Check delay code 4350 Check delay code 4165 Check delay code 4320 Check delay code 4330 Check delay code 4350 Check delay code 4500

Check delay code 1202

Check delay code 1211

Check delay code 1205 Check delay code 1221 Check delay code 1214 Check delay code 1402 Check delay code 4310

Only M-NET Remote controller is detected.

Only M-NET Remote controller is detected. +

Only MA Remote controller is detected.

NOTE ) w

When the outdoor unit detects No ACK error/ No responsive frame error, an object indoor unit is treated

as a stop, and not assumed to be abnormal.

Self-diagnosis function The indoor and outdoor units can be diagnosed automatically using the self-diagnosis switch (SW1) and LED1, LED2 (LED indication) found on the multi-controller of the outdoor unit. LED indication : Set all contacts of SW1 to OFF. During normal operation The LED indicates the drive state of the controller in the outdoor unit.

Bit

Indication

Compressor operated

52C

21S4

SV15(SV2)

—

—8Always lit

[Example] When the compressor and SV1 are turned during coolin operation.

12345678

Display

1102

Abnormal point and detecting method

High discharging/compressor temperature

Abnormal if discharge/compressor temperature

thermistor (TH4) exceeds 125 [257°F] or 110  [230°F] continuously for 5 minutes.

Abnormal if pressure detected by high pressure sensor and converted to saturation temperature exceeds 40 [104°F] during defrosting and

discharge/compressor temperature thermistor (TH4) exceeds 110 [230°F] .

 Over-heated compressor operation

Causes

caused by shortage of refrigerant

 Defective operation of stop valve  Defective thermistor  Defective outdoor controller board  Defective action of linear expansion

valve

Check points

 Check intake super heat. Check leakage of refrigerant. Charge additional refrigerant.

 Check if stop valve is fully open.  Turn the power off and check if 5101

is displayed when the power is turned again. When 5101 is displayed, refer to “Check points” for 5101.  Check linear expansion valve.

Low pressure (63L operated)

1300

Abnormal if 63L is operated (under- 0.03MPa [-4.35PSIG]) during compressor operation. 63L: Low-pressure switch

1302

(1) High pressure (High-pressure switch 63H operated)

Abnormal if high-pressure switch 63H operated ( + ) during compressor operation. + 4.15 MPa [602PSIG]

63H: High-pressure switch

(2) High pressure

(High - pressure sensor 63HS detect) Abnormal if high-pressure sensor detects

4.31MPa [625PSIG] or more (or over

4.15MPa [602PSIG] for 3 minutes) during the compressor operation.

1500

Superheat due to low discharge

temperature

Abnormal if discharge superheat is continuously detected less than or equal to

-15

[-27°F] even though linear expansion valve has minimum open pulse after compressor starts operating for 10 minutes.

 Stop valve of outdoor unit is closed during operation.  Disconnection or loose connection of connector (63L) on outdoor controller board

Disconnection or loose connection of 63L

  Defective outdoor controller board  Leakage or shortage of refrigerant  Malfunction of linear expansion valve  Short cycle of indoor unit  Clogged filter of indoor unit  Decreased airflow caused by dirt of

indoor fan

 Dirt of indoor heat exchanger  Locked indoor fan motor  Malfunction of indoor fan motor  Defective operation of stop valve

(Not fully open)

 Clogged or broken pipe  Locked outdoor fan motor

 Malfunction of outdoor fan motor  Short cycle of outdoor unit  Dirt of outdoor heat exchanger  Decreased airflow caused by defective

inspection of outside temperature thermistor (It detects lower temperature than actual temperature.)  Disconnection or contact failure of connector (63H) on outdoor controller board  Disconnection or contact failure of 63H connection

 Defective outdoor controller board  Defective action of linear expansion

valve

 Malfunction of fan driving circuit  Solenoid valve (SV1) performance

failure (High-pressure cannot be controlled by SV1.)

High-pressure sensor defective

  High-pressure sensor input

circuit defective in multi controller board

 Disconnection or loose connection of discharge/compressor temperature thermistor (TH4)

Defective holder of discharge temperature



thermistor

 Check stop valve.

Check the connector (63L) on outdoor

~ controller board.

 Correct to proper amount of refrigerant.  Check linear expansion valve. ~ Check indoor unit and repair

defectives.

 Check if stop valve is fully open.

 Check piping and repair defectives. ~

Check outdoor unit and repair defectives.

 Check the inspected temperature of outside temperature thermistor on LED display.

Check the connector (63H) on outdoor

~ controller board.

 Check linear expansion valve.

 Replace outdoor controller board.  Check the solenoid valve performance.

 Check the high-pressure sensor.  Check the high-pressure sensor.

 Check the compressor installation conditions of discharge temperature thermistor (TH4).

Display

Refrigerant shortage

1501

When the conditions of below detecting mode  or  are satisfied during the

compressor operation.

<Detecting mode > When the below conditions are satisfied completely.

1. Compressor is operating in HEAT mode.

Discharge superheat is 80 [144°F] or more.

3. Difference of outer temperature thermistor (TH7) and outdoor piping temp. thermistor (TH3) applies to the formula of (TH7-TH3)<5 [9°F] .

4. High-pressure sensor is below about

2.04MPa [296PSIG] . <Detecting mode > When the below conditions are satisfied completely.

1. Compressor is operating.

2. When cooling, discharge superheat is 80 [144°F] or more. When heating, discharge superheat is 90 [162°F] or more. High pressure sensor is below about

2.32MPa [337PSIG] .

Abnormal point and detecting method

Causes

 Gas leakage, Gas shortage  When heating operation, refrigerant

shortage feeling operation (When heating, airflow or thermo OFF are mixed-operation, it causes a refrigerant shortage operation.)  Ball valve performance failure (not full opened.)  Error detection of discharge superheat

1) High-pressure sensor defective

2) Discharge temperature thermistor defective

3) Thermistor input circuit defective and high-pressure sensor defective in multi controller board

 Error detection of TH7/TH3

1) Thermistor defective

Check points

 Check the refrigerant amount.

 Check the operation condition and

refrigerant amount.

 Check the ball valve is fully open.



1) Check the ball valve is fully open.

2) Check the resistance of discharge temperature thermistor.

3) According to “Outdoor unit functions”, set the SW2 and check the high pressure sensor level.

According to “Outdoor unit functions”, check the discharge temp. thermistor level. When the high-pressure sensor and discharge temp. thermistor are normal, if the above mentioned detecting pressure level and temp. are big different from the actual pressure and temp. replace the multi controller board.



1) Check the resistance of thermistor.

Water leakage

2500

1. Suspensive Abnormality when float switch

(Float

detects to be in the water and drain pump

switch

turns on and off except during cooling or dry

model)

mode.

2. Abnormal when detecting that the drain pump turns on and off again within 1 hour after the detection of water leakage suspensive abnormality, and repeats the detection twice. <2500> is displayed.

3. The unit continues to detect abnormality while turned off.

4. To release water leakage suspensive abnormality

· When not detecting that the drain pump turns off and on within 1 hour after detecting suspensive abnormality.

· When turning to cooling operation or dry operation.

· Detected that [liquid pipe temperature – room temperature] -10deg[-18°F]

Operation mode: When drain pump turns on as float switch detects to be in the water except during cooling/dry mode

Drain pump

2) Thermistor input circuit defective in multi controller board

 Defective drain Clogged drain pump Clogged drain pipe Adverse flow of drain in other units  Defective moving part of float switch Foreign matter on the moving part of float switch(ex. sludge etc.)  Defective float switch

2) According to “Outdoor unit functions”, check the outdoor pipe temp. thermistor level.

3) According to “Outdoor unit functions”, check the outer temp. thermistor level.

 Check the drain function.

 Check moving part of float switch.

 Check the value of resistance with the

float switch ON/OFF.

6 min.6 min.

Float switch

OFF

15 sec.

In the water Water leakage suspensive abnormality

15 sec.

In the air In the water In the air

Within 1 hour Within 1 hour

15 sec. 15 sec.

15 sec.

In the water Water leakage abnormality

Display

2502

(Drain sensor model)

Abnormal point and detecting method

Drain pump (DP)

 Drain sensor thermistor is heated, and when

only a fraction of the temperature rise is detected, the system determines abnormality to defer the error to stop operation and changes to protection mode to restart the system in 3 minutes.

 Drain pump is abnormal if the condition above is detected during suspensive abnormality. <2502> is displayed.  Malfunction of drain pipe is constantly detected during drain pump operation.

 The unit enters to forced outdoor unit stop when following conditions, a) and b), are satisfied (while the above mentioned detection is performed). a) The drain sensor detects to be soaked in the water 10 times in a row. b) The room teperature subtracted with liquid pipe temperature is detected to be less than -10[-18 minutes. When the drain sensor detects to be NOT soaked in the water, the

( )

record of a) and b) will be cleared.)

+ Drain pump abnormality (above ~) is

detected before it becomes an outdoor unit

forced stop condition.

 When indoor unit detects above  condition, outdoor unit in same refrigerant sytem stops. Also, indoor unit except for Fan or OFF mode unit stop. 2502 is displayed on stopped unit.  Detection timing of forced outdoor unit stop

Constantly detected during unit operation and stop

 Releasing of forced outdoor unit stop Reset power supply of both abnormal indoor unit and its outdoor unit in same refrigerant system. Forced outdoor unit stop cannot be released by remote controller OFF.

NOTE ) Above-mentioned ~ and ~ are detected independently.

F] continuously for 30

detection

Causes

 Malfunction of drain pump  Defective drain

Clogged drain pump Clogged drain pipe  Water drops on drain sensor

• Drops of drain trickles from lead wire.

• Clogged filter is causing wave of drain.

 Defective indoor controller board

 Both of above mentioned ~ and the

indoor linear expansion valve full-closed failure (leakage) happens synchronistically.

(Note) Address/Attribute displayed on the remote controller shows the indoor unit which is cause of trouble.

Check points

 Check if drain pump works.  Check drain function.

 Check the setting of lead wire of drain

sensor and check clogs of the filter.

 Replace indoor controller board when there is no problem in the above mentioned ~.

Check whether the indoor linear expansion valve leaks or not.

Display

2502

(Float

switch

model)

Abnormal point and detecting method

Drain pump (DP)

 Judge whether the sensor is in the water or in the air by turning the float switch ON/OFF. In the water: Detected that the float switch is ON for 15 seconds. In the air:Detected that the float switch is OFF for 15 seconds.  When the float switch remains to be turned ON for 3 minutes after detected to be in the water, the drain pump is judged to be abnormal and <2502> will be displayed.

*It takes 3 minutes and 15 seconds to detect abnormality including the time to judge to be in the water.

 The unit continue to detect abnormality

while turned off.

 When the conditions below 1, 2 and forced

outdoor unit stop condition are met

1. Detected that

[liquid pipe temperature –

room temperature] -10deg[-18°F] for

30 minutes constantly.

2. Float switch detects to be in the water

for 15 minutes constantly.

*Before Forced outdoor unit stop Condition

is met, the unit always detects - above.

 The indoor unit detecting above stops

due to detecting abnormality the outdoor

unit in same refrigerant system

(compressor is inhibited to operate). The

unit which stops due to detecting

abnormality displays <2502>.

 Detection timing of forced outdoor unit stop

Constantly detected during unit operation

and stop

 Releasing of forced outdoor unit stop

Reset power supply of both abnormal indoor unit and its outdoor unit in same

refrigerant system. Forced outdoor unit stop cannot be released by remote

controller OFF.

Causes

 Malfunction of drain pump  Defective drain

Clogged drain pump Clogged drain pipe  Defective moving part of float switch Foreign matter on the moving part of float switch(ex. sludge etc.)

 Defective float switch

 Defective indoor controller board  Defective driving circuit of drain pump  Defective input circuit of float switch

 Both of above mentioned ~ and the

indoor linear expansion valve full-closed failure (leakage) happens synchronistically.

(Note) Address/Attribute displayed on the remote controller shows the indoor unit which is cause of trouble.

Check points

 Check if drain pump works.  Check drain function.

 Check moving part of float switch.

 Check the value of resistance with the

float switch ON/OFF.

 Change the indoor controller board.

 Check whether the indoor linear

expansion valve leaks or not.

NOTE )

Above-mentioned ~ and ~ are detected independently.

2503

Drain sensor (THd, DS)

When the drain sensor detects short/open

while the operation.

Compressor overcurrent interruption

4100

(When compressor locked)

Abnormal if overcurrent of DC bus or compressor is detected within 30 seconds after

compressor starts operating.

Over current : 27.5A



 Connector (CN31) contact failure (insertion failure)

 Thermistor wiring disconnection or half disconnection

 Thermistor defective  Indoor controller board (detecting circuit)

failure

 Stop valve is closed.  Decrease of power supply voltage

Looseness, disconnection or converse of



compressor wiring connection

 Defective compressor  Defective outdoor power board

 Check whether the indoor controller

board connector (CN31) is disconnected or not.  Check whether the thermistor wiring is disconnected or not.

 Check the resistance of thermistor. If abnormality is not found in the

method of the above-mentioned from  to , it is defective of the indoor controller board.

 Open stop valve.  Check facility of power supply.  Correct the wiring (U·V·W phase) to

compressor.

 Check compressor.  Replace outdoor power circuit board.

Display

4220

Abnormal point and detecting method

Overvoltage or voltage shortage

Abnormal if any of followings are detected

during compressor operation;

• Decrease of DC bus voltage to 310V

• Instantaneous decrease of DC bus voltage to 200V.

• Increase of DC bus voltage to 400V.

• Decrease of input current of outdoor unit to

0.5A only if operation frequency is more than or equal to 40Hz or compressor current is more than or equal to 5A.

 Decrease of power supply voltage  Disconnection of compressor wiring  Defective 52C  Defective ACT module  Disconnection or loose connection of

CN5 on the outdoor power circuit board  Defective 52C drive circuit of outdoor power circuit board  Disconnection or loose connection of CN2 on the outdoor power circuit board  Defective ACT module drive circuit of outdoor controller circuit board



Disconnection or loose connection of CNAF

Causes

Check points

 Check the facility of power supply.  Correct the wiring (U·V·W phase) to

compressor. (Outdoor power circuit board).

 P48NHMU

(1)

(-BS) : Replace 52C. P36NHMU(-BS)/NHMUR1(-BS) P48NHMU

(-BS)/MHMUR3(-BS) :

Replace noise filter circuit board

(Including 52C)

 Replace ACT module.

(Refer to 9-9. Test point ; the item of ACTM)

 Check CN5 wiring on the outdoor power

circuit board.

 Replace outdoor power circuit board.

 Check CN2 wiring on the outdoor power

circuit board.

 Replace outdoor power circuit board.  Check CNAF wiring.

 The 4220 error history can be confirmed

Notes in case of 4220 error (Over voltage or voltage shortage)

with SW1 No.189.

(Refer to 9-9. Test point ; the item of ACTM)

In PUMY models, bus voltage is controlled using ACTM. If ACTM is failed, bus voltage becomes uncontrollable and stops abnormally. To check the normality of operation, see DC bus voltage SW1 9-10. No.45, or determine DC bus voltage of the both sides of condenser C510 or CNDC connector which is on Multi controller board using a tester.

1. Check point

Self check switch No.45 SW1 : 10110100

Tester check

The voltage (DC) of the condenser C510 or CNDC connector which is on Multi controller board

21345678

2. Check the voltage

ACTM condition DC bus voltage

Normal Target voltage 340-350V (DC)

Failure / no operation Less than 310V (DC) or over 400V (DC)

Caution : Determine the voltage for 10 seconds after the compressor has operated. ACTM does not operate when the compressor is

stopping (Including constraint electric continuity) and for 10 seconds after the compressor start to operate. When bus voltage is abnormal, see the table above (1.Check point) and check such as input voltage, wiring, 52C relay. To check ACTM itsef, see 9-9. Test point ; the item of ACTM. In case of ACTM failure, also check if there is the breaking of a wire in rush current protect resistor. As for PUMY-P48NHMU

P36NHMU/NHMUR1(-BS), P48NHMU

Temperature of heatsink

4230

Abnormal if heat sink thermistor(TH8) detects

temperature indicated below 85 [185°F]

(1)

(-BS), rush current protect resistor is resistor RS (not mounted on the board). For PUMY-

,/NHMUR3(-BS) resistor RS1 is mounted on noise filter circuit board.

 The outdoor fan motor is locked.

 Check outdoor fan.  Failure of outdoor fan motor  Airflow path is clogged.  Rise of ambient temperature

 Check air flow path for cooling.

 Check if there is something which

causes temperature rise around outdoor

unit.

(Upper limit of ambient temperature is 46

[115°F].)

Turn off power, and on again to check if

4230 is displayed within 30 minutes.

 Defective thermistor

 Check thermistor <TH8> temperature

by microprocessor.

 Defective input circuit of outdoor power

 Replace outdoor power circuit board.

circuit board

(1) Power module

4250

Check abnormality by driving power module in

case overcurrent is detected.

 Failure of outdoor fan drive circuit

 Outdoor stop valve is closed.  Decrease of power supply voltage  Looseness, disconnection or converse

of compressor wiring connection

 Replace outdoor controller circuit board.

 Open stop valve.

 Check facility of power supply.

 Correct the wiring (U·V·W phase) to

compressor.

(Outdoor power circuit board).

 Defective compressor  Defective outdoor power circuit board

 Check compressor.

 Replace outdoor power circuit board.

Contimued on the next page.

From the previous page.

Display

4250

4400

5101

Abnormal point and detecting method

(2) Compressor overcurrent interruption

Abnormal if overcurrent DC bus or compressor is detected after compressor starts operating for 30 seconds.

Over current : 27.5A

Outdoor fan motor

Abnormal if rotational frequency of the fan motor is not detected during DC fan motor operation. Fan motor rotational frequency is abnormal if;

• 100 rpm or below detected continuously

for 15 seconds at 20 [68°F]: or more

outside air temperature

• 50 rpm or below or 1500 rpm or more detected continuously for 1 minute.

Room temperature thermistor (TH21)

When controller detects short (high temp.)/open (low temp.) in thermistor during the operation, the operation stops and the operation changes to protect mode of restarting in 3 minutes. If the thermistor does not recover in 3 minutes, the operation stops due to detecting abnormality. In this time, <5101> is displayed. Then, if the thermistor recover in 3 minutes, it operates normally.

Short: Detected 90 [194°F] or more

Open: Detected –40 [-40°F] or less

Discharge/Compressor temperature thermistor (TH4)



When controller detects short/open in thermistor during the operation, the outdoor unit stops once and restarts operation in 3 minutes. When the detected temperature is normal at just before of restarting, the outdoor unit restarts.



When controller detects short/open in thermistor at just before of restarting, the unit stops due to detecting abnormality. In this time, <5101> is displayed.



For 10 minutes after starting compressor, for defrosting or for 3 minutes after recover of defrosting, above-mentioned short/open are not detected.

Short: 216 [421°F] or more (1k) Open: 0 [32°F] or less (700k)

Note) When outer temperature thermistor (TH7) is 5 [41°F] or less on cooling, open detecting is not determined as abnormality.

Causes

 Stop valve of outdoor unit is closed.  Decrease of power supply voltage  Looseness, disconnection or converse

of compressor wiring connection

 Defective fan of indoor/outdoor units  Short cycle of indoor/outdoor units  Defective input circuit of outdoor

controller board

 Defective compressor

Failure in the operation of the DC fan motor





Failure in the outdoor circuit controller board

 Connector (CN20) contact failure

 Thermistor wiring disconnection or

half disconnection

 Thermistor failure

 Detecting circuit failure in the

indoor controller board

 Connector (TH4) contact failure Check whether the connector (TH4)

 Thermistor wiring disconnection or

half disconnection

 Thermistor failure Check the resistance of thermistor;

 Multi controller board input circuit

failure

 Open stop valve.  Check facility of power supply.  Correct the wiring (U·V·W phase) to

compressor. (Outdoor power circuit board)

 Check indoor/outdoor fan.  Solve short cycle.  Replace outdoor controller circuit board.

 Check compressor

 Before the replacement of the outdoor controller circuit board, disconnect the wiring to compressor from the outdoor

power circuit board and check the output voltage among phases, U, V, W, during test run (SW7-1 ON). No defect on board if voltage among phases (U-V, V-W and W-U) is same. Make sure to perform the voltage check with same performing frequency.

 Check or replace the DC fan motor.

 Check the voltage of the outdoor circuit

controller board during operation.

 Replace the outdoor circuit contrlooer board. (when the failure is still indicated even after performing the remedy 1 above.)



Check whether the connector (CN20) in the indoor controller board is connected or not.



Check whether the thermistor wiring is disconnected or not.



Check the resistance of thermistor; 0 [32°F]····· 15k

10 [50°F]····· 9.6k 20 [68°F]····· 6.3k 30 [86°F]····· 4.3k 40 [104°F]··· 3.0k



When there is no problem in above mentioned , replace the indoor controller board.



in the multi controller board is connected or not.



Check whether the thermistor wiring is disconnected or not.



When the resistance is not below value, replace the thermistor. 0 [32°F]····· about 700k 10 [50°F]····· about 410k 20 [68°F]····· about 250k 30 [86°F]····· about 160k 40 [104°F]··· about 104k

Set the SW1 to



When the temperature in multi controller board is not an actual temperature, replace the multi controller board.

1.3: Open

Check points

21345678

219.4: Short

Display

5102

Abnormal point and detecting method

Liquid pipe temperature thermistor (TH22)

Causes

Check points

When the thermistor detects short/open during the operation, the operation stops and the operation changes to protect mode of restarting in 3 minutes. If the thermistor does not recover in 3 minutes, the operation stops due to detecting abnormality. In this time, <5102> is displayed. Then, if the thermistor recover in 3 minutes, it operates normally.

Short: Detected 90 [194°F] or more

Open: Detected -40 [-40°F] or less

Low pressure saturation temperature thermistor (TH6)





When controller detects short/open in thermistor at just before of restarting, the unit stops due to detecting abnormality. In this time, <5102> is displayed.



For 10 minutes after starting compressor, heating mode, above-mentioned short/open are not detected.

Short: 90 [194°F] or more

Open: -40 [-40°F] or less



Connector (CN21 or CN44) contact failure



Thermistor wiring disconnection or half disconnection



Thermistor failure



Detecting circuit failure in the indoor controller board



Connector (TH6) contact failure Check whether the connector (TH6)



Thermistor wiring disconnection or half disconnection



Thermistor failure Check the resistance of thermistor;



Check whether the connector (CN21 or CN44) in the indoor controller board is connected or not.



Check whether the thermistor wiring is disconnected or not.



Check the resistance of thermistor;

0 [32°F] ·····15k

10 [50°F] ·····9.6k

20 [68°F] ·····6.3k

30 [86°F] ·····4.3k

40 [104°F] ···3.0k



When there is no problem in above mentioned , replace the indoor controller board.



in the multi controller board is connected or not.



Check whether the thermistor wiring is disconnected or not.



0 [32°F]·····15k

10 [50°F]·····9.6k

20 [68°F]·····6.3k

30 [86°F]·····4.3k

40 [104°F]···3.0k



Multi controller board input circuit failure

21345678



Set the SW1 to

When the temperature in multi controller board is not an actual temperature, replace the multi controller board.

-42.5: Open

91.9: Short

Display

5103

Abnormal point and detecting method

Gas pipe temperature thermistor (TH23)

When the thermistor detects short/open after 3minutes-continuous thermo ON during cooling or dry operation, the operation stops and the operation changes to protect mode of restarting in 3 minutes. If the thermistor does not recover in 3 minutes, the operation stops due to detecting abnormality. In this time, <5103> is displayed. Then, if the thermistor recovers in 3 minutes, it operates normally.

Short: Detected 90 [194°F] or more

Open: Detected -40 [-40°F] or less

Causes



Connector (CN29 or CN44) contact failure



Thermistor wiring disconnection or half disconnection



Thermistor failure Check the resistance of thermistor;



Check whether the connector (CN29 or CN44) in the indoor controller board is connected or not.



Check whether the thermistor wiring is disconnected or not.



10 [50°F]·····9.6k

20 [68°F]·····6.3k

30 [86°F]·····4.3k

40 [104°F]···3.0k

Check points

0 [32°F]·····15k

5105

Pipe temperature / judging defrost thermistor (TH3)





When controller detects short/open in thermistor at just before of restarting, the unit stops due to detecting abnormality. In this time, <5105> is displayed.



For 10 minutes after starting compressor, for defrosting or for 3 minutes after recover of defrosting, above-mentioned short/open are not detected.

Short: 88 [190°F] or more (0.4k)

Open: -39 [-38°F] or less (115k



Detecting circuit failure in the indoor controller board



Connector (TH3) contact failure Check whether the connector (TH3) in



Thermistor wiring disconnection or half disconnection



Thermistor failure Check the resistance of thermistor;

)



When there is no problem in above mentioned , replace the indoor controller board.



the multi controller board is connected or not.



Check whether the thermistor wiring is disconnected or not.



When the resistance is not below value, replace the thermistor.

0 [32°F]·····15k

10 [50°F]·····9.6k

20 [68°F]·····6.3k

30 [86°F]·····4.3k

40 [104°F]···3.0k

Multi controller board input circuit



failure

21345678



Set the SW1 to

When the temperature in multi controller board is not an actual temperature, replace the multi controller board.

-42.5: Open

91.9: Short

Display

5106

Abnormal point and detecting method

Outdoor temperature thermistor (TH7)





When controller detects short/open in thermistor at just before of restarting, the unit stops due to detecting abnormality. In this time, <5106> is displayed.



For 10 minutes after starting compressor, for defrosting or for 3 minutes after recover of defrosting, above-mentioned short/open are not detected.

Short: 90 [194°F] or more Open: -40 [-40°F] or less

Causes

Check points

 Connector (TH7) contact failure  Check whether the connector (TH7)

in the multi controller board is connected or not.

 Thermistor wiring disconnection or half disconnection

 Thermistor failure Check the resistance of thermistor;



Check whether the thermistor wiring is disconnected or not.



When the resistance is not below value, replace the thermistor.

0 [32°F]·····15k 10 [50°F]·····9.6k 20 [68°F]·····6.3k 30 [86°F]·····4.3k 40 [104°F]···3.0k

21345678

 Multi controller board input circuit failure



Set the SW1 to When the temperature in multi

controller board is not an actual temperature, replace the multi controller board.

-42.5: Open

91.9: Short

5110

Heatsink temperature thermistor (TH8)

(internal thermistor of power module)



When controller detects short/open in thermistor during the operation, the outdoor unit stops once and restarts operation in 3minutes. When the detected temperature is normal at just before of restarting, the outdoor unit restarts.



When controller detects short/open in thermistor at just before of restarting, the unit stops due to detecting abnormality. In this time, <5110> is displayed.



For 10 minutes after starting compressor, for defrosting or for 3minutes after recover of defrosting, above-mentioned short/open are not detected.

Short:102 [216°F] or more Open: -27 [-17°F] or less

 Connector (TH8) contact failure.

 Thermistor wiring disconnection or

half disconnection.

 Thermistor failure

 Power board input circuit failure

 Wrong setting of model setting switch

(SW4)



Check whether the connector (TH8) in the power circuit board.



Check whether the thermistor wiring is disconnected or not.



Check the resistance of thermistor; When the resistance is not below value, replace the thermistor.

0 [32°F]·····180k 10[50°F]·····105k 20 [68°F]·····63k 30 [86°F]·····39k 40 [104°F]···25k

21345678



Set the SW1 to

When the temperature in multi controller board is not an actual temperature, replace the power board.

-81.0: Open

999.9: Short

 See 9-5. SWITCH FUNCTION TABLE

; SW4 model switching, then set correctly. *When SW4-1 is on, it will be 5110 error. Set correctly.

Display

5201

Abnormal point and detecting method

Pressure sensor (63HS)



When detected pressure in high-pressure sensor is 1 MPa [145PSIG] or less during the operation, the compressor stops and restarts operation in 3 minutes.

When the detected pressure is 1 MPa



[145PSIG] or less at just before of restarting, the compressor stops due to detecting abnormality. In this time, <5201> is displayed.



For 3minutes after starting compressor, for defrosting or for 3 minutes after recover of defrosting, abnormality is not determined as abnormality.

Causes

 High-pressure sensor failure Check the high-pressure sensor.

 Internal pressure decrease by gas

leakage

 Connector contact failure, disconnection





Check the internal pressure.

Check the high-pressure sensor.



Check points

Current sensor error

5300

Abnormal if current sensor detects –1.5A to

1.5A during compressor operation. (This error is ignored in case of SW7-1 ON.)

Abnormal if input current exceeds 38A or 34A continuously 10 seconds. (Current sensor on noise filter board detects input current.)

Disconnected float switch connector

5701

Abnormal if detected that the float switch connector is disconnected(open) during operation

6600

Duplex address error

Detected error when transmission of unit with the same address is confirmed.

Note) Address/Attribute displayed on the remote controller shows the controller detecting abnormality.

6602

Transmission processor H/W error

'' 1 '' shows on the transmission line though the transmission processor transmitted '' 0''.

remote controller shows the controller detecting abnormality.

 Multi controller board input circuit failure

 Disconnection of compressor wiring  Defective circuit of current sensor on

outdoor power circuit board

 Decrease of power supply voltage  Check the facility of power supply.

1) Disconnection of connecor(CN4F)  Check the disconnetion of

 There are 2 units or more with the same address among the outdoor unit or indoor unit or lossnay controller, remote controller.

 When noise has occurred in the transmission signal, and the signal

has changed.

 When the wiring for either of the indoor unit, the outdoor unit or lossnay transmission line is constructed or polarity is changed with the power supply turned on, the transmission waves change in case that the transmission data collides mutually. It causes to detect error.

 Transmission processor circuit failure

 When the transmission data has changed by the noise.



Check the high-pressure sensor.

 Correct the wiring (U·V·W phase) to compressor. (Outdoor power circuit board).  Replace outdoor power circuit board.

connector(CN4F) on the indoor controller board.



Look for the unit, which is source of abnormality with the same address. When the same address is found, correct the address and turn off power supply of outdoor unit, indoor unit, and lossnay for 2 minutes or more as the same time. Then, turn on power supply.



Check the transmitted wave and the noise on the transmission line.



When the transmission line is constructed with the current flowed, turn off power supply of outdoor unit, indoor unit and lossnay for 2 minutes or more as the same time. Then, turn on power supply.Note) Address/Attribute displayed on the



Check the transmitted wave and the noise on the transmission line.

Display

6603

Abnormal point and detecting method

Transmission bus busy error

Over error by collision The transmission processor cannot be



Abnormality when the state, which cannot be transmitted by collision of transmission, is consecutive for 8 to 10minutes.



transmitted since a short cycle voltage of the noise etc. mixes on the transmission line consecutively.

Causes

Check points



Check whether the transmission line of the indoor unit, fresh master, lossnay and remote controller is connected to the outdoor unit terminal board (TB7) for centralized controller or not.



The state that data cannot to be output to the transmission line by the noise happens for 8 to 10minutes consecutively.

Note) Address/Attribute displayed on the remote controller shows the controller detecting abnormality.

6606

Signal communication error with transmission processor

Signal communication error between unit processor and transmission processor

Note) Address/Attribute displayed on the remote controller shows the controller detecting abnormality.



The transmission volume increases and cannot be transmitted since the wiring method is mistaken and the routing technique to the terminal board (TB3) for the transmission line of the outdoor unit and the terminal board (TB7) for centralized control cannot be transmitted.



The share becomes high since the data exists together to other transmitted data by a defective repeater (function which connects and intercepts the transmission of controlling system and centralized control system), and it causes abnormal detection.

The data of the unit/transmission



processor was not normally transmitted due to accidental disturbance such as noise and lightening surge.

Check whether the transmission line



with the other refrigerant system of the indoor unit and lossnay is connected to the outdoor unit terminal board (TB3) for transmission or not.

Check whether the outdoor unit



terminal board for transmission line (TB3) and for centralized controller (TB7) are connected or not.

Check the transmitted wave and the



noise on the transmission line.

Turn off power supply of outdoor unit, indoor unit, and lossnay for 2 minutes or more at the same time. Then, turn on power supply. It normally recovers from the malfunction that happens by chance. When same abnormality occurs again, it is defective of the controller.



The address transmission from the unit processor was not normally transmitted by the hardware of transmission processor defective.

Display

6607

Abnormal point and detecting method

No ACK (Acknowledgement)

Abnormality which controller of the



sending side detects when there is no answer (ACK) from other side though data was transmitted once. It is detected 6 times every 30seconds continuously.

Note) Address/Attribute displayed on the remote controller shows the controller, which did not send back replay (ACK).

Causes



Factor that does not related to origin

Since the address switch was changed with the current passed, the unit in the last address does not exist.

Decline of transmission voltage and



signal by transmission line tolerance over

· The furthest point···200m

· Remote controller line···(12m) (Refer to 8-3.)



Decline of transmission line voltage and signal by unmatched kind of line.

· Shield line-CVVS,CPEVS Line diameter···1.25 Aor more



Decline of transmission line voltage and signal by a number of over-connected units.

Miss operation of origin controller,



which happens by chance.

Original controller defective



Check points

Turn off power supply of outdoor unit,



indoor unit fresh master and lossnay for 2 minutes or more at the same time. Then, turn on power supply. It recovers normally at the malfunction that happens by chance.

Check the address switch in the



address, which occurs abnormality.

Check whether the transmission line



is connected / loosen or not at origin. (Terminal board or connector)

Check whether the transmission line



tolerance is over or not.

Check whether the kind of



transmission line is mistaken or not.

When there is any trouble from above -, turn off power supply of outdoor unit, indoor unit and lossnay for 2 minutes or more at the same time. Then, turn on power supply.



When the cause of displayed address and attribute is on the outdoor unit side.

(The indoor unit detects when there is no reply (ACK) on transmitting from the indoor unit to the outdoor unit.)



When the cause of displayed address and attribute is on the indoor unit side.



Contact failure of outdoor unit or indoor unit transmission line

Indoor unit transmission connector



(CN2M) disconnection

Sending/receiving signal circuit failure



in the indoor/outdoor unit



When operating with multi refrigerant system indoor units, the remote controller transmits the signal to the indoor unit after the other refrigerant system outdoor unit is turned off or turned on again in 2 minutes, and detects abnormality.



Contact failure of remote controller or indoor unit transmission line.

When there is not any trouble in single refrigerant system (1 outdoor unit) from above -, controller defective in displayed address and attribute. When there is not any trouble in different refrigerant system (2 outdoor unit or more) from above -, determine it after .

When the address, which should not



exist, is an origin, since there is the indoor unit which memorizes the address data, cancel the unnecessary address data by the manual setting function of remote controller. However, they are limited to the system, which sets the group between different refrigerant systems, or which fresh master /lossnay are connected.

When there is not any trouble from above -, replace the displayed address/attribute controller board.

In this time, when the error does not recover to normal, the outdoor unit multi controller board (repeater circuit) defective is expected.

Check the recovery by replacing the multi controller board one by one.

(The remote controller detects when there is no reply (ACK) on transmitting from the remote controller to the indoor unit.)



Indoor unit transmission connector (CN2M) disconnection.

Sending/receiving signal circuit failure



in the indoor unit or remote controller.

Continued on the next page.

From the previous page.

Display

6607

Abnormal point and detecting method



When the cause of displayed address and attribute is on the remote controller side.

(The indoor unit detects when there is no reply (ACK) on transmitting from the indoor unit to the remote controller unit.)



When the cause of displayed address and attribute is on the fresh master side.

(The indoor unit detects when there is no reply (ACK) on transmitting from the indoor unit to the fresh master.)

Causes

When operating with multi refrigerant



system indoor units, the indoor units transmits the signal to the remote controller after the other refrigerant system outdoor unit is turned off or turned on again in 2 minutes, and detects abnormality.

Contact failure of remote controller or



indoor unit transmission line



Indoor unit transmission connector (CN2M) disconnection



Sending/receiving signal circuit failure in the indoor unit or remote controller



When synchronized operating with other refrigerant system fresh master, the indoor units transmits the signal to the fresh master after the fresh master and same refrigerant system outdoor unit is turned off or turned on again in 2 minutes, and detects abnormality.



Contact failure of fresh master or indoor unit transmission line



Indoor unit or fresh master transmission connector (CN2M) disconnection



Sending/receiving signal circuit failure in the indoor unit or fresh master

Check points



When the cause of displayed address and attribute is on the lossnay side.

(The indoor unit detects when there is no reply (ACK) on transmitting from the indoor unit to the lossnay.)



When the controller of displayed address and attribute is not recognized

When the lossnay power supply is Off,



the indoor unit detects abnormality at signal transmitting to the lossnay.



When synchronized operating with other refrigerant system lossnay, the indoor units transmits the signal to the lossnay after the lossnay and same refrigerant system outdoor unit is turned off or turned on again in 2 minutes, and detects abnormality



Contact failure of lossnay or indoor unit transmission line



Indoor unit transmission connector (CN2M) disconnection

Sending/receiving signal circuit failure



in the indoor unit or lossnay

Since the address switch was changed



with the current passed, the unit in the last address does not exist.

Since the fresh master/lossnay



address are changed after synchronized setting of fresh master / lossnay by the remote controller, abnormality is detected at transmitting from the indoor unit.

Display

6608

Abnormal point and detecting method

No response

Though there was a replay (ACK) of having received signal from the other side, it is the abnormality when the response command does not return. The sending side detects the abnormality continuously six times every 30 seconds. Note) Address/Attribute displayed on the remote controller shows the controller, which did not response.

Causes



Transmission repeats the failure by the noise etc.



Decline of transmission voltage and signal by transmission line tolerance over

· The furthest point···200 m [656 ft]

· Remote controller line···(12 m [39 ft]) (Refer to 8-3.)



Decline of transmission line voltage and signal by unmatched kind of line

· Shield wire-CVVS,CPEVS

Wire diameter···1.25 A [AWG16] or more



Mis-operation of origin controller, which happens by chance

Check points

Check the transmission wave and



noise on the transmission line.



Turn off power supply of outdoor unit, indoor unit and lossnay for 2 minutes or more at the same time. Then, turn on power supply again. It recovers normally at the malfunction that happens by chance. When same abnormality occurs again, it is defective of displayed address and attribute.

6831 6834

6832 6833

7100

Signal reception(Remote controller)

Following symptoms are regarded as abnormality.

1) When the remote controller cannot receive the signal from indoor controller normally even once for 3 minutes.

2) When the remote controller cannot

receive the signal even once for 2 minutes

Signal transmission(Remote controller)

Following symptoms are regarded as abnormality.

1) When sub-remote controller cannot transmit the signal to the transmission path for 6 minutes.

2) When the remote controller cannot finish transmitting the signal for 30 times on end.

Total capacity

When connected total models of the indoor units exceed the specified level (130% of the outdoor unit models), error code <7100> is displayed.



Defect of the transmission and reception circuit of the remote controller



Defect of the transmission and reception circuit of the indoor controller board



Noise occurs on the transmission line of the remote controller.



All remote controllers are set as sub-remote controller.



Defect of the transmission and reception circuit of the remote controller



Noise occurs on the transmission line of the remote controller.



There are 2 main remote controllers.

Connecting total models of the indoor



unit exceed the specified level.

· PUMY-P36NHMU/NHMUR1 ( ~ code 26)

· PUMY-P48NHMU(1) ( ~ code 34)

· PUMY-P48NHMU2/NHMUR3 ( ~ code 35)

~

Perform a check of the remote controller. According to the results, perform the following disposals.

• When "RC OK" is displayed The remote controller is normal. Turn off the power supply and turn it on again. If "HO" or "PLEASE WAIT" is displayed for 4 minutes or more, replace the indoor controller board.

• When "RC NG" is displayed Replace the remote controller.

• When "RC 6832 or 6833" or "ERC 00-66" is displayed These displays may be due to noise, etc.

 Set one remote controller to main

remote controller and the other to sub-remote controller.



Check the total models of connected indoor unit.



Check the model code registration switch (indoor controller board SW2) of connected indoor unit.



There is a mistake in the registration of model name code of the outdoor unit.

Check the model code registration switch (outdoor multi controller board SW4) of the outdoor unit.

Display

7101

Abnormal point and detecting method

Capacity code error

When the connected indoor unit models cannot be connected, <7101> is displayed.

Causes

The indoor unit models is not possible to connect.

The indoor unit of 06-54 (code 4-28) is possible to connect.

Check points

Check the model code registration



switch (indoor controller board SW2) in the connected indoor unit.

The outdoor unit SW1 operation can



check model code of the connected indoor units.

Code of indoor unit No.1

Code of indoor unit No.2

Code of indoor unit No.3

Code of indoor unit No.4

Code of indoor unit No.5

Code of indoor unit No.6

Code of indoor unit No.7

21345678

7102

Number of connecting unit over

When the connecting unit exceeds a number of limitations, error code <7102> is displayed.

Even if the indoor unit is not connected, becomes <7102> is display.

Connecting unit exceeds a number of limitations. It is assumed abnormality excluding the following cases;



The indoor unit can be totally connected up to 6(P36)/8(P48) units. The indoor unit can be connected up to 8 units.



Ventilation unit connecting is only 1unit.

7105

Address setting error

Address setting of the outdoor unit is wrong.

Addresses miss setting of the outdoor unit.

The outdoor unit is not set in 000 or in the range of 51-100.

7111 When an old type M-NET remote

Remote controller sensor

In the case of network remote controller, it is an abnormality when incapable response returns from the M-NET remote

controller is used, and the remote controller sensor is specified (SW1-1 is ON).

controller during the operation.

21345678

Code of indoor unit No.8

Check whether the connecting unit exceeds a number of limitations or not.

Check the address setting of the outdoor unit. The address should be set in 000 or 51-100.

When the setting is out of the range, reset it, turn off power supply of the outdoor unit, indoor unit and lossnay for 2minutes or more at the same time, and turn on power supply again.

Replace the remote controller to M-NET remote controller.

0403

Serial communication error

Abnormal if serial communication between outdoor multi board and outdoor power board is defective.

 Breaking of wire or contact failure of connector CN2  Breaking of wire or contact failure of connector CN4  Defective communication circuit of outdoor power board  Defective communication circuit of outdoor multi board for power board

 Check connection of each connector CN2, CN4.

 Replace outdoor power board.

 Replace outdoor multi board.

9-2. REMOTE CONTROLLER DIAGNOSIS

· MA remote controller is equipped with the diagnosis function

If the air conditioner cannot be operated from the remote controller, diagnose the remote controller as explained below.

 First, check that the power-on indicator is lit.

If the correct voltage (DC12 V) is not supplied to the remote controller, the indicator will not light. If this occurs, check the remote controller's wiring and the indoor unit.

Power on indicator

 Switch to the remote controller self-diagnosis mode.

Press the

change as shown below.

 Remote controller self-diagnosis result

[When the remote controller is functioning correctly]

CHECK

button for 5 seconds or more. The display content will

Press the

[When the remote controller malfunctions] (Error display 1) "NG" blinks. → The remote controller's transmitting-receiv-

FILTER

button to start self-diagnosis.

ing circuit is defective.

Check for other possible causes, as there is no problem with the remote controller.

[Where the remote controller is not defective, but cannot be operated.] (Error display 2) [E3], [6833] or [6832] blinks. → Transmission is not possible.

There might be noise or interference on the transmission path, or the indoor unit or other remote controllers are defective. Check the transmission path and other controllers.

 To cancel remote controller diagnosis

Press the approximately 30 seconds, the state in effect before the diagnosis will be restored.

CHECK

button for 5 seconds or more. Remote controller diagnosis will be cancelled, "PLEASE WAIT" and operation lamp will blink. After

The remote controller must be replaced with a new one.

(Error display 3)

The number of data errors is the difference between the number of bits sent from the remote controller and the number actually transmitted through the transmission path. If such a problem is occurring, the transmitted data is affected by noise, etc. Check the transmission path.

"ERC" and the number of data errors are displayed. → Data error has occurred.

When the number of data errors is "02":

Transmission data from remote controller

Transmission data on transmission path

9-3. REMOTE CONTROLLER TROUBLE

STAND BY DEFROST

CENTRALLY CONTROLLED

CHECK

°C

TEMP.

TIMER SET

ON OFF

CLOCK

ERROR CODE

1Hr.

NOT AVAILABLE

°C

FILTER

CHECK MODE

TEST RUN FUNCTION

ON/OFF

CHECK TEST

“ ” indicator: Appears when current is carried.

FILTER

(M-NET Remote controller)

(1) For M-NET remote controller systems

Symptom or inspection code Cause Inspection method and solution

Though the content of operation is displayed on the remote controller, some indoor units do not operate.

Though the indoor unit operates, the display of the remote controller goes out soon.

( ) is not displayed on the remote controller. (M-NET remote controller is not fed.)

"HO" keeps being displayed or it is displayed periodically. ("HO" is usually displayed about 3 minutes after the power supply of the outdoor unit is on.)

The remote controller does not operate though ( ) is displayed.

• The power supply of the indoor unit is not on.

• The address of the indoor units in same group or the remote controller is not set correctly.

• The group setting between outdoor units is not registered to the remote controller.

• The fuse on the indoor unit controller board is blown.

• The power supply of the indoor unit is not on.

• The fuse on the indoor unit controller board is blown.

• The power supply of the outdoor unit is not on.

• The connector of transmission outdoor power board is not connected.

• The number of connected indoor unit in the refrigeration system is over the limit or the number of connected remote controller is over the limit.

• M-NET remote controller is connected to MA remote controller cable.

• The transmission line of the indoor/outdoor unit is shorted or down.

• M-NET remote controller cable is shorted or down.

• Transmission outdoor power board failure.

• The power supply for the feeding expansion unit for the transmission line is not on.

• The address of the outdoor unit remains "00".

• The address of the indoor unit or the remote controller is not set correctly.

• MA remote controller is connected to the transmission line of the indoor/outdoor unit.

• The transmission line of the indoor/outdoor unit is connected to TB15.

• The transmission line of the indoor/outdoor unit is shorted, down or badly contacted.

• Check the part where the abnormality occurs.

 The entire system  In the entire refrigerant system  In same group only  1 indoor unit only

• Check the self-diagnosis LED of the outdoor unit.

• Check the items shown in the left that are related to the outdoor unit.

• Check the items shown in the left that are related to the indoor unit.

(2) For MA remote controller systems

Symptom or inspection code Cause Inspection method and solution

Though the content of operation is displayed on the remote controller, some indoor units do not operate.

Though the indoor unit operates, the display of the remote controller goes out soon.

( ) is not displayed on the remote controller. (MA remote controller is not fed.)

"PLEASE WAIT" keeps being displayed or it is displayed periodically. ("PLEASE WAIT" is usually displayed about 3 minutes after the power supply of the outdoor unit is on.)

The remote controller does not operate though ( ) is displayed.

• The power supply of the indoor unit is not on.

• Wiring between indoor units in same group is not finished.

• The indoor unit and Slim model are connected to same group.

• The fuse on the indoor unit controller board is blown.

• The power supply of the indoor unit (Master) is not on.

• In case of connecting the system controller, the setting of the system controller does not correspond to that of MA remote controller.

• The fuse on the indoor unit (Master) controller board is blown. The remote controller is not fed until the power supply of both indoor unit

and outdoor unit is on and the start-up of both units is finished normally.

• The power supply of the indoor unit is not on.

• The power supply of the outdoor unit is not on.

• The number of connected remote controller is over the limit (Maximum: 2 units) or the number of connected indoor unit that is over the limit (Maximum: 16 units).

• The address of the indoor unit is "00" and the address for the outdoor unit is the one other than "00".

• The transmission line of the indoor/outdoor unit is connected to TB15.

• MA remote controller is connected to the transmission line of the indoor/outdoor unit .

• The remote controller cable is shorted or down.

• The power supply cable or the transmission line is shorted or down.

• The fuse on the indoor unit controller board is blown.

• The power supply of the outdoor unit is not on.

• The power supply of the feeding expansion unit for the transmission line is not on.

• The setting of MA remote controller is not main remote controller, but sub-remote controller.

• MA remote controller is connected to the transmission line of the indoor/outdoor unit.

• The power supply of the indoor unit (Master) is not on.

• The transmission line of the indoor/outdoor unit is connected to TB15.

• The transmission line of the indoor/outdoor unit is shorted, down or badly contacted.

•The fuse on the indoor unit controller board is blown.

• Check the part where the abnormality occurs.

 The entire system  In the entire refrigerant system  In same group only  1 indoor unit only

• Check the self-diagnosis LED of the outdoor unit.

• Check the items shown in the left that are related to the outdoor unit.

• Check the items shown in the left that are related to the indoor unit.

9-4. THE FOLLOWING SYMPTOM DO NOT REPRESENT TROUBLE (EMERGENCY)

Symptom

Even the cooling (heating) operation selection button is pressed, the indoor unit cannot be operated. The auto vane runs freely.

Fan setting changes during heating.

Fan stops during heating operation. Fan does not stop while operation has been stopped. No setting of fan while start SW has been turned on.

Indoor unit remote controller shows “HO” or “PLEASE WAIT ” indicator for about 2 minutes when turning ON power supply. Drain pump does not stop while unit has been stopped. Drain pump continues to operate while unit has been stopped.

Display of remote controller

"Cooling (Heating)" blinks

Normal display

"Defrost "

Light out

STAND BY

“HO” blinks “PLEASE WAIT” blinks

Light out

—

CAUSE

The indoor unit can not cool (heat) if other indoor units are heating (cooling).

Because of the control operation of auto vane, it may change over to horizontal blow automatically from the downward blow in cooling in cause the downward blow operation has been continued for one hour. At defrosting in heating, hot adjusting and thermostat OFF, it automatically changes over to horizontal blow. Ultra-low speed operation is commenced at thermostat OFF. Light air automatically change over to set value by time or piping temperature at thermostat ON. The fan is to stop during defrosting.

Fan is to run for 1 minute after stopping to exhaust residual heat (only in heating). Ultra-low speed operation for 5 minutes after SW ON or until piping temperature becomes 35C. There low speed operate for 2 minutes, and then set notch is commenced. (Hot adjust control) System is being driven. Operate remote controller again after “HO” or “PLEASE WAIT” disappears.

After a stop of cooling operation, unit continues to operate drain pump for 3 minutes and then stops it. Unit continues to operate drain pump if drainage is generated, even during a stop.

9-5. INTERNAL SWITCH FUNCTION TABLE PUMY-P36NHMU/NHMUR1(-BS) PUMY-P48NHMU/NHMU

1/NHMU2/NHMUR3(-BS)

The black square (■) indicates a switch position.

Switch

SW U1 1s digit

SW U2 10ths digit

SW1 Digital Display Switching

SW2 Function Switching

SW3 Test run

Outdoor unit

SW4 Model Switching

Step

Rotary switch

1~8

Function

SWU2

(10ths digit)

OFF

Selects operating system startup

Connection Information Clear Switch

Abnormal data clear switch input

Pump down

Auto change over from Remote controller

ON/ OFF from outdoor unit

Mode setting

—

MODELS

1~6

PUMY-P36NHMU

PUMY-P48NHMU

SWU1

(1s digit)

234 567 8

Clear

Clear abnormal data

Run adjustment mode

Enable

Heating

SW4

OFF

123456

OFF

123456

Operation in Each Switch Setting

ON OFF When to Set

Before turning the power on

Can be set either during operation or not

Start upDoes not start up

Do not clear

Normal

Disable

—

OFF

Cooling

Before turning the power on

OFF to ON any time after the power is turned on

During compressor running

Before turning the power on

—

Any time after the power is turned on

+3

Before the power is turned on

Remarks

SWU2

(10ths digit)

SWU1

(1s digit)

OFF

234 567 8

OFF

234 56

OFF

Set for each capacity.

Normal

Inactive

Can be set when off or during operation

OFF to ON during compressor running

Can be set when off or during operation

OFF

234 567 8

SW5 Function switching

Pressure limitation value change

Change the indoor unit's LEV

opening at start

Fixing the indoor units linear expansion

valve opening Fix the operation frequency

Change the indoor unit's LEV opening

at defrost

Switching the target sub cool

During the FAN or COOL mode,and thermo-OFF or OFF in heating operation, set the opening of

linear expansion valve on indoor unit

Enable

Fix Normal

Enable

Active

During the FAN or COOL mode,and thermo-OFF

in heating operation, set the opening of linear expansion valve on indoor unit

Active Inactive

+1 SW5-7 Refrigerant shortage amount is measured during heating operation (Refrigerant piping is long etc.)

+2 SW5-8 Countermeasure against room temperature rise for indoor unit in FAN, COOL, and thermo-OFF (heating) mode. +3 (Note : This model switching is available for PUMY-P48NHMU1(-BS) and PUMY-P48NHMU2(-BS), PUMY-P48NHMUR3(-BS)

but not available for PUMY-P48NHMU(-BS) since it does not have the auxiliary heater function.)

DIP SW4-4 for primary heating control : Set DIP SW4-4 when power is turned off at unit DIP SW4-4 OFF : Disable primary heating function (Initial setting) DIP SW4-4 ON : Enable primary heating function

Switch

Step

Function

The black square (■) indicates a switch position.

Operation in Each Switch Setting

ON OFF When to Set

Remarks

SW6 Function switching

Outdoor unit

SW7 Function switching

SW8 Function switching

Switch of current limitation reading

in a different way

Restriction of maximum

frequency Ignore refrigerant filling

abnormality

Switching the target discharge

pressure (Pdm)

Switching (1) the target evaporation

temperature (ETm) Switching (2) the target evaporation

temperature (ETm)

Ignore current sensor

abnormality

Forced defrost

Silent mode/ Demand Control

Selection (see next page)

Change of defrosting control

—

—— —

Enable

—— —

Enable

—

Forced defrost Normal

Demand Control

Enable (For high humidity)

Normal

Silent mode

Normal

Before turning the power on

Can be set when off or during operation

Before turning the power on

—

During compressor running in heating mode

Can be set when off or during operation

OFF

234 567 8

—

OFF

234 56

OFF

9-6. OUTDOOR UNIT INPUT/OUTPUT CONNECTOR

State (CN51)





Auto change over (CN3N)



SW1



SW2







CN51

5 4 3



















CN3N

2 3





 Distant control board  Relay circuit  External output adapter (PAC-SA88HA-E)  Outdoor unit control board

1 : Error display lamp

2 : Compressor operation lamp

X, Y : Relay (Coil standard of 0.9W or less for DC 12V) X, Y : Relay (DC1mA)

 Remote control panel  Relay circuit  External input adapter (PAC-SC36NA)  Outdoor unit control board

SW1

Validity of SW1

SW2

Heating

OFF

Cooling

Invalidity of SW1

 Lamp power supply  Procure locally  Max. 10m[33ft]

 Relay power supply  Procure locally  Max. 10m[33ft]

Silent Mode / Demand Control (CN3D)



SW1



SW2





The silent mode and the demand control are selected by switching the Dip switch 8-1 on outdoor controller board. It is possible to set it to the following power sonsumption (compared with ratings) by setting SW1,2

Outdoor controller board DIP SW8-1

Silent mode Demand control

OFF ON





CN3D

2 3





 Remote control panel  Relay circuit  External input adapter (PAC-SC36NA)  Outdoor unit control board

SW1

Validity of SW1

SW2

Heating

OFF

Cooling

Invalidity of SW1

 Relay power supply  Procure locally  Max. 10m[33ft]



SW1 SW2 Function

ON OFF ON ON OFFONON

Silent mode operation

— OFF OFF

100%

75% 50%

(Normal)

(Stop)

9-7. HOW TO CHECK THE PARTS PUMY-P36NHMU(-BS) PUMY-P36NHMUR1(-BS)

PUMY-P48NHMU(-BS) PUMY-P48NHMU

1(-BS) PUMY-P48NHMU2(-BS)

PUMY-P48NHMUR3(-BS)

Parts name

Thermistor (TH3) <Outdoor pipe>

Thermistor (TH4) <

Discharge/Compressor

Thermistor (TH6) <

Low pressure saturated

temperature> Thermistor (TH7)

Thermistor (TH8) <Heatsink>

Fan motor(MF1,MF2)

Solenoid valve coil <Four-way valve> (21S4)

Motor for compressor (MC)

Check points

Disconnect the connector then measure the resistance with a tester. (At the ambient temperature 10~30 [50

Normal

TH4

160k~410k

°F~86°F])

Abnormal

TH3

TH6

4.3k~9.6k

Open or short

TH7

TH8

39k~105k

Refer to next page.

Measure the resistance between the terminals with a tester. (At the ambient temperature 20

Normal

1190 ± 100



[68°F])

Abnormal

Open or short

Measure the resistance between the terminals with a tester. (Winding temperature 20 [68°F])

Normal Abnormal

Solenoid valve coil <Bypass valve> (SV1)

Rush current protect resistor (RS) only PUMY-P48NHMU(1)(-BS)

52C relay (52C)

L3L2L1

T2T1

only PUMY-P48NHMU(1)(-BS)

Reactor (DCL)

0.188

Open or short

Measure the resistance between the terminals with a tester. (Surrounding temperature 20 [68

Normal

1183 ± 100

°F])

Abnormal

Open or short

Measure the resistance between the terminals with a tester.

Normal

5.6± 5%

Abnormal

Open* or short

*In case of open failure, check ACTM with a tester as well. (Refer to 9-9. Test point ; the item of ACTM)

Measure the resistance between the terminals with a tester.

Normal Abnormal

Coil (A1-A2)

Reference value : 1.45k

Open or short

Measure the resistance between the terminals with a tester.

Note : As for P36NHMU/NHMUR1(-BS) and P48NHMU2/NHMUR3(-BS), rush current protect resistor is mounted on noise filter curcuit board. (20



± 5% /10W)

Note : As for P36NHMU/NHMUR1(-BS) and P48NHMU2/NHMUR3(-BS), 52C relay is mounted on noise filter curcuit board. (Reference value : 155

 (typ)

)

Normal

Reference value : 0.04

Abnormal

Open or short*

*Because the resistor of the reactor is little, it is difficult to determine if it is short or normal with an ordinary tester.

Check method of DC fan motor (fan motor / outdoor controller circuit board)

Notes



· High voltage is applied to the connecter (CNF1, 2) for the fan motor. Pay attention to the service.

· Do not pull out the connector (CNF1, 2) for the motor with the power supply on. (It causes trouble of the outdoor controller circuit Self check



Symptom : The outdoor fan cannot turn around.

Fuse check

Check the fuse (F500) on outdoor controller board.

board and fan motor.)

Did the fuse blow?

Yes

Replace outdoor controller board (MULTI.B.) (C.B) and fan motor (MF1, 2).

Wiring contact check

Contact of fan motor connector (CNF1, 2)

Is there contact failure?

Yes

Recover wiring.

Power supply check(Remove the connector (CNF1, 2))

Measure the voltage in the outdoor controller circuit

TEST POINT

 : VDC (between 1 (+) and 4 (-) of the fan connector):

board.

VDC DC280-340V (When ACTM stops), DC350V (When ACTM is operating)

TEST POINT  : VCC (between 5 (+) and 4 (-) of the fan connector): VCC DC15V

Is the voltage normal?

Replace outdoor

controller board.

Yes

Replace the fan motor.

Yes

Check the operation of fan. END

Replace outdoor controller board.

Check the operation. END

Replace the fan motor.

㪫㪜㪪㪫㪪㩷㪧㪦㪠㪥㪫㩷㽵㩷㪭

㪫㪜㪪㪫㪪㩷㪧㪦㪠㪥㪫㩷㽴㩷㪭㫊㫇

㪝㪞

㪤㫌㫃㫋㫀㩷㪺㫆㫅㫋㫉㫆㫃㫃㪼㫉㩷㪹㫆㪸㫉㪻

㪝㪘㪥㩷㪤㪦㪫㪦㪩䇭㩿㪤㪝㪈㪀

㪠㫅㫍㪼㫉㫋㪼㫉

㪤㫆㫋㫆㫉

㪝㪘㪥㩷㪤㪦㪫㪦㪩䇭㩿㪤㪝㪉㪀

㪠㫅㫍㪼㫉㫋㪼㫉

㪤㫆㫋㫆㫉

㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㪄㪕㩷㩷㫉㫆㫋㪸㫋㫀㫆㫅㩷㫊㫀㪾㫅㪸㫃㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㪓㪄㩷㪺㫆㫅㫋㫉㫆㫃㩷㫍㫆㫃㫋㪸㪾㪼㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㪓㪄㩷㫇㫆㫎㪼㫉㩷㫊㫌㫇㫇㫃㫐㩷㩿㪾㪸㫋㪼㩷㪻㫉㫀㫍㪼㪀

㪻㫉㫀㫍㪼㫉

㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㪞㫉㫆㫌㫅㪻

㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㪓㪄㩷㫇㫆㫎㪼㫉㩷㫊㫌㫇㫇㫃㫐㩷㩿㫀㫅㫍㪼㫉㫋㪼㫉㩷㪻㫉㫀㫍㪼㪀

㪻㫉㫀㫍㪼㫉

㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㪞㫉㫆㫌㫅㪻

㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㪓㪄㩷㫇㫆㫎㪼㫉㩷㫊㫌㫇㫇㫃㫐㩷㩿㫀㫅㫍㪼㫉㫋㪼㫉㩷㪻㫉㫀㫍㪼㪀

㪫㪜㪪㪫㪪㩷㪧㪦㪠㪥㪫㩷㽳㩷㪭㪺㪺

㪫㪜㪪㪫㪪㩷㪧㪦㪠㪥㪫㩷㽲㩷㪭

㪫㪜㪪㪫㪪㩷㪧㪦㪠㪥㪫㩷㽵㩷㪭

㪫㪜㪪㪫㪪㩷㪧㪦㪠㪥㪫㩷㽴㩷㪭㫊㫇

㪫㪜㪪㪫㪪㩷㪧㪦㪠㪥㪫㩷㽳㩷㪭㪺㪺

㪛㪚

㪝㪞

㪫㪜㪪㪫㪪㩷㪧㪦㪠㪥㪫㩷㽲㩷㪭

㪎㪍㪌㪋㪄㪄㪈

㪚㪥㪝㪈

㪚㪟㪜㪚㪢㩷㪧㪦㪠㪥㪫

㪎㪍㪌㪋㪄㪄㪈

㪚㪥㪝㪉

㪛㪚

㪚㪟㪜㪚㪢㩷㪧㪦㪠㪥㪫

㪧㪚㪌㪈㪈

㪚㪌㪈㪌㪚㪏㪉㪘

㪚㪌㪈㪇

㪧㪚㪌㪈㪉

㪚㪌㪈㪍

㪛㪚㪇㪄㪈㪌㪭㩷㫇㫌㫃㫊㪼㪛㪚㪇㪄㪍㪅㪌㪭㪛㪚㪈㪌㪭

㪊㪄㪈

㪥㪛㪚㪝㪌㪇㪇

㪚

㪚㪟㪜㪚㪢㩷㪧㪦㪠㪥㪫

㪛㪚㪇㪄㪈㪌㪭㩷㫇㫌㫃㫊㪼㪛㪚㪇㪄㪍㪅㪌㪭

㪫㪜㪪㪫㪪㩷㪧㪦㪠㪥㪫㩷㽵㩷㪭㪫㪜㪪㪫㪪㩷㪧㪦㪠㪥㪫㩷㽴㩷㪭㫊㫇

㪫㪜㪪㪫㪪㩷㪧㪦㪠㪥㪫㩷㽳㩷㪭㪺㪺

㪊㪄

㪂

㪈

㪚㪥㪛㪚

㪧㫆㫎㪼㫉㩷㪹㫆㪸㫉㪻

㪫㪜㪪㪫㪪㩷㪧㪦㪠㪥㪫㩷㽵㩷㪭㪫㪜㪪㪫㪪㩷㪧㪦㪠㪥㪫㩷㽴㩷㪭㫊㫇

㪝㪞

㪛㪚㪉㪏㪇㪄㪊㪌㪇㪭

㪝㪞

· The inverter control P.C. board is built in the fan motor of this outdoor unit.

· When F500 that is on controller board is blown, change the fan motor and multi controller board at the same time (F500 is impossisble to changae).

· For outdoor unit, there are 2 fan motors (up and down; MF1/MF2), it is possible to connect to either CNF1 or CNF2 on the board.

· It is abnormal when the abnormlity is detected from either both fan motors or only one side.

Check method of multi controller board

Multi controller board check

Fuse check Check the fuse on Multi controller board

Did the fuse (F500) blow?

Yes (blow)

Replace Multi board and fan motor.

*See DC fan check

Did the fuse (F1 and F2) blow? Check theSV1and21S4andwiring.

Yes (blow)

7seg LED is lit?

No (No lit)

(SW1 : all off)

Yes (lit)

LED1 LED2

Check the voltage from the power board to CNDC(PNK) connector.

280V to 350V DC?

Yes

Normal

*Check wiring *Replace multi controller board

CNDC (PNK)

Multi controller board

*Check the breaker and main incoming power *Check noise filter board *Check wiring

Power circuit board

conv.

circuit

NO LO

208/230V ±10% AC

280-350V DC

CNDC (PNK)

F500

F1 F2

Noise filter circuit board

208/230V ±10% AC

CNAC2(RED)

CNAC (RED)

208/230V ±10% AC

TB1

Check method of power board

Power board check

Is the voltage of main incoming power

208/230V AC ?

Yes

Is the voltage of CNDC(PNK) on multi

board 280-350V DC?

Yes

Is the voltage to the compressor (U-V,U-W and V-W) balanced ?

Yes

Normal

208/230V ±10% AC

*To check the voltage of the parts on this board with a tester is difficult due to its location.

Test points are limited.

*Check the breaker and power supply

*Check wiring *Check power board *Check noise filter board

*Check wiring *Check model setting switch SW4

on the multi controller board.

*Replace power board

Noise filter circuit board

52C

208/230V ±10% AC

P36NHMU P48NHMU

208/230V ±10% AC

TB1

Multi controller board

conv.

circuit

7654321

*See test point

280-350V DC

CNDC (PNK)

CN2 (WHT)

Power board

W V U

U-V 10V-180V AC U-W 10V-180V AC V-W 10V-180V AC

COMP

Circuit diagram

Check method of noise ﬁ lter circuit board

Noise filter circuit board check

Is the voltage of main incoming power

208/230V±10% AC ?

Yes

Is the voltage of CNAC (RED) on multi

board CNAC (RED)

208/230V±10% AC?

Yes

Is the voltage between M1 and M2 on

TB3 (M-NET transmission) 24-30V DC?

Yes

Is the voltage of CNDC(PNK) on multi

board 280-350V DC?

YesYes

Normal

To check the voltage of the parts on this board with a tester is difficult due to its location.

Test points are limited.

Turn off the incoming power supply

and check the resistance of RS1 on

the Noise filter board. *1

RS1=open?

Yes (open)

*Replace Noise filter board and check

52C-relay,wiring,power board and ACTM.

(normal)

*Check the breaker and power supply

*Check wiring *Replace noise filter board

*Check wiring *Check M-NET power board *Check noise filter board

*1 As for P48NHMU are not mounted on noise filter circuit board.

*Check wiring *Check power board,

(1)

, 52C-relay and RS

Power circuit board

CNDC (PNK)

280-350V DC

208/230V ±10% AC

NO LO

conv.

circuit

To multi controller board CNDC(PNK)

Circuit diagram

12V DC from multi

board CNLVB

52C(relay) *1

RS1(resistor) *1

*1 As for P48NHMU are not mounted on noise filter circuit board.

Noise filter circuit board

208/230V ±10% AC 208/230V ±10% AC

CNAC1(WHT)

531

M-NET power board

Multi controller board

(1)

CNAC2(RED)

, 52C-relay and RS

208/230V ±10% AC

TB1

Check method of ACTM

ACTM check

(Active Filter Module)

Is the voltage of main incoming power

208/230V ± -10% AC?

Yes

Is the voltage of CNDC(PNK) on multi

board 330 - 350V DC during cooling or

heating operation?

Yes

Normal

TIME CHART

Power supply

52C relay

COMP (Hz)

Bus bar voltage (DC)

ACTM

OFF

0Hz

OFF

290/325V

power on starts stop

To check the voltage of the parts on this board with a tester is difficult due to its location.

Test points are limited.

Is the voltage between 3pin and

4pin of CN2 on multi controller

board 18V DC?

*Replace multi controller board

ex. 48Hz

330-350V

min Hz

OFF

208/230V

290/325V

*Check the breaker and power supply

Yes

*Check wiring *Check 52C relay *Check ACTM

ACTM

Circuit giagram

Multi controller board

conv. circuit

52C

CN2 (WHT)

7654321

CN2 3-4pin : 18V DC

ACTM gate drive power supply

P48NHMU

(1)

CNDC (PNK)

operate:330-350V DC stop :290-325V DC

DCL

operate:330-350V DC stop :290-325V DC

208/230V ±10% AC

Noise filter circuit board

52C

P36NHMU

P48NHMU

208/230V ±10% AC

Power board

208/230V ±10% AC

TB1

U-V 10V-180V AC U-W 10V-180V AC V-W 10V-180V AC

V U

COMP

Check method of M-NET transmission power board

M-NET transmission power board check

Check the voltage between M1 and M2 on the

transmission terminal block TB3

24-30V DC ?

Yes (24-30V DC )

Normal

To check the voltage of the parts on this board with a tester is difficult due to its location.

Test points are limited.

Is the incoming main voltage 208/230V ±10% AC ?

Yes (208-230V AC )

Disconnect the indoor - outdoor transmission wiring from the terminal block TB3 , and check the voltage

between M1 and M2 on TB3 again.

24-30V DC ?

*Check wiring *Replace M-NET transmission power board

Yes (24-30V DC )

*Check breaker and incoming power supply *Check noise filter board *Check wiring

*Correct the short circuit point on

the M-NET transmission line.

Multi controller board

21 CNS1 (RED)

M1 M2

TB3

24V-30V DC

4321

CN102 (WHT)

24V-30V DC (Non-polar)

To Indoor Unit

M-NET transmission power board

CN2

CN1

Noise filter

208/230V ±10% AC

circuit board

CNAC1(WHT)

208/230V ±10% AC

TB1

9-8. HOW TO CHECK THE COMPONENTS

Low temperature thermistors

• Thermistor <Outdoor pipe> (TH3)

• Thermistor <Low pressure saturated temperature> (TH6)

• Thermistor <Outdoor> (TH7)

Thermistor R0 = 15k' ± 3% B constant = 3480 ± 2%

Vout (V)

4.5

2.5

0.5

2.5 5

363 725

PRESSURE

MPa PSIG

MULTI CONTROLLER BOARD

5V DC

WHT

BLU

Vout

BLK

SENSOR

63HS

- : 5V (DC) - : Output Vout (DC)

MICRO COMPUTER

GND

t =15exp{3480(

273+t – 273

)}

t : :=(°F-32)/1.8

0:[32°F] 15k' 10:[50°F] 9.6k' 20:[68°F] 6.3k' 25:[77°F] 5.2k' 30:[86°F] 4.3k' 40:[104°F] 3.0k'

Medium temperature thermistor

Heatsink temperature thermistor (TH8)

Thermistor R50 = 17k' ± 2% B constant = 4170 ± 3%

t =17exp{4170(

273+t – 323

)}

t : :=(°F-32)/1.8

0:[32°F] 180k' 25:[77°F] 50k' 50:[122°F] 17k' 70:[158°F] 8k' 90:[194°F] 4k'

High temperature thermistor

• Thermistor <Discharge/Compressor> (TH4)

Thermistor R120 = 7.465k' ± 2% B constant = 4057 ± 2%

t =7.465exp{4057(

20:[68°F] 250k' 30:[86°F] 160k' 40:[104°F] 104k' 50:[122°F] 70k' 60:[140°F] 48k'

273+t – 393

)}

70:[158°F] 34k' 80:[176°F] 24k' 90:[194°F] 17.5k' 100:[212°F] 13.0k' 110:[230°F] 9.8k'

t : :=(°F-32)/1.8

Resistance (k)

-20-100 1020304050

-4 -14 32 50 68 86 104 122°F Temperature

200

150

100

Resistance (k)

25 50 75 100 110 125 77 122 167 212 230 257ºF

Temperature

500

400

300

200

Resistance (k)

100

50 75 100 120

122 167 212 248°F

Temperature

9-9. TEST POINT DIAGRAM Outdoor multi controller board PUMY-P36NHMU(-BS) PUMY-P36NHMUR1(-BS)

PUMY-P48NHMU(-BS) PUMY-P48NHMU

1(-BS) PUMY-P48NHMU2(-BS)

PUMY-P48NHMUR3(-BS)

SW8

Demand/ Silent selection

SW1

Display selection (Self diagnosis)

SWU2, SWU1

Address setting

CNLVB

(only P36/P48NHMU2) Connect to the oudoor noise filter circuit board(CN52C) 1–6 : DC12V

63L

Low pressure switch

63H

High presser switch

CN3D

Input of demand control

TH4 Thermistor

TH3 Thermistor

TH7/ 6 Thermistor

63HS

High presser sensor

VFG (TEST POINT4)

(voltage between left pins of PC511 and PC512, pin1 and pin2) : (Same as CNF1,2 7(+)–4(-))

SW2

pump down

SW3

Test run

SW7

Forced defrost

SW4

Model select

CN51

External signal output

CN102

Connect to the M-P.B (Transmission power board)

CN40,CN41

Centralized control power supply/ For storing jumper connector selection

CNS2

Transmission wire of centrallized control

CNS1

Indoor/ outdoor unit connecting wire

CN2

Connect to the outdoor power circuit board 1-5: Power circuit board → Transmitting signal to the multi controller board (0-5V DC) 2-5: Zero cross signal (0-5V DC) 3-4: 18VDC (ACTM power supply) 6-5: 16V DC

(Inverter drive power supply)

7-5: 16V DC

(Inverter drive power supply)

CNAC

Power supply for multi controller board

SV1

Bypass valve

21S4

Four-way valve

VCC (TEST POINT2)

(Voltage between pins of C82A) : DC15V (Same as CNF1,2 5(+)–4(-))

VSP (TEST POINT3)

(voltage between pins of C515 and C516) : DC0V (when stopped) DC1–6.5V (when operated) (Same as CNF1,2 6(+)–4(-))

CNF1, 2

Connect to fan motors

1–4 : DC290V–350V 5–4 : DC15V 6–4 : DC0–6.5V 7–4 : DC15V (when stopped)

DC0–15V pulse (when operated)

VDC (TEST POINT1)

(Voltage between pins of C510) : DC290V–350V (Same as CNF1,2 1(+)–4(-))

CNDC and C510 have the same voltage.

Also possible to check at self check No. 45 SW1 : 10110100

52C

52C relay signal

CNDC

DC290V–350V (1(+)–3(-))

Outdoor power circuit board PUMY-P36NHMU(-BS)

PUMY-P36NHMUR1(-BS) PUMY-P48NHMU(-BS) PUMY-P48NHMU PUMY-P48NHMU

1(-BS) 2(-BS)

PUMY-P48NHMUR3(-BS)

Brief Check of POWER MODULE W Usually, they are in a state of being short-circuited if they are broken. Measure the resistance in the following points (connectors, etc.). If they are short-circuited, it means that they are broken.

1. Check of POWER MODULE

1.Check of DIODE circuit S - P1 , T - P1 , S - N1 , T - N1

2.Check of IGBT circuit P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W

Note:The marks, L , N , N1 , N2 , P1 , P2 , U , V and W shown

in the diagram are not actually printed on the board.

CN2 Connect to the outdoor controller circuit board (CN2) 1-5:Transmitting signal to the outdoor controller circuit board (0~5V DC)

2-5:Zero cross signal (0~5V DC) 3-4:18V DC 6-5:16V DC 7-5:16V DC

CN3 Thermistor (TH8) <Heatsink>

CN5 Detection of primary current Connect to the outdoor noise filter circuit board (CN5)

CNDC 310V DC (1+, 3–) Connect to the outdoor controller circuit board

TABS/T Connect to the outdoor noise filter circuit board Voltage among phases: 208/230V AC

TABN1/SC-N1 Connect to the ACTM(-)

TABP1/SC-P1 Connect to 52C (P48NHMU) Connect to ACTM (+) (P36NHMU, P48NHMU2)

CN4 Connect to the outdoor controller circuit board (CN4)

TABP2/SC-P2 Connect to the ACTM(P)

TABU/V/W Connect to the compressor (MC) Voltage among phases: 10V~180V AC

TABN2/SC-N2 Connect to the ACTM (N2)

Outdoor noise filter circuit board PUMY-P48NHMU PUMY-P48NHMU-BS PUMY-P48NHMU

PUMY-P48NHMU1-BS

LO, NO Voltage of 208-230V AC is output (Connect to the outdoor power circuit board)

TABS

TABT

CNAC2 208/230V AC (Connect to the outdoor controller circuit board (CNAC))

CNAC1 208/230V AC (Connect to the M-NET power circuit board (M-P.B.))

EI Connect to the earth

CN5 Primary current (Connect to the outdoor power circuit board (CN5))

Current transformer (Primary current)

LI, NI Voltage of 208/230V AC is input (Connect to the terminal block (TB1))

Outdoor noise filter circuit board PUMY-P36NHMU(-BS) PUMY-P36NHMUR1(-BS) PUMY-P48NHMU

2(-BS)

PUMY-P48NHMUR3(-BS)

CNAC2 208/230V AC (Connect to the outdoor controller circuit board (CNAC))

52C Relay (Coil resistance 155" (typ))

CN5 52C driving signal (Connect to the outdoor controller circuit board (CNLVB))

RS1 Rush current protect resistor 20" ± 5% / 10W

LO, NO Voltage of 208/230V AC is output (Connect to the outdoor power circuit board)

CNAC1 208/230V AC (Connect to the M-NET power circuit board (M-P.B.))

EI Connect to the earth

E2 Connect to the earth

Current transformer (Primary current)

CN5 Primary current (Connect to the outdoor power circuit board (CN5))

LI, NI Voltage of 208/230V AC is input (Connect to the terminal block (TB1))

Transmission power board PUMY-P36NHMU(-BS) PUMY-P36NHMUR1(-BS)

PUMY-P48NHMU(-BS) PUMY-P48NHMU

1(-BS) PUMY-P48NHMU2(-BS)

PUMY-P48NHMUR3(-BS)

CN2

Connect to the outdoor multi controller board

1-2: 24–30V DC 3-4: 24–30V DC

CN1

Connect to the outdoor noise filter circuit board 1–3 : 208/230V AC

Active filter module PUMY-P48NHMU PUMY-P48NHMU-BS PUMY-P48NHMU

PUMY-P48NHMU1-BS

L1, L2 Connect to the DCL(Reactor)

N1 Non-connect

P Connect to the outdoor power circuit board (TABP2)

–

Connect to the outdoor power circuit board (TABN1)

Connect to the 52C

Connect to the outdoor power circuit board (CNAF)

1 : GND 2-1 : 15V DC 3-1 : Control signal

N2 Connect to the outdoor power circuit board (TABN2)

4, 5 : Not used 6-1 : Control signal

Connection and internal circuit diagram

(+)

(- )

DCL

L1 L2

ACTM

N1 N2

Load

Tester check points of Active ﬁ lter module

Error condition Normal value (reference)

(–) and N1 / N2 / I open less than 1

(–) and L2

P and L2

P and N1 / N2 / I

L2 and N1 / N2 / I

The symptom when the unit is in open error condition is described to determine open error by tester check.

short 100k" ~ 1M

open

short 100k" ~ 1M

open

short 100k" ~ 1M

open

short 100k" ~ 1M

open

The unit does not operate (can not be switched ON)

The breaker operates

The unit does not operate (can not be switched ON)

The breaker operates

The unit does not operate (can not be switched ON)

The breaker operates

The unit does not operate (can not be switched ON)

The breaker operates

The unit does not operate (can not be switched ON)

Symptom when the unit is in trouble

4220 Abnormal stop (9-10. No.189 "ACTM error" display)

I Not used

Active filter module PUMY-P36NHMU(-BS) PUMY-P36NHMUR1(-BS) PUMY-P48NHMU

2(-BS)

PUMY-P48NHMUR3(-BS)

P Connect to the outdoor power circuit board (TABP2)

L1, L2 Connect to the DCL (Reactor)

Upper side

Connect to the outdoor power circuit board (TABP1)

Connect to the outdoor

–

power circuit board (TABN1)

Connection and internal circuit diagram

DCL

L1 L2

Connect to the outdoor power circuit board (CNAF)

1 : GND 2-1 : 15V DC 3-1 : Control signal 4, 5 : Not used 6-1 : Control signal

ACTM

N1 Non-connect

Lower side

N2 Non-connect

lo Connect to the outdoor power circuit board (TABN2)

(+)

(- )

Tester check points of Active ﬁ lter module

Error condition Normal value (reference)

(–) and Io open less than 1

(–) and L2

P and L2

P and Io

L2 and Io

The symptom when the unit is in open error condition is described to determine open error by tester check.

short 100k" ~ 1M

open

short 100k" ~ 1M

open

short 100k" ~ 1M

open

short 100k" ~ 1M

open

The unit does not operate (can not be switched ON)

The breaker operates

The unit does not operate (can not be switched ON)

The breaker operates

The unit does not operate (can not be switched ON)

The breaker operates

The unit does not operate (can not be switched ON)

The breaker operates

The unit does not operate (can not be switched ON)

N1 N2

Load

Symptom when the unit is in trouble

4220 Abnormal stop (9-10. No.189 "ACTM error" display)

9-10. OUTDOOR UNIT FUNCTIONS

101112131415161718192021222324252627282930

SW1 setting

12345678

00000000

10000000

01000000

11000000

00100000

10100000

01100000

11100000

00010000

10010000

01010000

11010000

00110000

10110000

01110000

11110 000

00001000

10001000

01001000

11001000

00101000

10101000

01101000

11101000

00011000

10011000

01011000

11011000

00111000

10111000

01111 000

Relay output display

Check display

Indoor unit check status

Protection input

Abnormality delay display 1

Abnormality delay display 2

Abnormality delay display 3

Abnormality delay history 1

Abnormality delay history 2

Abnormality delay history 3

Abnormality code history 2

Abnormality code history 3

Abnormality code history 4

Abnormality code history 5

Abnormality code history 6

Abnormality code history 7

Abnormality code history 8

Abnormality code history 9

Cumulative time

Outdoor unit operation display

Indoor unit operation mode

Indoor unit operation display

Capacity code (No. 1 indoor unit)

Capacity code (No. 2 indoor unit)

Capacity code (No. 3 indoor unit)

Capacity code (No. 4 indoor unit)

Capacity code (No. 5 indoor unit)

Compressor operation

No.1 unit check

52C

No.2 unit check

SV1

No.4 unit check

Over capacity

No.7 unit check

(SV2)

No.5 unit check

No.6 unit check

TH6 abnormality delay

Lighting always

No.8 unit check

TH8 abnormality

ON: light on OFF: light off

•When abnormality occurs, check display.

Check: light on Normal: light off

Display input microprocessor

protection (abnormality)

Display all abnormalities

remaining in abnormality

delay

Display all abnormalities

remaining in abnormality

delay history

•Display abnormalities up to

present (including abnormality

terminals)

•History record in 1 is the

latest; records become older

in sequence; history record

in 10 is the oldest.

Display of cumulative

compressor operating time

Thermo ON : light on Thermo OFF : light off

•Display of indoor unit

capacity code

•The No. 1 unit will start from

the address with the lowest

number

Notes

Alternating display of addresses

0000-9999 and abnormality code

(including abnormality delay code)

0~9999(unit::1-hour)

0~9999(unit::10-hour)

0~255

Excitation Current

No.1 unit mode

No.1 unit operation

Restart after 3 minutes

No.2 unit mode

No.2 unit operation

Compressor operation

No.3 unit mode

No.3 unit operation

Abnormality(detection)

No.4 unit mode

No.4 unit operation

No.5 unit mode

No.5 unit operation

No.6 unit mode

No.6 unit operation

No.7 unit mode

No.7 unit operation

No.8 unit mode

No.8 unit operation

0000~9999 (Alternating display of addresses and error code)

Display mode

Display on the LED1, 2 (display data)

No.

Delay code

1202

1205

1211

1214

1221

Delay code

1402

1600

1601

4320

4330

4350

Abnormality delay

Discharge/Comp. temperature abnormality

Discharge/Comp. temperature sensor (TH4) abnormality

Outdoor pipe temperature sensor (TH3) abnormality

Radiator panel thermistor (TH8) abnormality

Outside air temperature sensor (TH7) abnormality

Abnormality delay

High-pressure abnormality

Pressure sensor (63HS) abnormality

Over charge refrigerant abnormality

Insufficient refrigerant abnormality

Heatsink temperature abnormality

Power module abnormality

Abnormality in the

number of indoor units

High-pressure

abnormality delay

High-pressure

abnormality delay

High-pressure

abnormality

Address double

setting abnormality

TH4

abnormality

delay

TH4

abnormality delay

Current sensor

abnormality

TH3 abnormality

delay

Saturation temperature of suction pressure

sensor (TH6) abnormality

Frequency converter insufficient

wiring voltage abnormality

Cooling : light on Heating: light blinking

Stop fan: light off

Abnormality code history 10

(the oldest)

Abnormality code history 1

(the latest)

Indoor unit

address error

Outdoor unit

address error

Current sensor

abnormality delay

Current sensor

abnormality delay

Heatsink

overheating

Over current interception

TH4 abnormality

TH3 abnormality

Outdoor fan rotantial

frequency abnormality

TH7 abnormality

Heatsink

overheating delay

Heatsink

overheating delay

SHd(low discharge temperature)

abnormality

SHd(low discharge temperature)

abnormality delay

Over current interception

delay

Over current

interception delay

Discharge/Comp.

temperature abnormality

Indoor unit

capacity error

Discharge/Comp. temperature

abnormality delay

Voltage abnormality

delay

Discharge/Comp. temperature

abnormality delay

Voltage abnormality

delay

Insufficient refigerant

amount abnormality

Insufficient refigerant

amount abnormality delay

Frozen protection delay

Insufficient refigerant

amount abnormality delay

Frozen protection delay

TH3 abnormality

delay

Power module

abnormality delay

Power module

abnormaliy delay

Low-pressure

abnormality

Outdoor fan rotantial fre-

quency abnormality delay

Low-pressure

abnormality delay

TH6 abnormality

delay

Outdoor fan rotantial

frequency abnormality delay

Low-pressure

abnormality delay

63HS abnormality

Current sensor

open/short

TH7 abnormality

delay

63HS abnormality

delay

Current sensor

open/short delay

TH7 abnormality

delay

63HS abnormality

delay

Current sensor

open/short delay

start over current

interception abnormality

serial communication

abormality

start over current inter-

ception abnormality delay

communication(POWER

BOARD)abormality delay

start over current inter-

ception abnormality delay

communication(POWER

BOARD)abormality delay

start over current inter-

ception abnormality delay

SHd(low discharge temperature)

abnormality delay

Voltage abnormality

start over current inter-

ception abnormality delay

SW:setting

0....OFF

1....ON

3132333435

38394041424344

SW1 setting

12345678

11111000

00000100

10000100

01000100

11000100

00100100

10100100

01100100

11100100

00010100

10010100

01010100

11010100

00110100

10110100

01110100

11110100

00001100

IC1 operation mode

IC2 operation mode

IC3 operation mode

IC4 operation mode

IC5 operation mode

OC operation mode

External connection status

Communication demand capacity

Number of compressor ON/OFF

Compressor operating current

Input current of outdoor unit

Thermo ON operating time

Total capacity of thermo on

Number of indoor units

DC bus voltage

State of LEV control

State of compressor

frequency control 1

State of compressor

frequency control 2

•Display of indoor unit

operating mode

Light on/light off

Input: light off No input: light on

Display of communication demand capacity

Notes

0~255

0000~9999 (unit : o10)

0~999.9 (A)

0000~9999 (unit : o10)

0~255

0~255 (Max. 8 unit)

0~999.9 (V)

OFF

Td over heat

prevention

Discharge

pressure

control

Heatsink

over heat pre-

vention control

SHd declease

prevention

Discharge/Comp.

temperature

control

Secondary

current control

Min.Sj

correction

depends on Td

LEV opening

correction

depends on Pd

Discharge

temp.(heating)

Backup

LEV opening

correction

depends on Td

Correction of

high compression

ratio prevention

Freeze

prevention

control

Fan

Cooling

thermo

Cooling

thermo

OFF

Heating

thermo

Heating

thermo

OFF

ON/OFF

Heating/Cooling

Abnormal/Normal

DEFROST/NO

Refrigerant pull back/no

Excitation current/no

P96:Autochange

over fixed mode

CN3N1-2 input

P95:Undefined

CN3S1-2 input

P94:Demand

CN3D1-3 input

P93:Silent

CN3D1-2 input

3-min.delay/no

P97:Autochange

over permission

CN3N1-3 input

Display mode

Display on the LED1, 2 (display data)

No.

10001100

01001100

11001100

Protection input

State of compressor frequency(Hz) control (Words)

Content

Discharge pressure control Hz control by pressure limitation

Discharge/Comp. temperature control

Hz control by discharge temperature limitation

Max.Hz control

Max.Hz limitation when power supply on

Hz control by bypass valve

Abnormal rise of Pd control Control that restrains abnormal rise of discharge pressure

Heatsink over heat prevention control Heatsink over heat prevention control

Secondary current control

Input current contol Input current contol

Hz correction of receipt voltage decrease prevention

Max.Hz correction control due to voltage decrease

Hz restrain of receipt voltage change Max.Hz correction control due to receipt voltage change

The second current value when

microprocessor of POWER

BOARD abnormality is deteced

The radiator panel temperature

when microprocessor of POWER

BOARD abnormality is deteced

0~999.9[Arms]

-99.9~999.9(Short/Open:-99.9 or 999.9)

Frozen protection

TH6 abnormality

Power module

abnormality

Discharge

pressure(heating)

Backup

SV control

Max. Hz

control

Input current

control

Frequency restrain

of receipt voltage

change

Max. Hz

control

646566

697071

727374

757677

818283

858687

888990

919293

949596

SW1 setting

12345678

00000010

10000010

01000010

11000010

10100010

01100010

11100010

00010010

10010010

01010010

11010010

00110010

10110010

01110010

00001010

10001010

01001010

11001010

00101010

10101010

01101010

11101010

00011010

10011010

01011010

11011010

00111010

10111010

01111010

11111010

00000110

Operational frequency

Target frequency

Outdoor fan control step number

EER fan control step number (cooling)

IC1 LEV Opening pulse

IC2 LEV Opening pulse

IC3 LEV Opening pulse

IC4 LEV Opening pulse

IC5 LEV Opening pulse

High-pressure sensor (Pd) kgf/cm

TH4(Td) °C

TH6(ET) °C

TH7(Outdoor-temp.) °C

TH3(Outdoor pipe) °C

TH8(Power module) °C

IC1 TH23(Gas) °C

IC2 TH23(Gas) °C

IC3 TH23(Gas) °C

IC4 TH23(Gas) °C

IC5 TH23(Gas) °C

IC1 TH22(Liquid) °C

IC2 TH22(Liquid) °C

IC3 TH22(Liquid) °C

IC4 TH22 (Liquid) °C

IC5 TH22 (Liquid) °C

IC1 TH21(Intake) °C

IC2 TH21 (Intake) °C

IC3 TH21 (Intake) °C

IC4 TH21 (Intake) °C

IC5 TH21 (Intake) °C

Outdoor SC (cooling) °C

Display of actual operating frequency

Display of target frequency

Display of number of outdoor

fan control steps (target)

Display of opening pulse of

outdoor SLEV and indoor LEV

Display of outdoor subcool

(SC) data and detection data

from high-pressure sensor and

each thermistor

Notes

0~FF(16 progressive)

0~255

0~15

0~2000

Display mode

Display on the LED1, 2 (display data)

-99.9 ~ 999.9

(When the indoor unit is not connected,it is displayed as"0".)

No.

step data

subcool

Notes

Display of target

Display of indoor SC/SH data

678

Display of discharge superheat data

Display of all control target data

Display of detection data from

high-pressure sensor and each

thermistor

Display of actual frequency at time of abnormality delay

Display of fan step number at time of abnormality delay

Display of opening pulse outdoor SLEV

and indoor LEV at time of abnormality

delay

Display on the LED1, 2 (display data)

-2~4

-99.9 ~ 999.9

during heating: subcool (SC)/during cooling: superheat (SH)

-99.9~999.9

Pdm(0.0~30.0)

Display mode

Target subcool step

IC1 SC/SH °C

IC2 SC/SH °C

IC3 SC/SH °C

IC4 SC/SH °C

IC5 SC/SH °C

Discharge superheat (SHd) °C

Target Pd display (heating) kgf/%

12345678

SW1 setting

No.

10000110

01000110

11000110

00100110

100

10100110

101

01100110

102

11100110

103

10010110

105

ETm(-2.0~23.0)

SCm(0.0~20.0)

SCm/SHm(0.0~20.0)

Target ET display (cooling) °C

Target outdoor SC (cooling) °C

Target indoor SC/SH (IC1) °C

Target indoor SC/SH (IC2) °C

01010110

11010110

00110110

10110110

106

107

108

109

Target indoor SC/SH (IC3) °C

01110110

110

Target indoor SC/SH (IC4) °C

11110110

111

Target indoor SC/SH (IC5) °C

TH4 (Td) °F

00001110

10011110

112

121

-99.9~999.9 [°F]

TH3 (Outdoor pipe) °F

TH6 (ET) °F

01011110

11011110

122

123

0.0~711.0 [PSIG]

-99.9~999.9 [°F]

0~FF(16 progressive)

TH7 (Outdoor temp.) °F

High pressure sensor (Pd) PSIG

TH8 (Power module) °F

Actual frequency of abnormality delay

00111110

10111110

01111110

00000001

124

125

126

128

0~15

Fan step number at time of abnormality delay

10000001

129

0~2000

IC1 LEV opening pulse abnormality delay

IC2 LEV opening pulse abnormality delay

IC3 LEV opening pulse abnormality delay

IC4 LEV opening pulse abnormality delay

IC5 LEV opening pulse abnormality delay

11000001

00100001

10100001

01100001

11100001

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

170

171

172

173

174

SW1 setting

12345678

00010001

10010001

01010001

11010001

00110001

10110001

01110001

11110001

00001001

10001001

01001001

11001001

00101001

10101001

01101001

11101001

00011001

10011001

01011001

11011001

00111001

10111001

01111001

11111001

00000101

10000101

01000101

01010101

11010101

00110101

10110101

01110101

High-pressure sensor data at time of abnormality delay

kgf/

TH4 sensor data at time of abnormality delay °C

TH6 sensor data at time of abnormality delay °C

TH3 sensor data at time of abnormality delay °C

TH8 sensor data at time of abnormality delay °C

OC SC (cooling) at time of abnormality delay °C

IC1 SC/SH at time of abnormality delay °C

IC2 SC/SH at time of abnormality delay °C

IC3 SC/SH at time of abnormality delay °C

IC4 SC/SH at time of abnormality delay °C

IC5 SC/SH at time of abnormality delay °C

IC1 TH21 Intake °F

IC2 TH21 Intake °F

IC3 TH21 Intake °F

IC4 TH21 Intake °F

IC5 TH21 Intake °F

IC6 TH21 Intake °F

IC7 TH21 Intake °F

IC8 TH21 Intake °F

IC1 TH23 Gas °F

IC2 TH23 Gas °F

IC3 TH23 Gas °F

IC4 TH23 Gas °F

IC5 TH23 Gas °F

IC6 TH23 Gas °F

IC7 TH23 Gas °F

IC8 TH23 Gas °F

ROM version monitor

ROM type

Check Sum code

IC1 TH22 Liquid °F

IC2 TH22 Liquid °F

234 5 6

Display on the LED1, 2 (display data)

Display of data from high-pressure sensor,

all thermistors, and SC/SH at time of

abnormality delay

Display of detection data from each

indoor thermistor

Display of version data of ROM

Display of ROM type

Display of check sum code of ROM

Display of detection data from each

indoor liquid pipe thermistor

-99.9 ~ 999.9

-99.9 ~ 999.9 [°F]

(When the indoor unit is not connected,it is displayed as"32".)

-99.9 ~ 999.9 [°F]

(When the indoor unit is not connected,it is displayed as"32".)

No.

Display mode Notes

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

192

193

195

196

197

198

199

200

201

202

203

204

206

207

208

209

210

SW1 setting

12345678

11110 101

00001101

10001101

01001101

11001101

00101101

10101101

01101101

11101101

00 011101

10011101

01011101

11011101

00111101

10111101

00000011

10000011

11000011

00100011

10100011

01100011

11100011

00010011

10010011

01010011

11010011

00110011

01110011

11110011

00001011

10001011

01001011

IC3 TH22 Liquid °F

IC4 TH22 Liquid °F

IC5 TH22 Liquid °F

IC6 TH22 Liquid °F

IC7 TH22 Liquid °F

IC8 TH22 Liquid °F

Primary heating control setting temp. a

Primary heating control setting temp. b

Primary heating control setting temp. c

Primary heating control setting temp. d

Primary heating control setting temp. a°F

Primary heating control setting temp. b°F

Primary heating control setting temp. c°F

Primary heating control setting temp. d°F

4220 Error history

Actual frequency at time of abnormality

Fan step number at time of abnormality

IC1 LEV opening pulse at time of abnormality

IC2 LEV opening pulse at time of abnormality

IC3 LEV opening pulse at time of abnormality

IC4 LEV opening pulse at time of abnormality

IC5 LEV opening pulse at time of abnormality

High-pressure sensor data at abnormality kgf/%

TH4 sensor data at time of abnormality °C

TH6 sensor data at time of abnormality °C

TH3 sensor data at time of abnormality °C

TH8 sensor data at time of abnormality °C

IC1 SC/SH at time of abnormality °C

IC2 SC/SH at time of abnormality °C

IC3 SC/SH at time of abnormality °C

IC4 SC/SH at time of abnormality °C

IC5 SC/SH at time of abnormality °C

234 5 6

Display on the LED1, 2 (display data)

Display of detection data from each

indoor liquid pipe thermistor

Except Service Ref. PUMY-P48NHMU(-BS)

Display of actual frequency at time of abnormality

Display of fan step number at time of abnormality

Display of opening pulse of outdoor SLEV

and indoor LEV at time of abnormality

Display of data from high-pressure sensor

and all thermistors at time of abnormality

Display of data from SC/SH and all

thermistors at time of abnormality

-99.9 ~ 999.9 [°F]

(When the indoor unit is not connected,it is displayed as"32".)

-12a<b<c<d40or

a=c and b=d, -12a<d40

Initial value a= -12, b=0, c=10, d=20

10.4°Fa<b<c<d104°For

a=c and b=d, 10.4°Fa<d104°F

Initial value a=10.4°F, b=32°F, c=50.0°F, d=68.0°F

0~FF(16progressive)

0~20

0~2000

-99.9 ~ 999.9

No.

Display mode

Notes

Ex. a=-5, b=5, c=15, d=25

SET :

05 18 00 80 05 00 05 00 15 00 25

MONI : 25 18 00

Primary heating control: SW4-4 ON

HD=05, CM=18 op1=00()/01(°F)

op2,op3=a op4,op5=b op6, op7=c op8,op9=d

ab cd

a=c b=d

—

ACTM

error

——

CT sensor

disconnection

Under

voltage

Over

voltage

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

SW1 setting

12345678

11001011

00101011

10101011

01101011

11101011

00011011

10011011

01011011

11011011

00111011

10111011

01111011

111110 11

00000111

10000111

01000111

11000111

00100111

10100111

01100111

11100111

00010111

10010111

01010111

11010111

00110111

10110111

01110111

11110 111

00001111

10001111

01001111

110 01111

00101111

10101111

01101111

IC6 Capacity code

IC7 Capacity code

IC8 Capacity code

IC6 operation mode

IC7 operation mode

IC8 operation mode

IC6 LEV opening pulse

IC7 LEV opening pulse

IC8 LEV opening pulse

IC6 TH23(Gas) °C

IC7 TH23(Gas) °C

IC8 TH23(Gas) °C

IC6 TH22(Liquid) °C

IC7 TH22(Liquid) °C

IC8 TH22(Liquid) °C

IC6 TH21(Intake) °C

IC7 TH21(Intake) °C

IC8 TH21(Intake) °C

IC6 SC/SH °C

IC7 SC/SH °C

IC8 SC/SH °C

IC6 target SC/SH °C

IC7 target SC/SH °C

IC8 target SC/SH °C

IC6 LEV opening pulse at abnormality delay

IC7 LEV opening pulse at abnormality delay

IC8 LEV opening pulse at abnormality delay

IC6 SC/SH at abnormality delay °C

IC7 SC/SH at abnormality delay °C

IC8 SC/SH at abnormality delay °C

IC6 LEV opening pulse at time of abnormality

IC7 LEV opening pulse at time of abnormality

IC8 LEV opening pulse at time of abnormality

IC6 SC/SH at abnormality °C

IC7 SC/SH at abnormality °C

IC8 SC/SH at abnormality °C

234 5 6

Display on the LED1, 2 (display data)

Display of indoor unit capacity mode

Display of indoor unit operating mode

Display of opening pulse of outdoor

SLEV and indoor LEV

Display of data from high-pressure sensor,

all thermistors, and outdoor SC

Display of indoor SC/SH data

Display of all control target data

Display of opening pulse of indoor LEV

at time of abnormality

Display of SC/ SH data at time of

abnormality

Display of opening pulse of indoor LEV

at time of abnormality

Display of SC/ SH data at time of

abnormality

0~255

OFF Fan

Cooling

thermo

Cooling

thermo

OFF

Heating

thermo

Heating

thermo

OFF

No.

Display mode Notes

0~2000

-99.9 ~ 999.9

(When the indoor unit is not connected,it is displayed as"0".)

-99.9 ~ 999.9

SCm/SHm (0.0~14.0)

-99.9 ~ 999.9

during heating:subcool (SC)/during cooling:superheat (SH)

10 ELECTRICAL WIRING

This chapter provides an introduction to electrical wiring for the CITY MULTI-S series, together with notes concerning power wiring, wiring for control (transmission wires and remote controller wires), and the frequency converter.

10-1. OVERVIEW OF POWER WIRING

(1) Use a separate power supply for the outdoor unit and indoor unit. (2) Bear in mind ambient conditions (ambient temperature, direct sunlight, rain water,etc.) when proceeding with the wiring and connections. (3) The wire size is the minimum value for metal conduit wiring. The power cord size should be 1 rank thicker consideration of voltage drops.

Make sure the power-supply voltage does not drop more than 10 %.

(4) Specific wiring requirements should adhere to the wiring regulations of the region. (5) Power supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord.

For example, use wiring such as YZW.

(6) Install an earth longer than other cables. (7) Use copper supply wires. Use electric wires over the rating voltage 300V.

Warning:

· Be sure to use specified wires to connect so that no external force is imparted to terminal connections. If connections are not fixed firmly,

it may cause heating or fire.

· Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct

current.

Caution:

· Some installation site may require attachment of an earth leakage breaker. If no earth leakage breaker is installed, it may cause an electric

shock.

· Do not use anything other than breaker and fuse with correct capacity. Using fuse and wire or copper wire with too large capacity may cause a

malfunction of unit or fire.

10-2. WIRE DIAMETER AND MAIN POWER SWITCH CAPACITY

10-2-1. Wiring diagram for main power supply

Breaker for Wiring

and Current Leakage Power supply (Single phase 60Hz 208/230V)

Breaker for Wiring

and Current Leakage

Power supply (single phase 60Hz 208/230V)

10-2-2. Power supply wire diameter and capacity

Minimum Wire Thickness

Model

Outdoor Unit

Indoor Unit

P36, P48

~/N (single), 60Hz 208/230V ~/N (single), 60Hz 208/230V

*1. A breaker with at least 3.0 mm contact separation in each poles shall be provided. Use earth leakage breaker (NV). *2. Use copper supply wires. Use the electric wires over the rating voltage 300V.

Power Supply

Main Cable*2

5.3 [AWG10]

Outdoor unit

Indoor unit

(mm2[AWG])

Ground

5.3 [AWG10]

Grounded

Pull box

Grounded

Breaker

for

Wiring*1

30 A 26 A 40 A

Refer to installation manual of indoor unit.

Breaker for Current

Leakage

30 A 30 mA 0.1 sec. or less

Minimum

circuit

ampacity

Maximum rating

of over current

protector device

10-3. DESIGN FOR CONTROL WIRING

Please note that the types and numbers of control wires needed by the CITY MULTI-S series will depend on the remote controllers and whether they are linked with the system.

10-3-1. Selection number of control wires

M-NET remote controller

Remote controller used in system control operations.

Use

Remote controller → indoor unit

• Group operation involving different refrigerant systems.

• Linked operation with upper control system.

Wires connecting → indoor units

2 wires (non-polar)

Wires connecting → indoor units with outdoor unit

wires

Wires connecting → outdoor units

Transmission

10-3-2. Control signal wires

Transmission wires

• Types of transmission cables : Shielding wire CVVS or CPEVS.

• Cable diameter : More than 1.25 E [AWG 16]

• Maximum wiring length : Within 200 m [656 ft]

10-3-3. M-NET Remote controller wiring

Kind of remote control cable Shielding wire MVVS

Cable diameter 0.5 to 1.25 E [AWG 20 to AWG 16]

Remarks

When 10 m is exceeded, use cable with the same

specifications as 10-3-2. Transmission line wiring

10-3-4. MA Remote control cables

Kind of remote control cable 2-core cable (unshielded)

Cable diameter 0.3 to 1.25 E [AWG 22 to AWG 16]

10-4. SYSTEM SWITCH SETTING

In order to identify the destinations of signals to the outdoor units, indoor units, and remote controller of the MULTI-S series, each microprocessor must be assigned an identification number (address). The addresses of outdoor units, indoor units, and remote controller must be set using their settings switches. Please consult the installation manual that comes with each unit for detailed information on setting procedures.

10-5. EXAMPLE EXTERNAL WIRING DIAGRAM FOR A BASIC SYSTEM

10-5-1. Example using a M-NET remote controller

Breaker for Wiring and Current Leakage

Power supply Single phase 2 wire 60Hz 208/230V

15A Breaker for Wiring

and Current Leakage Power supply Single phase 60Hz 208/230V

:1.6mm × 2 [AWG14]

Outdoor unit

1.25mm [AWG16]

:1.6mm × 2 [AWG14]

Pull box

× 2

Indoor unit

0.5~1.25mm [AWG20 ~ AWG16]

Grounded

× 2

Remote controller wire

Group operation

10-6. METHOD FOR OBTAINING ELECTRICAL CHARACTERISTICS WHEN A CAPACITY

AGREEMENT IS TO BE SIGNED WITH AN ELECTRIC POWER COMPANY

The electrical characteristics of connected indoor unit system for air conditioning systems, including the MULTI-S series, will depend on the arrangement of the indoor and outdoor units. First read the data on the selected indoor and outdoor units and then use the following formulas to calculate the electrical characteristics before applying for a capacity agreement with the local electric power company.

10-6-1. Obtaining the electrical characteristics of a CITY MULTI-S series system

(1) Procedure for obtaining total power consumption

Page numbers in this technical manual Power consumption

Total power consumption of each indoor unit

*1 power consumption of outdoor unit Standard capacity table— Refer to 5-2.

Total power consumption of system

*1 Please note that the power consumption of the outdoor unit will vary depending on the total capacity of the selected

indoor units.

(2) Method of obtaining total current

Total current through each indoor unit

*2 current through outdoor unit Standard capacity table— Refer to 5-2.

Total current through system

*2 Please note that the

current through the outdoor unit will vary depending on the total capacity of the selected indoor units.

See the technical manual of each indoor unit

Page numbers in this technical manual Subtotal

See the technical manual of each indoor unit

1+2 <kW>

1+2 <A>

(3) Method of obtaining system power factor

Use the following formula and the total power and current obtained in parts 1 and 2 in the above table to calculate the system power factor.

System power factor =

(Total system power consumption)

(Total system current x voltage)

o 100%

10-6-2. Applying to an electric power company for power and total current

Calculations should be performed separately for heating and cooling employing the same methods; use the largest resulting value in your application to the electric power company.

11 REFRIGERANT PIPING TASKS

11-1. REFRIGERANT PIPING SYSTEM



Line-Branch Method

Connection Examples (Connecting to 4 Indoor Units)

Permissible

Length

Permissible High/

Low Difference

■

Selecting the Refrigerant Branch Kit

■

Select Each Section of Refrigerant Piping

(1) Section From Oudoor Unit to First Branch (A) (2) Sections From Branch to Indoor Unit (a,b,c,d) (3) Section From Branch to Branch (B,C)

Select the size from the right table.

Total Piping Length

Farthest Piping Length

Farthest Piping Length After First Branch

High/Low Difference in Indoor/Outdoor Section

High/Low Difference in Indoor/Indoor Section



A+B+C+a+b+c+d 120m [394ft]

(L)

A+B+C+d  80m [262ft]

(1)

B+C+d  30m [100ft]

(H)

50 meters [164ft] or less (If the outdoor unit is lower, 20 meters [70ft] or less)

(h)

12 meters [39ft] or less

Use an optional branch piping kit (CMY-Y62-G-E). (1) Refrigerant Piping Diameter In Section

From Outdoor Unit to First Branch (Outdoor Unit Piping Diameter)

Model

PUMY-P36,48

(3) Refrigerant Piping Diameter In Section From Branch to Branch

Liquid Line (mm [inch]) Gas Line (mm [inch])

B C



Piping Diameter (mm [inch])

Liquid Line

b c



Gas Line

W9.52 [3/8] W15.88 [5/8]

W15.88 [5/8]W9.52 [3/8]



(2) Refrigerant Piping Diameter In Section From Branch to Indoor Unit (Indoor Unit Piping Diameter)

Model number

18 or lower

24 to 54

Outdoor Unit

First Branch

Indoor unit

Piping Diameter (mm [inch])

Liquid Line

Gas Line

Liquid Line

Gas Line

W6.35 [1/4] W12.7 [1/2] W9.52 [3/8] W15.88 [5/8]

■

Additional refrigerant charge

• Refrigerant of 3kg [6.6 lbs] equivalent to 50m [165 ft] total extended piping length is already included when the outdoor unit is shipped. Thus, if the total extended piping length is 50m [165 ft] or less, there is no need to charge with additional refrigerant.

• If the total extended piping length exceeds 50m [165 ft], calculate the required additional refrigerant charge using the procedure shown on the right.

• If the calculated additional refrigerant charge is a negative amount, do not charge with any refrigerant.

Additional refrigerant charge

<Example> Outdoor model : P48 Indoor 1 : P24 A : W9.52 [3/8"] 10 m [33 ft] a : W9.52 [3/8"] 15m [49 ft] 2 : P15 B : W9.52 [3/8"] 10 m [33 ft] b : W6.35 [1/4"] 10m [33 ft] 3 : P08 C : W9.52 [3/8"] 10 m [33 ft] c : W6.35 [1/4"] 10m [33 ft] 4 : P06 d : W6.35 [1/4"] 20m [66 ft] The total length of each liquid line is as follows;

W9.52 [3/8"] : W6.35 [1/4"] : b + c + d = 10 m +10 m + 20 m = 40 m [33 ft + 33 ft + 66 ft = 132 ft]

<Calculation example> Additional refrigerant charge = 45 m × 0.06 kg + 40 m × 0.024 kg – 3.0 kg = 0.7kg (rounded up) = [148 ft × 0.041 lbs + 132 ft × 0.016 lbs – 6.6 lbs = 1.58 lbs]

A + B + C + a = 10 m + 10 m + 10 m + 15 m = 45 m [33 ft + 33 ft + 33 ft + 49 ft = 148 ft]

(kg)

[lbs]

Liquid pipe size Total length of W9.52

× 0.041 lbs]

[3/8"

(m)

× 0.06 (kg/m),

× 0.041 [lbs/ft]

[ft]

× 0.06 kg

Liquid pipe size Total length of W6.35

× 0.016 lbs]

[1/4"

(m)

× 0.024 (kg/m),

× 0.016 [lbs/ft]

[ft]

× 0.024 kg

Refrigerant amount for outdoor unit

–

At the conditions below:

3.0kg

[6.6 lbs]



Header-Branch Method

Connection Examples (Connecting to 4 Indoor Units)

Permissible

Length

Permissible High/

Low Difference

■

Selecting the Refrigerant Branch Kit

■

Select Each Section of Refrigerant Piping

(1) Section From Outdoor Unit to First Branch (A) (2) Sections From Branch to Indoor Unit (a,b,c,d)

Select the size from the right table.

Total Piping Length

Farthest Piping Length

Farthest Piping Length After First Branch

High/Low Difference in Indoor/Outdoor Section

High/Low Difference in Indoor/Indoor Section

A+a+b+c+d  120m [394 ft]

(L)

A+d  80m [262 ft]

(1)

d is 30 meters[100 ft] or less

(H)

50 meters [164 ft] or less (If the outdoor unit is lower, 20 meters [70 ft] or less)

(h)

12 meters [39 ft] or less

Please select branching kit, which is sold separately, from the table below. (The kit comprises sets for use with liquid pipes and for use with gas pipes.)

(1) Refrigerant Piping Diameter In Section From Outdoor Unit to First Branch (Out door Unit Piping Diameter)

PUMY-P36,48



Branch header (4 branches)

CMY-Y64-G-E

Piping Diameter (mm [inch])Model

Liquid Line

Gas Line



W9.52 [3/8] W15.88 [5/8]



Branch header (8 branches)

CMY-Y68-G-E

(2) Refrigerant Piping Diameter In Section From Branch to Indoor Unit (Indoor Unit Piping Diameter)

Model number

18 or lower

24 to 54

Piping Diameter (mm [inch])

Outdoor Unit

First Branch

Indoor unit

Liquid Line

Gas Line

Liquid Line

Gas Line

W6.35 [1/4] W12.7 [1/2] W9.52 [3/8] W15.88 [5/8]

■

Additional refrigerant charge

• If the total extended piping length exceeds 50m [165 ft], calculate the required additional refrigerant charge using the procedure shown on the right.

• If the calculated additional refrigerant charge is a negative amount, do not charge with any refrigerant.

Additional refrigerant charge

<Example> Outdoor model : P48 Indoor 1 : P24 A : W9.52 [3/8"] 30 m [98ft] a : W9.52 [3/8"] 15m [49ft] 2 : P15 b : W6.35 [1/4"] 10m [33 ft] 3 : P08 c : W6.35 [1/4"] 10m [33 ft] 4 : P06 d : W6.35 [1/4"] 20m [66 ft] The total length of each liquid line is as follows;

W9.52 : A + a = 30 m + 15 m = 45 m [98 ft + 49 ft = 147 ft] W6.35 : b + c + d = 10 m + 10 m + 20 m = 40 m [33 ft + 33 ft + 66 ft = 132 ft]

<Calculation example> Additional refrigerant charge = 45 m = [147 ft × 0.041 lbs + 132 ft × 0.016 lbs – 6.6 lbs = 1.54 lbs]

(kg)

[lbs]

Liquid pipe size Total length of

0.06 kg

W9.52

0.041 lbs]

[3/8"

0.06 (kg/m),

(m)

0.041 [lbs/ft]

[ft]

0.06 kg + 40 m × 0.024 kg – 3.0 kg = 0.7kg (rounded up)

Liquid pipe size Total length of W6.35

[1/4"

0.024 (kg/m),

(m)

0.016 [lbs/ft]

[ft]

0.024 kg

0.016 lbs]

Refrigerant amount for outdoor unit

–

At the conditions below:

[6.6 lbs]

3.0kg

Method of Combined Branching of Lines and Headers

Connection Examples (Connecting to 5 Indoor Units)

Total Piping Length

Permissible

Length

Permissible High/

Low Difference

■

Selecting the Refrigerant Branch Kit

■

Select Each Section of Refrigerant Piping

Farthest Piping Length

Farthest Piping Length After First Branch

High/Low Difference in Indoor/Outdoor Section

High/Low Difference in Indoor/Indoor Section

(1) Section From Outdoor Unit to First Branch (A) (2) Sections From Branch to Indoor Unit (a,b,c,d,e) (3) Section From Branch to Branch (B,C)

Select the size from the right table.

Note: Pipe re-branching after the header branching is not possible.

D D D

Note: The total of downstream unit models in the table is the total of models as seen from point A in the figure above.

d e

A+B+C+a+b+c+d+e is 120 meters [394 ft] or less

(L)

A+B+b is 80 meters [262 ft] or less

(1)

B+b is 30 meters [100 ft] or less

(H)

50 meters [164 ft] or less (If the outdoor unit is lower, 20 meters [70 ft] or less)

(h)

12 meters [39 ft] or less

Please select branching kit, which is sold separately, from the table below. (The kit comprises sets for use with liquid pipes and for use with gas pipes.)

Branch Joint

CMY-Y62-G-E

(1) Refrigerant Piping Diameter In Section From Outdoor Unit to First Branch (Out door Unit Piping Diameter)

Piping Diameter (mm [inch])Model

PUMY-P36, 48

Liquid Line

Gas Line

Branch Header (4 branches)

CMY-Y64-G-E

(2) Refrigerant Piping Diameter In Section From Branch to Indoor Unit (Indoor Unit Piping Diameter)

Model number

W9.52 [3/8] W15.88 [5/8]

18 or lower

Branch Header (8 branches)

Piping Diameter (mm [inch])

24 to 54

(3) Refrigerant Piping Diameter In Section From Branch to Branch

Liquid Line (mm [inch]) Gas Line (mm [inch])

W15.88 [5/8]W9.52 [3/8]

Outdoor unit

First branching (branching

joint) Branching joint

Indoor unit

Branching header

To downstream unit

Blind caps

CMY-Y68-G-E

Liquid Line

Gas Line

Liquid Line

Gas Line

W6.35 [1/4] W12.7 [1/2] W9.52 [3/8] W15.88 [5/8]

■

Additional refrigerant charge

• If the total extended piping length exceeds 50m [165 ft], calculate the required additional

refrigerant charge using the procedure

shown on the right.

• If the calculated additional refrigerant charge is a negative amount, do not charge with any refrigerant.

Additional refrigerant charge

(kg)

[lbs]

Liquid pipe size Total length of W9.52 × 0.06 kg [3/8" × 0.041 lbs]

(m) × 0.06 (kg/m), [ft] × 0.041 [lbs/ft]

Liquid pipe size Total length of W6.35 × 0.024 kg

[1/4" × 0.016 lbs]

(m) × 0.024 (kg/m), [ft] × 0.016 [lbs/ft]

Refrigerant amount for outdoor unit

–

3.0kg

[6.6 lbs]

At the conditions below:

5 : P06 e : W6.35 [1/4"] 10m [33 ft] The total length of each liquid line is as follows; W9.52 :

A + B + C + a = 10 m + 10 m + 10 m + 15 m = 45 m [33 ft + 33 ft + 33 ft + 49 ft = 148 ft]

W6.35 :

b + c + d + e = 10 m + 10 m + 10 m + 10 m = 40 m [33 ft + 33 ft + 33 ft + 33 ft = 132 ft] <Calculation example> Additional refrigerant charge = 45 m × 0.06 kg + 40 m × 0.024 kg – 3.0 kg = 0.7kg (rounded up) = [148 ft × 0.041 lbs + 132 ft × 0.016 lbs – 6.6 lbs = 1.58 lbs]

11-2. PRECAUTIONS AGAINST REFRIGERANT LEAKAGE

The installer and system specialist shall secure safety against leakage according to local regulations or standards. The following standards may be applicable if local regulations are not available.

11-2-1. Introduction

R410A refrigerant of this air conditioner is non-toxic and nonflammable but leaking of large amount from an indoor unit into the room where the unit is installed may be deleterious. To prevent possible injury, the rooms should be large enough to keep the R410A concentration specified by KHK : (a high pressure gas safety association) installation guidelines S0010 as follows.

* Maximum concentration Maximum refrigerant concentration of R410A of a room is

0.30 kg/K accordance with the installation guidelines. To facilitate calculation, the maximum concentration is expressed in units of O/K ( kg of R410A per K)

Maximum concentration of R410A: 0.3O/K[0.019lbs/ft

(KHK installation guidelines S0010)

Outdoor unit

Direction of refrigerant flow

Indoor unit

All refrigerant of this system will leak out to this room if there is leakage at this indoor unit.

]

11-2-2. Confirming procedure of R410A concentration

Follow (1) to (3) to confirm the R410A concentration and take appropriate treatment, if necessary.

(1) Calculate total refrigerant amount by each refrig-

erant system.

Total refrigerant amount is precharged refrigerant amount at ex-factory plus additional charged amount at field installation.

(2) Calculate room volumes (K[ft3]) and find the room

with the smallest volume

The part with represents the room with the smallest volume.

(a) Situation in which there are no partitions

Outdoor unit

Indoor unit

(b) There are partitions, but there are openings that allow

the effective mixing of air.

Outdoor unit

Indoor unit

Opening

Wall

and alarm device, the calculations should be performed for the second smallest room.

Ventilation apparatus

(Situation in which there are no door openings or in which there are openings above and blow doors that occupy at least 0.15% of the floor area)

Outdoor unit

Note: When a single refrigeration system consists of several independent refrigeration circuit, figure out the total refrigerant amount by adding each independent refrigerant circuit.

Indoor unit

The smallest room

The second smallest room

(3) Use the results of calculations (1) and (2) to calculate the refrigerant concentration:

Total refrigerant in the refrigerating unit (O [ maximum concentration The smallest room in which an indoor (O/K unit has been installed (K Maximum concentration of

R410A:0.3O/K

If the calculation results do not exceed the maximum concentration, perform the same calculations for the larger second and third room, etc., until it has been determined that nowhere will the maximum concentration be exceeded.

[ft3])

[lbs

])

[lbs/ft3])

[0.019lbs/ft3]

12 DISASSEMBLY PROCEDURE

OUTDOOR UNIT : PUMY-P36NHMU(-BS) PUMY-P36NHMUR1(-BS) PUMY-P48NHMU(-BS) PUMY-P48NHMU

1(-BS) PUMY-P48NHMU2(-BS) PUMY-P48NHMUR3(-BS)

OPERATING PROCEDURE

1. Removing the service panel and top panel

(1) Remove 3 service panel fixing screws (5 × 12) and slide

the hook on the right downward to remove the service panel.

(2) Remove screws (3 for front, 3 for rear/5 × 12) of the top

panel and remove it.

2. Removing the fan motor (MF1, MF2)

(1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Remove 5 fan grille fixing screws (5 × 12) to detach the

fan grille. (See Figure 1)

(4) Remove a nut (for right handed screw of M6) to detach the

propeller. (See Photo 1.)

(5) Disconnect the connectors, CNF1 and CNF2 on Multi con-

troller board in electrical parts box.

(6) Remove 4 fan motor fixing screws (5 × 25) to detach the

fan motor. (See Photo 2)

Figure 1

Grille fixing screws

Photo 1

Nut

PHOTOS & ILLUSTRATION

Top panel fixing screws

Slide

Front panel

Propeller

Photo 2

Fan motor fixing screws

Top panel

Service panel

Fan grille

Service panel fixing screws

Fan motor

3. Removing the electrical parts box

(1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Disconnect the connecting wire from terminal block. (4) Remove all the following connectors from Multi controller board;

fan motor, thermistor <Outdoor pipe>, thermistor <Discharge/Compressor>, thermistor <Low pressure saturated temp>, thermistor <Outdoor>, high pressure switch, high pressure sensor, low pressure switch, 4-way valve coil and bypass valve coil. Pull out the disconnected wire from the electrical parts box.

• Fan motor (CNF1, CNF2)

• Thermistor <Outdoor pipe> (TH3)

• Thermistor <Discharge/Compressor> (TH4)

• Thermistor <Low pressure saturated temp, Outdoor> (TH6/7)

• High pressure switch (63H)

• High pressure sensor (63HS)

• Low pressure switch (63L)

• Solenoid valve coil <Four-way valve> (21S4)

• Solenoid valve coil <Bypass valve> (SV1) (5) Remove the terminal cover and disconnect the compres-

sor lead wire.

Fan motor fixing screws

Photo 3

Electrical parts box

Multi controller board (MULTI.B)

Terminal block (TB3) (TB7)

Terminal block (TB1)

Valve bed

Compressor (MC)

Terminal cover

Cover panel (Front)

Cover panel fixing screws

Continued to the next page.

From the previous page.

OPERATING PROCEDURE

(6) Remove electrical parts box fixing screw (4 × 10) and

detach the electrical parts box by pulling it upward. The electrical parts box is fixed with 2 hooks on the left and 1 hook on the right.

Removing the thermistor <Low pressure saturated temp.>

(TH6)

(1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Disconnect the connector, TH6 and TH7 (red), on the Multi

controller board in the electrical parts box. (4) Loosen the wire clamps on top of the electrical parts box. (5) Pull out the thermistor <Low pressure saturated temp.>

(TH6) from the sensor holder.

Photo 4

Photo 5

PHOTOS & ILLUSTRATION

Electrical parts box

Electrical parts box fixing screw

In case of replacing thermistor <Low pressure satu-

Note:

rated temp.> (TH6), replace it together with thermistor <Outdoor> (TH7) since they are combined together. Refer to No.5 below to remove thermistor <Outdoor>.

5. Removing the thermistor <Outdoor> (TH7)

(1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Disconnect the connector TH6 and TH7 (red) on the Multi

controller board in the electrical parts box. (4) Loosen the wire clamps on top of the electrical parts box.

(See Photo 4) (5) Pull out the thermistor <Outdoor> (TH7) from the sensor

holder.

Note: In case of replacing thermistor <Outdoor> (TH7),

replace it together with thermistor <Low pressure saturated temp> (TH6), since they are combined together. Refer to No.4 above to remove thermistor <Low pressure saturated temp>.

Photo 6

Electrical parts box

Lead wire of thermistor <Outdoor> (TH7)

PUMY-P36NHMU(R1)/P48NHMU(2),(R3)

Thermistor <TH6>

PUMY-P48NHMU(1)

Sensor holder

Lead wire of thermistor <Outdoor> (TH7)

Sensor holder

OPERATING PROCEDURE

6. Removing the thermistor <Outdoor pipe> (TH3) and thermistor <Discharge/Compressor> (TH4)

(1) Remove the service panel. (See Figure 1) (2) Disconnect the connectors, TH3 (white) and TH4 (white),

on the Multi controller board in the electrical parts box.

(3) Loosen the clamp for the lead wire in the rear of the elec-

trical parts box.

(4) Pull out the thermistor <Outdoor pipe> (TH3) and ther-

mistor <Discharge/Compressor> (TH4) from the sensor holder.

Photo 7

PHOTOS

Thermistor <Outdoor pipe>

(TH3)

7. Removing the 4-way valve coil (21S4)

(1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1)

[Removing the 4-way valve coil]

(3) Remove 4-way valve solenoid coil fixing screw (M4 × 6). (4)

Remove the 4-way valve coil by sliding the coil toward you.

(5) Disconnect the connector 21S4 (green) on the Multi con-

troller board in the electrical parts box.

8. Removing the 4-way valve

(1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Remove 3 valve bed fixing screws (4 × 10) and 4 ball

valve and stop valve fixing screws (5 × 16) and then remove the valve bed.

(4) Remove 5 right side panel fixing screws (5 × 12) in the

rear of the unit and then remove the right side panel. (5) Remove the 4-way valve coil. (See Photo 8) (6) Recover refrigerant. (7) Remove the welded part of 4-way valve.

Note 1: Recover refrigerant without spreading it in the air. Note 2: The welded part can be removed easily by remov-

ing the right side panel.

Note 3: When installing the 4-way valve, cover it with a wet

cloth to prevent it from heating (120 °C [248 °F] or more), then braze the pipes so that the inside of pipes are not oxidized.

Thermistor <Compressor> (TH4)

Photo 8

4-way valve coil fixing screw

Compressor (MC)

4-way valve coil (21S4)

Thermistor <Discharge> (TH4)

4-way valve

Thermistor <Low pressure saturated temp.> (TH6)

OPERATING PROCEDURE

9. Removing bypass valve coil (SV1) and bypass valve

(1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Remove 5 right side panel fixing screws (5 × 12) in the

rear of the unit and remove the right side panel. (4) Remove the bypass valve coil fixing screw (M4 × 6). (5) Remove the bypass valve coil by sliding the coil upward. (6) Disconnect the connector SV1 (white) on the Multi control-

ler circuit board in the electrical parts box. (7) Recover refrigerant. (8) Remove the welded part of bypass valve.

PHOTOS

Photo 9

Note 1: Recover refrigerant without spreading it in the air. Note 2: The welded part can be removed easily by remov-

ing the right side panel.

10. Removing the high pressure switch (63H) and low pressure switch (63L)

(1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Remove the electrical parts box. (See Photo 4) (4) Remove 5 right side panel fixing screws (5 o 12) in the

rear of the unit and remove the right side panel.

(5) Pull out the lead wire of high pressure switch and low

pressure switch. (6) Recover refrigerant. (7) Remove the welded part of high pressure switch and low

pressure switch.

Note 1: Recover refrigerant without spreading it in the air. Note 2: The welded part can be removed easily by removing

the right side panel.

Note 3: When installing the high pressure switch and low

pressure switch, cover them with a wet cloth to prevent them from heating (100 °C [212 °F] or more), then braze the pipes so that the inside of pipes are not oxidized.

High pressure switch (63H)

Bypass valve coil fixing screw

Bypass valve coil (SV1)

Bypass valve

High pressure sensor (63HS)

Photo 10

11. Removing the high pressure sensor (63HS)

(1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Remove the electrical parts box. (See Photo 4) (4) Remove 5 right side panel fixing screws (5 o 12) in the

rear of the unit and remove the right side panel. (5) Pull out the lead wire of high pressure sensor. (6) Recover refrigerant. (7) Remove the welded part of high pressure sensor.

Note 1: Recover refrigerant without spreading it in the air. Note 2: The welded part can be removed easily by removing

the right side panel.

Note 3: When installing the high pressure sensor, cover it

with a wet cloth to prevent it from heating (100 °C [212 °F] or more), then braze the pipes so that the inside of pipes are not oxidized.

High pressure sensor (63HS)

Low pressure switch (63L)

OPERATING PROCEDURE

PHOTOS

12. Removing the compressor (MC)

(1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Remove 2 front cover panel fixing screws (5 × 12) and

remove the front cover panel. (See Photo 3)

(4) Remove 2 back cover panel fixing screws (5 × 12) and

remove the back cover panel. (5) Remove the electrical parts box. (See Photo 3) (6) Remove 3 valve bed fixing screws (4 × 10) and 4 ball valve

and stop valve fixing screws (5 × 16) and then remove the

valve bed. (7) Remove 4 right side panel fixing screws (5 × 12) in the

rear of the unit and then remove the right side panel. (8) Remove 3 separator fixing screws (4 × 10) and remove

the separator. (9) Recover refrigerant.

(10) Remove the 3 points of the motor for compressor fixing nut

using a spanner or a monkey wrench.

(11) Remove the welded pipe of motor for compressor inlet and

outlet and then remove the compressor.

Note: Recover refrigerant without spreading it in the air.

13. Removing the accumulator

(1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Remove 2 front cover panel fixing screws (5 × 12) and

remove the front cover panel. (See Photo 3) (4) Remove 2 back cover panel fixing screws (5 × 12) and

remove the back cover panel. (5) Remove the electrical parts box. (See Photo 3) (6) Remove 3 valve bed fixing screws (4 × 10) and 4 ball valve

and stop valve fixing screws (5 × 16) and then remove the

valve bed. (7) Remove 4 right side panel fixing screws (5 × 12) in the

rear of the unit and then remove the right side panel. (8) Recover refrigerant. (9) Remove 4 welded pipes of power receiver inlet and outlet.

(10)

Remove 2 receiver leg fixing screws (4 × 10). (See Photo 13)

Photo 11

Valve bed

Valve bed fixing screw

Compressor (MC)

Separator

Separator fixing screw

Photo 12

Valve bed fixing screws

Accumulator

Compressor fixing nut

Inlet

Outlet

Accumulator

Note: Recover refrigerant without spreading it in the air.

Photo 13

Accumulator

Accumulator leg

Accumulator leg fixing screws

PARTS LIST

13-1. STRUCTURAL PARTS

PUMY-P48NHMU

PUMY-P48NHMU-BS

PUMY-P48NHMU

PUMY-P48NHMU1-BS

345 6

w Parts of PUMY-P48NHMU are set as the same service parts as PUMY-P48NHMU-BS.

Q,ty/set

No.

Part No.

R01 E04 662

T7W E02 691

T7W E04 667

R01 E18 686

R01 E26 686

R01 E19 130

R01 30L 655

T7W E01 658

R01 E14 658

T7W E00 658

R01 E05 658

T7W E16 661

T7W E06 668

R01 E01 698

R01 E06 641

R01 E00 655

Part Name

SIDE PANEL (L)

FAN GRILLE

FRONT PANEL

BASE ASSY

MOTOR SUPPORT

HANDLE

COVER PANEL (FRONT)

COVER PANEL (REAR)

SIDE PANEL (R)

SERVICE PANEL

REAR GUARD

TOP PANEL

HANDLE

Specification

PUMY-P48

NHMU(-BS)

PUMY-P48

NHMU1(-BS)

Remarks

(Drawing No.)

Including CONDUIT PLATE

Wiring

Diagram

Symbol

Recommended

Q,ty

13-2. FUNCTIONAL PARTS PUMY-P48NHMU PUMY-P48NHMU

PUMY-P48NHMU-BS PUMY-P48NHMU1-BS

14 13

Part numbers that are circled are not shown in the figure.

Part No. Part Name SpecificationNo.

R01 E44 221

R01 E01 115

R01 E02 097

T7W E07 413

T97 410 742

T7W E04 410

T7W E06 411

R01 E03 450

R01 E35 440

T7W E02 490

R01 E22 425

T7W E04 208

R01 25T 209

T7W E03 428

T7W E17 242

T7W E18 242

T7W E05 403

R01 E75 202

T7W E05 208

T7W E29 408

T7W E02 259

T7W 850 716

T7W E14 346

R01 H76 310

T7W E17 716

R01 E01 311

T7W E01 234

T7W E09 259

T7W E26 313

T7W E01 233

T7W E09 254

R01 E66 202

R01 E00 201

R01 E65 202

FAN MOTOR

PROPELLER FAN

NUT

CHARGE PLUG

ANB33FDCMT

COMPRESSOR

Including RUBBER MOUNT

STOP VALVE

BALL VALVE

3/8

5/8

STRAINER

ACCUMULATOR

OIL SEPARATOR

CAPILLARY TUBE

:2.5:0.81000mm [:(3/32) % :(1/32) % L(39-1/2)]inch

H.P SENSOR

LOW PRESSURE SWITCH

BY PASS VALV E

SOLENOID COIL <BYPASS VALVE>

SOLENOID COIL <4-WAY VALVE>

4-WAY VALVE

THERMISTOR

HIGH PRESSURE SWITCH

HEAT EXCHANGER

CONTACTOR

TERMINAL BLOCK

3P (L1,L2,GR)

NOISE FILTER CIRCUIT BOARD

MULTI CONTROLLER CIRCUIT BOARD

TERMINAL BLOCK

3P (M1, M2, S)

TRANSMISSION POWER BOARD

RESISTOR

REACTOR

POWER CIRCUIT BOARD

ACT MODULE

MAIN SMOOTHING CAPACITOR

THERMISTOR (OUTDOOR PIPE)

THERMISTOR (DISCHARGE)

THERMISTOR (HEATSINK)

Q,ty/set

PUMY-P48NHMU(1) PUMY-P48NHMU(1)-BS

Remarks

(Drawing No.)

Wining

Diagram

Symbol

MF1,2

63HS

63L

SV1

21S4

TH6,7

63H

52C

TB1

N.F.

MULTI.B.

TB3, TB7

M-P.B.

DCL

P. B .

ACTM

TH3

TH4

TH8

Recommended

Q,ty

14 RoHS PARTS LIST

14-1. FUNCTIONAL PARTS PUMY-P36NHMU(-BS) PUMY-P36NHMUR1(-BS) PUMY-P48NHMU PUMY-P48NHMUR3(-BS)

2(-BS)

17 16

14 13

11 10

Part numbers that are circled are not shown in the figure.

No.

Part No.

RoHS

T7W E27 763

R01 E08 115

R01 E12 115

R01 E09 097

T7W E07 413

T7W E12 413

FAN MOTOR

PROPELLER FAN

NUT

CHARGE PLUG

Part Name Specification

ANB33FDHMT

T97 415 755

T97 415 779

COMPRESSOR

Including RUBBER MOUNT ANB33FDSMT Including RUBBER MOUNT

T7W E04 410

T7W E06 411

R01 E28 201

R01 E44 440

T7W E02 490

R01 E26 425

R01 E07 208

R01 E00 209

T7W E03 428

T7W E17 242

T7W E18 242

T7W E05 403

R01 H01 202

T7W E07 208

T7W E41 408

R01 V03 310

R01 V14 310

R01 E27 246

R01 E02 311

R01 E04 311

R01 E20 259

T7W E17 259

R01 E64 313

R01 E65 313

R01 E07 233

T7W E45 716

R01 E18 346

R01 E99 202

R01 E22 255

R01 H00 202

R01 E12 201

R01 E06 239

STOP VALVE

BALL VALVE

3/8

5/8

THERMISTOR(COMPRESSOR)

ACCUMULATOR

OIL SEPARATOR

CAPILLARY TUBE

:2.5:0.81000mm [:(3/32) % :(1/32) % L(39-1/2)]inch

H.P SENSOR

LOW PRESSURE SWITCH

BY PASS VALV E

SOLENOID COIL <BYPASS VALVE>

SOLENOID COIL <4-WAY VALVE>

4-WAY VALVE

THERMISTOR

HIGH PRESSURE SWITCH

HEAT EXCHANGER

CONTROLLER CIRCUIT BOARD

TERMINAL BLOCK

3P (M1, M2, S)

M-POWER BOARD

REACTOR

POWER CIRCUIT BOARD

ACT MODULE

TERMINAL BLOCK

3P (L1,L2,GR)

NOISE FILTER CIRCUIT BOARD

THERMISTOR (HEATSINK)

MAIN SMOOTHING CAPACITOR

THERMISTOR (OUTDOOR PIPE)

THERMISTOR (DISCHARGE)

FUSE

250V, 6.3A

Q'ty/set

PUMY-P·(-BS)

36NHMU 48NHMU

36NHMUR1

48NHMUR3

Remarks

(Drawing No.)

Diagram

TB3, TB7

M-NET.P.B.

Wining

Symbol

MF1,2

TH4

63HS

63L

SV1

21S4

TH6,7

63H

C.B.

DCL

P. B .

ACTM

TB1

N.F.

TH8

TH3

TH4

F1, 2

Recommended

Q'ty

14-2. STRUCTURAL PARTS PUMY-P36NHMU(-BS) PUMY-P36NHMUR1(-BS) PUMY-P48NHMU

2(-BS)

PUMY-P48NHMUR3(-BS)

345 6

w Parts of PUMY-P36/48NHMU are set as the same service parts as

PUMY-P36/48NHMU-BS.

No.

Part No.

RoHS

T7W E06 662

T7W E03 691

T7W E06 667

R01 E26 686

R01 E19 130

R01 E01 655

R01 E14 658

R01 E24 658

T7W E01 617

T7W E19 661

T7W E06 668

R01 E07 698

R01 E29 641

R01 E02 655

Part Name

SIDE PANEL (L)

FAN GRILLE

FRONT PANEL

BASE ASSY

MOTOR SUPPORT

HANDLE

COVER PANEL (FRONT)

COVER PANEL (REAR)

CONDUIT PLATE

SIDE PANEL (R)

SERVICE PANEL

REAR GUARD

TOP PANEL

HANDLE

Speci-

fication

PUMY-P36

NHMU(-BS)

Q,ty/set

PUMY-P48

2(-BS)

NHMU

PUMY-P36

NHMUR1(-BS)

PUMY-P48

NHMUR3(-BS)

Remarks

(Drawing No.)

Diagram

Symbol

869

Wiring

Recommended

Q’ty

15 OPTIONAL PARTS

DRAIN SOCKET

Part No. PAC-SG61DS-E

AIR OUTLET GUIDE

Part No. PAC-SG59SG-E

w Need 2 pieces.

AIR GUIDE

Part No. PAC-SH63AG-E

w Need 2 pieces.

DRAIN PAN

Part No. PAC-SG64DP-E

BRANCH PIPE (Joint)

Part No. CMY-Y62-G-E CMY-Y64-G-E CMY-Y68-G-E

NUMBER OF BRANCHING POINTS

2 4

HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN

cCopyright 2006 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Dec. 2010 No. OC366 REVISED EDITION-F Distributed in Sep. 2010 No. OC366 REVISED EDITION-E PDF 5 Distributed in Nov. 2009 No. OC366 REVISED EDITION-D PDF 7 Distributed in Jul. 2008 No. OC366 REVISED EDITION-C PDF 7 Distributed in Dec. 2007 No. OC366 REVISED EDITION-B PDF 9 Distributed in Apr. 2006 No. OC366 REVISED EDITION-A PDF 10 Distributed in Jan. 2006 No. OC366 PDF 10 Made in Japan

New publication, effective Dec. 2010 Specifications subject to change without notice

Mitsubishi Electronics OC366 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual