Mitsubishi PUMY-P60NKMU, PUMY-P60NKMU-BS Service Manual

Download

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

HFC

utilized

R410A

TECHNICAL & SERVICE MANUAL

November 2013

No. OCH502

REVISED EDITION-C

Outdoor unit [Model Name]

PUMY-P60NKMU

PUMY-P60NKMU-BS

[Service Ref.]

PUMY-P60NKMU PUMY-P60NKMU-BS

CONTENTS

1. SAFETY PRECAUTION

2. OVERVIEW OF UNITS

3. SPECIFICATIONS

4. DATA

5. OUTLINES AND DIMENSIONS

6. WIRING DIAGRAM

8. TROUBLESHOOTING

9. ELECTRICAL WIRING

10. REFRIGERANT PIPING TASKS

11. DISASSEMBLY PROCEDURE

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

NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION

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

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

Revision:

• Replaced troubleshooting table with flow chart in

REVISED EDITION-C.

• Some descriptions have been modified.

• Please void OCH502 REVISED EDITION-B.

Note :

• This service manual

describes technical data of outdoor unit. As for indoor units, refer to its service manual.

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

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

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

.....

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

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

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

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

100

103

109

Model name indication

OUTDOOR UNIT

PARTS CATALOG (OCB502)

Use new refrigerant pipes.

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

Avoid using thin pipes.

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.

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.

Flare tool

Electronic refrigerant charging scale

Vacuum pump adaptor

Size adjustment gauge

Gauge manifold

Torque wrench

Gas leak detector

Charge hose

Tools for R410A

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

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

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

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 hazard to refrigerant cycle. In addition, use pipes with specified thickness.

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

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

Use the specified refrigerant only.

Never use any refrigerant other than that specified.

Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of. Correct refrigerant is specified in the manuals and on the spec labels provided with our products. We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by failure to follow the instructions.

1 SAFETY PRECAUTION

OCH502C

CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilizing refrigerant R410A

[1] Cautions for service

OCH502C

(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.)

Unit

Gravimeter

[3] Service tools

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

No.

Gauge manifold · Only for R410A

Charge hose · Only for R410A

Electronic scale

Gas leak detector · Use the detector for R134a, R407C or R410A.

Adaptor for reverse flow check · Attach on vacuum pump.

Refrigerant charge base

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

Refrigerant recovery equipment

Tool name Specifications

· Use the existing fitting

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

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

· Cylinder with syphon

specifications

—

. (UNF1/2)

Cautions for refrigerant piping work

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

6.35

9.52

12.70

15.88

19.05

0.8

1.0

0.8

1.0

Nominal

dimensions(inch)

Diagram below: Piping diameter and thickness

Outside

diameter

(mm)

Thickness

(mm)

R410A R22

Use 1/2H or H pipes.

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

6.35

9.52

12.70

15.88

19.05

9.1

13.2

16.6

19.7

—

9.0

13.0

16.2

19.4

23.3

Nominal

dimensions(inch)

Flare cutting dimensions

Outside

diamer (mm)

Dimension A

( ) (mm)

-0.4

R410A R22

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

6.35

9.52

12.70

15.88

19.05

17.0

22.0

26.0

29.0

—

17.0

22.0

24.0

27.0

36.0

Nominal

dimensions(inch)

Flare nut dimensions

Outside

diameter(mm)

Dimension B(mm)

R410A R22

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

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

Tool exclusive for R410A

Tools for other refrigerants can be used if equipped with adapter 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

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

(Usable if equipped with adapter for rever se flow)

(Usable by adjusting flaring dimension)

Can R407C tools be used?

Ester oil, ether oil: Alkylbenzene oil: minimum amount

(Usable if equipped with adapter for rever se flow)

(Usable by adjusting flaring dimension)

: 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.

OCH502C

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 or below.)

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.

Dimension A

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

Dimension B

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

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

b) Different Indoor unit applications that can be applied:

(2) Outdoor unit DIPSW5-4 for auxiliary heating control:

Set DIPSW5-4 when power is turned off at unit.

OFF:

Disable auxiliary Heating Function (Initial setting)

ON :

Enable auxiliary Heating Function

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

2-1. Auxiliary HEATING ON/OFF CONTROL SET-UP

(3) Determine required indoor fans speed during defrost mode:

0 20k 27k 39k 62K

None Black Blue White Red

Stopped

Setting on

remote

controller

Very Low Low High

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

CN22 input resistance ()

CN22 input (cable color)

Fan speed setting

OFF

Fan airflow rate setting

During defrost operation

Wiring

CN22

a) With no auxiliary heating output the Indoor fan normally goes off to prevent cold drafts during the defrost cycles. b) With auxiliary 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.

OCH502C

OVERVIEW OF UNITS

(4) Determine fan airflow setting during indoor thermo-OFF conditions:

OCH502C

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 5-4 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

-12

-C

[10-F]

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

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

-C

[32-F]

-C

[50-F]

) : 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).

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

) : Outdoor unit in HP mode only.

-C

[68-F]

TH7 = Outdoor temperature

Stage 3

- Outdoor unit OFF (Standby)

- Heater contact ON signal

(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)

Recommended circuit

CN24

Remote control Board Relay circuit

Adapter

Indoor unit

control board

Outdoor unit

control board

Electric Heater

power source

Electric Heater

Red 1

White 2

Dip switch SW5-4 "ON"

Preparations in the field

Maximum cable length is 10 m (32ft)

Red 1

Red 2

YellowGreen

1-phase power supply

208V, 230V/60Hz

Control board

FS1, 2 ----- Thermal fuse

H1, H2 ----- Heater

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

thermostat

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

Wiring diagram

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

to 1.25 mm2 (AWG22 to AWG16)

Do not extend the cable more than 10 meters (32ft).

OCH502C

CN24

88H

FS1

FS2 FS1

FS2

88H

26H

CN22

2-2. UNIT CONSTRUCTION

Model

Ceiling

Ceiling Concealed mounted Wall Mounted

Concealed

4-way flow

1-way flow

built-in

Exposed

Concealed

(Fresh Air)*

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

Capacity

NCMU-E NBMU-E NBMU-E NMAU-E NMHU-E NMSU-E NMU-E NBMU-E NHMU-E

NKMU-E

NKMU-E NEMU-E

NRMU-E E00A

NMHU-E-F

06 08

12 15

18 24 27 30 36 48 54 72

Ceiling Cassette

Ceiling

Vertical

concealed

Suspended

Floor Standing

OCH502C

Outdoor unit

Indoor unit that can be connected

Branching pipe components

Capacity

Number of units

Total system wide capacity

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

Branch header

(2 branches)

P60

Type 06 ~ Type 72

1~ 12 unit

50% ~130% of outdoor unit capacity

Branch header

(4 branches)

Branch header

(8 branches)

Decorative panel

Remote

controller

Name

Model number

Functions

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

M-NET remote controller

• Addresses must be set.

*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 2-2(2).

PAR-F27MEA-US

MA remote controller

PAR-21MAAU-J, PAR-30MAAU-J

• Address setting is not necessary.

2-3. UNIT SPECIFICATIONS

P L F Y - P 30 N B M U - E PU M Y - P 60 N

K M U -BS

PAC ty pe

Frequency conversion controller

Refrigerant R410A/R22 commonness

Refrigerant R410A

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

Indicates equivalent to Cooling capacity

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

Power supply

N: Single phase 208/230V 60Hz

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

Outdoor unit model type

Sub-number

Unit model type

UL model

M-NET control

UL model

Salt proof type

Frequency conversion controller

Outdoor unit

MULTI-S

Cooling

W.B. 15 - 24°C [59 - 75°F]

Heating

D.B. 15 - 27°C [59 - 81°F]

:%í&>í)@

Indoor-side intake air temperature Outdoor-side intake air temperature

'%í&>)@

OCH502C

(1) Method for identifying MULTI-S model

■

Indoor unit < When using Model 30 >

(2) Operating temperature range

■

Outdoor unit <When using model 60 >

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

Ŷ In the case of connecting fresh air type indoor unit

Indoor-side and Outdoor-side intake air temperature

** Thermo-off (FAN-mode) automatically starts if the outdoor temp. is lower than 21:D.B.[70°FD.B.]. ***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

Capacity of Fresh

air type indoor

P30

P54

Cooling

D.B.21 - 43:[70 - 109°F] ** W.B.15.5 - 35:[60 - 95°F]

Heating

'%í - 20:[14 - 68°F] ***

'%í:[23 - 68°F] ***

OCH502C

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 78,000(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 (HoWoD

Weight kg [lb

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] * Chargeless length m [ft] 0 [0]

Guaranteed operation range

)

***

)

***

)

***

)

***

)

Model

Motor output kW 3.0 Capacity control

Starting method Inverter

) o

No. Propeller fan o 2 Fan motor output kW 0.16 + 0.16 Airflow m

)

Charge kg [lb Oil (Model

Compressor protection Fan motor protection Overheating/Voltage protection

Piping diameter

)

Liquid [mm[in] 9.52 [3/8

Gas [mm[in] 19.05 [3/4

Service Ref.

Btu/h/W

W/W

)

dB 58 / 59

/min [CFM] 140 [4,940]

W mm [in

D mm [in H mm [in

L [oz]

m [ft]

(

cool

(

heat

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 [D.B. 47°F / W.B. 43°F]

PUMY-P60NKMU(-BS)

60,000 66,000

4.80

21.5

97.0

6.15

27.6

97.0

12.5

3.14 12

)

40A 42A 25A

ANB66FFZMT

Cooling 38-100 Heating 29-100

)

] ] ]

]

)

í: DB [23 - 115

1,050 [41-5/16]

330+30 [13+1-3/16

1,338 [52+11/16

142 [313]

5.1 [11.2

2.3 [73] (FV50S

Compressor thermo, Over current detection

150 [492]

í::%>í

]

)

]

)

F DB]**

F WB]

*40m [140ft] : In the case of installing outdoor unit lower than indoor unit.

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

indoor unit. ***Electrical data is for only outdoor unit. (In case of connecting 4 indoor units of PKFY-P06NBMU×2 and PKFY-

P24NKMU×2)

Btu/h=kW × 3,412 CFM=K/min × 35.31 lbs=kg/ 0.4536 Note: Above specification data is subject to rounding variation.

OCH502C

DATA

4-1. COOLING AND HEATING CAPACITY AND CHARACTERISTICS

4-1-1. 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 4-2. 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 72

(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-P60NKMU

• Indoor unit PKFY-P08NAMU-E o 2 , PLFY-P18NBMU-E o 3

2 According to the conditions in 1, the total capacity of the indoor unit will be: 8 o 2 + 18 o 3 = 70 3 The following figures are obtained from the 52 total capacity row of the standard capacity table (4-2.):

Capacity (Btu/h)

Cooling Heating Cooling Heating Cooling Heating

62,000

Model 06 Model 08 Model 12 Model 15 Model 18 Model 24 Model 27 Model 30 Model 36 Model 48 Model 54 Model 72

68,000

Outdoor unit power consumption (kW)

4.62 5.91 20.3 26.0

Outdoor unit current (A)/230V

4-1-2. 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 4-1-1. (2) ):

During cooling: During heating:

• The total model capacity of the indoor unit is: 8000 o 2 + 18000 o 3 = 70000Btu/h Therefore, the capacity of PKFY-P08NAMU-E and PLFY-P18NBMU-E will be calculated as follows by using the formula in 4-1-2. (1):

Model 08= 62,000 o = 7,090 Btu/h

Model 18= 62,000 o = 15,940 Btu/h

8000

70000

18000 70000

• The total model capacity of indoor unit is: 9000 o 2 + 20000 o 3 = 78000 Btu/h Therefore, the capacity of PKFY-P08NAMU-E and PLFY-P18NBMU-E will be calculated as follows by using the formula in 4-1-2. (1):

Model 08= 68,000 o = 7,850 Btu/h

Model 18= 68,000 o = 17,440 Btu/h

total model capacity of all indoor units

model capacity

9000 78000 20000 78000

4-2. STANDARD OPERATION DATA (REFERENCE DATA)

OCH502C

Operation

Ambient temperature

Indoor unit

Operating conditions

Piping

Fan speed — Hi Amount of refrigerant kg [lbs-oz] 8.5 [18] Electric current A 21.4 27.4

Outdoor unit

LEV opening Indoor unit Pulse 171 (P06)/426 (P24) 215 (P06)/534 (P24) Pressure High pressure/Low pressure MPa [psi] 2.83/0.94 [411/136] 2.93/0.66 [425/95]

Temp. of each section

Voltage V 230 Compressor frequency Hz 45 56

Outdoor unit

Indoor unit

Indoor Outdoor 35°C/— [95°F/—] 8.3°C/6.1°C [47°F/43°F] No. of connected units No. of units in operation 4 Model — 06×2/24×2 Main pipe Branch pipe 2.5 [8-1/4] Total pipe length 15 [49-1/4]

Discharge Heat exchanger outlet 38 [100] 3 [37] Accumulator inlet 13 [55] 0 [32] Compressor inlet 14 [57] −1 [30] Compressor shell bottom 74 [165] 68 [154] LEV inlet 27 [81] 40 [104] Heat exchanger inlet 10 [50] 61 [142]

DB/WB

Unit

m [ft]

°C [°F]

26.7°C/19.4°C [80°F/67°F] 21.1°C/— [70°F/—]

74 [165] 68 [154]

Outdoor unit model

PUMY-P60NKMU(-BS)

5 [16-3/8]

4-3. STANDARD CAPACITY DIAGRAM

OCH502C

PUMY-P60NKMU PUMY-P60NKMU-BS

Total capacity of indoor units

Capacity

(Btu/h)

Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling Heating 6 6000 7000 0.71 1.06 8.45 1.94 3.1 4.6 3.4 5.1 7 7000 8100 0.82 1.15 8.56 2.06 3.6 5.1 4.0 5.6 8 8000 9200 0.92 1.24 8.67 2.18 4.0 5.4 4.5 6.0 9 9000 10300 1.03 1.32 8.77 2.28 4.5 5.8 5.0 6.4

10 10000 11400 1.13 1.40 8.86 2.38 5.0 6.2 5.5 6.8 11 11000 12500 1.23 1.48 8.95 2.47 5.4 6.5 6.0 7.2 12 12000 13600 1.33 1.56 9.04 2.56 5.8 6.8 6.5 7.6 13 13000 14700 1.43 1.63 9.12 2.64 6.3 7.2 6.9 7.9 14 14000 15800 1.52 1.71 9.20 2.71 6.7 7.5 7.4 8.3 15 15000 16900 1.62 1.78 9.27 2.77 7.1 7.8 7.9 8.7 16 16000 18000 1.71 1.86 9.34 2.83 7.5 8.2 8.3 9.0 17 17000 19100 1.81 1.94 9.40 2.89 7.9 8.5 8.8 9.4 18 18000 20200 1.90 2.02 9.46 2.94 8.3 8.9 9.2 9.8 19 19000 21300 2.00 2.09 9.52 2.98 8.8 9.2 9.7 10.2 20 20000 22400 2.09 2.18 9.58 3.02 9.2 9.6 10.1 10.6 21 21000 23500 2.18 2.26 9.63 3.05 9.6 9.9 10.6 11.0 22 22000 24600 2.27 2.34 9.68 3.08 10.0 10.3 11.0 11.4 23 23000 25700 2.36 2.43 9.73 3.10 10.4 10.7 11.5 11.8 24 24000 26800 2.45 2.51 9.78 3.12 10.8 11.0 11.9 12.2 25 25000 27900 2.54 2.60 9.82 3.14 11.2 11.4 12.3 12.6 26 26000 29000 2.63 2.70 9.87 3.15 11.6 11.8 12.8 13.1 27 27000 30100 2.72 2.79 9.92 3.16 11.9 12.3 13.2 13.5 28 28000 31200 2.81 2.88 9.96 3.17 12.3 12.7 13.6 14.0 29 29000 32300 2.90 2.98 10.01 3.17 12.7 13.1 14.1 14.5 30 30000 33400 2.98 3.08 10.05 3.18 13.1 13.5 14.5 15.0 31 31000 34500 3.07 3.18 10.10 3.18 13.5 14.0 14.9 15.5 32 32000 35600 3.15 3.29 10.14 3.17 13.8 14.4 15.3 16.0 33 33000 36700 3.24 3.39 10.19 3.17 14.2 14.9 15.7 16.5 34 34000 37800 3.32 3.50 10.24 3.16 14.6 15.4 16.1 17.0 35 35000 38900 3.40 3.61 10.29 3.16 14.9 15.9 16.5 17.5 36 36000 40000 3.48 3.72 10.35 3.15 15.3 16.4 16.9 18.1 37 37000 41100 3.56 3.84 10.40 3.14 15.6 16.9 17.3 18.6 38 38000 42200 3.63 3.95 10.46 3.13 15.9 17.4 17.6 19.2 39 39000 43200 3.71 4.06 10.52 3.12 16.3 17.8 18.0 19.7 40 40000 44300 3.78 4.17 10.59 3.11 16.6 18.3 18.4 20.3 41 41000 45400 3.85 4.29 10.65 3.10 16.9 18.8 18.7 20.8 42 42000 46500 3.92 4.41 10.73 3.09 17.2 19.4 19.0 21.4 43 43000 47600 3.98 4.52 10.80 3.08 17.5 19.9 19.3 22.0 44 44000 48700 4.04 4.64 10.88 3.08 17.7 20.4 19.6 22.5 45 45000 49800 4.10 4.75 10.97 3.07 18.0 20.9 19.9 23.1 46 46000 50900 4.16 4.86 11.06 3.07 18.3 21.4 20.2 23.6 47 47000 52000 4.21 4.98 11.15 3.06 18.5 21.8 20.4 24.2 48 48000 53100 4.26 5.08 11.25 3.06 18.7 22.3 20.7 24.7 49 49000 54200 4.31 5.18 11.36 3.06 18.9 22.8 20.9 25.2 50 50000 55300 4.36 5.28 11.48 3.07 19.1 23.2 21.2 25.7 51 51000 56400 4.40 5.38 11.59 3.07 19.3 23.6 21.4 26.1 52 52000 57500 4.44 5.46 11.72 3.08 19.5 24.0 21.6 26.5 53 53000 58600 4.47 5.55 11.86 3.10 19.6 24.4 21.7 26.9 54 54000 59700 4.50 5.62 12.00 3.11 19.8 24.7 21.9 27.3 55 55000 60800 4.53 5.69 12.14 3.13 19.9 25.0 22.0 27.6 56 56000 61900 4.55 5.75 12.30 3.15 20.0 25.2 22.1 27.9 57 57000 63000 4.57 5.80 12.47 3.18 20.1 25.5 22.2 28.2 58 58000 64100 4.59 5.84 12.64 3.21 20.2 25.7 22.3 28.4 59 59000 65200 4.60 5.87 12.82 3.25 20.2 25.8 22.3 28.5 60 60000 66000 4.60 5.95 13.04 3.25 20.2 26.1 22.3 28.9 61 60200 66200 4.61 5.90 13.05 3.29 20.2 25.9 22.4 28.6 62 60400 66400 4.61 5.90 13.09 3.30 20.2 25.9 22.4 28.6 63 60600 66600 4.61 5.90 13.13 3.31 20.2 25.9 22.4 28.7 64 60800 66800 4.62 5.90 13.17 3.31 20.3 25.9 22.4 28.7 65 61000 67000 4.62 5.91 13.21 3.32 20.3 25.9 22.4 28.7 66 61200 67200 4.62 5.91 13.26 3.33 20.3 26.0 22.4 28.7 67 61400 67400 4.62 5.91 13.30 3.34 20.3 26.0 22.4 28.7 68 61600 67600 4.62 5.91 13.34 3.35 20.3 26.0 22.4 28.7 69 61800 67800 4.62 5.91 13.38 3.36 20.3 26.0 22.4 28.7 70 62000 68000 4.62 5.91 13.42 3.37 20.3 26.0 22.4 28.7 71 62200 68200 4.62 5.91 13.47 3.38 20.3 26.0 22.4 28.7 72 62400 68400 4.62 5.91 13.51 3.39 20.3 26.0 22.4 28.7 73 62600 68600 4.62 5.91 13.56 3.40 20.3 26.0 22.4 28.7 74 62800 68800 4.62 5.91 13.60 3.41 20.3 26.0 22.4 28.7 75 63000 69000 4.62 5.91 13.64 3.42 20.3 26.0 22.4 28.7 76 63200 69200 4.62 5.91 13.69 3.43 20.3 26.0 22.4 28.7 77 63400 69400 4.62 5.91 13.74 3.44 20.3 26.0 22.4 28.7 78 63600 69600 4.61 5.91 13.78 3.45 20.2 25.9 22.4 28.7

Power consumption

(kW)

EER / COP

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

4-4. CORRECTING COOLING AND HEATING CAPACITY

OCH502C

4-4-1. 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 capacity and rated input given in “4-2.”.

• The input is the single value on the side of the outdoor unit; the input on the sides 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 coefficient curve

Figure 1 Cooling performance curve

1.4

1.3

1.2

1.1

1.0

0.9

Ratio of cooling capacity

0.8

0.7

0.6

1.4

1.3

1.2

1.1

1.0

0.9

0.8

0.7

0.6

Ratio of power input

-10 0 10 20 30 40 50

14 32 50 68 86 104 122

OUTDOOR

:WB (°FWB)

24 (75.2)

22 (71.6)

20 (68)

18 (64.4)

16 (60.8)

INDOOR

:WB(°FWB)

24 (75.2) 22 (71.6) 20 (68) 18 (64.4) 16 (60.8)

INDOOR

[°CDB]

[°FDB]

Figure 2 Heating performance curve

1.4

1.3

1.2

1.1

1.0

0.9

0.8

0.7

0.6

0.5

0.4

1.4

1.3

1.2

1.1

1.0

0.9

0.8

0.7

0.6

0.5

0.4

Ratio of heating capacity

Ratio of power input

-25 -20 -15 -10 -5 0 1510520

-13 -4 5 14 23 32 595041 68

individual capacity at the rated time

total capacity at the rated time

:DB (°FDB)

15 (59)

21.1 (70)

25 (77)

27.2 (81)

INDOOR

:DB(°FDB)

15 (59)

21.1 (70)

25 (77)

27.2 (81)

INDOOR

[°CWB]

[°FWB]

OUTDOOR

Figure 3 High heating performance curve

OCH502C

1.4

1.3

1.2

1.1

1.0

0.9

0.8

0.7

0.6

0.5

0.4

Ratio of heating capacity

:DB (°FDB)

15 (59)

21.1 (70)

25 (77)

27.2 (81)

INDOOR

1.4

1.3

1.2

1.1

1.0

0.9

0.8

0.7

0.6

0.5

0.4

-25 -20 -15 -10 -5 0 1510520

-13 -4 5 14 23 32 595041 68

OUTDOOR

:DB (°FDB)

15 (59)

21.1 (70)

25 (77)

27.2 (81)

INDOOR

[°CWB]

[°FWB]

4-4-2. Correcting capacity for changes in the length of refrigerant piping

(1) During cooling, obtain the ratio (and the equivalent piping length) of the outdoor units rated capacity and the total in-use

indoor capacity, and find the capacity ratio corresponding to the standard piping length from Figure 3. Then multiply by the cooling capacity from Figure 1 to obtain the actual capacity.

(2) During heating, find the equivalent piping length, and find the capacity ratio corresponding to standard piping length from

Figure 3. Then multiply by the heating capacity from Figure 2 to obtain the actual capacity.

Figure 3 Capacity correction curve

105

Ratio of power input

100

Capacity ratio [%]

0 10203040506070 80 [m] 0 33 66 98 131 164 197 230 263 [ft]

Corrected pipe length

• Method for obtaining the equivalent piping length

Equivalent length for type P60 = (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]

Heating

Cooling

4-4-3. Correction of heating capacity for frost and defrosting

1.5m

[4.9 ft]

1m [3.3 ft]

MICROPHONE

UNIT

GROUND

OCH502C

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

4-5. NOISE CRITERION CURVES

SPL(dB)

PUMY-P60NKMU PUMY-P60NKMU-BS

MODE COOLING HEATING

LINE 58 59

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

APPROXIMATE

THRESHOLD OF HEARING FOR CONTINUOUS NOISE

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCH502C

OUTLINES AND DIMENSIONS

PUMY-P60NKMU PUMY-P60NKMU-BS

2-U Shaped notched holes

(Foundation Bolt M10<W3/8>)

225

<8-27/32>

Rear Air Intake

600<23-5/8>

Installation Feet

225

<8-27/32>

4 PIPING-WIRING DIRECTIONS

Piping and wiring connections

can be made from 4 directions:

FRONT, Right, Rear and Below.

Side Air Intake

56<2-7/32>

40<1-9/16>

417<16-13/32>

330<13>

53<2-3/32>

<1-21/32>

61<2-13/32>

<2-3/4>

25<31/32>

28<1-3/32> 19<3/4>370<14-9/16>

Terminal connection

Left࡮࡮࡮For the power supply

2-12×36 Oval holes

(Foundation Bolt M10<W3/8>)

Air Discharge

Ground for the power supply

("GR"marking position)

1050<41-11/32>

362<14-1/4>

Handle for moving

Side Air IntakeRear Air Intake

Center࡮࡮࡮For the transmission line

Right࡮࡮For concentration control

Ground for the transmission line

Ground for concentration control

( )

Service panel

Handle for moving

632<24-7/8>

Handle for

moving

1338<52-11/16>

Air intake

1079<42-15/32>

Unit : mm <inch>

Rear piping cover

Front piping cover

1ޓ450<17-23/32>

1ޓ393<15-15/32>

26<1-1/32>

369<14-17/32>

86<3-3/8>

81<3-3/16>

<6-1/16>

154

22.5<7/8>

3/4 Conduit

attachment

When installing the conduit.

Set the attachment to the

inner side of each panel.

60<2-3/8>

27.8<1-3/32>

22.2<7/8>

37<1-15/32>Knockout)

24<15/16>Knockout)

Conduit hole

(

Conduit hole

(

60<2-3/8>

Bottom piping hole

(Knockout)

<5-11/32>

136

24.7<31/32>

5<3/16>

100

Scale 1:5

<3-15/16>

1/2 Conduit

attachment

Rear piping hole

(Knockout)

<3-5/8>

33<1-5/16>)

Drain hole

㧔5-

160

<6-5/16>

160

<6-5/16>

160

<6-5/16>

110<4-11/32>

45<1-25/32>

92<3-5/8>

75<2-15/16>

3 FOUNDATION BOLTS

Please secure the unit firmly

with 4 foundation (M10<W3/8>) bolts.

(Bolts and washers must be

purchased locally.)

<5-29/32>

150

Min.

2 SERVICE SPACE

Dimensions of space needed

for service access are

shown in the below diagram.

Min. 10mm<3/8>Min. 10mm<3/8>

FREE

1 FREE SPACE (Around the unit)

The diagram below shows a basic example.

Explantion of particular details are

given in the installation manuals etc.

FOUNDATION

30<1-3/16>

Max.

<19-11/16>

500

Min.

10<3/8>

Min.

500

<19-11/16>

Service space

Min. 1000mm<39-3/8> Min. 150mm<5-29/32>

1717

Handle for

moving

Example of Notes

ޓޓ࡮࡮࡮Refrigerant GAS pipe connection (FLARE):19.05㧔3/4F)

ޓޓ࡮࡮࡮Refrigerant LIQUID pipe connection (FLARE): 9.52㧔3/8F㧕

+㧝࡮࡮࡮Indication of STOP VALVE connection location.

55<2-3/16>27<1-1/16>

55<2-3/16>

53<2-3/32> 60<2-3/8>

55<2-3/16>

60<2-3/8>

Piping Knockout Hole Details

5<3/16>

60<2-3/8>

Rear trunking hole

(Knockout)

5<3/16>

24<15/16>Knockout)

37<1-15/32>Knockout)

Conduit hole

(

Conduit hole

(

Right piping hole

(Knockout)

:24<15/16>Knockout)

Conduit hole

(

37<1-15/32>Knockout)

Conduit hole

(

Front trunking hole

(Knockout)

<3/16>

<2-3/8>

73<2-7/8>

27<1-1/16>

<3-5/8>

26<1-1/32>

73<2-7/8> 60<2-3/8>

Right trunking hole

(Knockout)

29<1-5/32>

55<2-3/16>

92<3-5/8>

26<1-1/32>

27<1-1/16> 55<2-3/16>

75<2-15/16>

92<3-5/8>

Front piping hole

(Knockout)

26<1-1/32>

OCH502C

WIRING DIAGRAM

PUMY-P60NKMU PUMY-P60NKMU-BS

MULTI.B.

MF1

MF2

52C

(

BLK

31313

TB3

RED

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

TB7

YLW

FOR CENTRALIZED CONTROL DC 30V(Non-polar)

POWER SUPPLY

AC208/230V 60Hz

X505

CN4

(WHT)

CN3N (BLU)

CNS1 (RED)

BLK

LEV-A LEV-B

CNLVB

CNLVA

(RED)

(WHT)

CN51 (WHT)

CNS2

CN41

(YLW)

(WHT)

1214 1441

CN52C

(RED)

3117

52C

E I

N I L I

BLK

* MODEL SELECT 1:ON 0:OFF

PUMY-P60NKMU(-BS)

The black square ( ) indicates a switch position.

SWU2 SWU1

CN40

(WHT)

M-P.B.

MODEL

SW5

SW4

LED1

CN102

(WHT)

CN2

(WHT)

CN1

(WHT)

P. B .

BLK

(RED)

CNAC2

BLK

(WHT)

CNAC1

1234561 011000020

SW6

SW2?SW8SW1

SW7SW3

LED2

41 TP1

(BLK)

135

SW4 SW8

63HS63LS

TH7 TH6 TH3 TH4 TH2

t° t° t° t° t°

CNF1 (WHT)

CNF2 (WHT)

CNDC (PNK)

X504

21S4

)

(

GRN

)

(

21S4

WHT

RED

TB1

RED

BLU

GRN/YLW

141

3121212

63HS

TH7/6

TH3

(

SV1

WHT

SV1

(WHT)

WHT

CN4

X502

)

RED

WHT

(RED)

63H (YLW) 1

X501

(

WHT

)

131

TH8

t°

SV2 BLU

X503

)

(WHT)

63LS

(BLU)

TRANS

(

WVU

BLK

63H

CN3D

CN3S

(WHT) TH2 BLK

)

CNAC (RED

WHT

DCL

(RED)

131313

CN52C

(RED)

LED3

)

CNDC (PNK)

IGBT

WHT

TH4

)

(

WHT

)

(

CN2

(WHT)

CN2

(WHT)

DCL2 DCL1

SYMBOL NAME SYMBOL NAME SYMBOL NAME

TB1 Terminal Block <Power Supply TB3 Terminal Block <Comunication Line TB7 Terminal Block < MC Motor For Compressor MF1,MF2 Fan Motor 21S4 Solenoid Valve <Four-Way Valve 63H High Pressure Switch

High Pressure Sensor

63HS 63LS Low Pressure Sensor SV1 Solenoid Valve <Bypass Valve TH2

Thermistor <HIC Pipe

TH3

Thermistor <Outdoor Pipe TH4 Thermistor <Compressor TH6 Thermistor <Low Pressure Saturated TH7

Thermistor <Outdoor

Thermistor <Heat Sink

TH8

Electronic Expansion Valve

LEV-A,LEV-B

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: 230 V). 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.

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

Compressor

Indication

operated

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

Centralized Control Line

52C321S44SV15(SV2)

Reactor

DCL

CB Main Smoothing Capacitor

P.B. Power Circuit Board

Connection Terminal <U/V/W-Phase

TABU/V/W TABLI/NI

Connection Terminal <L/N-Phase Connection Terminal <DC Voltage

TABP2

Connection Terminal <DC Voltage

TABN2

Connection Terminal <Reactor

DCL1,DCL2

Power Module

IGBT

Connection Terminal <Ground

EI,E2,E3,E4

MULTI.B.

Controller Circuit Board

SW1

Switch <Display Selection

SW2

Switch <Function Selection SW3 SW4 SW5 SW6

Switch <Test Run

Switch <Model Selection

Switch <Function Selection

SW7 SW8 SWU1

SWU2 SS

CN3D

CN3S

CN3N CN51

LED1,LED2

> >

LED3 F1,F2 X501

M-P.B.

TP1

505

678

Always lit

Switch <Function Selection Switch <Model Selection Switch <Unit Address Selection, 1st digit Switch <Unit Address Selection, 2nd digit> 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 Microcomputer> Fuse <T6. 3AL250V Relay M-NET Power Circuit Board ConnectionTerminal <Ground>

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

12345678

> > > > >

051

056

001

010

101

002

102 104 154

1111

009

008

003

007

006

004

005

 A transmission wire must be

connected to each refrigerant

system (outdoor and indoor).

 Set addresses:

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

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

Remote controller .....101-200

 PUMY has no 100ths digit switch.

The address automatically become

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

Remote

controller

Remote

controller

Remote

controller

Remote

controller

105

Remote

controller

157

Remote

controller

107

Remote

controller

For centralized

management

For remote

controller

Address SW Address SW Address SW Address SW Address SW

Piping

Outdoor unit

Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit

Indoor unitIndoor unitIndoor unitIndoor unitIndoor unit

Address SW Address SW Address SW Address SW Address SW

Address SWAddress SWAddress SWAddress SWAddress SW

Address SWAddress SW

For centralized

management

For remote

controller

Transmission wire





OCH502C

NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION

7-1. TRANSMISSION SYSTEM SETUP

7-2. REFRIGERANT SYSTEM DIAGRAM

Refrigerant Gas pipe <3/4>

Refrigerant

Liquid pipe

<3/8>

Accumulator

Thermistor (TH6) (Saturation temperature of suction pressure)

Solenoid valve (SV1)

Check valve (High pressure)

Check valve (Low pressure)

High pressure sensor (63HS)

High pressure switch (63H)

Low pressure sensor (63LS)

Thermistor (TH7) (Outdoor temperature)

(Pipe temperature)

Thermistor (TH4)

Thermistor (TH3)

Oil separator

Service port

4-way valve

Strainer

Capillary tube

Strainer

Ball valve

Stop valve

Distributor

Strainer Strainer

Compressor

Strainer

Refrigerant piping specifications <dimensions of flared connector>

Capillary tube for oil separator : :2.5 % :0.8 % L800 Capillary tube for solenoid valve : :4.0 % :3.0 % L500

Capacity

Item

Liquid piping

Gas piping

P06, P08, P12, P15, P18

P24, P30, P36, P48, P54

P60

Indoor unit

Outdoor unit

:6.35 <1/4>

:9.52 <3/8>

:12.7 <1/2>

:15.88 <5/8>

:19.05 <3/4>

P72 :9.52 <3/8> :19.05 <3/4>

Thermistor (TH2) (HIC)

(

Compressor

)

HIC

LEV-B

LEV-A

OCH502C

PUMY-P60NKMU PUMY-P60NKMU-BS

Unit: mm <inch>

7-3. SYSTEM CONTROL

TB5

TB15

101

(Main)

151

TB3

TB7

TB5

TB15

(Sub)

102

(Main)

152

(Sub)

M1M2

AB AB AB AB

TB5

TB15

101

M1 M2

TB3

TB7

TB5

TB15

102

M1 M2

OCH502C

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 1 single outdoor unit and multiple outdoor units for M-NET remote control

system. Use 1 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 Wiring Method and Address Setting

1. Standard operation

• 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

• Using 2 remote controllers for each indoor unit.

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

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.

b. Connect terminals M1 and M2 on transmission cable

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

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

as shown below.

Unit

Indoor unit (IC)

Outdoor unit

(OC)

Remote

controller (RC)

Range

001 to 050

051 to 100

101 to 150

Setting Method

— Use the smallest address of all the indoor unit plus 50. Indoor unit address plus

100.

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

shown below.

Unit

Indoor Unit (IC)

Outdoor unit

(OC)

Main Remote

Controller (RC)

Sub Remote

Controller (RC)

Range

001 to 050

051 to 100

101 to 150

151 to 200

Setting Method

— Use the smallest address of all the indoor units plus 50. Indoor unit address plus

100. Indoor unit address plus

150.

3. Group operation

101

TB5

M1 M2

TB3

TB7

M1 M2

• Multiple indoor units operated

Combinations of 1 through 3 above are possible.

together by 1 remote controller

IC(Main)

TB15

TB5

M1 M2

IC(Sub)

TB15

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

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.

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

as shown below.

Unit

IC (Main)

IC (Sub)

Outdoor Unit

Main Remote

Controller

Sub Remote

Controller

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) from among the units within 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

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

most functions as the IC (Main) unit.

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

OCH502C

Name Symbol Maximum units for connection

Outdoor unit OC —

Indoor unit IC 1 OC unit can be connected to 1-12 IC units

M-NET remote

controller

Maximum 2 RC for 1 indoor unit, Maximum 12 RC for 1 OC

Permissible Lengths Prohibited items

Longest transmission cable length (1.25 mm² [AWG16]) L1 + L2, L2 + L3, L3 + L1 [ 200m [656ft] Remote controller cable length

If 0.5 to 1.25 mm² [AWG20 to AWG16]

R1, R2 [10m [33ft]

2. If the length exceeds 10 meters [33ft], the exceeding section should be 1.25 mm² [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

M1 M2

TB3

M1M2

M1 M2

TB7

M1M2

TB7

TB5

M1M2

TB5

M1 M2

101

TB15

TB5

M1M2

TB5

M1 M2

TB15

• Use the indoor unit (IC)

TB15

address plus 150 as the sub remote controller address. In this case, it should be 152.

• 3 or more remote con-

101

(Main)

AB AB ABAB

151

(Sub)

102

(Main)

103

(Sub)

104

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

Same as above

TB3

M1 M2

TB7

M1 M2

IC(Main)

TB5

TB15

M1 M2

TB5

M1 M2

IC(Sub)

TB15

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

102

100. In this case, it should be 101.

B. Example of a group operation system with 2 or more outdoor units and a M-NET remote controller.











TB7

TB3

(51)

TB5

(01)

TB5

(03)

TB5

(02)

TB5

(04)

TB5

(05)

TB5

(07)

TB5

(06)

(101)

(105)

(104)

(155)

TB7

(53)

Power Supply

Unit

System controller

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

M1M2

M1 M2

ABABAB

M1 M2

M1M2

TB3

M1M2

M1 M2

OCH502C

(Address settings are necessary.)

Examples of Transmission Cable WiringWiring Method Address Settings

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 termi-

nal 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

Outdoor Unit 51 to 100

Main Remote Controller 101 to 150

Sub Remote Controller 151 to 200

MA Remote Controller —

h. The group setting operations among the multiple indoor units are done by the remote controller (RC) after the electri-

cal power has been turned on.

Use the smallest address within the same group of indoor units. Use an address, other than 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)

• Name, Symbol, and the Maximum Units for Connection

OCH502C

• Longest length via outdoor units : L1+L2+L3+L4, L1+L2+L3+L5, L1+L2+L6+L7 [ 500 meters [1450 ft] (1.25 mm² [AWG16])

• Longest transmission cable length : L

• Remote controller cable length : R

1, L3+L4, L3+L5, L6, L2+L6, L7 [ 200 meters [656 ft] (1.25 mm² [AWG16])

1,R2, R2+R3, R4 [ 10 meters [33 ft] (0.5 to 1.25 mm² [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.

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

Prohibited items

(51)

TB7TB3

M1 M2



(53)

TB7

TB3

M1 M2

Unit

M1M2

System controller

M1M2

Power Supply

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

( ): Address



TB5

M1 M2

TB5

M1 M2

(104)

(02)

(04)

TB5

M1 M2

(105)

TB5

M1 M2

(05)

(07)

(01)

TB5

M1 M2

AB AB AB

(101)

(03)

TB5

M1 M2



(155)





(06)

TB5

M1 M2

• 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 wring together

C. Example of a MA remote controller system (address setting is not necessary.)

OCH502C

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

1 L2

TB3

TB7

M1 M2SM1 M2

TB5

M1 M2

TB15

TB5

M1 M2

TB15

a. Use feed wiring to connect terminals M1 and M2

on 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 non-polarized 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 two remote controllers

TB5

TB3

TB7

M1 M2SM1 M2

• Using 2 remote controllers

for each indoor unit.

M1 M2

TB15

3. Group operation

TB3

TB7

M1 M2SM1 M2

TB5

TB15

M1 M2SM1 M2

MAMA

TB5

TB15

M1 M2

MA MA MA

AB AB

TB5

M1 M2

TB15

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

terminal block (TB15) of each indoor unit, which is doing group operation with the terminal block the MA remote controller. Use non-polarized 2 wire.

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

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

• Multiple indoor units operated together by 1 remote controller

Combinations of 1 through 3 above are possible.

Permissible Lengths Prohibited items

OCH502C

Longest transmission cable length L

1 + L2 [ 200 m [656 ft] (1.25 mm²

[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

M1 M2

TB7

M1 M2

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

TB5

TB15

M1 M2

TB5

M1 M2

TB15

ABAB

MAMARC

3 MA remote controller or more cannot be connected 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

M1 M2

TB3

M1 M2

TB7

M1 M2

TB7

M1 M2

TB5

TB15

M1 M2

AB AB AB AB AB

TB5

TB15

M1 M2

MA 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.

IC00

TB5

TB15

M1 M2

TB5

M1 M2

TB15

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

OCH502C

(Address settings are necessary.)

Examples of Transmission Cable Wiring

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

( ): Address

(51)

TB7

TB3

M1 M2SM1 M2



(53)

TB7

TB3

M1 M2

M1M2

Power Supply

Unit

M1M2

System controller

M1M2

(05)

TB15

AB AB

MAMAMA

(07)

TB15



(06)

TB5

TB15

M1M2





(01)

TB15 TB15

M1 M2

(03)

TB15

M1 M2

TB5

(02)

TB5TB5

M1 M2

M1M2

TB5

(04)

TB5

M1 M2

TB15

TB5

M1 M2



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 termi-

nal 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 —

*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 are done by the remote controller (RC) after the electri-

cal power has been turned on.

• Name, Symbol, and the Maximum Units for Connection

OCH502C

Longest length via outdoor unit (M-NET cable):

1+L2+L3+L4

and L1+L2+L6+L7 [ 500 m [1640 ft] (1.25 e [AWG16] or more)

Longest transmission cable length (M-NET cable):

and L3+L4 and L6 and L2+L6 and L7 [ 200 m

Remote controller cable length:

Permissible LengthProhibited items

and m1+m2+m3 and m1+m2+m3+m4

[ 200 m

[656 ft]

(1.25 e

[AWG16]

(0.3 to 1.25 e

or more)

[AWG22 to AWG16]

)

(51)

TB7TB3

M1M2



(53)

TB7

TB3

M1M2

Unit

M1 M2

System controller

M1 M2

M1M2

Power Supply

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

( ): Address



(01)

TB5 TB15 TB15

M1 M2

(03)

TB15

TB5

M1 M2

TB5

M1 M2

TB5

M1 M2

(02)

(04)



(05)

TB15TB5

M1 M2

TB5

M1 M2

AB AB

MAMAMA

(07)

TB15 TB15



(06)

TB15TB5

M1 M2



• 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 wring together.

8 TROUBLESHOOTING

ON/OFF

TEST RUN

°C

1Hr.

FILTER

CHECK TEST

TEMP.

TIMER SET

Check code indicator (see NOTE 1) Test run remaining time indicator (see NOTE 3)

Display panel

(M-NET Remote controller)

ON/OFF button 

ON/OFF LED (Lights up in operation)

LOUVER button 

TEST RUN button 

AIR DIRECTION button 

FAN SPEED button 

TEST RUN indicator

Indoor unit liquid pipe temperature indicator (see NOTE 4)

(Cooling/Heating) OPERATION SWITCH button ,

Control panel

OCH502C

8-1. CHECK POINTS FOR TEST RUN

8-1-1. Procedures of test run

(1) Before a test run, make sure that the 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 M". Do not proceed inspection if the resistance is under 1.0 M". 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 “ 8-1-2. 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 the 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 the 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 “8-1-3. Countermeasures for Error During Test Run”. As for DIP switch setting of outdoor unit, refer to “8-5. INTERNAL SWITCH FUNCTION TABLE”.

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 blows 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.

Notes: 1. If error code appears on remote controller or remote controller malfunctions, refer to “ 8-1-3. Countermeasures for Error During Run”.

3. During test run, the indoor liquid pipe temperature is displayed on remote controller instead of room temperature.

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

Depending on a model, “This function is not available” appears when air direction button is pressed. However, this is not malfunction

Operation procedure

2929

8-1-2. Special Function Operation and Settings (for M-NET Remote Controller)

(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).

OCH502C

• 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 2 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 button 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.

Figure 4. (B) Making paired settings

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

Figure 5. Completing normal entry

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

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

OCH502C

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 1 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

Figure 7. Display when an abnormality has

occurred during clearing

"--" 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

(alternating display)

"--" will appear in the unit type display location when an address has been cleared normally.

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

8-1-3. Countermeasures for Error During Test Run

12345678

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

Bit

Indication

Compressor operated

52C321S44SV15(SV2)

—

—8Always lit

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.

OCH502C

• If a problem 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. Note that this document describes flow charts for solving trouble/error(s) which is detected in outdoor unit only.

Check

code

0403 Serial communication error

1102 Compressor temperature 1300 Low pressure 1302 High pressure Check delay code 1402 1500 Superheat due to low discharge temperature

Insufﬁ cient refrigerant trouble Check delay code 1601

1501

Blocked valve in cooling mode 1508 4-way valve trouble in heating mode Check delay code 1608 2500 Water leakage 2502 Drain pump trouble 2503 Drain sensor trouble (THd) 4100 Compressor current interruption( locked compressor) Check delay code 4350 4210 Compressor over current interruption

Voltage shortage/overvoltage/PAM error/T-open phase/power syncronization 4220

signal error 4230 Heatsink temperature 4250 Power module 4400 Rotational frequency of outdoor fan motor Check delay code 4500

Air inlet sensor trouble (TH21) or 5101

Compressor temperature thermistor (TH4) open/short

Liquid pipe temp.sensor trouble (TH22) or 5102

Low pressure saturated temp.thermistor (TH6) open/short 5103 Gas pipe temperature sensor trouble (TH23) 5105 Piping temperature thermistor (TH3) open/short Check delay code 1205 5106 Piping temperature thermistor (TH7) open/short 5109 HIC piping temperature thermistor (TH2) open/short Check delay code 1222 5110 Heatsink temperature sensor thermistor (TH8) open/short Check delay code 1214 5201 High pressure sensor (63HS) 5202 Low pressure sensor (63LS) Check delay code 1400 5300 Primary current Check delay code 4310 5701 Contact failure of drain ﬂ owt switch 6600 Duplex address error Only M-NET Remote controller is detected. 6602 Transmission processor hardware error Only M-NET Remote controller is detected. 6603 Transmission bus BUSY error 6606 Signal comminication error with transmission processor Only M-NET Remote controller is detected. 6607 No ACK error 6608 No responce frame error Only M-NET Remote controller is detected. * 6831 MA communication receive signal error (no receive signal)

MA commnication send signal error (starting bit derection error)

6832 6833 MA commnication send error (H/W error) Only MA Remote controller is detected. 6834 MA commnication receive error (Synchronous recovery error) Only MA Remote controller is detected. 7100 Total capacity error 7101 Capacity code error 7102 Connecting excessive number of units

Address setting error

7105

Remote controller sensor trouble

7111

Trouble

Note:

When the outdoor unit detects No ACK error/No response error, an object indoor unit is treated as a stop, and not assumed to be abnormal.

Detected Unit

Indoor Outdoor

Remote

Controller

Outdoor unit Multi controller board ~ Power board communiation trouble

Check delay code 1202

Check delay code 1600

Check delay code 1501

Check delay code 4320

Check delay code 4330 Check delay code 4350

Check delay code 1202

Check delay code 1211

Check delay code 1221

Check delay code 1402

Only M-NET Remote controller is detected.

Only M-NET Remote controller is detected. *

Only MA Remote controller is detected. Only MA Remote controller is detected.

Remarks

Check code

OCH502C

0403

Serial commucication error

Abnormal points and detection methods Causes and check points

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

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Check the connection of the communication line (CN2 and CN4) between the outdoor controller board and power board.

Are they connected normally?

Wire breakage or contact failure of connector CN2 or

CN4

Malfunction of power board communication circuit on

outdoor controller board

Malfunction of communication circuit on outdoor

power board

Connect the CN2 and CN4 properly. Replace them in case of a breakage.

Yes

The communication circuit of either the outdoor controller board or power board is defective. If unable to identify the defective circuit;

Replace the outdoor controller board if it

doesn't recover,

Replace the outdoor power board

3333

Check code

OCH502C

1102

Compressor temperature trouble

Abnormal points and detection methods Causes and check points

(1) Abnormal if TH4 falls into following temperature conditions;

●exceeds 110

●exceeds 125 [257 °F]

(2) Abnormal if a pressure detected by the high-pressure sensor and

converted to saturation temperature exceeds 40 defrosting, and TH4 exceeds 110 [230 °F].

TH4: Compressor temperature thermistor LEV: Linear expansion valve

[230 °F]continuously for 5 minutes

[104 °F]during

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Is 5101 displayed when restart?

Yes

(5101)

Malfunction of stop valve

Over-heated compressor operation caused by

shortage of refrigerant

Defective thermistor

Defective outdoor controller board

LEV performance failure

Defective indoor controller board

Clogged refrigerant system caused by foreign

object

Refrigerant shortage while in heating operation

(Refrigerant liquid accumulation in compressor while indoor unit is OFF/thermostatic control OFF.)

Refer to the diagnosis of check code 5101.

Chart 1 of 2

(1102)

Is the outdoor stop valve fully open?

Yes

Is there a refrigerant leak?

(no leak)

Check the connection for thermistor wiring and indoor controller board connector

Is there any abnormality on

connectors/wires such as a disconnection,

half-disconnection or breakage?

Yes

Open the stop valve fully.

Repair the refrigerant leakage.

Connect the connector properly (Repair or replace it in case of a breakage).

Continue to the next page

Check code

OCH502C

1102

Compressor temperature trouble

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Continued from the previous page

Disconnect the thermistor wiring to check the resistance.

Is there a resistance detected?

Yes

Replace the thermistor.

Chart 2 of 2

Check the voltage and appearance of the outdoor controller board.

Is the voltage normal value?

Is it free from any trace of over-

heating or burning?

Yes

Disconnect the indoor LEV wiring and check the resistance.

Is there a resistamce detected?

Yes

Replace the outdoor controller board.

Replace the indoor LEV.

Replace the indoor controller board.

Check code

OCH502C

1300

Low pressure trouble

Abnormal points and detection methods Causes and check points

<63L equipped model (63LS non-equipped)> (1) Low pressure (63L is in operation)

Abnormal if 63L operates (under-0.03MPa) during compressor operation.

<63LS equipped model (63L non-equipped)> (2) Low pressure (63LS is in operation)

Abnormal if 63LS operates (under-0.03MPa) during compressor operation.

63L : Low pressure switch 63LS : Low pressure sensor LEV : Linear expansion valve SV1 : Solenoid valve TH7 : Outdoor temperature thermistor

Chart 1 of 3

Defective operation of stop valve (not fully open)

Clogged or broken pipe.

Malfunction or locked outdoor fan motor

Short-cycle of outdoor unit

Dirt of outdoor heat exchanger

Remote controller transmitting error caused by noise interference

Contact failure of outdoor controller board connector

Defective outdoor controller board

Short-cycle of indoor unit

Decreased airﬂ ow, clogged ﬁ lter, or dirt on indoor unit.

Malfunction or locked indoor fan motor.

Decreased airﬂ ow caused by defective inspection

of outdoor temperature thermistor (It detects lower temperature than actual temperature.)

Indoor LEV performance failure

Malfunction of fan driving circuit

SV1 performance failure

Defective low-pressure sensor

Malfunction of low-pressure sensor input circuit on

outdoor conrtoller board

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Is the outdoor stop valve (ball valve) fully open ?

Yes

Does the the outdoor fan rotare while the operation?

Yes

Does the indoor fan rotate while the operation?

Yes

Is the indoor unit short-cycled?

(no short-cycle)

Yes

(short-cycled)

Open the stop valve (ball balve) fully.

Check the outdoor fan motor Refer to "How to check the parts" on outdoor unit servive manual.

Check the indoor fan motor Refer to "How to check the parts" on indoor unit servive manual.

Solve the short-cycle.

Is the indoor unit ﬁ lter clogged?

Continue to the next page

(no clog)

Yes

(ﬁ lter clogged)

Clean the ﬁ lter.

Check code

OCH502C

1300

Low pressure trouble

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Continued from the previous page

Is there dirt on the indoor heat exchanger?

(no dirt)

Is the outdoor unit short-cycled?

(no short-cycle)

Is there dirt on the outdoor heat exchanger?

(no dirt)

Are pipes clogged or broken?

Yes

(dirty)

Yes

(short-cycled)

Yes

(dirty)

Yes

Wash the indoor heat exchanger.

Solve the short-cycle.

Wash the outdoor heat exchanger.

Chart 2 of 3

Defective pipes.

Disconnect the outdoor temperature thermistor wiring and check the resistance.

Is there a resistance detected?

Yes

Disconnect the indoor LEV wiring to check the resistance.

Is there a resistance detected?

Yes

Check the voltage and appearance of the outdoor controller board.

Is the voltage normal? Is it free from any trace of overheating or burning?

Yes

Replace the TH7.

Replace the indoor LEV

Replace the indoor controller board.

Continue to the next page

Check code

OCH502C

1300

Low pressure trouble

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Continued from the previous page

Check the resistance of SV1.

Is there a resistance detected?

Yes

<63L equipped model (63LS non-equipped)>

Is the connector for outdoor controller board 63L disconnected or loose?

Yes

Replace the SV1.

Reconnect the connector or connect it tightly.

Chart 3 of 3

<63LS equipped model (63L non-equipped)>

Check the 63LS voltage.

Is there a voltage detected?

Yes

Replace the outdoor controller board

Replace the 63LS.

Replace the outdoor controller board.

Check code

OCH502C

1302

High pressure trouble

Abnormal points and detection methods Causes and check points

<63H equipped model (63HS non-equipped)> (1) High pressure abnormality (63H operation)

Abnormal if 63H operates(*) during compressor operation. (* 4.15MPa)

<63HS equipped model (63H non-equipped)> (2) High pressure abnormality (63HS detected)

Abnormal if a pressure detected by 63HS exceeds 4.15MPa during compressor operation.

63H : Higi-pressure switch 63HS : Higi-pressure sensor LEV : Linear expansion valve SV1 : Solenoid valve TH7 : Outdoor temperature thermistor

Chart 1 of 4

Defective operation of stop valve (not fully open)

Clogged or broken pipe.

Malfunction or locked outdoor fan motor

Short-cycle of outdoor unit

Dirt of outdoor heat exchanger

Remote controller transmitting error caused by noise interference

Contact failure of the outdoor controller board connector

Defective outdoor controller board

Short-cycle of indoor unit

Decreased airﬂ ow, clogged ﬁ lter, or dirt on indoor unit.

Malfunction or locked indoor fan motor.

Decreased airﬂ ow caused by defective inspection

of outdoor temperature thermistor (It detects lower temperature than actual temperature.)

Indoor LEV performance failure

Malfunction of fan driving circuit

SV1 performance failure

Defective high-pressure sensor

Defective high-pressure sensor input circuit on

outdoor controller board

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Is 5201 displayed when restart?

(1302)

Is the outdoor stop valve (ball valve) fully open ?

Yes

Does the outdoor fan rotate while the operation?

Yes

Does the indoor fan rotate while the operation?

Yes

(5201)

Refer to the diagnosis of check code 5201.

Open the stop valve (ball balve) fully.

Check the outdoor fan motor Refer to "How to check the parts" on the outdoor unit servive manual.

Check the indoor fan motor Refer to "How to check the parts" on the indoor unit servive manual.

Is the indoor unit short-cycled?

Continue to the next page

(no short-cycle)

Yes

(short-cycled)

Solve the short-cycle.

Check code

OCH502C

1302

High pressure trouble

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Continued from the previous page

Is the indoor unit ﬁ lter clogged? Clean the ﬁ lter.

(No clog)

Is there dirt on the indoor heat exchanger?

(no dirt)

Yes

(Clogged ﬁ lter)

Yes

(dirty)

Wash the indoor heat exchanger.

Chart 2 of 4

Is the outdoor unit short-cycled?

(no short-cycle)

Is there dirt on the outdoor heat exchanger?

(no dirt)

Are the pipes clogged or broken?

Disconnect the TH7 wiring and check the resistance.

Yes

(short-cycled)

Yes

(dirty)

Yes

Solve the short cycle.

Wash the outdoor heat exchanger.

Defective pipes.

Continue to the next page

Check code

OCH502C

1302

High pressure trouble

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Continued from the previous page

Is there a resistance detected?

Yes

Disconnect the indoor LEV wiring to check the resistance.

Replace the TH7.

Chart 3 of 4

Is there a resistace detected?

Yes

Check the voltage and appearance of the indoor controller board.

Is the voltage normal? Is it free from any trace of overheating or burning?

Yes

Check the resistance of SV1.

Replace the indoor LEV.

Replace the indoor controller board.

Continue to the next page

Check code

OCH502C

1302

High pressure trouble

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Continued from the previous page

Is there a resistance detected?

Yes

<63H equipped model (63HS non-equipped)>

Is the connector for outdoor controller board 63H disconnected or loose?

Yes

Reconnect the connector or connect it tightly.

Replace the outdoor controller board

Chart 4 of 4

Replace the SV1.

<63HS equipped model (63H non-equipped)>

Check the 63HS voltage.

Is there a voltage detected?

Yes

Replace the 63HS.

Replace the outdoor controller board.

Check code

OCH502C

1500

Superheat due to low discharge temperature trouble

Abnormal points and detection methods Causes and check points

Abnormal if the discharge superheat is continuously detected less than or equal to −15 [5 °F]* for 5 minutes even though the indoor LEV has minimum open pulse after the compressor starts operating for 10 minutes.

LEV : Linear expansion valve TH4 : Compressor temperature thermistor 63HS : High-pressure sensor

*At this temperature, conditions for the abnormality detection will not be satisﬁ ed if no abnormality is detected on either TH4 or 63HS.

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Is the TH4 wiring disconnected?

Yes

(disconnected)

Disconnection or loose connection of TH4

Defective holder of TH4

Disconnection of LEV coil

Disconnection of LEV connector

LEV performance failure

Connect the wiring properly.

Chart 1 of 2

(connected properly)

Check the resistance of TH4

Is the resistance normal ?

Yes

Check the connector contact and wiring of the indoor LEV.

Is there any abnormality such as a half-disconnection or breakage?

Disconnect the indoor LEV wiring to check the resistance.

0 ···700k" 10 ···410k 20

···250k" 30 ···160k

···104k

Yes

Replace the

Connect the connector properly, or replace the LEV.

TH4.

Continue to the next page

Check code

OCH502C

1500

Superheat due to low discharge temperature trouble

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Continued from the previous page

Is there a resistance detected?

Yes

Check the voltage and appearance of the indoor controller board.

Replace the indoor LEV.

Chart 2 of 2

Is the voltage normal ? Is it free from any trace of overheating or burning?

Yes

Check the 63HS voltage.

Is there a voltage detected?

Yes

Replace the indoor controller board.

Replace the 63HS.

Replace the outdoor controller board.

Check code

OCH502C

1501

Refrigerant shortage trouble

Abnormal points and detection methods Causes and check points

(1) Abnormal when all of the following conditions are satisﬁ ed:

1. The compressor is operating in HEAT mode

2.Discharge super heat is 80 [176 °F] or more.

3.Difference between TH7 and the TH3 applies to the formula of (TH7-TH3 <5 )

4.The 63HS detects below 2.04MPa.

(2) Abnormal when all of the following conditions are satisﬁ ed:

1.The compressor is in operation

2.When cooling, discharge superheat is 80 [176 °F] or more When heating, discharge superheat is 90 [194 °F] or more.

The High-pressure sensor detects below 2.32 MPa

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Is the outdoor stop valve (ball valve) fully open ?

Defective operation of stop valve (not fully open)

Defective thermistor

Defective outdoor contoroller board

Indoor LEV performance failure

Gas leakage or shortage

Defective 63HS

TH3 : Piping temperature thermistor TH7 : Outdoor temperature thermistor LEV : Linear expansion valve 63HS : High-pressure sensor

Open the stop valve (ball balve) fully.

Chart 1 of 2

Yes

Is there a refrigerant leak?

(no leaking)

Is 5104 displayed when restart?

(1501)

Check relevant thiemistor wirings and connector contacts of the controller boards.

Is there any abnormality on connectors such as a disconnection, half-disconnection or breakage?

Yes

(leaking)

Yes

(5104)

Yes

Repair the refrigerant leak.

Refer to the diagnosis of check code 5104.

Connect the connector properly. (Repair or replace it in case of a breakage.)

Disconnect the thermistor wiring and check the resistance.

Continue to the next page

Check code

OCH502C

1501

Refrigerant shortage trouble

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Continued from the previous page

Is there a resistance detected? Replace the thermistor.

Yes

Check the 63HS voltage.

Chart 2 of 2

Is there a voltage detected?

Yes

Check the voltage and appearance of the outdoor controller board.

Yes

Is the voltage normal value?

Is it free from any trace of over-

heating or burning?

Yes

Disconnect the indoor LEV wiring and check the resistance.

Replace the 63HS.

Replace the outdoor controller board.

Is there a resistance detected?

Yes

Replace the indoor LEV.

Replace the indoor controller board.

Check code

OCH502C

1501

Blocked valve in cooling mode

Abnormal points and detection methods Causes and check points

Abnormal if stop valve is blocked during cooling operation.

Abnormal when both of the follwing temperature condition is satisﬁ ed for 20 minutes or more during coling condition.

1. TH22j − TH21j ] −2 °C [28.4 °F]

2. TH23j − TH21j ] −2 °C[28.4 °F]

Note: For indoor unit, the abnormality is detected if an operating unit satisﬁ es the condition.

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Is the

outdoor liquid/gas valve

open?

fully

Outdoor liquid/gas valve is blocked.

Mulfunction of outdoor LEV (LEV1)(blockage)

TH21: Indoor intake temperature thermistor TH22: Indoor liquid pipe tmperature thermistor TH23: Indoor gas pipe tmperature thermistor LEV: Linear expansion valve

Open the

outdoor liquid/gas valve fully

Yes

Disconnect the outdoor LEV wiring to

check the resistance.

Is there a resistance detected?

Yes

Replace the outdoor LEV.

Replace the outdoor controller board.

Check code

OCH502C

1508

4-way valve trouble in heating mode

Abnormal points and detection methods Causes and check points

Abnormal if 4-way valve does not operate during heating operation.

Abnormal when any of the following temperature condition is satisﬁ ed for 3 min. or more during heating operation

1. TH22j − TH21j ] −10 °C [14 °F]

2. TH23j − TH21j ] −10 °C [14 °F]

3. TH22j [ 3 : [37 °F]

4. TH23j [ 3 : [37 °F]

Note: For indoor unit, the abnormality is detected if an operating unit satisﬁ es the condition.

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

the connector for outdoor

controller board or 4-way valve coil

disconnected or loose?

Yes

4-way valve failue

Disconnection or failure of 4-way valve coil

Clogged drain pipe

Disconnection or loose connection of connectors

Malfunction of input circuit on outdoor controller board

Defective outdoor power board

TH21: Indoor intake temperature thermistor TH22: Indoor liquid pipe tmperature thermistor TH23: Indoor gas pipe tmperature thermistor

Reconnect the connector or connect it

tightly..

Disconnect the connector for outdoor controller board or 4-way valve coil to

check the resistance..

Is there a resistance detected?

Yes

Check the voltage and appearance of the

outdoor controller board.

Is the detected voltage normal?

Is it free from any trace of over-heating

or burning?

Replace the 4-way valve.

Replace the outdoor controller board.

Check code

OCH502C

4100

Compressor current interruption (Locked compressor)

Abnormal points and detection methods Causes and check points

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

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Check the stop valve.

Closed stop valve

Decrease of power supply voltage

Looseness, disconnection or converse of compressor

wiring connection

Model selection error upon replacement of indoor

controller board

Defective compressor

Defective outdoor power board

Chart 1 of 2

Is the stop valve fully open?

Yes

Check the power supply voltage.

Is the power supply voltage normal?

Yes

Turn the power OFF to check for looseness, disconnection or phases of the compressor wiring.

Is it connected properly?

Yes

Open the stop valve.

Ensure power supply from the facility.

Connect the wiring properly, then turn the power back ON.

Check whether the model selection switch is set correctly on the controller board or not.

Continue to the next page

Check code

OCH502C

4100

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Check whether the compressor is faulty grounded or not.

Compressor current interruption (Locked compressor)

Diagnosis Remedy

Continued from the previous page

Are they set properly?

Yes

Set the model selection switch correctly, then restart.

Chart 2 of 2

Is the compressor faulty grounded?

Yes

Replace the compressor (Defective compressor).

Replace the outdoor power board (Defective outdoor power board).

Check code

OCH502C

4210

Compressor overcurrent interruption

Abnormal points and detection methods Causes and check points

Abnormal if overcurrent of DC or the compressor is detected within 30 seconds after the compressor starts operating.

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Check the outdoor stop valve

Closed outdoor stop valve

Decrease of power supply voltage

Looseness, disconnection or reverse phase of

compressor wiring connection

Malfunction of indoor/outdoor fan

Short-cycle of indoor/outdoor unit

Model selection error upon replacement of outdoor

controller board

Malfunction of input circuit on outdoor controller

board

Defective compressor

Defective outdoor power board

Chart 1 of 2

Is the stop valve fully open?

Yes

Check whether the power supply voltage is normal or not

Is the power supply voltage normal?

Yes

Check whether the model selection switch is set correctly on the controller board or not.

Are they set properly?

Yes

Turn the power OFF to check for looseness, disconnection or converse phases of the compressor

wiring

Open the stop valve fully

Check the power supply facility (check for power supply open phase)

Set the model selection correctly

Continue to the next page

Check code

OCH502C

4210

Compressor overcurrent interruption

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Continued from the previous page

Connect the compressor wiring (U, V and

Are they connected properly?

Yes

Check the operation of indoor/outdoor fan motors.

Does it operate normally?

Yes

W phase) properly, then turn the power back ON.

Check the DC fan motor.

Chart 2 of 2

Check for indoor/outdoor short-cycle.

Are those units short-cycled?

(no short-cycled)

Disconnect the compressor wiring from the outdoor power board, then check the voltage among each phases U, V and W during test run (SW7-1 ON).

Are the voltage among the phases U-V, V-W and W-U different?

Yes

Replace the outdoor controller board.

Yes

(short-cycled)

Make sure to perform a voltage check with the same performing frequencies.

Remove factor(s) causing the short-cycle.

Replace the compressor.

Does it operate normally?

Yes

Replace the outdoor power board.

Complete.

Check code

The sub codes are displayed by an operation of SW1 on the outdoor controller board.

3: PAM error 6: Input sensor trouble 7: Shortage voltage trouble 8: Overvoltage trouble

OCH502C

Voltage shortage/Overvoltage/PAM error/T open-phase/

4220

Abnormal points and detection methods Causes and check points

Power synchronization signal error

Chart 1 of 2

Abnormal if any of following symptoms are detected;

●Decrease of DC bus voltage to 200V

●Increase of DC bus voltage to 400V

●Decrease of primary current

(The detection is active only when the operational frequency is 40Hz or more, or the compressor current is 5A or more.)

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Is there any abnormality on wirings?

7,8

Which sub code is displayed?

Yes

The sub codes are

displayed by an operation

of SW1 on the outdoor

controller board.

SW1 Setting

ON OFF

12345678

Decrease/increase of power supply voltage, or T

open-phase

Disconnection of compressor wiring

Malfunction of 52C

Disconnection or contact failure of CN52C

Defective outdoor power board

Malfunction of 52C driving circuit on outdoor

controller board

Disconnection of CN5

Disconnection of CN2

Malfunction of primary current detecting circuit on

outdoor power board

The black square (■) indicates a switch position.

a. T open-phase b. Disconnection of compressor wiring c. Disconnection of CN52C d. Disconnection of CN5 e. Disconnection of CN2

Display on LED1,2

2 3 4 5 6 7 8

3: PAM error

3: PAM error 6: Input sensor trouble

6: Input sensor trouble 7: Shortage voltage trouble

7: Shortage voltage trouble 8: Overvoltage trouble

8: Overvoltage trouble

Does a DC bus voltage raise to approx. 350V at PAM driving?

Is there any abnormality on PAM wirings?

Is there any abnormality at the PAM circuit on the outdoor power board?

Is there any abnormality at the PAM power supply circuit on the controller board?

Continue to the next page

Yes

Check the power supply facility.

Correct the wiring.

Replace the outdoor power board (Defective outdoor power board).

Replace the outdoor controller board. Breakage of wiring for PAM controlling power supply, and such.

PAM error.

Check code

OCH502C

Voltage shortage/Overvoltage/PAM error/T open-phase/

4220

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Continued from the previous page

Power synchronization signal error

Chart 2 of 2

The black square (■) indicates a switch position.

Is CN5 connected properly without any contact failure?

Yes

Is there any breakage of CT1 on the noise ﬁ lter board?

Check the bus voltage read by the microprocessor with an operation of SW1 on the outdoor controller board.

Is the power supply normal?

Yes

Replace the outdoor power board (Defective outdoor power board).

The bus voltage can be displayed by an operation of SW1 on the outdoor controller board.

SW1 Setting

ON OFF

12345678

Display on LED1,2

0 999.9 V

Decrease of power supply voltage. T open-phase.

Correct the CN5 wiring.

Malfunction of noise ﬁ lter CT1.

Unit

Check the bus voltage at the both ends of R80 on the outdoor power board using a tester.

Is the bus voltage normal?

Yes

The difference on the voltage between the one read by the microprocessor and

the one at the both ends of R80 is large.

Yes

Replace the outdoor power board (Defective outdoor power board).

Replace the outdoor power board (A HIC trouble is suspected).

Check the power supply facility (Check if a receiving electricity is lowered).

Check code

OCH502C

4230

Heatsink temperature trouble

Abnormal points and detection methods Causes and check points

Abnormal if TH8 detects a temperature outside the speciﬁ ed range during compressor operation.

TH8: Heatsink temperature thermistor

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Is 5110 displayed when restart?

Yes

Blocked outdoor fan

Malfunction of outdoor fan motor

Blocked airﬂ ow path

Rise of ambient temperature

Characteristic defect of thermistor

Malfunction of input circuit on outdoor power board

Malfunction of outdoor fan driving circuit

Refer to the diagnosis of check code 5110.

Does the fan rotate during compressor operation?

Yes

Is there any obstacle which blocks an airﬂ ow around the heatsink?

(no obstacle)

Is 5110 displayed when restart?

Check the wiring and connector connection TH8.

Is there any abnormality such as a disconnection, looseness or breakage?

Check the resistance of TH8.

Yes

(air path blocked)

Yes

TH8 temp. - resistance characteristic

0 ···180kΩ 25 ···50kΩ 50 ···17kΩ 70

···8kΩ 90 ···4kΩ

Refer to the diagnosis of check code 4400.

Connect the wiring/connector properly. Replace it in case of a breakage.

Improve the airﬂ ow path.

Is the resistance normal ?

Yes

Replace the thermistor (Defective thermistor).

Replace the outdoor power board (Defective outdoor power board).

Check code

OCH502C

4250

Power module trouble

Abnormal points and detection methods Causes and check points

Abnormal if overcurrent of DC bus or compressor is detected 30seconds after the compressor starts operating. To determine the source of abnormality, either the compressor or the power module, drive the power module forcedly.

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Check the outdoor stop valve.

Is the stop valve fully open?

Closed outdoor stop valve

Decrease of power supply voltage

Disconnection, looseness or conversed connection

of compressor wiring

Defective compressor

Defective outdoor power board

Open the stop valve fully.

Yes

Check whether the power supply voltage is normal or not.

Yes

Is the power supply voltage normal?

Yes

Turn the power OFF to check for looseness, disconnection or phases of the compressor wiring.

Are the wirings normal?

Yes

Disconnect the wiring to check the power module.

Ensure power supply from facility.

Connect the compressor wiring (U, V and W phase) properly, then turn the power back ON.

Does it operate normally?

Yes

Replace the outdoor power board or outdoor controller board. Defective power board.

Replace the compressor (Defective compressor).

Check code

OCH502C

4400

Rotational frequency of outdoor fan motor trouble

Abnormal points and detection methods Causes and check points

Abnormal if no rotational frequency is detected, or detected a value outside the speciﬁ ed range during fan motor operation.

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Check the fuse on the outdoor controller board.

Is the fuse blown?

Yes

(blown)

Malfunction of fan motor

Disconnection of CNF connector

Defective outdoor controller board

Replace the outdoor controller board. Replace the fan motor.

(Not blown)

Check the fan motor connector (CN1 and 2) for a disconnection or looseness.

Is there any abnormality such as a disconnection, looseness or breakage?

Remove the fan motor by disconnecting the fan motor connector CNF1 and CNF2, then check the voltage of outdoor controller board "Test points are;

VDCDC approx. 280 to 380V (fan connector 1-4) VCCDC approx. 15V (fan connector 5-4)"

Yes

Connect the wiring/connector properly. Replace it in case of a breakage.

Is the voltage normal ?

Yes

Replace the outdoor controller board.

Replace the fan motor.

Check code

OCH502C

5101

Compressor temperature thermistor (TH4) open/short

Abnormal points and detection methods Causes and check points

Abnormal if TH4 detects to be open/short. (The open/short detection is disabled for 10 minutes after compressor starts, during defrosting operation, or for 10 minutes after returning from the defrosting operation.) Open: 3 [37.4°F] or less Short: 217 [422.6°F] or more TH4: Compressor temperature thermistor

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Check the wiring and connector connection of TH4

Is there any abnormality such as a disconnection, looseness or breakage?

Yes

Disconnection or contact failure of connectors

Characteristic defect of thermistor

Defective outdoor controller board

The black square (■) indicates a switch position.

Connect the wiring/connector properly. Replace the connector in case of a breakage.

Disconnect the connector to check the resistance of TH4 using a tester

Is the detected resistance normal?

Yes

Check a temperature of TH4.

Is the detected temperature normal?

The detected temperature of TH4 can be displayed by an operation of SW1 on the outdoor controller board.

SW1 Setting

ON OFF

12345678

Display on LED1,2

-99.9 999.9 °F

Replace the controller board (Malfunction of thermistor circuit).

Replace the thermistor.

Unit

Yes

No abnormality ( A connector contact failure is suspected)

Check code

OCH502C

5102

Low-pressure saturated temperature thermistor (TH6) open/short

Abnormal points and detection methods Causes and check points

Abnormal if TH6 detects to be open/short. (The open/short detection is disabled during 10 sec. to 10 min. after compressor starts, during defrosting operation, or for 10 min. after returning from the defrosting operation.) Open: -40 [-40°F] or less Short: 90 [194°F] or more TH6:

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Check the wiring and connector connection of TH6.

Is there any abnormality such as a disconnection, looseness or breakage?

Low-pressure saturated temperature thermistor

Diagnosis Remedy

Yes

Disconnection or contact failure of connectors

Characteristic defect of thermistor

Defective outdoor controller board

The black square (■) indicates a switch position.

Connect the wiring/connector properly. Replace it in case of a breakage.

Disconnect the connector to check the resistance of TH6 using a tester.

Is the detected resistance normal?

Yes

Check a temperature of TH6.

Is the detected temperature normal?

The detected temperature of TH6 can be displayed by an operation of SW1 on the outdoor controller board

ON OFF

SW1 Setting

12345678

Display on LED1,2

-99.9 999.9 °F

Replace the controller board (Malfunction of thermistor circuit).

Replace the thermistor.

Unit

Yes

No abnormality ( A connector contact failure is suspected).

Check code

OCH502C

5105

Piping temperature thermistor (TH3) open/short

Abnormal points and detection methods Causes and check points

Abnormal if TH3 detects to be open/short. (The open/short detection is disabled during 10 sec. to 10 min. after compressor starts, during defrosting operation, or for 10 min. after returning from the defrosting operation.) Open: -40 [-40°F] or less Short: 90 [194°F] or more TH3: Piping temperature thermistor

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Check the wiring and connector connection of TH3.

Is there any abnormality such as a disconnection, looseness or breakage?

Yes

Disconnection or contact failure of connectors

Characteristic defect of thermistor

Defective outdoor controller board

The black square (■) indicates a switch position.

Connect the wiring/connector properly Replace it in case of a breakage.

Disconnect the connector to check the resistance of TH3 using a tester.

Is the detected resistance normal?

Yes

Check a temperature of TH3.

Is the detected temperature normal?

The detected temperature of TH3 can be displayed by an operation of SW1 on the outdoor controller board

ON OFF

SW1 Setting

12345678

Display on LED1,2

-99.9 999.9 °F

Replace the controller board (Malfunction of thermistor circuit).

Replace the thermistor.

Unit

Yes

No abnormality ( A connector contact failure is suspected).

Check code

The detected temperature of thermistor (TH7) can be displayed by an operation of SW1 on the outdoor controller board.

OCH502C

5106

Outdoor temperature thermistor (TH7) open/short

Abnormal points and detection methods Causes and check points

Abnormal if TH7 detects to be open/short Open: -40 [-40°F] or less Short: 90 [194°F] or more TH7: Outdoor temperature thermistor

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Check the wiring and connector connection of TH7.

Is there any abnormality such as a disconnection, looseness or breakage?

Yes

Disconnection or contact failure of connectors

Characteristic defect of thermistor

Defective outdoor controller board

The black square (■) indicates a switch position.

Connect the wiring/connector properly. Replace it in case of a breakage.

Disconnect the connector to check the resistance of TH7 using a tester

Is the detected resistance normal?

Yes

Check a temperature of TH7.

Is the detected temperature normal?

The detected temperature of thermistor (TH7)

The detected temperature of TH7 can be displayed by

can be displayed by an operation of SW1 on the

an operation of SW1 on the outdoor controller board.

outdoor controller board.

ON OFF

SW1 Setting

12345678

Display on LED1,2

-99.9 999.9 °F

Replace the controller board (Malfunction of thermistor circuit).

Replace the thermistor.

Unit

Yes

No abnormality ( A connector contact failure is suspected).

Check code

OCH502C

5109

HIC piping temperature thermistor (TH2) open/short

Abnormal points and detection methods Causes and check points

Abnormal if TH2 detects to be open/short. Open: -40 [-40°F] or less Short: 90 [194°F] or more TH2:

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Check the wiring and connector connection of TH2.

Is there any abnormality such as a disconnection, looseness or breakage?

HIC piping temperature thermistor

Yes

Disconnection or contact failure of connectors

Characteristic defect of thermistor

Defective outdoor controller board

The black square (■) indicates a switch position.

Connect the wiring/connector properly. Replace it in case of a breakage.

Disconnect the connector to check the resistance of TH2 using a tester.

Is the detected resistance normal?

Yes

Check a temperature of TH2.

Is the detected temperature normal?

The detected temperature of TH2 can be displayed by an operation of SW1 on the outdoor controller board.

SW1 Setting

ON OFF

12345678

Display on LED1,2

-99.9 999.9

Replace the controller board (Malfunction of thermistor circuit).

Replace the thermistor.

Unit

°C

*F=(9/5)×°C+32

Yes

No abnormality ( A connector contact failure is suspected).

Check code

The detected temperature of thermistor (TH8) can be displayed by an operation of SW1 on the outdoor controller board.

OCH502C

5110

Heatsink temperature thermistor(TH8) open/

Abnormal points and detection methods Causes and check points

Abnormal if TH8 detects to be open/short.

P36/48 model Open: -102 [215.6°F] or less Short: 34.8 [-30.6°F] or more

P60 model Open: 170.3 [338.5°F] or less Short: 35.1 [-31.8°F] or more TH8: Heatsink temperature thermistor

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Check the wiring and connector connection of TH8.

short

Disconnection or contact failure of connectors

Characteristic defect of thermistor

Defective outdoor controller board

The black square (■) indicates a switch position.

Is there any abnormality such

as a disconnection, looseness or

breakage?

Disconnect the connector to check the resistance of TH8 using a tester.

Is the detected resistance normal?

Yes

Check a temperature of TH8.

Yes

The detected temperature of thermistor (TH8)

The detected temperature of TH8 can be displayed by

can be displayed by an operation of SW1 on the

an operation of SW1 on the outdoor controller board.

outdoor controller board.

SW1 Setting

ON OFF

12345678

Connect the wiring/connector properly. Replace it in case of a breakage.

Replace the thermistor.

Display on LED1,2

-99.9 999.9 °F

Unit

Is the detected temperature normal?

Yes

Replace the controller board (Malfunction of thermistor circuit).

No abnormality ( A connector contact failure is suspected).

Check code

OCH502C

5201

High-pressure sensor (63HS) trouble

Abnormal points and detection methods Causes and check points

When the detected pressure in the high-pressure sensor is 1kgf/F or

less during operation, the compressor stops operation and enters into an anti-restart mode for 3 minutes.

When the detected pressure is 1kgf/F immediately before restarting,

the compressor falls into an abnormal stop with a check code <5201>.

For 3 minutes after compressor restarting, during defrosting operation,

and for 3 minutes after returning from defrosting operation, above mentioned symptoms are not determined as abnormal.

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Check the wiring and connector connection.

Defective high-pressure sensor

Decrease of internal pressure caused by gas

leakage

Disconnection or contact failure of connector

Malfunction of input circuit on outdoor controller

board

The black square (■) indicates a switch position.

63HS: High-pressure sensor

Is there any abnormality such as a disconnection, looseness or breakage?

Check an internal pressure of the refrigerant circuit.

Is the detected internal pressure normal?

Yes

Check the detected pressure in 63HS, then compare it with the internal pressure.

Is the detected pressure normal?

Yes

The detected pressure in 63HS can be displayed by an operation of SW1 on the outdoor controller board.

SW1 Setting

ON OFF

12345678

Connect the wiring/connector properly. Replace it in case of a breakage.

Check the refrigerant circuit, and reﬁ ll refrigerant after repairing the leakage.

Display on LED1,2

0.0 711.0 PSIG

Unit

Replace the 63HS.

Replace the outdoor controller board.

Check code

OCH502C

5202

Low-pressure sensor (63LS) trouble

Abnormal points and detection methods Causes and check points

When the detected pressure in the low-pressure sensor is -2.3kgf/F

or less, or 23.1kgf/F or more during operation, the compressor stops operation with a check code <5202>.

For 3 minutes after compressor restarting, during defrosting operation,

and for 3 minutes after returning from defrosting operation, above mentioned symptoms are not determined as abnormal.

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Check the wiring and connector connection.

Is there any abnormality such as a disconnection, looseness or breakage?

Yes

Defective low-pressure sensor

Decrease of internal pressure caused by gas

leakage

Disconnection or contact failure of connector

Malfunction of input circuit on outdoor controller

board

The black square (■) indicates a switch position.

63LS: Low-pressure sensor

Connect the wiring/connector properly. Replace it in case of a breakage.

Check an internal pressure of the refrigerant circuit.

Is the detected internal pressure normal?

Yes

Check the detected pressure in 63LS, then compare it with the internal pressure.

Is the detected pressure normal?

The detected pressure in 63LS can be displayed by an operation of SW1 on the outdoor controller board.

SW1 Setting

ON OFF

12345678

Check the refrigerant circuit, and reﬁ ll refrigerant after repairing the leakage.

Display on LED1,2

-99.9 999.9 kgf/cm²

*1kgf/

Unit

F =14.22PSIG

Replace the 63LS.

Replace the outdoor controller board.

Check code

OCH502C

5300

Primary current error

Abnormal points and detection methods Causes and check points

Abnormal if the detected current sensor input value (primary current) during compressor operation is outside the speciﬁ ed range.

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Check the input current at the time of abnormal stop.

Does it satisfy the condition 1 below?

Yes

Decrease/ trouble of power supply voltage

Disconnection of compressor wiring

Input sensor trouble on outdoor power board

The power supply voltage is decreased or abnormal. Check the power supply facility.

Check the compressor wiring for disconnection or looseness.

Is there any abnormality such as a disconnection or looseness?

Condition 1:

Model Error detecting condition P36 model P48 model

P60 model

Yes

34A or more for 10 consecutive seconds, or 38A or more

37A or more for 10 consecutive seconds, or 40A or more

Connect the compressor wiring properly.

Replace the outdoor power board (Malfunction of current sensor circuit).

Check code

OCH502C

6600

Duplex address error

Abnormal points and detection methods Causes and check points

Abnormal if 2 or more units with the same address are exsisting. There are 2 units or more with the same address

in their controller among outdoor unit, indoor unit, Fresh Master, Lossnay or remote controller

Noise interference on indoor/outdoor connectors

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Search for a unit with the same address as the source of abnormality.

Is there any unit with the same address?

Yes

Correct the address, and turn the power OFF of indoor/outdoor unit, Fresh Master or Lossnay simultaneously for 2 minutes or more, then turn the power back ON.

Turn the power back ON.

Does it operate normally?

Yes

Malfunction of sending/receiving circuit on indoor/outdoor unit is suspected.

There is no abnormality on the AC unit It might be caused by an external noise, so check the transmission line to remove the factor(s).

Check code

OCH502C

6602

Transmission processor H/W error

Abnormal points and detection methods Causes and check points

Abnormal if the transmission line shows "1" although the transmission processor transmitted "0".

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

A wiring work was performed while the power OFF

Yes

A transmitting data collision occurred because of a

wiring work or polarity change has performed while the power is ON on either of the indoor/outdoor unit, Fresh Master or Lossnay

Malfunction of transmitting circuit on transmission

processor

Noise interference on indoor/outdoor connectors

If the wiring work was performed while the power ON, turn the power OFF of indoor/ outdoor unit, Fresh Master or Lossnay simultaneously for 2 minutes or more, then turn the power back ON.

Turn the power back ON.

Does it operate normally?

Yes

Replace the indoor/outdoor controller board.

There is no abnormality on the AC unit. It might be caused by an external noise, so check the transmission line to remove the factor(s).

Check code

OCH502C

6603

Transmission bus BUSY error

Abnormal points and detection methods Causes and check points

Over error by collision

Abnormal if no-transmission status caused by a transmitting data collision is consecutive for 8 to 10minutes.

Abnormal if a status, that data is not allowed on the transmission line

because of noise and such, is consecutive for 8 to 10 minutes

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Check whether the transmission line to the indoor unit, Fresh Master, Lossnay or remote controller is miswired to the terminal block (TB7) on outdoor unit or not.

The transmission processor is unable to transmit due

to a short-cycle voltage such as noise is mixed on the transmission line

The transmission processor is unable to transmit due

to an increase of transmission data amount caused by a miswiring of the terminal block (transmission line) (TB3) and the terminal block (centralized control line) (TB7) on the outdoor unit.

The share on transmission line becomes high due

to a mixed transmission caused by a malfunction of repeater on the outdoor unit, which is a function to connect/disconnect transmission from/to control system and centralized control system.

Is the transmission line miswired?

(Not miswired)

Check whether the transmission line with the other refrigerant system of the indoor unit, Fresh Master or Lossnay is miswired to the terminal block (TB3) on outdoor unit or not.

Is the transmission line miswired?

Yes

(Not miswired)

Turn the power back ON.

Does it operate normally?

Yes

(miswired)

Correct the wiring, then turn the power back ON.

Replace the indoor/outdoor controller board.

There is no abnormality on the AC unit. It might be caused by an external noise, so check the transmission line to remove the factor(s).

Check code

OCH502C

6606

Signal communication error with transmission processor

Abnormal points and detection methods Causes and check points

Abnormal if the data of unit/transmission processor were not normally

transmitted.

Abnormal if the address transmission from the unit processor was not

normally transmitted.

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Turn the power OFF of indoor/outdoor unit, Fresh Master, Lossnay and remote controller simultaneously for 2 minutes or more, then turn the power back ON.

Does it operate normally?

Accidental disturbance such as noise or lightning

surge

Hardware malfunction of transmission processor

Replace the controller (Defect of error source controller).

Yes

There is no abnormality on the AC unit. It might be caused by an external noise, so check the transmission line to remove the factor(s).

Check code

OCH502C

6607

No ACK error

Abnormal points and detection methods Causes and check points

Represents a common error detection

An abnormality detected by the sending side controller when receiving no ACK from the receiving side, though signal was once sent.The sending side searches the error in 30 seconds interval for 6 times continuously.

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

An abnormality detected by the indoor unit if receiving no ACK when transmitting signal from the indoor unit to the outdoor unit.

The previous address unit does not exist since

the address switch was changed while in electric continuity status.

Decline of transmission voltage/signal caused by

tolerance over on transmission line

·At the furthest end: 200m

·On remote controller line: (12m)

Decline of transmission voltage/ signal due to

unmatched transmission line types

·Types for shield line: CVVS, CPEVS

·Line diameter: 1.25 E or more

Decline of transmission voltage/ signal due to

excessive number of connected units

Malfunction due to accidental disturbance such as

noise or lightning surge

Defect of error source controller

Contact failure of indoor/outdoor unit transmission

line.

Disconnection of transmission connector (CN2M) on

indoor unit.

Malfunction of sending/receiving circuit on indoor/

outdoor unit.

Chart 1 of 4

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

An abnormality detected by the remote controller if receiving no ACK when sending data from the remote controller to the indoor unit.

The cause of the displayed address and attribute is on the remote

controller side An abnormality detected by the indoor unit if receiving no ACK when transmitting signal from the indoor unit to the remote controller.

While operating with multi refrigerant system indoor

units, an abnormality is detected when the indoor unit transmit signal to the remote controller during the other refrigerant-system outdoor unit is turned OFF, or within 2 minutes after it turned back ON.

Contact failure of indoor unit or remote controller

transmission line

Disconnection of transmission connector (CN2M) on

indoor unit

Malfunction of sending/receiving circuit on indoor

unit or remote controller

While operating with multi refrigerant system indoor

Contact failure of indoor unit or remote controller

transmission line

Disconnection of transmission connector (CN2M) on

indoor unit

Malfunction of sending/receiving circuit on indoor

unit or remote controller

Check code

OCH502C

6607

No ACK error

Abnormal points and detection methods Causes and check points

While the indoor unit is operating with multi

The cause of displayed address and attribute is on the Fresh Master

side An abnormality detected by the indoor unit if receiving no ACK when transmitting signal from the indoor unit to the Fresh Master.

The cause of displayed address and attribute is on Lossnay side

An abnormality detected by the indoor unit if receiving no ACK when the indoor unit transmit signal to the Lossnay.

refrigerant system Fresh Master, an abnormality is detected when the indoor unit transmits signal to the remote controller while the outdoor unit with the same refrigerant system as the Fresh Master is turned OFF, or within 2 minutes after it turned back ON.

Contact failure of indoor unit or Fresh Master

transmission line

Disconnection of transmission connector (CN2M) on

indoor unit or Fresh Master

Malfunction of sending/receiving circuit on indoor

unit or Fresh Master

An abnormality is detected when the indoor unit

transmits signal to Lossnay while the Lossnay is turned OFF.

While the indoor unit is operating with the other

refrigerant Lossnay, an abnormality is detected when the indoor unit transmits signal to the Lossnay while the outdoor unit with the same refrigerant system as the Lossnay is turned OFF, or within 2 minutes after it turned back ON.

Contact failure of indoor unit or Lossnay transmission

line

Disconnection of transmission connector (CN2M) on

indoor unit

Malfunction of sending/receiving circuit on indoor

unit or Lossnay

Chart 2 of 4

The controller of displayed address and attribute is not recognized The previous address unit does not exist since

the address switch was changed while in electric continuity status.

An abnormality detected at transmitting from the

indoor unit since the Fresh Master/Lossnay address are changed after synchronized setting of Fresh Master/Lossnay by the remote controller.

Check code

OCH502C

6607

No ACK error

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Procedure 1:

Turn the power OFF of indoor/outdoor unit, Fresh Master, Lossnay and remote controller simultaneously for 2 minutes or more, then turn the power back ON.

Is the abnormality reproduced?

Yes

Check the address switch on the source of abnormality.

Is it set properly?

There is no abnormality on the AC unit. It might be caused by an external noise, so check the transmission line to remove the factor(s).

Set the address properly, then perform the procedure 1.

Chart 3 of 4

Yes

Check the transmission line for a disconnection and looseness (on the terminal board and connector).

The transmission line is connected properly.

Yes

Check the transmission line whether it exceeds the tolerance or not.

It is not exceeding the tolerance.

Yes

Check whether the correct kind of transmission line is used or not.

Connect the transmission line properly,

then perform the procedure 1.

Correct it within the tolerance, then perform the procedure 1.

Continue to the next page

Check code

OCH502C

6607

No ACK error

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Continued from the previous page

Is the correct kind of transmission line used?

Yes

Is it operating in multi refrigerant system?

Yes

When operating in a multi refrigerant system (2 or more outdoor units), check if any of the indoor unit stores non-existing address information.

Apply the correct kind of transmission line, then perform the procedure 1.

When operating in a single refrigerant system (single indoor unit), the controller of the displayed address/attribute is defective.

Chart 4 of 4

Is the address information correct?

Yes

Replace the controller board which the displayed address/attribute belongs to.

Does it operate normally?

Yes

Delete the unnecessary address using a manual setting function on the remote controller (Only for operating in a system with the Fresh Master/ Lossnay is connected, or in a multi refrigerant system with group setting is set).

Defective outdoor controller board (repeater circuit) on the outdoor unit is suspected. Replace the outdoor controller board one by one, then check for normal operation.

Complete

Check code

OCH502C

6608

No response frame error

Abnormal points and detection methods Causes and check points

Abnormal if receiving no response command while already received ACK. The sending side searches the error in 30 seconds interval for 6 times continuously.

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Turn the power OFF of indoor/outdoor unit, Fresh Master, Lossnay and remote controller simultaneously for 2 minutes or more, then turn the power back ON.

Continuous failure of transmission due to noise etc

Decline of transmission voltage/signal caused by

tolerance over on transmission line

·At the furthest end: 200m

·On remote controller line: (12m)

Decline of transmission voltage/ signal due to

unmatched transmission line types

·Types for shield line: CVVS, CPEVS

·Line diameter: 1.25 E or more

Accidental malfunction of error source controller

Does it operate normally?

Yes

Check the transmission line for a disconnection and looseness (on the terminal board and connector).

The transmission line is connected properly.

Yes

Check the transmission line whether it exceeds the tolerance or not.

It is not exceeding the tolerance.

Yes

Check whether the correct kind of transmission line is used or not.

Replace the controller board (Defect of the controller which the displayed address/attribute belong to).

Connect the transmission line properly.

Correct it within the tolerance.

Is correct kind of transmission line used?

Yes

Replace it with the correct kind of transmission line.

There is no abnormality on the AC unit. Check the transmission line for transmission wave and noise.

Check code

OCH502C

7100

Total capacity error

Abnormal points and detection methods Causes and check points

When the total of the number on connected indoor unit model names exceeds the speciﬁ ed capacity level (130% of the number on the outdoor unit model name), a check code <7100> is displayed.

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Check the total number of connected indoor unit model names.

The total of number on connected indoor unit model

names exceeds the speciﬁ ed capacity level

P36 model:~code26

P48 model:~code34

P60 model:~code56

The model name code of the outdoor unit is

registered wrongly.

Is the total under 130% of the number of outdoor unit model name?

Yes

Check the capacity code switch (SW2 on the indoor controller board) on the connected indoor unit.

Is is set properly?

Yes

Check the model selection switch (SW4 on the outdoor controller board) of the outdoor unit.

Correct the total number of connected indoor unit model name within 130% of the number on the outdoor unit model name.

Set the switch properly.

Is is set properly?

Yes

Set the switch properly.

complete

Check code

OCH502C

7101

Capacity code error

Abnormal points and detection methods Causes and check points

When a connected indoor unit is incompatible, a check code <7101> is displayed.

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Check the model selection switch (SW4 on the indoor controller board) of the connected indoor unit.

Is it set properly? Set the switch properly.

The model name of connected indoor unit (model code) is read as incompatible.

The connectable indoor units are:

P36/P48 model: P6 to P54 model (code3 to 28)

·P60 model: P15 to P140 model (code 4 to 28

)

Yes

The model code of the connected indoor unit can be displayed by an operation of SW1 on the outdoor unit.

Check code

OCH502C

7102

Connecting excessive number of units

Abnormal points and detection methods Causes and check points

When the connected AC unit exceeds the limit, a check code <7102> is displayed.

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Check whether the connecting unit exceeds the limit or not.

Connecting more AC units than the limit Abnormal if connecting status does not comply with the following limit;

Connectable up to 12 indoor units

Connect at least 1 indoor unit (Abnormal if connected

none)

Connectable only 1 ventilation unit

Does it exceed the limit?

Check if at least 1 indoor unit is connected.

Is an indoor unit connected?

Yes

Connect less number of units than the limit.

The model code of the connected indoor unit can be displayed by an operation of SW1 on the outdoor unit.

Connect indoor unit.

Check whether the M-NET line to the indoor unit is connected or not.

Check code

OCH502C

7105

Address setting error

Abnormal points and detection methods Causes and check points

The address setting of outdoor unit is wrong. Wrongly set address of indoor unit

The outdoor unit is not set in 000, or in the range of 51

to 100.

●Diagnosis of defectives

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Check whether the outdoor unit address is set in 000, or in the range of 51 to 100.

Set the address properly, then turn the power OFF of indoor/outdoor unit, Fresh

Is the address setting correct?

Master, Lossnay and remote controller simultaneously for 2 minutes or more, and turn the power back ON.

Yes

Replace the outdoor controller board.

· 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.



Switch to the remote controller self-diagnosis mode.

Press the

button for 5 seconds or more. The display content will

change as shown below.

Press the

button to start self-diagnosis.



Remote controller self-diagnosis result

[When the remote controller is functioning correctly]

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

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

ing circuit is defective.

The remote controller must be replaced with a new one.

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

→ 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.

(Error display 3)

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

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.



To cancel remote controller diagnosis

Press the

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

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

Power on indicator

8-2. REMOTE CONTROLLER DIAGNOSIS

OCH502C

CHECK

FILTER

CHECK

When the number of data errors is "02":

Transmission data from remote controller

Transmission data on transmission path

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.

• 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.

• 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.

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

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

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

( ) is not displayed on the remote controller.

(M-NET remote controller

is not fed.)

• 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.

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

• 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.

8-3. REMOTE CONTROLLER TROUBLE

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.

( ) 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.

• 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.

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

• 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.

OCH502C

CHECK

STAND BY DEFROST

(1) For M-NET remote controller systems

CENTRALLY CONTROLLED

CLOCK

°C

ERROR CODE

TEMP.

TIMER SET

ON OFF

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)

(2) For MA remote controller systems

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 two 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.

The compressor that is

running soon after powered

on is slow to speed up.

"Cooling (Heating)" blinks

Normal display

"Defrost "

Light out

STAND BY

“HO” blinks “PLEASE WAIT” blinks

Light out

—

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 1 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.

The rate of speed-up is kept at 2 Hz/min. during 4 hours after powered on.

This can prevent a compressor failure that occurs when a non-energized compressor speeds up rapidly with refrigerant collected in the compressor.

Symptom

Display of remote controller

CAUSE

8-4. THE FOLLOWING SYMPTOM DO NOT REPRESENT TROUBLE (EMERGENCY)

OCH502C

Outdoor unit

Switch

SWU1 1s digit

SWU2 10ths digit

SW1 Digital display switch

SW2 Function switch

SW5 Function switch

SW3 Test run

SW4 Model select

Step

Operation in each switch setting

ON OFF When to set

Remarks

Before turning the power on

Before the power is turned on.

Rotary switch

1 2 3 4 5

6 1

Function

1~8

1~6

Can be set either during operation or not.

Before turning the power on

Always

OFF to ON any time after the power is turned on.

During compressor running

Before turning the power on

Enable

Disable

Enable

Active

Normal

Inactive

Heating

—

Enable

Cooling

OFF

ON OFF

Without centralized controller

With centralized controller

Clear

Do not clear

Normal Normal

—

Normal

Clear abnormal data Run adjustment mode

Selects operating system startup Connection information clear switch Abnormal data clear switch input Pump down Auto change over from remote controller

Can be set when off or during operation

Demand control

Silent mode

Silent mode/Demand control selsction (see 8.6)

Mode setting

ON/OFF from outdoor unit

<Initial settings> Set for each capacity.

—

Change the indoor-linear expansion valve opening at start

Change the indoor-linear expansion valve opening at defrost

SWU2

(10ths digit)

SWU1

(1s digit)

SWU2

(10ths digit)

SWU1

(1s digit)

OFF

2345678

OFF

2345678

OFF

23456

OFF

Can be set when off or during operation

Switching the target sub cool

Auxiliary heater

During the outdoor unit is in HEAT operation, slightly opens the linear expansion valve on the indoor unit which is in FAN, STOP, COOL or thermo-OFF.

During the outdoor unit is in HEAT operation, fully opens the linear expansion valve on the indoor unit which is in FAN, COOL, STOP, or thermo-OFF.

Active Inactive

* SW5-7 Opens the indoor-linear expanion valve as a countermeasure against the indoor unit in FAN, COOL, STOP, or thermo-OFF operation with refrigerant-shortage status due to an accumulation of liquid refrigerant in the indoor unit. ** SW5-8 Countermeasure against room temperature rise for indoor unit in FAN, COOL, and thermo-OFF (heating) mode.

MODEL SELECT 1: ON 0: OFF

MODELS

PUMY-P60

01100000

12345612

SW4

SW8

OFF

2345678

8-5. INTERNAL SWITCH FUNCTION TABLE

OCH502C

PUMY-P60NKMU PUMY-P60NKMU-BS

The black square (■) indicates a switch position.

OFF

2345678

OFF

23456

OFF

Outdoor unit

Switch

SW6 Function switch

SW7 Function switch

SW8 Model select

Step

Operation in each switch setting

ON OFF When to Set

Remarks

Before turning the power on.

After turning the power on.

During compressor running in heating mode.

Can be set when off or during operation

2 3

4 5

1 2

Function

—— —

—

—— —

—

Normal

Switch of current limitation reading in a different way

Enable

Normal

During heating operation only *

Include when the heating operation is OFF. **

Ignore current sensor abnormality

Enable

Normal

Enable

Normal

High heating performance mode

Simultaneous heating and cooling with external heater

Forced defrost

Normal

Forced defrost

Enable (For high humidity)

Enable

Normal

Change of defrosting control

Setting to energize the freeze stat heater (optional part)

Enable

Normal

Ignore refrigerant filling abnormality

Enable

Normal

Enable

Normal

Switching the target discharge pressure (Pdm)

Enable

Normal

Switching (1) the target evaporation temperature (ETm)

Switching (2) the target evaporation temperature (ETm)

—

——— —

—

— —

—

The black square (■) indicates a switch position.

OCH502C

* During heating operation and the ambient temperature is 4°C (39°F) or below, the freeze prevention heater is energized. ** During heating mode is OFF (include thermo-OFF in cooling mode), and the ambient temperature is 4°C (39°F) or below, the freeze prevention heater is energized.

CN51

5 4 3

 















1: Error display lamp

2: Compressor operation lamp

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



 











CN3N

SW1

SW2

2 3

X, Y: Relay (DC1mA)

SW1 SW2

Heating

Validity of SW1

OFF

Cooling

Invalidity of SW1





 











CN3D

SW1

SW2

2 3

The silent mode and the demand control are selected by switching the Dip switch 2-6 on outdoor controller board. It is possible to set it to the following power consumption (compared with ratings) by setting SW1, 2.

Silent mode

Silent mode operation

Outdoor controller board DIP SW2-6

SW1 SW2 Function

Demand control

OFF ON

ON OFF ON

— OFF OFF

ON OFFONON

100%

75% 50%

(Normal)

(Stop)

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

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

 Relay power supply  Procure locally  Max. 10m

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

 Relay power supply  Procure locally  Max. 10m

 Lamp power supply  Procure locally  Max. 10m

8-6. OUTDOOR UNIT INPUT/OUTPUT CONNECTOR

OCH502C

State (CN51)

Auto change over (CN3N)

Silent Mode / Demand Control (CN3D)

Parts name

Check points

Disconnect the connector then measure the resistance with a tester. (At the ambient temperature 10:~30:)

Thermistor (TH2) <HIC piping temp.>

Thermistor (TH3) <Piping temp.>

Thermistor (TH4) <Compressor>

Thermistor (TH6) <

Low pressure saturated

temperature> Thermistor (TH7)

Normal

160k"~410k"

4.3k"~9.6k"

TH4 TH2 TH3 TH6 TH7

Abnormal

Open or short

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

)

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

Motor for compressor (MC)

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

Normal

1197 ± 10"

Abnormal

Open or short

Solenoid valve coil <Bypass valve> (SV1)

Refer to next page.

Fan motor (MF1, MF2)

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

)

Normal

1580 ± 110"

Abnormal

Open or short

Normal

0.37"

Abnormal

Open or short

8-7. HOW TO CHECK THE PARTS

OCH502C

PUMY-P60NKMU PUMY-P60NKMU-BS

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

board and fan motor.)

Self check Symptom : The outdoor fan does not rotate.

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

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

Measure the voltage in the outdoor controller

board.

TEST POINT

1 : VDC (between 1 (+) and 4 (-) of the fan connector): VDC DC265-360V

TEST POINT 2 : VCC (between 5 (+) and 4 (-) of the fan connector): VCC DC15V

Wiring contact check

Contact of fan motor connector (CNF1, 2)

Fuse check

Check the fuse (F500) on outdoor controller board.

Recover wiring.

Replace outdoor controller board.

Replace the fan motor.

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

Replace outdoor

controller board.

Replace the fan motor.

Is the voltage normal?

Is there contact failure?

Yes

Did the fuse blow?

Yes

Check the operation of fan. END

Yes

Check the operation. END

OCH502C

8-8. HOW TO CHECK THE COMPONENTS

-20-100 1020304050

Temperature

Resistance (k)

()

-4 -14 32 50 68 86 104 122

(°F)

500

400

300

200

100

50 75 100 120

Resistance (k)

(°C)

77 112 167 212 248 (°F)

0.5

2.5 5

2.5

4.5

Vout (V)

PRESSURE (MPa)

WHT

BLU

BLK

SENSOR

5V DC

GND

63HS

Vout

MICRO PROCESSOR

MULTI CONTROLLER BOARD

- : 5V (DC) - : Output Vout (DC)

OCH502C

Low temperature thermistors

• Thermistor <HIC pipe> (TH2)

• Thermistor <Outdoor pipe> (TH3)

• Thermistor <Low pressure saturated temperature> (TH6)

• Thermistor <Outdoor> (TH7)

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

t =15exp{3480(

0°C [32°F] 15k' 10°C [50°F] 9.6k' 20°C [68°F] 6.3k' 25°C [77°F] 5.2k'

High temperature thermistor

• Thermistor <Compressor> (TH4)

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

Rt =7.465exp{4057(

20°C [68°F] 250k' 30°C [86°F] 160k' 40°C [104°F] 104k' 50°C [122°F] 70k' 60°C [140°F] 48k'

273+t – 273

273+t – 393

)}

t : °C = (°F-32)/1.8

30°C [86°F] 4.3k' 40°C [104°F] 3.0k'

)}

t : °C = (°F-32)/1.8

70°C [158°F] 34k' 80°C [176°F] 24k' 90°C [194°F] 17.5k' 100°C [212°F] 13.0k' 110°C [230°F] 9.8k'

Vout (V)

3.5

2.5

0.5

0.85 1.7 PRESSURE

(MPa)

Vout

SENSOR

- : 5V (DC) - : Output Vout (DC)

MULTI CONTROLLER BOARD

RED

WHT

BLK

63LS

5V DC

MICRO PROCESSOR

GND

8-9. TEST POINT DIAGRAM

OCH502C

Outdoor controller board PUMY-P60NKMU PUMY-P60NKMU-BS

<CAUTION> TEST POINT is high voltage.

SW8

Model select

SW6

Function switch

SW5

Function switch

SW1

Display selection (Self diagnosis)

SWU2, SWU1

Address setting

CN3N

Auto change over

63H

High pressure switch

CN3D

Input of demand control

TH2 Thermistor

TH4 Thermistor

TH3 Thermistor

TH7/TH6 Thermistor

63LS

Low pressure sensor

63HS

High pressure 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 centralized 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: Not used 6-5: 16V DC 7-5: 16V DC

CNAC

Power supply for multi controller board 208/230VAC

SV1

Bypass valve

21S4

Four-way valve

VSP

(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 : DC310V 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) : DC310V (Same as CNF1,2 1(+)–4(-))

VCC (TEST POINT2)

(Voltage between pins of C82A) : DC15V (Same as CNF1,2 5(+)–4(-))

CNDC

DC280-380V (1(+)–3(-))

Outdoor power board

OCH502C

PUMY-P60NKMU PUMY-P60NKMU-BS

CN4 Connect to the outdoor controller circuit board (CN4)

Connect to the smoothing capacitor CB -

Brief check of POWER MODULE * Usually, each point is 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 L1 - P1 , L2 - P1 , L3 - P1 , L1 - N1 , L2 - N1 , L3 - N1

2.Check of IGBT circuit

P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W Note:The marks, L1 , L2 , L3 , 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 outdoor controller circuit board (0-5 V DC) 2-5: Zero cross signal (0-5 V DC) 3-4: 18 V DC 6-5: 16 V DC 7-5: 16 V DC

CN52C

52C driving signal Connect to the outdoor controller circuit board (CN52)

CNDC

280-380 V DC (1+, 3-) Connect to the outdoor controller circuit board (CNDC)

E2, E3

Connect to the earth

U/V/W

Connect to the compressor (MC) Voltage among phases: 10 V-180 V AC

Connect to the smoothing capacitor CB +

DCL1, DCL2

Connect to DCL

EI, E4

Connect to the earth

CNAC1, CNAC2

203/230 V AC Connect to the outdoor controller circuit board (CNAC)

NI, LI

Voltage of 208/230 V AC is input (Connect to the terminal block (TB1))

Transmission power board

OCH502C

PUMY-P60NKMU PUMY-P60NKMU-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

8-10. OUTDOOR UNIT FUNCTIONS

1011121314

151617181920212223242526272829

SW1 setting

12345678

00000000

10000000

01000000

11000000

00100000

10100000

01100000

11100000

00010000

10010000

01010000

11010000

00110000

10110000

01110000

11110000

00001000

10001000

01001000

11001000

00101000

10101000

01101000

11101000

00011000

10011000

01011000

11011000

00111000

10111000

01111000

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

21S4

No.3 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

1222

1400

Delay code

1402

1600

1601

4320

4330

4350

Abnormality delay

Compressor temperature abnormality

Compressor temperature sensor (TH4) abnormality

Outdoor pipe temperature sensor (TH3) abnormality

Heatsink thermistor (TH8) abnormality

Outside air temperature sensor (TH7) abnormality

TH2(HIC) open/short abnormality delay

63LS abnormality delay

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 flashing

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

Compressor temperature

abnormality

Indoor unit

capacity error

Compressor temperature

abnormality delay

Voltage abnormality

delay

Compressor temperature

abnormality delay

Voltage abnormality

delay

Insufficient refrigerant

amount abnormality

Insufficient refrigerant

amount abnormality delay

Stop valve blockage

abnormality delay

4-way valve disconnection

abnormality delay

HIC(TH2)

abnormality delay

63LS

abnormality delay

Stop valve blockage

abnormality delay

4-way valve disconnection

abnormality delay

HIC(TH2)

abnormality delay

63LS

abnormality delay

Insufficient refrigerant

amount abnormality delay

TH3 abnormality

delay

Power module

abnormality delay

Power module

abnormally delay

Outdoor fan rotantial fre-

quency abnormality delay

TH6 abnormality

delay

Outdoor fan rotantial

frequency abnormality delay

63HS abnormality

Current sensor

open/short

TH7 abnormality

delay

TH8 abnormality

delay

TH8 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

abnormality

start over current inter-

ception abnormality delay

start over current inter-

ception abnormality delay

SHd(low discharge temperature)

abnormality delay

Voltage abnormality

OCH502C

SW:setting

0....OFF

1....ON

3132333435

38394041424344

SW1 setting

12345678

111110 00

00000100

10000100

01000100

11000100

00100100

10100100

01100100

11100100

00010100

10010100

01010100

11010100

00110100

10110100

01110100

11110 100

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 (×10)

0 – 999.9 (A)

0000 – 9999 (×10)

0 – 255

0 – 999.9 (V)

OFF

Td over heat

prevention

Discharge

pressure

control

Heatsink

over heat pre-

vention control

SHd declease

prevention

Compressor

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

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

Compressor temperature control

Hz control by compressor 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 control Input current control

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 detected

The radiator panel temperature

when microprocessor of POWER

BOARD abnormality is detected

–

999.9 [Arms]

-99.9

–

999.9 (Short/Open:-99.9 or 999.9)

63LS

abnormality

HIC(TH2)

abnormality

Stop valve

blockage

abnormality

4-way valve

disconnection

abnormality

TH6 abnormality

Power module

abnormality

Pd abnormality

control (heating)

SV control

Max. Hz

control

Input current

control

Frequency restrain

of receipt voltage

change

Pd Back up

(heating)

OCH502C

123 4 756 8

Display of actual operating

frequency

Display of target frequency

Display of number of outdoor

fan control steps (target)

Display of opening pulse of

indoor LEV

Display of outdoor subcool

(SC) data and detection data

from high-pressure sensor and

each thermistor

Notes

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.

0 - 2000

−99.9 - 999.9

Outdoor LEV-A opening pulse

63LS value

HIC(TH2) value

Outdoor LEV-A opening

pulse when abnormaliy

delay is detected

Outdoor LEV-B opening

pulse when abnormaliy

delay is detected

63LS value when

abnormaliy delay is detected

HIC(TH2) value

when

abnormaliy delay is detected

63LS value when

abnormaliy is detected

HIC(TH2) value

when

abnormaliy is detected

Outdoor LEV-A opening pulse

when abnormaliy is detected

Outdoor LEV-B opening pulse

SW1 setting

12345678

00101100

10101100

01101100

11101100

00011100

10011100

01011100

59 11 0111 00

60 00111100

61 10111100

62 0 1111100

63 11111100

64 00000010

65 10000010

66 01000010

69 10100010

70 01100010

11100010

00010010

10010010

01010010

11010010

00110010

10110010

01110010

8081828384

00001010

10001010

01001010

11001010

00101010

10101010

Outdoor LEV-B opening pulse

when abnormaliy is detected

Operational frequency

Target frequency

Outdoor fan control step number

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

0 – 2000

0 – 15

0 – 255 (plus decimal places)

OCH502C

Display of target subcool data

Display of indoor SC/SH data

Display of target subcool step data

Display of all control target data

Display on the LED1, 2 (display data)

-99.9 – 999.9

during heating: subcool (SC)/during cooling: superheat (SH)

0.0 – 20.0

-99.9 – 999.9

Pdm (0.0 – 30.0)

ETm (-2.0 – 23.0)

SCm (0.0 – 20.0)

SCm/SHm (0.0 – 20.0)

100

101

102

103

105

106

107

108

109

110

111

112

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

Target subcool °C

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/%

Target ET display (cooling) °C

Target outdoor SC (cooling) °C

Target indoor SC/SH (IC1) °C

Target indoor SC/SH (IC2) °C

Target indoor SC/SH (IC3) °C

Target indoor SC/SH (IC4) °C

Target indoor SC/SH (IC5) °C

678

Display mode

No.

Notes

SW1 setting

12345678

01101010

11101010

00011010

10011010

01011010

11011010

00111010

10111010

01111010

11111010

00000110

10000110

01000110

11000110

00100110

10100110

01100110

11100110

10010110

01010110

11010110

00110110

10110110

01110110

11110110

00001110

-99.9 – 999.9

(When the indoor unit is not connected, it is displayed as “0”.)

-99.9 – 999.9

Display of outdoor subcool (SC) data

and detection data from high-pressure

sensor and each thermistor

OCH502C

Notes

OCH502C

Display of all control target data

678

Display on the LED1, 2 (display data)

SCm/SHm (0.0 – 20.0)

Display of detection data from

high-pressure sensor and

each thermistor

0.0 – 711.0 [PSIG]

-99.9 – 999.9 [°F]

-99.9 ~ 999.9 [°F]

Display of opening pulse of indoor

LEV at time of abnormailty delay

0 – 2000

Display of actual frquency at time of abnormality delay

0 – FF (16 progressive)

Display of fan step number at time of abnormailty delay

0 – 15

Display mode

Target indoor SC/SH (IC6) °C

Target indoor SC/SH (IC7) °C

Target indoor SC/SH (IC8) °C

Target indoor SC/SH (IC9) °C

Target indoor SC/SH (IC10) °C

Target indoor SC/SH (IC11) °C

Target indoor SC/SH (IC12) °C

12345678

No.

10001110

113

SW1 setting

01001110

114

11001110

00101110

10101110

115

116

117

11101110

01101110

118

119

°F

TH7 (Outdoor temp.)

TH4 (Td) °F

TH3 (Outdoor pipe) °F

TH6 (ET) °F

01011110

122

11011110

123

10011110

121

Hight pressure sensor (Pd) PSIG

00111110

10111110

124

125

TH8 (Power module) °F

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

IC6 LEV opening pulse abnormality delay

IC7 LEV opening pulse abnormality delay

IC8 LEV opening pulse abnormality delay

IC9 LEV opening pulse abnormality delay

01111110

00000001

10000001

01000001

11000001

00100001

10100001

01100001

11100001

00010001

126

128

129

130

131

132

133

134

135

136

IC10 LEV opening pulse abnormality delay

IC11 LEV opening pulse abnormality delay

IC12 LEV opening pulse abnormality delay

Actual frequency of abnormality delay

Fan step number at time of abnormailty delay

10010001

01010001

11010001

00110001

10110001

137

138

139

140

141

142

143

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

SW1 setting

12345678

01110001

11110001

10001001

01001001

11001001

00101001

10101001

01101001

11101001

00011001

10011001

01011001

11011001

00111001

10111001

01111001

111110 01

00000101

01010101

11010101

00110101

10110101

01110101

11110101

00001101

10001101

01001101

11001101

00101101

10101101

01101101

11101101

00011101

High-pressure sensor data at time of abnormality delay

kgf

OC SC (cooling) at time of abnormality delay °C

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

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

IC6 SC/SH at time of abnormality delay °C

IC7 SC/SH at time of abnormality delay °C

IC8 SC/SH at time of abnormality delay °C

IC9 SC/SH at time of abnormality delay °C

IC10 SC/SH at time of abnormality delay °C

IC11 SC/SH at time of abnormality delay °C

IC12 SC/SH at time of abnormality delay °C

ROM version monitor

ROM type

Check sum mode

IC1 LEV opening pulse at time of abnormality delay

IC2 LEV opening pulse at time of abnormality delay

IC3 LEV opening pulse at time of abnormality delay

IC4 LEV opening pulse at time of abnormality delay

IC5 LEV opening pulse at time of abnormality delay

IC6 LEV opening pulse at time of abnormality delay

IC7 LEV opening pulse at time of abnormality delay

IC8 LEV opening pulse at time of abnormality delay

IC9 LEV opening pulse at time of abnormality delay

IC10 LEV opening pulse at time of abnormality delay

IC11 LEV opening pulse at time of abnormality delay

IC12 LEV opening pulse at time of abnormality delay

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 version data of ROM

Display of ROM type

Display of check sum code of ROM

Display of opening pulse of indoor LEV

at time of abnormality

-99.9 – 999.9

0 – 2000

No.

Display mode Notes

OCH502C

Display of actual frequency at time of abnormality

OCH502C

Display of fan step number at time of abnormality

Display of data from high-pressure sensor at time of abnormality

Display of SC data at time of abnormality

Over

Voltage

Under

voltage

CT sensor

disconn-

ection

ACTM

Display on the LED1, 2 (display data)

23456

0 – FF (16progressive)

0 – 15

-99.9 – 999.9

error

-99.9 – 999.9

Display of data from high-pressure sensor,

all thermistors, and SC/SH at time of

abnormality

-99.9 – 999.9

Display of indoor unit capacity code

0 – 255

Display mode Notes

Fan step number at time of abnormality

High-pressure sensor data at time of abnormality

OC SC (cooling) at time of abnormality

4420 Error history

TH4 sensor data at time of abnormality

Actual frequency of abnormality

11011101

00111101

188

10111101

189

10011101

185

01011101

186

187

12345678

SW1 setting

No.

TH6 sensor data at time of abnormality

11111101

01111101

190

191

TH3 sensor data at time of abnormality

TH8 sensor data at time of abnormality

IC1 SC/SH at time of abnormality

IC2 SC/SH at time of abnormality

IC3 SC/SH at time of abnormality

IC4 SC/SH at time of abnormality

IC5 SC/SH at time of abnormality

IC6 SC/SH at time of abnormality

IC7 SC/SH at time of abnormality

IC8 SC/SH at time of abnormality

00000011

192

10000011

193

01000011

194

11000011

195

00100011

196

10100011

197

01100011

198

11100011

199

00010011

200

10010011

201

IC9 SC/SH at time of abnormality

IC10 SC/SH at time of abnormality

IC11 SC/SH at time of abnormality

IC12 SC/SH at time of abnormality

IC6 Capacity code

IC7 Capacity code

IC8 Capacity code

IC9 Capacity code

IC10 Capacity code

01010011

202

11010011

203

00110011

204

10110011

205

11001011

00101011

211

212

213

11101011

01101011

10101011

214

215

IC11 Capacity code

IC12 Capacity code

00011011

10011011

216

217

Display of indoor SC/SH data

OCH502C

Display on the LED1, 2 (display data)

234 5 6

Display of opening pulse of indoor LEV

Display if detection data from each indoor

thermistor

Display mode Notes

IC6 SC/SH

01011011

12345678

SW1 setting

No.

218

-99.9 – 999.9

IC7 SC/SH

IC8 SC/SH

IC9 SC/SH

11011011

00111011

10111011

219

220

221

IC10 SC/SH

IC11 SC/SH

IC12 SC/SH

111110 11

01111011

00000111

222

223

224

IC6 LEV opening pulse

10000111

225

0 – 2000

IC7 LEV opening pulse

IC8 LEV opening pulse

IC9 LEV opening pulse

IC10 LEV opening pulse

IC11 LEV opening pulse

IC12 LEV opening pulse

IC6 TH23 (Gas) °C

01000111

226

11000111

227

00100111

228

10100111

229

01100111

230

1110 0111

231

00010111

232

IC7 TH23 (Gas) °C

IC8 TH23 (Gas) °C

IC9 TH23 (Gas) °C

IC10 TH23 (Gas) °C

11010111

01010111

234

235

00110111

236

10010111

233

IC11 TH23 (Gas) °C

IC12 TH23 (Gas) °C

IC6 TH22 (Liquid) °C

IC7 TH22 (Liquid) °C

IC8 TH22 (Liquid) °C

11110 111

0111 0111

10110111

237

238

239

00001111

240

10001111

241

-99.9 – 999.9

IC9 TH22 (Liquid) °C

IC10 TH22 (Liquid) °C

IC11 TH22 (Liquid) °C

IC12 TH22 (Liquid) °C

IC6 TH21 (Intake) °C

01001111

242

110 01111

243

00101111

244

10101111

245

01101111

246

IC7 TH21 (Intake) °C

IC8 TH21 (Intake) °C

IC9 TH21 (Intake) °C

IC10 TH21 (Intake) °C

IC11 TH21 (Intake) °C

1110 1111

247

00011111

248

10011111

249

01011111

250

110 11111

251

IC12 TH21 (Intake) °C

00 111111

252

(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.

30 A 30 mA 0.1 sec. or less

40 A 35 A 40 A

Indoor Unit

Main Cable**

Minimum Wire Thickness

(mm

[AWG])

Breaker for Current

Leakage

Refer to installation manual of indoor unit.

Minimum

circuit

ampacity

Maximum rating

of over current

protector device

Model Outdoor Unit

P60

5.3 [AWG10]

Breaker

for

Wiring*

Ground ~/N (single), 60Hz 208/230V ~/N (single), 60Hz 208/230V

Power Supply

OCH502C

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.

9-1. OVERVIEW OF POWER WIRING

9-2. WIRE DIAMETER AND MAIN POWER SWITCH CAPACITY

9-2-1. 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)

9-2-2. Power supply wire diameter and capacity

*A breaker with at least 3.0 mm contact separation in each poles shall be provided. Use earth leakage breaker (NV). **Use copper supply wires. Use the electric wires over the rating voltage 300V.

Outdoor unit

Indoor unit

Grounded

100

Grounded

Pull box

Mitsubishi PUMY-P60NKMU, PUMY-P60NKMU-BS Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual