Mitsubishi PUMY-P125VKM3-BS, PUMY-P140YKM3, PUMY-P112YKM3-BS, PUMY-P140VKM3-BS, PUMY-P140YKM3-BS Technical & Service Manual

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TECHNICAL & SERVICE MANUAL

OUTDOOR UNIT

HFC

utilized

R410A

March 2017

Note:

•

This service manual describes technical data of the outdoor units only.

<Outdoor unit> [Model Name]

Model name indication

PARTS CATALOG (OCB632)

PUMY-P112VKM3

PUMY-P125VKM3

PUMY-P140VKM3

PUMY-P112YKM3

PUMY-P125YKM3

PUMY-P140YKM3

PUMY-P112VKM3-BS

PUMY-P125VKM3-BS

PUMY-P140VKM3-BS

PUMY-P112YKM3-BS

PUMY-P125YKM3-BS

PUMY-P140YKM3-BS

Salt proof model

PUMY-P112VKM3

PUMY-P125VKM3

PUMY-P140VKM3

PUMY-P112YKM3 PUMY-P112YKME3

PUMY-P125YKM3 PUMY-P125YKME3

PUMY-P140YKM3 PUMY-P140YKME3

PUMY-P112VKM3-BS

PUMY-P125VKM3-BS

PUMY-P140VKM3-BS

PUMY-P112YKM3-BS PUMY-P112YKME3-BS

PUMY-P125YKM3-BS PUMY-P125YKME3-BS

PUMY-P140YKM3-BS PUMY-P140YKME3-BS

[Service Ref.]

CONTENTS

1. SAFETY PRECAUTION

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

2. OVERVIEW OF UNITS

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

3. SPECIFICATIONS

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

4. DATA

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

5. OUTLINES AND DIMENSIONS

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

6. WIRING DIAGRAM

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

NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION

.......

8. TROUBLESHOOTING

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

9. ELECTRICAL WIRING

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

132

10. REFRIGERANT PIPING TASKS

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

139

11. DISASSEMBLY PROCEDURE

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

146

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

No. OCH632

REVISED EDITION-A

Revision:

•

Modified the "Ratio of power input" graph for cooling in "4-2. CORRECTION BY TEMPERATURE" in REVISED EDITION-A.

•

Some other descriptions have been also modified.

OCH632 is void.

Cautions for units utilizing refrigerant R410A

1-1. CAUTIONS RELATED TO NEW REFRIGERANT

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

OCH632A

Unit

Electronic weighing scale

[3] Service tools

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

[1] Cautions for service

(1) Perform service after recovering the refrigerant left in unit completely. (2) Do not release refrigerant in the air. (3) After completing service, charge the cycle with specified amount of refrigerant. (4) If moisture or foreign matter might have entered the refrigerant piping during service, ensure to remove them.

[2] Additional refrigerant charge

When charging directly from cylinder

(1) Check that cylinder for R410A on the market is a syphon type. (2) Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)

Although "-BS" model has been designed to be resistant to salt damage, observe the following precautions to maintain the performance of the unit. (1) Avoid installing the unit in a location where it will be exposed directly to seawater or sea breeze. (2) If the cover panel may become covered with salt, be sure to install the unit in a location where the salt will be washed away

by rainwater. (If a sunshade is installed, rainwater may not clean the panel.)

(3) To ensure that water does not collect in the base of the outdoor unit, make sure that the base is level, not at angle. Water

collecting in the base of the outdoor unit could cause rust. (4) If the unit is installed in a coastal area, clean the unit with water regularly to remove any salt build-up. (5) If the unit is damaged during installation or maintenance, be sure to repair it. (6) Be sure to check the condition of the unit regularly. (7) Be sure to install the unit in a location with good drainage.

1-2. PRECAUTIONS FOR SALT PROOF TYPE "-BS" MODEL

No.

Tool name Specifications

Gauge manifold · Only for R410A

· Use the existing fitting

specifications

. (UNF1/2)

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

Charge hose · Only for R410A

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

Electronic weighing 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)

· Cylinder with syphon

Refrigerant recovery equipment

—

OCH632A

Cautions for refrigerant piping work

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

1 Thickness of pipes

Because the working pressure of R410A is higher compared to R22, be sure to use refrigerant piping with thickness shown below. (Never use pipes of 0.7 mm 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 strength, 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 strength as shown below. Set copper pipe correctly referring to copper pipe flaring dimensions for R410A below. For 1/2 and 5/8 inch pipes, the dimension B changes. Use torque wrench corresponding to each dimension.

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

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 (in)

Diagram below: Piping diameter and thickness

Outside

diameter

(mm)

Thickness

(mm)

R410A R22

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 (in)

Flare cutting dimensions

Outside

diameter

Dimension A

( )

-0.4

(mm)

R410A R22

(mm)

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 (in)

Flare nut dimensions

Outside

diameter

Dimension B

(mm)

R410A R22

(mm)

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

Tool exclusive for R410A

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

(Usable if equipped with adopter 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 adopter 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.

Dimension A

Dimension B

OCH632A

2-1. UNIT CONSTRUCTION

Remote

controller

Name

Model number

Functions

M-NET remote controller

PAR-F27MEA-E,

PAR-U02MEDA

• A handy remote controller for use in

conjunction

with the Melans centralized

management system.

• Addresses must be set.

• Addresses setting is not necessary.

MA remote controller

PAR-21MAA, PAR-31/32MAA PAR-W21MAA(when using PWFY)

Outdoor unit

Capacity

1 to 9 unit

50 to 130% of outdoor unit capacity

*2 *3

Type 15 to Type 140

1 to 10 unit

Applicable indoor unit

Number of units

Total system wide capacity

4HP 5HP 6HP

PUMY-P112VKM3(-BS) PUMY-P112YKM(E)3(-BS)

PUMY-P125VKM3(-BS) PUMY-P125YKM(E)3(-BS)

1 to 12 unit

PUMY-P140VKM3(-BS) PUMY-P140YKM(E)3(-BS)

Branching pipe components

Branch header (2 branches)

Branch header (4 branches)

Branch header (8 branches)

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

*1. PUMY is connectable to Fresh Air type indoor unit.

It is possible to connect 1 Fresh Air type indoor unit to 1 outdoor unit. (1:1 system) Operating temperature range (outdoor temperature) for fresh air type indoor units differ from other indoor units. Refer to "2-4-(3). Operating temperature range". *2. When the indoor unit of Fresh Air type is connected with the outdoor unit, the maximum connectable total indoor unit capacity is 110% (100% incaseofheatingbelow−5:. *3. When connecting PWFY series (Note that the connection is not allowed inside EU countries.)

•Only1PWFY-P100VM-E-AUcanbeconnected.PWFY-P200VM-E-AUandPWFY-P100VM-E-BUcannotbeconnected.

•ThePWFYunitcannotbetheonlyunitconnectedtoanoutdoorunit.Selectanindoorunitsothatthetotalratedcapacityoftheindoor

units, excluding the PWFY unit, is 50 to 100% of the outdoor unit capacity.

*4.

When connecting the CONNECTION KIT (PAC-LV11M-J) and an M-series indoor unit, refer to the installation manual for the CONNECTION KIT.

*5. Authorized connectable indoor units are as follows; PUMY-P112: PEFY-P25VMA3-E × 2 + PEFY-P32VMA3-E × 2 PUMY-P125: PEFY-P32VMA3-E × 4 PUMY-P140: PEFY-P32VMA3-E × 3 + PEFY-P40VMA3-E × 1 *6. Do not connect Lossnay remote controller(s). (PZ-61DR-E, PZ-60DR-E, PZ-52SF-E, PZ-43SMF-E)

Decorative panel

OVERVIEW OF UNITS

M series remote

controller

Model

Capacity

Cassette Ceiling

Ceiling

Concealed

Wall

Mounted

Ceiling

Suspended

Floor standing Ceiling concealed

Lossnay

Air to Water

unit

CONNECTION KIT

2 by 2 4-way ow 2-way ow

1-way ow

Exposed

Concealed Fresh air

Built-in

PAC-LV11M-J

PLFY-P PLFY-P PLFY-P

PMFY-P

PEFY-P

PKFY-P

PCFY-P PFFY-P PFFY-P PEFY-P PDFY GUF*6PWFY-P

15VFM-E1

– – –

15VMS1(L)-E

15VBM-E

– – – – – – –

20VFM-E1

20VBM-E 20VLMD-E 20VBM-E

20VMS1(L)-E

20VMA(L)-E

20VMR-E-L/R

20VBM-E

–

20VLEM-E 20VKM-E2

20VLRM-E 20VLRMM-E

– 20VM-E – –

25VFM-E1

25VBM-E 25VLMD-E 25VBM-E

25VMS1(L)-E

25VMA(L)-E

25VMR-E-L/R

25VMA3-E

25VBM-E

–

25VLEM-E 25VKM-E2

25VLRM-E 25VLRMM-E

– 25VM-E – –

32VFM-E1

32VBM-E 32VLMD-E 32VBM-E

32VMS1(L)-E

32VMA(L)-E

32VMR-E-L/R

32VMA3-E

32VHM-E

–

32VLEM-E 32VKM-E2

32VLRM-E 32VLRMM-E

– 32VM-E – –

40VFM-E1

40VBM-E 40VLMD-E 40VBM-E

40VMS1(L)-E

40VMA(L)-E

40VMH-E

40VMA3-E

40VHM-E 40VKM-E

40VLEM-E 40VKM-E2

40VLRM-E 40VLRMM-E

– 40VM-E – –

M series indoor unit

MSZ-GE Series MSZ-SF Series MSZ-EF Series MSZ-FH Series MFZ-KJ Series

50VFM-E1

50VBM-E 50VLMD-E

–

50VMS1(L)-E

50VMA(L)-E

50VMH-E

50VHM-E

–

50VLEM-E

50VLRM-E 50VLRMM-E

– 50VM-E

50RD(H)4

–

63VBM-E 63VLMD-E

–

63VMS1(L)-E

63VMA(L)-E

63VMH-E

63VKM-E 63VKM-E

63VLEM-E

63VLRM-E 63VLRMM-E

– 63VM-E – –

– –

71VMA(L)-E

71VMH-E

– – – – – 71VM-E – –

–

80VBM-E 80VLMD-E

–

80VMA(L)-E

80VMH-E

– – – –

80VMH-E-F

80VM-E –

100

–

100VBM-E

100VLMD-E

–

100VMA(L)-E

100VMH-E

100VKM-E 100VKM-E

–

– 100VM-E

100RD(H)4

100VM-E1-AU 100VM-E2-AU

125

–

125VBM-E

125VLMD-E

–

125VMA(L)-E

125VMH-E

–

125VKM-E

–

– 125VM-E

–

140

– – –

–

140VMA(L)-E

140VMH-E

– – –

– 140VMH-E-F

– –

OCH632A

PUMY-P125VKM3(-BS) PUMY-P125YKM(E)3(-BS)

PUMY-P140VKM3(-BS) PUMY-P140YKM(E)3(-BS)

6HP

PUMY-P112VKM3(-BS) PUMY-P112YKM(E)3(-BS)

4HP

Applicable indoor unit

Branch box that can be connected

Capacity

Number of units Total system wide capacity*

Type 15 to Type 100

2 to 8 units

1 to 2 units

24 to 130 % of outdoor unit capacity

(3.0 to 16.2 kW)

Number of units

Outdoor unit

Ceiling concealed

4-way ceiling cassette

Wall mounted

Model type

Model name

Deluxe Standard

Compact Low static pressure Middle static pressure

2 by 2 type

Standard

MSZ-FH25/35/50VE2 MSZ-SF25/35/42/50VE3 MSZ-GF60/71VE MSZ-EF18/22/25/35/42/50VE3 MSZ-SF15/20VA SEZ-KD25/35/50/60/71VAQ(L) PEAD-RP50/60/71/100JA(L)Q SLZ-KF25/35/50VA2 PLA-ZRP35/50/60/71/100BA PLA-RP35/50/60/71/100EA PCA-RP35/50/60/71/100KAQ MFZ-KJ25/35/50VE2 MLZ-KA25/35/50VA

Floor standing

Capacity class (kW)

2.2 2.5 3.5 5.0 6.0 7.1 8.0

10.0

Connectable indoor unit lineup (Heat pump inverter type)

Note: The lineup of a connectable indoor unit depends on a district/areas/country.

Branch box

PAC-MK51/52BC(B)

5 branches

(MAX. 5 units)

PAC-MK31/32BC(B)

3 branches

(MAX. 3 units)

Number of branches Indoor unit that can be connected

( )

Notes: 1. A maximum of 2 branch boxes can be connected to 1 outdoor unit.

2. When connecting a Cylinder unit or a Hydrobox, use a PAC-MK32/52BC(B) branch box.

Select a model according to the connection method.

2- branch pipe (joint): Optional parts

In case of using 1- branch box

In case of using 2- branch boxes

No need

Model name

Connection method

flare

brazing

MSDD-50AR-E MSDD-50BR-E

Option

Optional accessories of indoor units and outdoor units are available.

2.01.5

1.8

4.2

1-way ceiling cassette

5HP

21 to 130 % of outdoor unit capacity

(3.0 to 18.2 kW)

19 to 130 % of outdoor unit capacity

(3.0 to 20.2 kW)

Ceiling suspended

Model type Cylinder unit Hydrobox

Connectable ecodan unit

Model name EHST20C series (except EHST20C-MEC) EHSC series (except EHSC-MEC)

Note: Only 1 Cylinder unit or Hydrobox can be connected.

When connecting ecodan unit(s), the total capacity of connected Air to Air indoor units is up to 130% of the outdoor unit. (Air to Air 130% + ecodan). However, when operating Air to Air indoor unit(s) in heating mode and ecodan unit(s) in DHW or heating mode at the same time, the total capacity of connected Air to Air units is below:

· PUMY-P112: 1.3 kW

· PUMY-P125: 2.8 kW

· PUMY-P140: 4.3 kW

However, the following combinations can be connected:

· PUMY-P112: MSZ-SF15VA × 1

· PUMY-P125: MSZ-SF15VA × 2

· PUMY-P140: MSZ-SF15VA × 3

2-2. UNIT CONSTRUCTION (BRANCH BOX SYSTEM)

OCH632A

PUMY-P125VKM3(-BS) PUMY-P125YKM(E)3(-BS)

PUMY-P140VKM3(-BS) PUMY-P140YKM(E)3(-BS)

Via branch box Citymulti indoor

PUMY-P112VKM3(-BS) PUMY-P112YKM(E)3(-BS)

Applicable indoor unit

Capacity

Number of units*

Via branch box Citymulti indoor

7 or 8*

Outdoor unit

PAC-MK51/52BC(B)

5 branches

(MAX. 5 units)

PAC-MK31/32BC(B)

3 branches

(MAX. 3 units)

Branch box Number of branches

City multi indoor unit Via branch box

Type 15 to Type 140

Type 15 to Type 100

1-branch box 2-branch box

Via branch box Citymulti indoor

3 or 2*

5 8

5 3

5 8

5 3

Total system wide capacity*

6.3 to 16.2 kW 7.1 to 18.2 kW 8.0 to 20.2 kW 50 to 130% of outdoor unit capacity

Branching pipe components

CMY-Y62-G-E

Branch header

(2 branches)

CMY-Y64-G-E

Branch header

(4 branches)

CMY-Y68-G-E

Branch header

(8 branches)

Citymulti indoor units*

CONNECTION KIT

PAC-LV11M-J

M series indoor unit

remote

controller

M series

remote

controller

M series S series P series indoor units*

Cylinder unit Hydrobox

remote

controller

*2 When connecting 7 indoor units via branch box, connectable citymulti indoor units are 3; connecting 8 indoor units via branch box, connectable citymulti indoor units are 2.

Refer to “2-1. UNIT CONSTRUCTION” or “2-2. UNIT CONSTRUCTION (BRANCH BOX SYSTEM)”, for more detail.

When connecting ecodan unit, the total capacity of connected Air to Air indoor units is up to 130% of the outdoor unit. (Air to Air 130% + ecodan). However, when operating Air to Air indoor unit(s) in heating mode and ecodan unit in DHW or heating mode at the same time, the maximum connectable Air to Air indoor unit is below.

2-3. UNIT CONSTRUCTION (MIXED SYSTEM)

Model ATA total capacity

Can be exceptionally

connected

PUMY-P112 1.3 kW MSZ-SF15VE × 1

PUMY-P125 2.8 kW MSZ-SF15VE × 2

PUMY-P140 4.3 kW MSZ-SF15VE × 3

OCH632A

2-4. UNIT SPECIFICATIONS

(2) Method for identifying MULTI-S model

(1) Outdoor Unit

Outdoor unit <When using model 125 >

PU M Y - P 125 Y K M E 3 - BS

Refrigerant R410A

Indicates equivalent to Cooling capacity

Power supply

V: Single phase 220/230/240 V, 50 Hz

Y: 3-phase 380/400/415 V, 50 Hz 380 V, 60 Hz (YKM3 only)

Outdoor unit model type

M-NET control

Frequency conversion controller

Outdoor unit

MULTI-S

(kcal/ h)

Salt proof

type

sub number

Electrical box

Service Ref.

Capacity

Cooling (kW) Heating (kW)

12.5

14.0

2.9

14.0

16.0

3.5

15.5

18.0

3.9

Compressor (kW)

PUMY-P112VKM3(-BS) PUMY-P112YKM(E)3(-BS)

PUMY-P125VKM3(-BS) PUMY-P125YKM(E)3(-BS)

PUMY-P140VKM3(-BS) PUMY-P140YKM(E)3(-BS)

Cooling/Heating capacity indicates the maximum value at operation under the following condition. *Cooling Indoor : D.B. 27°C/W.B. 19.0°C

Outdoor : D.B. 35°C

Heating Indoor : D.B. 20°C

Outdoor : D.B. 7°C/W.B. 6°C

(3) Operating temperature range

Notes: D.B. : Dry Bulb Temperature W.B. : Wet Bulb Temperature

10 to 52°C D.B. : When connecting PKFY-P15/P20/P25VBM, PFFY-P20/25/32VKM, PFFY-P20/25/32VLE(R)M, PEFY-P25/32/40VMA3-E;

and M series, S series, and P series type indoor unit.

Cooling W.B. 15 to 24°C

D.B. −5 to 52°C

Heating D.B. 15 to 27°C

W.B. −20 to 15°C

Indoor-side intake air temperature

Outdoor-side intake air temperature

■

When connecting fresh air type indoor unit

air type indoor

Capacity of Fresh

Cooling

Heating

Indoor-side and Outdoor-side

P80

D.B. 21 to 43:

W.B. 15.5 to 35:

D.B.−10 to 20:

intake air temperature

P140

D.B. 21 to 43:

W.B. 15.5 to 35:

D.B. −5 to 20:

*2 Thermo-OFF (FAN-mode) automatically starts if the outdoor temp. is lower than 21 : D.B.. *

Thermo-OFF (FAN-mode) automatically starts if the outdoor temp. is higher than 20 : D.B..

■ When connecting PWFY unit

Cooling

Heating

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

• PWFY series can operate in Heating mode but not in Cooling mode. An indoor unit other than that of PWFY series can

operate in Cooling mode.

• A PWFY series and other series cannot operate simultaneously.

• The operation of PWFY series takes precedence over other series. While a PWFY series is operating, other series do not operate.

• The set temperature on the remote controller represents the target temperature of the outlet water.

D.B. 10 to 45:

W.B. −20 to 15:

OCH632A

■ When connecting Cylinder unit or Hydrobox

*5 ATA unit: Air to Air unit (other than PWFY, Cylinder unit or Hydrobox) *

Cylinder unit and Hydrobox can not operate Cooling mode in connecting PUMY. *7 When outdoor temp. is less than 7:, outlet water temp. is lowered (Refer to Figure 1). Furthermore, outlet air temperature is lowered.

Cooling

—

Outlet water temperature

Outdoor temperature

DHW only

ATW Heating only

DHW + ATA Heating

ATW Heating + ATA Heating

−20 to 35:

−20 to 21:

7 to 35:

−10 to 35:

55: Max. 55: Max. 55: Max. 45 to 55: Max.

-10 -5 0 5 10 15

Outdoor temp. [°CDB]

Max. outlet water temp. [°C]

Figure 1 Temperature change of max. outlet water temp. according to outdoor temperature

OCH632A

SPECIFICATIONS

Model PUMY-P112VKM3(-BS) PUMY-P125VKM3(-BS) PUMY-P140VKM3(-BS) Power source

1-phase 220/230/240 V, 50 Hz; 1-phase 220 V, 60 Hz

Cooling capacity (Nominal)

kW*

12.5 14.0 15.5

kcal/h*

10,750 12,040 13,330

BTU/h*

42,650 47,768 52,886 Power input kW 2.79 3.46 4.52 Current input A 12.87/12.32/11.80, 12.87 15.97/15.27/14.64, 15.97 20.86/19.95/19.12, 20.86 COP kW/kW 4.48 4.05 3.43

Temp. range of cooling

Indoor temp. W.B. 15 to 24°C Outdoor temp. D.B. −5to52°C

*3, *4

Heating capacity (Nominal)

kW*

14.0 16.0 18.0

kcal/h*

12,040 13,760 15,480

BTU/h*

47,768 54,592 61,416 Power input kW 3.04 3.74 4.47 Current input A 14.03/13.42/12.86, 14.03 17.26/16.51/15.82, 17.26 20.63/19.73/18.91, 20.63 COP kW/kW 4.61 4.28 4.03

Temp. range of heating

Indoor temp. D.B. 15 to 27°C Outdoor temp. W.B. −20to15°C

Indoor unit connectable

Total capacity 50 to 130% of outdoor unit capacity Model/ Quantity Citymulti 15 - 140/9 15 - 140/10 15 - 140/12

Branch box 15 - 100/8 15 - 100/8 15 - 100/8 Mixed system

15 - 140*5/10 15 - 140*5/10*

15 - 140*5/10*

Sound pressure level (measured in anechoic room)

dB <A>

49/51 50/52 51/53

Power pressure level (measured in anechoic room)

dB <A>

69/71 70/72 71/73

Refrigerant piping diameter

Liquid pipe mm (inch) 9.52 (3/8) Gas pipe mm (inch) 15.88 (5/8)

FAN *2 Type × Quantity Propeller Fan x 2

Airowrate m³/min 110

L/s 1,833

cfm 3,884 Control, Driving mechanism DC control Motor output kW 0.06+0.06 External static press. 0

Compressor Type × Quantity Scroll hermetic compressor x 1

Manufacture Mitsubishi Electric Corporation Starting method Inverter Capacity control % Cooling 26 to 100

Heating 20 to 100

Cooling 24 to 100 Heating 18 to 100

Cooling 21 to 100

Heating 17 to 100 Motor output kW 2.9 3.5 3.9 Case heater kW 0 Lubricant FV50S (2.3litter)

Externalnish Galvanized Steel Sheet Munsell No. 3Y 7.8/1.1 External dimension H × W × D mm 1,338 × 1,050 × 330(+25)

inch 52-11/16 × 41-11/ 32 × 13 (+1)

Protection devices

High pressure protection High pressure Switch Inverter circuit (COMP./FAN)

Overcurrent detection, Overheat detection(Heat sink thermistor)

Compressor Compressor thermistor, Overcurrent detection Fan motor Overheating, Voltage protection

Refrigerant Type × original charge R410A 4.8 kg

Control Electronic expansion valve

Net weight kg (lb) 122 (269) Heat exchanger Cross Fin and Copper tube HIC circuit (HIC: Heat Inter-Changer) HIC circuit Defrosting method Reversed refrigerant circuit Drawing External BK01N346

Wiring BH78B813

Standard attachment

Document Installation Manual Accessory Grounded lead wire x2

Optional parts Joint: CMY-Y62-G-E, Header: CMY-Y64/68-G-E, Branch box: PAC-MK31/32/51/52BC(B) Remarks

Unit converter

kcal/h = kW × 860 BTU/h = kW × 3,412 cfm = m³/min × 35.31 lb = kg/0.4536

Abovespecicationdatais

subject to rounding variation.

*1 Nominal cooling conditions *2 Nominal heating conditions

Indoor :

27°C D.B./19°C W.B. [81°F D.B/66°F W.B.]

20°C D.B. [68°F D.B.]

Outdoor : 35°C D.B. [95°F D.B.]

7°C DB/6°C W.B. [45°F D.B./43°F W.B.]

Pipe length : 7.5 m [24-9/16 ft] 7.5 m [24-9/16 ft]

Level difference : 0 m [0 ft] 0 m [0 ft]

Notes : 1. Nominal conditions *

, *2 are subject to ISO 15042.

 2.Duetocontinuingimprovement,abovespecicationsmaybesubjecttochangewithoutnotice.

*3 10 to 52:D.B. [50 to 126_F D.B.], when connecting following models: PKFY-P15/20/25VBM, PFFY-P20/25/32VLE(R)M, PFFY-

P20/25/32VKM, PEFY-P25/32/40VMA3; and M series, S series, and P series type indoor unit.

*4−15to52:D.B. [50 to 126_F D.B.], when using an optional air protect guide [PAC-SH95AG-E]. However, this condition does not

apply to the indoor unit listed in *3.

Up to P100 when connecting via branch box.

Up to 11 units when connecting via 2 branch boxes.

OCH632A

Model PUMY-P112YKM3(-BS) PUMY-P125YKM3(-BS) PUMY-P140YKM3(-BS) Power source 3-phase 380/400/415 V, 50 Hz; 3-phase 380 V, 60 Hz Cooling capacity

(Nominal)

kW *

12.5 14.0 15.5

kcal/h *

10,750 12,040 13,330

BTU/h *

42,650 47,768 52,886 Power input kW 2.79 3.46 4.52 Current input A 4.99/4.74/4.57, 4.99 5.84/5.55/5.35, 5.84 7.23/6.87/6.62, 7.23 COP kW/kW 4.48 4.05 3.43

Temp. range of cooling

Indoor temp. W.B.

15 to 24°C

Outdoor temp. D.B. −5to52°C

*3, *4

Heating capacity (Nominal)

kW *

14.0 16.0 18.0

kcal/h *

12,040 13,760 15,480

BTU/h *

47,768 54,592 61,416 Power input kW 3.04 3.74 4.47 Current input A 5.43/5.16/4.98, 5.43 6.31/6.00/5.78, 6.31 7.15/6.79/6.55, 7.15 COP kW/kW 4.61 4.28 4.03

Temp. range of heating

Indoor temp. D.B. 15 to 27°C Outdoor temp. W.B. −20to15°C

Indoor unit connectable

Total capacity 50 to 130% of outdoor unit capacity Model/Quantity Citymulti 15 - 140/9 15 - 140/10 15 - 140/12

Branch box 15 - 100/8 15 - 100/8 15 - 100/8 Mixed system

15 - 140*5/10 15 - 140*5/10*

15 - 140*5/10*

Sound pressure level (measured in anechoic room)

dB <A>

49/51 50/52 51/53

Power pressure level (measured in anechoic room)

dB <A>

69/71 70/72 71/73

Refrigerant piping diameter

Liquid pipe mm (inch) 9.52 (3/8) Gas pipe mm (inch) 15.88 (5/8)

FAN *2 Type × Quantity Propeller Fan × 2

Airowrate K/min 110

L/s 1,833

cfm 3,884 Control, Driving mechanism DC control Motor output kW 0.06+0.06 External static press. 0

Compressor Type x Quantity Scroll hermetic compressor × 1

Manufacture Mitsubishi Electric Corporation Starting method Inverter Capacity control % Cooling 26 to 100

Heating 20 to 100

Cooling 24 to100

Heating 18 to 100

Cooling 21 to 100

Heating 17 to 100 Motor output kW 2.9 3.5 3.9 Case heater kW 0 Lubricant FV50S(2.3litter)

Externalnish Galvanized Steel Sheet Munsell No. 3Y 7.8/1.1 External dimension H × W × D mm 1338 × 1050 × 330(+25)

inch 52-11/16 × 41-11/32 × 13 (+1)

Protection devices

High pressure protection High pressure Switch Inverter circuit (COMP./FAN) Overcurrent detection, Overheat detection(Heat sink thermistor) Compressor Compressor thermistor, Over current detection Fan motor Overheating, Voltage protection

Refrigerant Type × original charge R410A 4.8 kg

Control

Electronic expansion valve Net weight kg (lb) 125 (276) Heat exchanger Cross Fin and Copper tube HIC circuit (HIC: Heat Inter-Changer) HIC circuit Defrosting method Reversed refrigerant circuit Drawing External BK01N339

Wiring BH78B814

Standard attachment

Document Installation Manual Accessory Grounded lead wire x2

Optional parts

Joint: CMY-Y62-G-E, Header: CMY-Y64/68-G-E, Branch box: PAC-MK31/32/51/52BC(B)

Unit converter

kcal/h = kW × 860 BTU/h = kW × 3,412 cfm = m³/min × 35.31 lb = kg/0.4536

Abovespecicationdatais

subject to rounding variation

*1 Nominal cooling conditions *2 Nominal heating conditions

Indoor :

27°C D.B./19°C W.B. [81°F D.B/66°F W.B.]

20°C D.B. [68°F D.B.]

Outdoor : 35°C D.B. [95°F D.B.]

7°C DB/6°C W.B. [45°F D.B./43°F W.B.]

Pipe length : 7.5 m [24-9/16 ft] 7.5 m [24-9/16 ft]

Level difference : 0 m [0 ft] 0 m [0 ft]

Remarks:

Notes : 1. Nominal conditions *

, *2 are subject to ISO 15042.

 2.Duetocontinuingimprovement,abovespecicationsmaybesubjecttochangewithoutnotice.

*3 10 to 52:D.B. [50 to 126_F D.B.], when connecting following models: PKFY-P15/20/25VBM, PFFY-P20/25/32VLE(R)M, PFFY-

P20/25/32VKM, PEFY-P25/32/40VMA3; and M series, S series, and P series type indoor unit.

*4−15to52:D.B. [50 to 126_F D.B.], when using an optional air protect guide [PAC-SH95AG-E]. However, this condition does not

apply to the indoor unit listed in *3.

Up to P100 when connecting via branch box.

Up to 11 units when connecting via 2 branch boxes.

OCH632A

Model PUMY-P112YKME3(-BS) PUMY-P125YKME3(-BS) PUMY-P140YKME3(-BS) Power source 3-phase 380/400/415 V, 50 Hz Cooling capacity

(Nominal)

kW*

12.5 14.0 15.5

kcal/h*

10,750 12,040 13,330

BTU/h*

42,650 47,768 52,886 Power input kW 2.79 3.46 4.52 Current input A 4.46/4.24/4.09 5.53/5.26/5.07 7.23/6.87/6.62 COP kW/kW 4.48 4.05 3.43

Temp. range of cooling

Indoor temp. W.B. 15 to 24°C Outdoor temp. D.B. −5to52°C

*3, *4

Heating capacity (Nominal)

kW*

14.0 16.0 18.0

kcal/h*

12,040 13,760 15,480

BTU/h*

47,768 54,592 61,416 Power input kW 3.04 3.74 4.47 Current input A 4.86/4.62/4.45 5.98/5.68/5.48 7.15/6.79/6.55 COP kW/kW 4.61 4.28 4.03

Temp. range of heating

Indoor temp. D.B. 15 to 27°C Outdoor temp. W.B. −20to15°C

Indoor unit connectable

Total capacity 50 to 130% of outdoor unit capacity Model/Quantity Citymulti 15 - 140/9 15 - 140/10 15 - 140/12

Branch box 15 - 100/8 15 - 100/8 15 - 100/ 8 Mixed system

15 - 140*

/10 15 - 140*5/10*

15 - 140*5/10*

Sound pressure level (measured in anechoic room)

dB <A>

49/51 50/52 51/ 53

Power pressure level (measured in anechoic room)

dB <A>

69/71 70/72 71/73

Refrigerant piping diameter

Liquid pipe mm (inch) 9.52 (3/8) Gas pipe mm (inch) 15.88 (5/8)

FAN *2 Type × Quantity Propeller Fan × 2

Airowrate K/min 110

L/s 1,833

cfm 3,884 Control, Driving mechanism DC control Motor output kW 0.06+0.06 External static press. 0

Compressor Type × Quantity Scroll hermetic compressor × 1

Manufacture Mitsubishi Electric Corporation Starting method Inverter Capacity control % Cooling 26 to 100

Heating 20 to 100

Cooling 24 to 100 Heating 18 to 100

Cooling 21 to 100

Heating 17 to 100 Motor output kW 2.9 3.5 3.9 Case heater kW 0 Lubricant FV50S(2.3litter)

Externalnish Galvanized Steel Sheet Munsell No. 3Y 7.8/1.1 External dimension HxWxD mm 1,338 × 1,050 × 330(+25)

inch 52-11/16 × 41-11/32 × 13 (+1)

Protection devices

High pressure protection High pressure Switch Inverter circuit (COMP./FAN)

Overcurrent detection, Overheat detection(Heat sink thermistor)

Compressor Compressor thermistor, Over current detection Fan motor Overheating, Voltage protection

Refrigerant Type × original charge R410A 4.8kg

Control Electronic expansion valve

Net weight kg (lb) 136 (300) Heat exchanger Cross Fin and Copper tube HIC circuit (HIC: Heat Inter-Changer) HIC circuit Defrosting method Reversed refrigerant circuit Drawing External BK01N339

Wiring BH78J358

Standard attachment

Document Installation Manual Accessory Grounded lead wire x2

Optional parts Joint: CMY-Y62-G-E, Header: CMY-Y64/68-G-E, Branch box: PAC-MK31/32/51/52BC(B) Remarks

Unit converter

kcal/h = kW × 860 BTU/h = kW × 3,412 cfm = m³/min × 35.31 lb = kg/0.4536

Abovespecicationdatais

subject to rounding variation.

*1 Nominal cooling conditions *2 Nominal heating conditions

Indoor :

27°C D.B./19°C W.B. [81°F D.B/66°F W.B.]

20°C D.B. [68°F D.B.]

Outdoor : 35°C D.B. [95°F D.B.]

7°C DB/6°C W.B. [45°F D.B./43°F W.B.]

Pipe length : 7.5 m [24-9/16 ft] 7.5 m [24-9/16 ft]

Level difference : 0 m [0 ft] 0 m [0 ft]

Notes : 1. Nominal conditions *

, *2 are subject to ISO 15042.

 2.Duetocontinuingimprovement,abovespecicationsmaybesubjecttochangewithoutnotice.

*3 10 to 52:D.B. [50 to 126_F D.B.], when connecting following models: PKFY-P15/20/25VBM, PFFY-P20/25/32VLE(R)M, PFFY-

P20/25/32VKM, PEFY-P25/32/40VMA3; and M series, S series, and P series type indoor unit.

*4−15to52:D.B. [50 to 126_F D.B.], when using an optional air protect guide [PAC-SH95AG-E]. However, this condition does not

apply to the indoor unit listed in *3.

Up to P100 when connecting via branch box.

Up to 11 units when connecting via 2 branch boxes.

OCH632A

Capacity of indoor unit

Model 20

Model Number for indoor unit

Model Capacity

2.2

Model 15

1.7

Model 25

2.8

Model 32

3.6

Model 40

4.5

Model 50

5.6

Model 63

7.1

Model 71

8.0

Model 80

9.0

Model 100

11.2

Model 125

14.0

Model 140

16.0

Model Capacity

2.01.5 2.2 2.5 3.5 4.2 5.0 6.0 7.1

P•FY Series

M Series S Series P Series

Model 20

Model Number for indoor unit

Model 15 Model 22 Model 25 Model 35 Model 42 Model 50 Model 60 Model 71

1.8

Model 18

8.0

Model 80

10.0

Model 100

DATA

Indoor Temperature [°CW.B.]

Ratio of cooling capacity

15 16 17 18 19 20 21 22 23 24

0.4

0.6

0.8

1.0

1.2

Design Condition

Outdoor Design Dry Bulb Temperature 40ºC Total Cooling Load 9.0 kW

Room1

Indoor Design Dry Bulb Temperature 27ºC Indoor Design Wet Bulb Temperature 20ºC Cooling Load 4.0 kW

Room2

Indoor Design Dry Bulb Temperature 24ºC Indoor Design Wet Bulb Temperature 18ºC Cooling Load 4.5 kW

<Other>

Indoor/Outdoor Equivalent Piping Length 100 m

1. Cooling Calculation

(1) Temporary Selection of Indoor Units

Room1

PEFY-P40 4.5 kW (Rated)

Room2

PEFY-P50 5.6 kW (Rated)

(2) Total Indoor Units Capacity

P40 + P50 = P90

(3) Selection of Outdoor Unit

The P112 outdoor unit is selected as total indoor units capacity is P90

PUMY-P112 12.5 kW

(4) Total Indoor Units Capacity Correction Calculation

Room1

Indoor Design Wet Bulb Temperature Correction (20ºC)

1.04 (Refer to Figure 1)

Figure 1

Indoor unit temperature correction

To be used to correct indoor unit only

Figure 2 Outdoor unit temperature correction

To be used to correct outdoor unit only

Figure 3

Correction of refrigerant piping length

Room2

Indoor Design Wet Bulb Temperature Correction (18ºC)

0.90 (Refer to Figure 1)

CTi = Σ (Indoor Unit Rating × Indoor Design Temperature Correction)

= 4.5 × 1.04 + 5.6 × 0.90

= 9.7 kW

(5) Outdoor Unit Correction Calculation

Outdoor Design Dry Bulb Temperature Correction (40ºC)

0.86 (Refer to Figure 2)

Piping Length Correction (160 m)

0.85 (Refer to Figure 3)

Total Outdoor Unit Capacity (CTo)

Total Indoor Units Capacity (CTi)

CTo = Outdoor Rating × Outdoor Design Temperature Correction × Piping Length Correction

= 12.5 × 0.86 × 0.85

= 9.14 kW

(6) Determination of Maximum System Capacity

Comparison of Capacity between Total Indoor Units Capacity (CTi) and Total Outdoor Unit Capacity (CTo)

CTi = 9.7 > CTo = 9.14, thus, select CTo. CTx = CTo = 9.14 kW

(7) Comparison with Essential Load

Against the essential load 9.0kW, the maximum system capacity is 9.14 kW: Proper outdoor units have been selected.

(8) Calculation of Maximum Indoor Unit Capacity of Each Room

CTx = CTo, thus, calculate by the calculation below

Room1

Maximum Capacity × Room1 Capacity after the Temperature Correction/(Room1,2 Total Capacity after the Temperature Correction

= 9.14 × (4.5 × 1.04)/(4.5 × 1.04 + 5.6 × 0.90)

= 4.4 kW

OK: fulfills the load 4.0 kW

Room2

Maximum Capacity × Room2 Capacity after the Temperature Correction/(Room1,2 Total Capacity after the Temperature Correction)

= 9.14 × (5.60 × 0.90)/(4.5 × 1.04 + 5.6 × 0.90)

= 4.7 kW OK: fulfills the load 4.5 kW

Go on to the heating trial calculation since the selected units fulfill the cooling loads of Room 1, 2.

Ratio of cooling capacity

°CD.B.

19°C W.B.

Indoor Temperature

Total capacity of indoor unit

Outdoor Temperature

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

−5 0 5 10 15 20 25 3 0 35

Cooling capacity correction factor

0.50

0.55

0.60

0.65

0.70

0.75

0.80

0.85

0.90

0.95

1.00

0 20 40 60 80 1 00 120 140 160

Piping equivalent length (m)

6.3

12.5

9.4

16.2

Note: If CTx = CTi, please refer to the <Heating> section to calculate the Maximum Indoor Unit Capacity of Each Room.

4-1. SELECTION OF COOLING/HEATING UNITS

OCH632A

Capacity of indoor unit

Model 20

Model Number for indoor unit

Model Capacity

2.5

Model 15

1.9

Model 25

3.2

Model 32

4.0

Model 40

5.0

Model 50

6.3

Model 63

8.0

Model 71

9.0

Model 80

10.0

Model 100

12.5

Model 125

16.0

Model 140

18.0

Model Capacity

2.31.7 2.5 2.9 4.0 4.8 5.7 6.9 8.1

P•FY Series

M Series S Series P Series

Model 20

Model Number for indoor unit

Model 15 Model 22 Model 25

Model 35

Model 42 Model 50 Model 60 Model 71

2.1

Model 18

9.3

Model 80

11.2

Model 100

Design Condition

Outdoor Design Wet Bulb Temperature 2ºC Total Heating Load 10.3 kW

Room1

Indoor Design Dry Bulb Temperature 21ºC Heating Load

4.8 kW

Room2

Indoor Design Dry Bulb Temperature 23ºC Heating Load

5.5 kW

<Other>

Indoor/Outdoor Equivalent Piping Length 100 m

2. Hea ting Calcula tion

(1) Temporary Selection of Indoor Units

Room1

PEFY-P40 5.0 kW (Rated)

Room2

PEFY-P50 6.3 kW (Rated)

(2) Total Indoor Units Capacity

P40 + P50 = P90

(3) Selection of Outdoor Unit

The P112 outdoor unit is selected as total indoor units capacity is P90

PUMY-P112 14.0 kW

(4) Total Indoor Units Capacity Correction Calculation

Room1

Indoor Design Dry Bulb Temperature Correction (21ºC)

0.96 (Refer to Figure 4)

Table 1 Table of correction factor at frost and defrost

Room2

Indoor Design Dry Bulb Temperature Correction (23ºC)

0.88 (Refer to Figure 4)

CTi = Σ (Indoor Unit Rating × Indoor Design Temperature Correction)

= 5.0 × 0.96 + 6.3 × 0.88

= 10.3 kW

(5) Outdoor Unit Correction Calculation

Outdoor Design Wet Bulb Temperature Correction (2ºC)

1.0 (Refer to Figure 5) Piping Length Correction (100 m) Defrost Correction

0.94 (Refer to Figure 6)

0.89 (Refer to Table 1)

Total Outdoor Unit Capacity (CTo)

Total Indoor Units Capacity (CTi)

CTo = Outdoor Unit Rating × Outdoor Design Temperature Correction × Piping Length

Correction × Defrost Correction

= 14.0 × 1.0 × 0.94 × 0.89

= 11.7 kW

(6) Determination of Maximum System Capacity

Comparison of Capacity between Total Indoor Units Capacity (CTi) and Total Outdoor Unit Capacity (CTo)

CTi = 10.3 < CTo = 11.7, thus, select CTi. CTx = CTi = 10.3 kW

(7) Comparison with Essential Load

Against the essential load 10.3kW, the maximum system capacity is 10.3 kW: Proper indoor units have been selected.

(8) Calculation of Maximum Indoor Unit Capacity of Each Room

CTx = CTo, thus, calculate by the calculation below

Room1

Indoor Unit Rating × Indoor Design Temperature Correction

= 5.0 × 0.96

= 4.8 kW OK: fulfills the load 4.8 kW

Room2

Indoor Unit Rating

× Indoor Design Temperature Correction

= 6.3× 0.88

= 5.5 kW OK: fulfills the load 5.5 kW

Completed selecting units since the selected units fulfill the heating loads of Room 1, 2.

Figure 4 Indoor unit temperature correction

To be used to correct indoor unit only

Figure 5 Outdoor unit temperature correction

To be used to correct outdoor unit only

Figure 6 Correction of refrigerant piping length

0.90

0.80

0.95

0.85

0.75

0.65

0.70

200 40 60 80 100 120 140 160 180 200

Heating capacity correction factor

Piping equivalent length (m)

15 16 17 18 19 20 21 22 23 24 25 26 27

0.6

0.7

0.8

0.9

1.0

1.1

1.2

Ratio of heating capacity

Indoor Temperature [°CD.B.]

−20 −15 −10 −5 0 5 10 15

0.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

Ratio of heating capacity

Outdoor Temperature [°C W.B.]

20°C D.B

Note: If CTx = CTo, please refer to the <Cooling> section to calculate the Maximum Indoor Unit Capacity of Each Room.

Outdoor inlet air temp. °C 6 4 2 0

−2 −4 −6 −8 −10 −15 −20

PUMY-P112,125,140VKM3 1.0 0.98 0.89 0.88 0.89 0.90 0.95 0.95 0.95 0.95 0.95

PUMY-P112,125,140YKM(E)3 1.0 0.98 0.89 0.88 0.89 0.90 0.95 0.95 0.95 0.95 0.95

OCH632A

4-2. CORRECTING BY TEMPERATURE

15 16 17 18 19 20 21 22 23 24

0.4

0.6

0.8

1.0

1.2

Ratio of cooling capacity

Indoor Temperature [°CW.B.]

Ratio of cooling capacity

Outdoor Temperature [°C D.B.]

Indoor Temperature

-5.0 0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0

50.0 52.0

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

19°C W.B

Ratio of power input

Outdoor Temperature [°C D.B.]

Indoor Temperature

-15.0 -10.0 -5.0 0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0

50.0 52.0

0.0

0.2

0.4

0.6

0.8

1.0

1.2

16°C W.B

18°C W.B

19°C W.B

20°C W.B

22°C W.B

24°C W.B

CITY MULTI could have varied capacity at different designing temperature. Using the nominal cooling/heating capacity value and the ratio below, the capacity can be observed at various temperature.

PUMY

P112 P125 P140

Nominal cooling capacity

12.5 14.0 15.5

BTU/h

42,650 47,768 52,886

Input kW

2.79 3.46 4.52

Figure 7 Indoor unit temperature correction

To be used to correct indoor unit capacity only

Figure 8 Outdoor unit temperature correction

To be used to correct outdoor unit capacity only

OCH632A

15 16 17 18 19 20 21 22 23 24 25 26 27

0.6

0.7

0.8

0.9

1.0

1.1

1.2

Ratio of heating capacity

Indoor Temperature [°CD.B.]

Ratio of heating capacity

Outdoor Temperature [°C W.B.]

20°C D.B

-20.0 -15.0 -10.0

-5.0 0.0 5.0 10.0 15.0

0.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

Ratio of power input

Outdoor Temperature [°C W.B.]

Indoor Temperature

-20.0 -15.0 -10.0 -5.0 0.0 5.0 10.0 15.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

25°C D.B

15°C D.B

20°C D.B

Figure 9 Indoor unit temperature correction

To be used to correct indoor unit capacity only

Figure 10 Outdoor unit temperature correction

To be used to correct outdoor unit capacity only

PUMY

P112 P125 P140

Nominal heating capacity

14.0 16.0 18.0

BTU/h

47,768 54,592 61,416

Input kW

3.04 3.74 4.47

OCH632A

Operation

PUMY-P112VKM3(-BS) PUMY-P112YKM3(-BS)

PUMY-P112YKME3(-BS)

PUMY-P125VKM3(-BS) PUMY-P125YKM3(-BS)

PUMY-P125YKME3(-BS)

PUMY-P140VKM3(-BS) PUMY-P140YKM3(-BS)

PUMY-P140YKME3(-BS)

Operating conditions

Ambient temperature

Indoor

DB/ WB

27°C/19°C 20°C/— 27°C/19°C 20°C/— 27°C/19°C 20°C/—

Outdoor 35°C 7°C/6°C 35°C 7°C/6°C 35°C 7°C/6°C

Indoor unit

No. of connected units

Unit

2 2 2

No. of units in operation 2 2 2 Model — 50 x 1/63 x 1 63 × 2 63 x 1/80×1

Piping

Main pipe

5 5 5

Branch pipe 2.5 2.5 2.5

Total pipe length 10 10 10 Fan speed — Hi Hi Hi Amount of refrigerant kg 7.2 7.2 7.2

Outdoor unit

Electric current A 16.17/5.26 17.38/5.67 21.67/7.12 21.91/7.22 25.84/8.58 25.54/8.48 Voltage V 230/400 230/400 230/400 Compressor frequency Hz 67 69 84 86 96 96

LEV opening

Indoor unit Pulse 357 421 447 525 511 586

Pressure High pressure/Low pressure

MPa G

2.70/0.94 2.86/0.70 2.86/0.88 2.87/0.67 2.95/0.85 2.95/0.65

Temp. of each section

Outdoor unit

Discharge

°C

67.0 71.9 69.7 72.1 70.7 73.2

Heat exchanger outlet 40.2 2.0 40.8 1.3 43.7 0.9

Accumulator inlet 8.7 1.0 8.0 0.2 5.6 −0.6

Compressor inlet 10.7 1.3 9.1 0.1 7.8 −0.7

Indoor unit

LEV inlet 18.9 32.4 17.7 33.0 17.0 33.4

Heat exchanger inlet 12.3 55.5 11.1 55.7 10.4 56.8

4-3. STANDARD OPERATION DATA (REFERENCE DATA)

OCH632A

4-4. STANDARD CAPACITY DIAGRAM

Before calculating the sum of total capacity of indoor units, please convert the value into the kW model capacity following the formula on "4-1-1. Method for obtaining system cooling and heating capacity".

Y-Type

V-Type

1.0

2.0

3.0

4.0

5.0

6.0

Current(A)

2.0

4.0

6.0

8.0

12.0

10.0

16.0

14.0

4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0

Capacity(kW)

Total capacity of indoor units(kW)

2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0

Total capacity of indoor units(kW)

2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0

Total capacity of indoor units(kW)

2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0

Total capacity of indoor units(kW)

0.0

5.0

10.0

15.0

20.0

Current(A)

0.5

1.0

1.5

2.0

2.5

3.0

3.5

Input(kW)

220V 230V 240V

380V 400V 415V

4-4-1. PUMY-P112VKM3(-BS) PUMY-P112YKM(E)3(-BS) <cooling>

OCH632A

Y-Type

V-Type

1.0

2.0

3.0

4.0

5.0

6.0

Current(A)

2.0

4.0

6.0

8.0

12.0

10.0

16.0

14.0

4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 200.

Capacity(kW)

Total capacity of indoor units(kW)

2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0

Total capacity of indoor units(kW)

2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0

Total capacity of indoor units(kW)

Current(A)

0.5

1.0

1.5

2.0

2.5

3.0

3.5

Input(kW)

2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0

0.0

5.0

10.0

15.0

20.0

Total capacity of indoor units(kW)

PUMY-P112VKM

220V 230V 240V

380V 400V 415V

4-4-2. PUMY-P112VKM3(-BS) PUMY-P112YKM(E)3(-BS) <heating>

OCH632A

4-4-3. PUMY-P125VKM3(-BS) PUMY-P125YKM(E)3(-BS) <cooling>

Y-Type

1.0

2.0

3.0

4.0

5.0

6.0

Current(A)

2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0

Total capacity of indoor units(kW)

Current(A) Input(kW)

2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0

Total capacity of indoor units(kW)

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

2.0

4.0

6.0

8.0

12.0

10.0

16.0

18.0

14.0

4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0

Capacity(kW)

Total capacity of indoor units(kW)

V-Type

Total capacity of indoor units(kW)

2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0

0.0

5.0

10.0

15.0

20.0

220V 230V 240V

380V 400V 415V

OCH632A

Y-Type

1.0

2.0

3.0

4.0

5.0

6.0

Current(A)

2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0

Total capacity of indoor units(kW)

Current(A) Input(kW)

2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0

Total capacity of indoor units(kW)

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

2.0

4.0

6.0

8.0

12.0

10.0

16.0

18.0

14.0

4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0

Capacity(kW)

Total capacity of indoor units(kW)

V-Type

Total capacity of indoor units(kW)

2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0

0.0

5.0

10.0

15.0

20.0

220V 230V 240V

380V 400V 415V

4-4-4. PUMY-P125VKM3(-BS) PUMY-P125YKM(E)3(-BS) <heating>

OCH632A

4-4-5. PUMY-P140VKM3(-BS) PUMY-P140YKM(E)3(-BS) <cooling>

Y-Type

Current(A)

Total capacity of indoor units(kW)

Current(A) Input(kW)

Total capacity of indoor units(kW)

V-Type

2.0

4.0

6.0

8.0

12.0

10.0

16.0

18.0

20.0

14.0

4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0

2.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0

2.0

5.0

0.0

10.0

15.0

20.0

25.0

4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0

2.0

1.0

3.0

4.0

5.0

6.0

7.0

8.0

4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0

Total capacity of indoor units(kW)

Capacity(kW)

Total capacity of indoor units(kW)

220V 230V 240V

380V 400V 415V

OCH632A

Y-Type

Current(A)

Total capacity of indoor units(kW)

Current(A) Input(kW)

Total capacity of indoor units(kW)

2.0

4.0

6.0

8.0

12.0

10.0

16.0

18.0

20.0

14.0

4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0

2.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0

2.0

1.0

3.0

4.0

5.0

6.0

7.0

8.0

4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0

Total capacity of indoor units(kW)

Capacity(kW)

Total capacity of indoor units(kW)

Current(A)

V-Type

2.0

5.0

0.0

10.0

15.0

20.0

25.0

4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0

220V 230V 240V

380V 400V 415V

4-4-6. PUMY-P140VKM3(-BS) PUMY-P140YKM(E)3(-BS) <heating>

OCH632A

4-5.

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 11 to 13. Then multiply by the cooling capacity from Figure 7 and 8 in "4-2. CORRECTION BY TEMPERATURE" 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 14. Then multiply by the heating capacity from Figure 9 and 10 in "4-2. CORRECTION BY TEMPERATURE" to obtain the actual capacity.

(1) Capacity Correction Curve

0 20 40 60 80 100 120 140 160 180

0.50

0.55

0.60

0.65

0.70

0.75

0.80

0.85

0.90

0.95

1.00

9.4

6.3

12.5

16.2

Capacity ratio

Piping equivalent length (m)

Total capacity of indoor unit

0 20 40 60 80 100 120 140 160 180

0.50

0.55

0.60

0.65

0.70

0.75

0.80

0.85

0.90

0.95

1.00

10.5

7.0

14.0

18.2

Capacity ratio

Piping equivalent length (m)

Figure 11 PUMY-P112VKM3(-BS) PUMY-P112YKM(E)3(-BS) <Cooling>

Figure 12 PUMY-P125VKM3(-BS) PUMY-P125YKM(E)3(-BS) <Cooling>

OCH632A

(2) Method for Obtaining the Equivalent Piping Length

Equivalent length for type P112·125·140 = (length of piping to farthest indoor unit) + (0.3 o number of bends in the piping) (m)

Length of piping to farthest indoor unit: type P112–P140.....150 m

4-5-1. Correction of Heating Capacity for Frost and Defrosting

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

Correction factor diagram

Outdoor Intake temperature (W.B.°C)

6 4 2 0 −2 −4 −6 −8 −10 −15 −20

Correction factor

1.0 0.98 0.89 0.88 0.89 0.9 0.95 0.95 0.95 0.95 0.95

0 20 40 60 80 100 120 140 160 180

0.50

0.55

0.60

0.65

0.70

0.75

0.80

0.85

0.90

0.95

1.00

11.6

7.8

15.5

20.2

Capacity ratio

Piping equivalent length (m)

0 20 40 60 80 100 120 140 160 180

0.50

0.55

0.60

0.65

0.70

0.75

0.80

0.85

0.90

0.95

1.00

Capacity ratio

Piping equivalent length (m)

Total capacity of indoor unit

Figure 13 PUMY-P140VKM3(-BS) PUMY-P140YKM(E)3(-BS) <Cooling>

Figure 14 PUMY-P112/125/140VKM3(-BS) <Heating> PUMY-P112/125/140YKM3(-BS) <Heating> PUMY-P112/125/140YKME3(-BS) <Heating>

OCH632A

1.5 m

1 m

MICROPHONE

UNIT

GROUND

4-6. NOISE CRITERION CURVES

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

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

BAND CENTER FREQUENCIES, Hz

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

PUMY-P112VKM3(-BS) PUMY-P112YKM3(-BS) PUMY-P112YKME3(-BS)

COOLING

MODE

HEATING

SPL(dB)

LINE

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

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

BAND CENTER FREQUENCIES, Hz

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

PUMY-P125VKM3(-BS) PUMY-P125YKM3(-BS) PUMY-P125YKME3(-BS)

COOLING

MODE

HEATING

SPL(dB)

LINE

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

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

BAND CENTER FREQUENCIES, Hz

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

PUMY-P140VKM3(-BS) PUMY-P140YKM3(-BS) PUMY-P140YKME3(-BS)

COOLING

MODE

HEATING

SPL(dB)

LINE

OCH632A

OUTLINES AND DIMENSIONS

PUMY-P112VKM3 PUMY-P125VKM3 PUMY-P140VKM3 PUMY-P112VKM3-BS PUMY-P125VKM3-BS PUMY-P140VKM3-BS

Unit: mm

For the

power supply

Terminal connection

For the

branch box

power supply

For the

transmission line

For concentration

control

From left to right

Service panel

Ground for the power supply

Ground for the transmission line

Ground for concentration control

Handle for

moving

Handle for

moving

Ground for

the branch box

power supply

483

426

1338

1050

362

1078

369

632

Bottom piping hole

(Knock-Out)

Drain hole

(5-{33)

154136

45 160160160110

Handle for

moving

Handle for

moving

Rear Air Intake

Side Air Intake

Rear trunking hole

(Knock-Out)

Power supply wiring hole

({ 40 Knock-Out)

Rear piping hole

(Knock-Out)

Power supply wiring hole

({ 27 Knock-Out)

55 60

326 73 60

{

Power supply wiring hole

({ 40 Knock-Out)

Front piping hole

(Knock-Out)

Power supply wiring hole

({ 27 Knock-Out)

Front trunking hole

(Knock-Out)

60 55

27 55

32673

{

Power supply wiring hole

({ 27 Knock-Out)

Power supply wiring hole

({ 40 Knock-Out)

Right piping hole

(Knock-Out)

Right trunking hole

(Knock-Out)

32673

75 50

29 55

{

Air Intake

Front piping cover

Rear piping cover

Air Discharge

Rear Air Intake

Side Air Intake

2-12×36 Oval holes

(Foundation Bolt M10)

2-U Shaped notched holes

(Foundation Bolt M10)

Installation Feet

225

417

370

600 225

25 330

Min.15

Min.500

Min.150

Min. 15mm

Min. 1000mm Min. 150mm

Min. 15mm

FREE

Piping and wiring connections

can be made from 4 directions:

FRONT, Right, Rear and Below.

4 PIPING-WIRING DIRECTIONS

2 SERVICE SPACE

1 FREE SPACE (Around the unit)

Please secure the unit ﬁrmly

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

(Bolts and washers must be

purchased locally.)

Dimensions of space needed

for service access are

shown in the below diagram.

The diagram below shows a basic example.

Explantion of particular details are

given in the installation manuals etc.

FOUNDATION

Service space

Max.30

Example of Notes

VALVE connection location.

Piping Knock-Out Hole Details

3 FOUNDATION BOL TS

{

15.88(5/8F)

{

9.52(3/8F)

OCH632A

Power supply wiring hole

({27Knock-Out)

Power supply wiring hole

({40Knock-Out)

Right trunking hole

(Knock-Out)

Right piping hole

(Knock-Out)

2726

29 55

373 60

75 50

{

Power supply wiring hole

({27Knock-Out)

Power supply wiring hole

({40Knock-Out)

Front piping hole

(Knock-Out)

Front trunking hole

(Knock-Out)

5527

60 3

5560

{

Power supply wiring hole

({40Knock-Out)

Power supply wiring hole

({27Knock-Out)

Rear trunking hole

(Knock-Out)

Rear piping hole

(Knock-Out)

55 60

5527

326

{

Side Air Intake

Handle for

moving

Handle for

moving

Rear Air Intake

Air Discharge

Side Air Intake

Rear Air Intake

2-12×36 Oval holes

(Foundation Bolt M10)

2-U Shaped notched holes

(Foundation Bolt M10)

Installation Feet

70 61

25 330

417

225 225600

370

From left to right

For concentration

control

For the

transmission line

For the

branch box

power supply

For the

power supply

Terminal connection

Ground for

the branch box

power supply

Ground for the transmission line

Ground for concentration control

Ground for the power supply

Handle for

moving

Handle for

moving

Service panel

1338

1050

362

909

426

483

369

632

Air Intake

Drain hole(5-{33)

Bottom piping hole

(Knock-Out)

154136

45 160160160110

Min. 15mm

Min. 1000mm Min. 150mm

Min. 15mm

FREE

Service space

FOUNDATION

The diagram below shows a basic example.

Explanation of particular details are

given in the installation manuals etc.

Dimensions of space needed

for service access are

shown in the below diagram.

Please secure the unit ﬁrmly

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

(Bolts and washers must be

purchased locally.)

1 FREE SPACE (Around the unit)

2 SERVICE SPACE

3 FOUNDATION BOLTS

4 PIPING-WIRING DIRECTIONS

Piping and wiring connections

can be made from 4 directions:

FRONT, Right, Rear and Below.

Min.15

Max.30

Min.150Min.500

Min.500

Example of Notes

Piping Knock-Out Hole Details

Front piping cover

Rear piping cover

Unit: mm

PUMY-P112YKM3 PUMY-P125YKM3 PUMY-P140YKM3 PUMY-P112YKM3-BS PUMY-P125YKM3-BS PUMY-P140YKM3-BS PUMY-P112YKME3 PUMY-P125YKME3 PUMY-P140YKME3 PUMY-P112YKME3-BS PUMY-P125YKME3-BS PUMY-P140YKME3-BS

OCH632A

WIRING DIAGRAM

PUMY-P112VKM3 PUMY-P125VKM3 PUMY-P140VKM3 PUMY-P112VKM3-BS PUMY-P125VKM3-BS PUMY-P140VKM3-BS

OCH632A

PUMY-P112YKM3 PUMY-P125YKM3 PUMY-P140YKM3 PUMY-P112YKM3-BS PUMY-P125YKM3-BS PUMY-P140YKM3-BS

OCH632A

PUMY-P112YKME3 PUMY-P125YKME3 PUMY-P140YKME3 PUMY-P112YKME3-BS PUMY-P125YKME3-BS PUMY-P140YKME3-BS

OCH632A

NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION

7-1. TRANSMISSION SYSTEM SETUP

Branch box

001

Branch box

006

Indoor unit

(001)

Indoor unit

(002)

Indoor unit

(003)

Indoor unit

(006)

Indoor unit

(007)

Indoor unit

(008)

Indoor unit

(004)

Indoor unit

(005)

M-NET cable

① M-NET cable shielding wire must

be connected to each refrigerant

system (outdoor and branch box).

② Set addresses :

Outdoor unit ............ 051–100

Branch box ............... 001–046

③ Outdoor unit has no 100s digit switch.

The address automatically become "100"

if it is set as "01–50".

Piping

Signal line

④ Make sure that the wiring between the

branch box and indoor unit is properly

done, matching with the piping connection.

A B C D E A B C

MA remote

controller

MA remote

controller

MA remote

controller

MA remote

controller

WL-RC WL-RC

WL-RC

For centralized

management

051

Outdoor unit

Piping

For Branch box/ City Multi indoor unit

Address SW

SW1

1 2 3 4 5 6

SW1

1 2 3 4 5 6

City Multi

Indoor unit

009

City Multi

Indoor unit

010

MA remote

controller

City Multi .................. 001–050

For centralized

management

061

Outdoor unit

For Branch box/City Multi indoor unit

Address SW

City Multi

Indoor unit

011

City Multi

Indoor unit

012

City Multi

Indoor unit

013

City Multi

Indoor unit

014

City Multi

Indoor unit

015

111 161

MA remote

controller

M-NET

remote

controller

M-NET

remote

controller

Address SW

1 1

■ Applicable outdoor units for this service manual

■ Other City Multi outdoor unit

Note: The refrigerant system which includes branch box cannot be operated as a group.

⑤ M-NET remote controller cannot be connected

with refrigerant system including branch box.

⑥ Refrigerant systems including branch box cannot

be grouped with using M-NET remote controller

or system controller.

OCH632A

7-2. Special Function Operation and Settings for M-NET Remote Controller

(M-NET remote controller cannot be connected with a refrigerant system which includes branch box.)

• 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 simul-

taneously and held for 2 seconds, the display shown in Figure 1 will appear.

•Changing address:Pressthetemperatureadjustment

buttons to change the displayed address to the address to

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.

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.

Note: 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.

Notes:

If the temperature adjustment

buttons are pressed, the address may be changed to the indoor unit that is 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.

Notes:

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 simulta-

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

Figure 1. (A) Group setting display

Figure 2. Normal completion of entry

Figure 3. Entry error signal

Figure 4. (B) Making paired settings

Figure 5. Completing normal entry

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

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

(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).

OCH632A

(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.

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

a) In making group settings:

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

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

and hold for 2 seconds.

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

* When 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thesameasdescribedina) under (2) Address check.

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

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

b) In making paired settings:

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

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

•Putintothelinkedunitaddressdisplaymode:Theprocedureisthesameasdescribedinb) under (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 7. Display when an abnormality has

occurred during clearing

Figure 6. Display after address has been

cleared normally

Figure 8. Display after address has been cleared normally

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

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

OCH632A

7-3. REFRIGERANT SYSTEM DIAGRAM PUMY-P112VKM3(-BS) PUMY-P125VKM3(-BS) PUMY-P140VKM3(-BS)

PUMY-P112YKM3(-BS) PUMY-P125YKM3(-BS) PUMY-P140YKM3(-BS) PUMY-P112YKME3(-BS) PUMY-P125YKME3(-BS) PUMY-P140YKME3(-BS)

LEV-A

LEV-B

HIC

Solenoid valve (SV1)

High pressure sensor

(63HS)

High pressure switch (63H)

Low pressure sensor(63LS)

Oil separator

Service port

Strainer

Distributor

Compressor

Refrigerant piping specifications <dimensions of flared connector>

Capillary tube for oil separator : [2.5 o [0.8 o L1000

Capacity

Item

Liquid piping

Gas piping

P15, P20, P25, P32, P40, P50

P63, P80, P100,

P125, P140

P112, P125, P140

Indoor unit

Outdoor unit

[6.35 <1/4>

[9.52 <3/8>

[12.7 <1/2>

[15.88 <5/8>

Thermistor (TH4) <

Compressor

Thermistor (TH7) <Ambient>

Thermistor (TH3)

Unit: mm <in>

Ball valve

Strainer

Refrigerant Gas pipe

4-way valve

Check valve <Low pressure>

Thermistor (TH6) <Suction pipe>

Check valve <High pressure>

Strainer

Thermistor (TH2) <HIC pipe>

Refrigerant Liquid pipe

Stop valve

Service port

Capillary tube

Accumulator

Strainer

Refrigerant flow in cooling Refrigerant flow in heating

Note: When connecting the CONNECTION KIT (PAC-LV11M-J) and an M-series indoor unit, refer to the installation manual for the CONNECTION KIT.

OCH632A

Capillary tube

E D C B A

Strainer #100

Condenser / evaporator temperature thermistor (TH5 or RT12)

Pipe temperature thermistor / liquid (TH2 or RT13)

Strainer #100

Indoor units Branch box

Outdoor unit

Thermistor (TH-A–E) (Gas pipe temperature)

LEV A–E

(Linear expansion valve)

Room temperature thermistor (TH1 or RT11)

PAC-MK51/52BC(B)

PAC-MK31/32BC(B)

Branch box

Capillary tube behind LEV (in cooling mode)

([4 o [3.0 o L130) o 5

([4 o [3.0 o L130) o 3

Unit: mm

LEV-A

LEV- B

HIC

Solenoid valve (SV1)

High pressure sensor (63HS)

High pressure switch (63H)

Low pressure sensor(63LS)

Oil separator

Service port

Strainer

Distributor

Compressor

Thermistor (TH4) <Compressor>

Thermistor (TH7) <Ambient>

Thermistor (TH3)

Ball valve

Strainer

4-way valve

Check valve <Low pressure>

Thermistor (TH6) <Suction pipe>

Check valve <High pressure>

Strainer

Thermistor (TH2) <HIC pipe>

Stop valve

Service port

Capillary tube

Accumulator

Strainer

Refrigerant flow in cooling Refrigerant flow in heating

7-4. REFRIGERANT SYSTEM DIAGRAM (WHEN USING BRANCH BOX)

Piping connection size

■Incaseofusing2-branchboxes

B B B B B

Branch box

B B

B B B

2 branches pipe (joint) : optional parts

Branch box #1

Branch box #2

■Incaseofusing1-branchbox

Flare connection employed (No brazing)

Liquid (mm) {9.52

Gas (mm) {15.88

The pipe connection size differs according to the type and capacity of indoor units. Match the piping connection size of branch box with indoor unit. If the piping connection size of branch box does not match the piping connection size of indoor unit, use optional different-diameter (deformed) joints to the branch box side. (Connect deformed joint directly to the branch box side.)

■Installationprocedure(2branchpipe(joint))

Refer to the installation manuals of MSDD-50AR-E and MSDD-50BR-E.

OCH632A

Indoor unit type

Pipe size (mm)

(kW)

Liquid

Gas

[6.35 [9.52

[6.35 [12.7

[6.35

[15.88

[9.52

[15.88

[6.35 [9.52

■Pipesize(Branchbox-Indoorunit)ForMorSseriesIndoorunit

Indoor unit type

Pipe size (mm)

(kW)

Liquid

Gas

[6.35 [12.7

[9.52

[15.88

[9.52

[15.88

100

[9.52

[15.88

■ Pipe size (Branch box-Indoor unit) For P series Indoor unit

Pipe size (mm)

Liquid

Gas

[9.52

[15.88

■ Pipe size (Branch box-Indoor unit) For Cylinder unit and Hydrobox

When using 35, 50 type indoor unit of P series, use the flare nut (for R410A) attached to the indoor unit. Do not use the flare nut (for R407C) in the indoor unit accessory. If it is used, a gas leakage or even a pipe extraction may occur.

For liquid For gas

[9.52 mm

[15.88 mm

A UNIT

B UNIT

C UNIT

D UNIT

E UNIT

Liquid pipe Gas pipe

[6.35 mm [9.52 mm

[6.35 mm [9.52 mm [6.35 mm

[9.52 mm [6.35 mm [9.52 mm [6.35 mm [12.7 mm

* 3- branch type is only for A, B, and C unit.

[6.35mm [9.52mm

[12.7mm [15.88mm [19.05mm

Conversion formula

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

(1) Valve size for outdoor unit

(2) Valve size for branch unit

Different-diameter joint (optional parts)

Fig.7-1

Fig.7-2

MAC-A454JP MAC-A455JP MAC-A456JP PAC-493PI PAC-SG76RJ-E PAC-SG78RJB-E PAC-SG79RJB-E PAC-SG80RJB-E PAC-SG77RJB-E PAC-SG76RJB-E

{9.52 → {12.7 {12.7 → {9.52 {12.7 → {15.88 {6.35 → {9.52 {9.52 → {15.88 {9.52 → {12.7 {12.7 → {9.52 {12.7 → {15.88 {6.35 → {9.52 {9.52 → {15.88

{9.52 {12.7 {12.7 {6.35 {9.52 {9.52 {12.7 {12.7 {6.35 {9.52

{12.7 {9.52 {15.88 {9.52 {15.88 {12.7 {9.52 {15.88 {9.52 {15.88

Connected pipes diameter

Diameter AmmDiameter B

Model name

A B

Type

Flare

(Fig.7-1)

Braze

(Fig.7-2)

A (Outside)

B (Inside)

OCH632A

7-5. SYSTEM CONTROL

7-5-1. Example for the System

•Exampleforwiringcontrolcables,wiringmethodandaddresssetting,permissiblelengths, andtheprohibiteditemsarelisted

in the standard system with detailed explanation.

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

Example of wiring control cables Wiring Method and Address Setting

•1

M-NET

remote controller for

each

M-NET control

indoor unit.

•Thereisnoneedforsetting

the 100 position on the M-NET remote controller.

1. Standard operation

2. Operation using 2 M-NET remote controllers

•Using2M-NETremote

controllers for each M-NET control 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 M-NET control indoor unit (M-IC). Use non-polarized 2-core wire.

Connect terminals M1 and M2 on transmission cable terminal block (TB5) for each indoor unit with the terminal block (TB6) for M-NET the remote controller (M-NET RC).

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

as shown below.

3. Group operation

•MultipleM-NETcontrolindoor

units operated together by 1 M-NET remote controller

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

shown below.

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

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

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

shown below.

d. Use the M-NET control indoor unit (M-IC) within the

group with the most functions as the M-IC (Main) unit

Combinations of 1 through 3 above are possible.

TB5

TB15

(01)

(101)

M-IC(Main)

TB3

TB7

(51)

TB5

TB15

(02)

M-IC(Sub)

M-NET RC

1 2

A B

M1M2

1 2

M1M2

Group A

TB5

TB15

(01)

(101)

M-NET RC

(Main)

(151)

M-IC

TB3

TB7

(51)

TB5

TB15

(02)

M-IC

M-NET RC

(Sub)

(102)

M-NET RC

(Main)

(152)

M-NET RC

(Sub)

1 2

M1M2

1 2

M1M2

A B A B A B A B

TB5

1 2

TB15

(01)

(101)

M-IC

A B

M1M2

TB3

TB7

(51)

TB5

TB15

(02)

M-IC

M-NET RC

(102)

M-NET RC

M1M2

1 2

M1M2

A B

Unit Range Setting Method

M-NET control

indoor unit (M-IC)

001 to 050 —

Outdoor unit (OC) 051 to 100

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

M-NET Remote

controller (M-NET RC)

101 to 150 Indoor unit address plus 100

Unit Range Setting Method

M-NET control

indoor unit (M-IC)

001 to 050 —

Outdoor unit (OC)

051 to 100

Use the smallest address of all the indoor units plus 50.

Main M-NET

Remote Controller

(M-NET RC)

101 to 150

Indoor unit address plus 100

Sub M-NET

Remote Controller

(M-NET RC)

151 to 200

Indoor unit address plus 150

Unit Range Setting Method

M-

IC (Main) 001 to 050

Use the smallest address within the same group of M-NET control indoor units.

M-

IC (Sub) 001 to 050

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

Outdoor unit

051 to 100

Use the smallest address of all the M-NET control indoor units plus 50.

Main M-NET

Remote Controller

(M-NET RC)

101 to 150

Set at an M-IC (Main) address within the same group plus 100.

OCH632A

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

Permissible Lengths Prohibited items

Longest transmission cable length (1.25 mm²) L

1 + L2, L3 + L1 [ 200 m

M-NET Remote controller cable length

1. If 0.5 to 1.25 mm²

1, R2 [10 m

2. If the length exceeds 10 m, the exceeding section should be 1.25 mm² 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

1 Use the

M-NET control indoor unit (M-IC) address plus 150 as the sub

M-NET

remote controller address. In this case, it should be

152.

2 3 or more

M-NET remote controllers (

M-NET

RC) cannot be connected to 1 M-NET control indoor unit.

1 The

M-NET

remote controller address is the M-NET control indoor unit main address plus 100. In this case, it should be

101.

•

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

•DonotconnectanythingwithTB15ofM-NET control indoor unit (M-IC).

Name Symbol Maximum units for connection

Outdoor unit OC —

M-NET control

Indoor unit

M-IC

1 OC unit can be connected to 1 to 9 (P112)/1 to 10 (P125)/1 to 12 (P140) M-IC units

M-NET remote

controller

M-NET RC

Maximum 2

M-NET

RC for 1 indoor unit, Maximum 12

M-NET

RC for 1 OC

TB5

TB15

(01)

(101)

M-IC

TB3

TB7

(51)

TB5

TB15

(02)

M-NET RC

TB15

MA-RC

1 2

A B

M1M2

1 2

M1M2

A B

M-IC

TB5

TB15

(01)

(101)

M-NET RC

(Main)

(151)

M-IC

TB3

TB7

(51)

TB5

TB15

(02)

M-IC

M-NET RC

(Sub)

(102)

M-NET RC

(Main)

(104)

2M-NET RC

1 2

A B

M1M2

1 2

M1M2

A B A B A BA B

(103)

1M-NET RC

(Sub)

TB5

TB15

(01)

(102)

M-IC(Main)

TB3

TB7

(51)

TB5

TB15

(02)

M-IC(Sub)

1M-NET RC

1 2

A B

M1M2

1 2

M1M2

OCH632A

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

(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 M-NET control indoor unit

(M-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 terminal block of the M-NET control indoor unit (M-IC).

Connect terminals M1 and M2 on the transmission cable terminal block of the M-NET control indoor unit (M-IC) that has the most recent address within the same group to the terminal block on the M-NET remote controller (M-NET RC).

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

unit (OC). e. DO NOT change the jumper connector CN41 on outdoor multi controller circuit 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.

h. The group setting operations among the multiple M-NET control indoor units is done by the M-NET remote controller

(M-NET RC) after the electrical power has been turned on.

Unit Range Setting Method

M-IC (Main) 01 to 50

Use the smallest address within the same group of M-NET control indoor units.

M-IC (Sub) 01 to 50

Use an address, other than the M-IC (Main) in the same group of M-NET control indoor units. This must be in sequence with the M-IC (Main).

Outdoor Unit 51 to 100

Use the smallest address of all the M-NET control indoor units plus 50.

Theaddressautomaticallybecomes“100”ifitissetas“01–50”.

Main M-NET Remote Controller

101 to 150

Set at an M-IC (Main) address within the same group plus 100.

Sub M-NET Remote Controller

151 to 200

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

MA Remote Controller —

Address setting is not necessary. (Main/sub setting is necessary.)

TB7

TB3

M-IC

(51)

TB5

M-NET RC

(01)

M-IC

TB5

(03)

M-IC

TB5

(02)

M-IC

TB5

(04)

M-IC

TB5

(05)

TB5

(07)

TB5

(06)

(101)

(105)

(104)

(155)

TB7

(53)

Power Supply

Unit

System controller

A : Group B : Group C : Group D : Shielded Wire E : Sub M-NET Remote Controller

( ): Address example

M1M2

A BA BA B

M1M2

TB3

M1M2

A B

M1M2

M-IC

M-NET RC

OCH632A

• Name, Symbol, and the Maximum Units for Connection

Permissible Length

Prohibited items

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

•Longesttransmissioncablelength:L

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

•M-NET Remote controller cable length : R

1,R2, R2+R3, R4 [ 10 m (0.5 to 1.25 mm²)

If the length exceeds 10 m, use a 1.25 mm² shielded wire. The length of this section (L

should be included in the calculation of the maximum length and overall length.

•Neverconnecttogethertheterminalblocks(TB5)fortransmissionwiresforM-NETcontrolindoorunits(M-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M-NETcontrol indoorunitofthesame

group wiring together.

M-IC

(51)

TB5

M-NET RC

(01)

TB5

(03)

M-IC

TB5

(02)

TB5

(04)

M-IC

TB5

(05)

TB5

(07)

M-IC

TB5

(06)

(101)

(105)

(104)

(155)

(53)

Power Supply

Unit

A : Group B : Group C : Group D : Shielded Wire E : Sub M-NET Remote Controller

( ): Address example

TB7TB3

M1M2

TB7

M1M2

TB3

M1M2

A B A B A B

A B

M1M2

System controller

M-IC

M-NET RC

OCH632A

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

Example of wiring control cables Wiring Method and Address Setting

•1MAremotecontrollerfor

each indoor unit.

1. Standard operation

2. Operation using 2 remote controllers

•Using2MAremotecontrollers for each M-NET control 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 M-NET control indoor unit (M-IC). Use non-polarized 2-core wire.

b. Connect terminals 1 and 2 on transmission cable

terminal block (TB15) for each M-NET control indoor unit with the terminal block for the MA remote controller (MA-RC).

3. Group operation

•Multipleindoorunitsoperated

together by 1 MA remote controller.

a. The same as above a b. The same as above b 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 MA remote controllers.

· Set either one of the MA remote controllers to "sub remote controller".

Refer to the installation manual of MA remote con-

troller.

a. The same as above a b. The same as above b c. In the case of group operation using MA remote con-

troller (MA-RC), connect terminals 1 and 2 on transmission cable terminal block (TB15) of each M-NET control indoor unit. Use non-polarized 2-core wire.

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

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

Combinations of 1 through 3 above are possible.

MA-RC

TB5

TB15

(00)

M-IC

TB3

TB7

(00)

TB5

TB15

(00)

M-IC

M1 M2SM1 M2

M1 M2

A B

1 2

M1 M2

1 2

MA-RC

(Main)

TB5

TB15

(00)

M-IC

TB3

TB7

(00)

TB5

TB15

(00)

M-IC

MA-RC

(Sub)

MA-RC

M1M2SM1M2

1 2

M1M2

1 2

M1M2

A B

TB5

TB15

(00)

M-IC

TB3

TB7

(00)

1 L2

TB5

TB15

(00)

M-IC

MA-RCMA-RC

M1 M2SM1 M2

1 2

M1 M2

1 2

M1 M2

A B

OCH632A

Permissible Lengths Prohibited items

Longest transmission cable length: L

1 + L2 [ 200 m (1.25 mm²)

MA remote controller cable length:

1, R2 [ 200 m (0.3 to 1.25 mm²)

Longest transmission cable length: L

1 + L2 [ 200 m (1.25 mm²)

MA remote controller cable length:

3 +R4, R5 [ 200 m

(0.3 to 1.25 mm²)

Longest transmission cable length: L

1 + L2 [ 200 m (1.25 mm²)

MA remote controller cable length:

7 +R8 [ 200 m (0.3 to 1.25 mm²)

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

3 MA remote controllers or more cannot be connected with the M-NET control indoor unit of the same group.

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

MA-RC

(00)

M-IC(00)

MA-RC

(00)

M-IC

TB5

1 2

TB15

A B

M1 M2

TB3

TB7

TB5

TB15

M1 M2

1 2

M1 M2

A B

MA-RC

(Main)

TB5

TB15

(00)

M-IC

TB3

TB7

(00)

TB5

TB15

(00)

M-IC

MA-RC

(Sub)

MA-RC

(Main)

MA-RC

(Sub)

MA-RC

(Main)

1 2

M1 M2

A B A B A B A B A B

1 2

M1 M2

TB5

TB15

TB3

TB7

(00)

TB5

TB15

(00)

M-IC

MA-RCMA-RCM-NET RC

1 2

A B

M1 M2

1 2

M1 M2

A BA B

(00)

M-IC

(00)

OCH632A

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

(Address settings are necessary.)

Examples of Transmission Cable Wiring

Wiring Method Address Settings

a. Always use shielded wire when making connections between the outdoor unit (OC) and the M-NET control indoor unit

(M-IC), as well for all OC-OC, and IC-IC wiring intervals.

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 terminal block of the M-NET control

indoor unit (M-IC).

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

e. DO NOT change the jumper connector CN41 on outdoor multi controller circuit 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.

h. The group setting operations among the multiple M-NET control indoor units is done by the M-NET remote controller

(M-NET RC) after the electrical power has been turned on.

i. When connecting PWFY unit

•ForPWFYseries,donotsetupgroupconnectionwithotherindoorunits.

•LOSSNAYisnotavailableforusewithPWFYseries.

•UseaWMAremotecontrollerforoperationofPWFYseries.

For more details, refer to the service manual for PWFY series.

Unit Range Setting Method

M-IC (Main) 01 to 50

Use the smallest address within the same group of indoor units.

M-IC (Sub) 01 to 50

Use an address, other than the M-IC (Main) in the same group of M-NET indoor units. This must be in sequence with the M-IC (Main).

Outdoor Unit 51 to 100

Use the smallest address of all the indoor units plus 50.

Theaddressautomaticallybecomes“100”ifitissetas“01–50”.

Main M-NET Remote Controller

101 to 150

Set at an M-IC (Main) address within the same group plus 100.

Sub M-NET Remote Controller

151 to 200

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

MA Remote Controller —

Address setting is not necessary. (Main/sub setting is necessary.)

TB7

M-IC

(51)

TB15 TB15

TB15

MA-RC

(01)

M-IC

TB5

(03)

M-IC

TB5TB5

(02)

M-IC

TB5

(04)

M-IC

(05)

M-IC

(07)

M-IC

(06)

MA-RC

(53)

Power Supply

Unit

TB3

A : Group B : Group C : Group D : Shielded Wire E : Sub MA Remote Controller

( ): Address example

M1M2SM1M2

TB7

M1M2

TB3

M1M2

A B

1 2

M1M2

1 2

TB15

TB5

M1M2

1 2

TB15

TB5

M1M2

1 2

A B A B

TB15

TB5

M1M2

1 2

TB15

A B

System controller

OCH632A

• Name, Symbol, and the Maximum Units for Connection

Permissible LengthProhibited items

•Neverconnecttogethertheterminalblocks(TB5)fortransmissionwiresforM-NETcontrolindoorunits(M-IC)thathave

been connected to different outdoor units (OC).

•M-NETremotecontrollerandMAremotecontrollercannotbeconnectedwiththeM-NETcontrolindoorunitofthesame

group wiring together.

Longest length via outdoor unit (M-NET cable): L1+L2+L3+L4 and L1+L2+L6+L7 [ 500 m (1.25 E more) Longest transmission cable length (M-NET cable): L1 and L3+L4 and L2+L6 and L7 [ 200 m (1.25 E or more) MA Remote controller cable length: m1 and m1+m2+m3 and m1+m2+m3+m4

[ 200 m (0.3 to 1.25 E)

A : Group B : Group C : Group D : Shielded Wire E : Sub MA Remote Controller

( ): Address example

M-IC

(51)

TB5 TB15 TB15

TB15 TB15

MA-RC

(01)

M-IC

TB5

(03)

M-IC

TB5

(02)

M-IC

TB5

(04)

M-IC (05)

M-IC

TB5

(07)

M-IC

(06)

MA-RC

(53)

Power Supply

Unit

TB7TB3

M1M2

TB7

M1M2

TB3

M1M2

A B

A B A B

1 2

TB15TB5

M1M2

1 2

TB15TB5

M1M2

1 2

TB15

System controller

OCH632A

E. Example of a system using Branch Box and A-Control indoor unit

Examples of Transmission Cable WiringWiring Method Address Settings

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

all OC-OC 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 terminal block (TB5) of the Branch Box.

c. Connect terminals 1 and 2 on the transmission cable terminal block (TB5/TB15) of the A-control indoor unit (A-IC), to

the terminal block on the MA remote controller (MA-RC).

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

nal S on the power supply unit to the earth. g. Set the address setting switch as follows.

Unit Range Setting Method

A-IC 01 to 50

According to the set address of connected Branch Box, set the A-IC addresses sequentially by SW1 on Branch Box. (For example, when setting the Branch Box address to 01, A-IC addresses set 02,03,04, and 05. )

Branch Box 01 to 50

Use a number within the range 1–50, but it should not make the highest address of connected A-IC exceed 50.

Outdoor Unit 51 to 100

Use the smallest address of all the Branch Box plus 50.

Theaddressautomaticallybecomes“100”ifitissetas“01–50”.

MA Remote Controller

Address setting is not necessary.

A : Shielded wire ( ): Address example

TB7

TB3

(51)

TB7

(53)

Power Supply

Unit

System controller

M1M2

TB3

M1M2

TB3A

A-IC

(01)

(02)

(03)

(04)

MA-RC

WL-RC

(05)

(06)

(07)

(08)

TB5/TB15

12A

TB3B

TB3C

TB3D

TB3E

TB3A

TB3B

TB3C

TB5

(01)

(06)

Branch Box

A-IC

MA-RC

WL-RC

TB5/TB15

OCH632A

• Name, Symbol, and the Maximum Units for Connection

Permissible LengthProhibited items

Longest length via outdoor unit (M-NET cable): L1+L2+L3+L4+L5 [ 500 m (1.25 E

or more)]

Longest transmission cable length (M-NET cable): L1+L2, L3+L4, L5 [ 200 m (1.25 E

or more) ]

Longest transmission cable length (A-Control cable): L6 [ 25 m (1.5 E

) ]

Remote controller cable length: m1 [ 200 m (0.3 to 1.25 E

) ]

TB7

TB3

(51)

TB7

(53)

Power Supply

Unit

System controller

M1M2

TB3

M1M2

TB3A

A-IC

(01)

(02)

(03)

(04)

MA-RC

WL-RC

M-NET

(101)

(05)

(06)

(07)

(08)

TB5/TB15

12A

A B

TB3B

TB3C

TB3D

TB3E

TB3A

TB3B

TB3C

TB5

(01)

(06)

Branch Box

MA-RC

A-IC

TB5/TB15

MA-RC

•Pluralindoorunitscannotbeoperatedbyasingleremotecontroller

•Differentrefrigerantsystemscannotbeconnectedtogether.

•M-NETremotecontrollercannotbeconnected.

OCH632A

F. Example of a system using Branch Box, A-Control indoor unit, and M-NET Control indoor unit.

Examples of Transmission Cable WiringWiring Method Address Settings

a. Always use shielded wire when making connections between the outdoor unit (OC) and the Branch Box or M-NET

control indoor unit (M-IC), as well for all OC-OC 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 terminal block (TB5)

of the Branch Box or M-NET control indoor unit (M-IC). c. Connect terminals 1 and 2 on the transmission cable terminal block (TB5/TB15) of the A-control indoor unit (A-IC) or

M-NET control indoor unit (M-IC), to the terminal block on the MA remote controller (MA-RC). d. Connect together terminals M1, M2 and terminal S on the terminal block for centralized 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 to the earth. g. Set the address setting switch as follows.

Unit Range Setting Method

M-IC 01 to 50

A-IC 01 to 50

According to the set address of connected Branch Box, set the A-IC addresses sequentially by SW1, SW11, SW12 on Branch Box. (For example, when the Branch Box address is set to 01, set the A-IC addresses to 01, 02, 03, 04 and 05.)

Branch Box 01 to 50

Use a number within the range 1-50, but it should not make the highest address of connected A-IC exceed 50.

Outdoor Unit 51 to 100

Use the smallest address of all the Branch Box plus 50.

Theaddressautomaticallybecomes“100”ifitissetas“01–50”.

MA Remote Controller

Address setting is not necessary.

TB7

TB3

(51)

TB7

(53)

M1M2

TB3

M1M2

TB3A

A-IC (01)

A-IC (02)

A-IC (03)

A-IC (04)

A-IC

MA-RC

WL-RC

(05)

A-IC (06)

A-IC (07)

A-IC (08)

TB5/TB15

12A

TB3B

TB3C

TB3D

TB3E

TB3A

TB3B

TB3C

TB5

M-IC (09)

M-IC (10)

MA-RC

TB5

12A

TB5

Power

Supply

Unit

System controller

Branch Box

A: Shielded wire ( ): Address example

TB5/TB15

TB15

TB5/TB15

OCH632A

• Name, Symbol, and the Maximum Units for Connection

Permissible LengthProhibited items

Longest length via outdoor unit (M-NET cable): L1+L2+L3+L4+L5+L6+L7 [500 m (1.25 E

or more)]

Longest transmission cable length (M-NET cable): L1+L2+L3+L4, L5 +L6 and L7 [200 m (1.25 E

or more) ]

Longest transmission cable length (A-Control cable): L8 [25 m (1.5 E

) ]

Remote controller cable length: m1 [200 m (0.3 to 1.25 E

) ]

TB7

TB3

(51)

TB7

(53)

M1M2

TB3

M1M2

TB3A

A-IC

(01)

A-IC

(02)

A-IC

(03)

A-IC

(04)

A-IC

MA-RC

WL-RC

(05)

A-IC

(06)

A-IC

(07)

A-IC

(08)

TB5/TB15

12A

MA-RC

TB3B

TB3C

TB3D

TB3E

TB3A

TB3B

TB3C

TB5

M-IC

(09)

M-IC

(10)

TB5

Power

Supply

Unit

System controller

Branch Box

A: Shielded wire ( ): Address example

M-NET

(101)

A B

TB5/TB15

TB15

•Pluralindoorunitscannotbeoperatedbyasingleremotecontroller

•Differentrefrigerantsystemscannotbeconnectedtogether.

•M-NETremotecontrollercannotbeconnected.

OCH632A

8 TROUBLESHOOTING

Notes:

1.Ifcheckcodeappearsonremotecontrollerorremotecontrollermalfunctions,referto“8-1-2.CountermeasuresforErrorDuringRun”.

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

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

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

8-1. CHECK POINTS FOR TEST RUN

8-1-1. Procedures before 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 500 V, 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“7-2.

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.

8-1-1-1. Test run for M-NET Remote controller

(M-NET remote controller cannot be connected with a refrigerant system which includes branch box.

)

Whenyoudelivertheunitafterthetestrun,instructtheenduserforproperusageofthesystemusingowners’manual

and the

estrunreportyoumadetocertificatenormaloperation.Ifabnormalitiesaredetectedduringtestrun,referto“8-1-2. CountermeasuresforErrorDuringTestRun”.AsforDIPswitchsettingofoutdoorunit,referto“8-5.INTERNALSWITCH FUNCTIONTABLE”.

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 9

ON/OFF LED (Lights up in operation)

LOUVER button 6

TEST RUN button 2

AIR DIRECTION button 6

FAN SPEED button 5

TEST RUN indicator

Indoor unit liquid pipe temperature indicator (see Note 4)

(Cooling/Heating) OPERATION SWITCH button 3,4

Control panel

Operation procedure

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

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.

OCH632A

F1 F2 F3 F4

unem ecivreS

rosruC

:unem niaM

Test run Input maintenance info. Function setting Check Self check

F1 F2 F3 F4

Test run menu

Cursor

Service menu:

Test run Drain pump test run

Select "Service" from the Main menu, and press the button.

Select "Test run" with the F1 or F2 button, and press the button.

Select "Test run" with the F1

or F2 button, and press the button.

F1 F2 F3 F4

Cool

Pipe

Auto

Switch disp.

Mode Fan

RemainTest run

F1 F2 F3 F4

Remain

Vane

Cool mode: Check the cold air blows out. Heat mode: Check the heat blows out.

Press the F1

button to go through the operation modes in the order of

"Cool and Heat".

Check the auto vane with the F1

F2 buttons.

Check the operation of the outdoor unit fan, also.

Press the

button to return to “Test run operation”.

Press the

button.

Whenthetestruniscompleted,the“Testrunmenu”screenwillappear.

The test run will automatically stop after 2 hours. *The function is available only for the model with vanes.

Test run operation

Auto vane check*

Press the button and open the Vane setting screen.

Function buttons

F1 F2 F3 F4

MENU RETURN SELECT ON/OFF

8-1-1-2. Test run for wired remote controller <PAR-31MAA> <PAR-32MAA>

OCH632A

8-1-2. Countermeasures for Error During Test Run

•Ifaproblemoccursduringtestrun,acodenumberwillappear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.

1 2 3 4 5 6 7 8

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

Bit

Indication

Compressor operated

52C321S44SV15(SV2)6—

—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.

Check

code

(2 digits)

Check

code

(4 digits)

Trouble

Detected Unit

Remarks

Indoor Outdoor

Remote

Controller

Ed 0403 Serial communication error

Outdoor unit outdoor multi controller circuit board – Power circuit board communication trouble

U2 1102 Compressor temperature trouble

Check delay code 1202

UE 1302 High pressure trouble

Check delay code 1402

U7 1500 Superheat due to low discharge temperature trouble

Check delay code 1600

U2 1501

Refrigerant shortage trouble

Check delay code 1601

Closed valve in cooling mode

Check delay code 1501

P6 1503 Indoor HEX freezing protection

EF 1508 4-way valve trouble in heating mode Check delay code 1608

L6 2135 Circulation water freeze protection PA 2500 Water leakage P5 2502 Drainoverowprotection P4 2503 Drain sensor abnormality

UF 4100 Compressor current interruption (locked compressor) Check delay code 4350

Pb 4114 Fan trouble (Indoor unit)

UP 4210 Compressor overcurrent interruption

U9 4220

Voltage shortage/overvoltage/PAM error/L1open phase/primary current sensor error/power synchronization signal error

Check delay code 4320

U5 4230 Heat sink temperature trouble

Check delay code 4330

U6 4250 Power module trouble

Check delay code 4350

U8 4400 Fan trouble (Outdoor unit)

Check delay code 4500

U3 5101

Air inlet thermistor (TH21) open/short or Compressor temperature thermistor (TH4) open/short

Check delay code 1202

U4 5102

Liquid pipe temperature thermistor (TH22) open/short

Suction pipe temperature thermistor (TH6) open/short Check delay code 1211 U4 5103 Gas pipe temperature thermistor (TH23) open/short U4 5105 Outdoor liquid pipe temperature thermistor (TH3) open/short Check delay code 1205 U4 5106 Ambient temperature thermistor (TH7) open/short

Check delay code 1221

U4 5109 HIC pipe temperature thermistor (TH2) open/short

Check delay code 1222

U4 5110 Heat sink temperature thermistor (TH8) open/short

Check delay code 1214

F5 5201 High pressure sensor (63HS) trouble

Check delay code 1402

F3 5202 Low pressure sensor (63LS) trouble

Check delay code 1400

UH 5300 Primary current error

Check delay code 4310 P4 5701 Contactfailureofdrainoatswitch A0 6600 Duplex address error Only M-NET Remote controller is detected. A2 6602 Transmission processor hardware error

Only M-NET Remote controller is detected. A3 6603 Transmission bus BUSY error

Only M-NET Remote controller is detected. A6 6606 Signal communication error with transmission processor

Only M-NET Remote controller is detected. A7 6607 No ACK error

Only M-NET Remote controller is detected. A8 6608 No response frame error

Only M-NET Remote controller is detected.

E0/E4 6831 MA communication receive error

Only MA Remote controller is detected.

E3/E5 6832

MA communication send error

Only MA Remote controller is detected.

E3/E5 6833 MA communication send error

Only MA Remote controller is detected.

E0/E4 6834

MA communication receive error

Only MA Remote controller is detected.

EF 7100 Total capacity error EF 7101 Capacity code error EF 7102 Connecting excessive number of units and branch boxes

EF 7105

Address setting error

EF 7130

Incompatible unit combination

Notes:

1. 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.

2. The check codes displayed on the units may be different between the error source and others. In that case, please refer to the check code of error source by displayed attribute and address.

3. Refer to the service manual of indoor unit or remote controller for the detail of error detected in indoor unit or remote controller.

OCH632A

Check code

Abnormal points and detection methods Causes and check points

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

Wire breakage or contact failure of connector CN2 or

CN4

Malfunction of communication circuit to power circuit

board on outdoor multi controller circuit board

Malfunction of communication circuit on outdoor

power circuit board

●Diagnosisofdefectives

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

Diagnosis Remedy

0403

(Ed)

Serial communication error

Yes

Are they connected normally?

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

board.

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

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

Replace the outdoor multi controller circuit board if it does not recover. Replace the outdoor power circuit board.

OCH632A

Check code

Abnormal points and detection methods Causes and check points

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

●exceeds110

[230°F] continuously for 5 minutes

●exceeds125 [257°F]

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

converted to saturation temperature exceeds 40

[104°F] during

defrosting, and TH4 exceeds 110 [230°F].

TH4: Thermistor <Compressor> LEV: Electronic expansion valve

Malfunction of stop valve

Over-heated compressor operation caused by

shortage of refrigerant

Defective thermistor

Defective outdoor multi controller circuit board

LEV performance failure

Defective indoor controller board

Clogged refrigerant system caused by foreign

object

Refrigerant shortage

(Refrigerant liquid accumulation in compressor while indoor unit is OFF/thermo-OFF.)

●Diagnosisofdefectives

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

Diagnosis Remedy

1102

(U2)

Compressor temperature trouble

Yes

Is 5101 displayed when restarted?

Is the outdoor stop valve (liquid/gas)

fully open?

Is there a refrigerant leak?

Is there any abnormality on

connectors/wires such as a disconnection,

half-disconnection or breakage?

Check the connection for thermistor wiring and indoor controller board connector.

Refer to the diagnosis of check code 5101.

Open the stop valve (liquid/gas) fully.

Repair the refrigerant leakage.

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

(5101)

(1102)

(no leak)

Continue to the next page

Chart 1 of 2

OCH632A

Check code

1102

(U2)

Compressor temperature trouble

●Diagnosisofdefectives

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

Diagnosis Remedy

Yes

Continued from the previous page

Is the voltage normal value?

Is it free from any trace of over-

heating or burning?

Is there a resistance detected?

Check the voltage and appearance of the outdoor multi controller circuit board.

Disconnect the thermistor wiring to check the resistance.

Disconnect the indoor LEV wiring and check the resistance.

Replace the outdoor multi controller circuit board.

Replace the thermistor.

Replace the indoor LEV.

Replace the indoor controller board.

Chart 2 of 2

OCH632A

Check code

1302

(UE)

High pressure trouble

Abnormal points and detection methods Causes and check points

(1) High pressure abnormality (63H operation)

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

4.15 MPaG

[602 PSIG])

(2) High pressure abnormality (63HS detected)

1. Abnormal if a pressure detected by 63HS is 4.31 MPaG [625 PSIG] or more during compressor operation.

2. Abnormal if a pressure detected by 63HS is 4.14 MPaG [600 PSIG] or more for 3 minutes during compressor operation.

63H : High pressure switch 63HS : High pressure sensor LEV : Electronic expansion valve SV1 : Solenoid valve TH7 : Thermistor <Ambient>

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 multi controller circuit board connector

Defective outdoor multi controller circuit board

Short-cycle of indoor unit

Decreasedairow,cloggedlter,ordirtonindoorunit.

Malfunction or locked indoor fan motor

Decreasedair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 multi controller circuit board

●Diagnosisofdefectives

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

Diagnosis Remedy

Chart 1 of 4

Yes

Is 5201 displayed when restarted?

Is the outdoor stop valve (liquid/ gas) fully open?

Does the outdoor fan rotate while the operation?

Is the indoor unit short-cycled?

Does the indoor fan rotate while the operation?

Refer to the diagnosis of check code 5201.

Open the stop valve (liquid/gas) fully.

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

Solve the short-cycle.

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

(5201)

(short-cycled)

(no short-cycle)

(1302)

Continue to the next page

OCH632A

Check code

1302

(UE)

High pressure trouble

●Diagnosisofdefectives

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

Diagnosis Remedy

Chart 2 of 4

Yes

Istheindoorunitlterclogged? Cleanthelter.

(Cloggedlter)

(No clog)

Continued from the previous page

Is there dirt on the indoor heat exchanger?

Is the outdoor unit short-cycled?

Is there dirt on the outdoor heat exchanger?

Are the pipes clogged or broken?

Wash the indoor heat exchanger.

Solve the short cycle.

Wash the outdoor heat exchanger.

Defective pipes

(dirty)

(short-cycled)

(no dirt)

(no short-cycle)

Continue to the next page

Disconnect the TH7 wiring and check the resistance.

OCH632A

Check code

1302

(UE)

High pressure trouble

●Diagnosisofdefectives

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

Diagnosis Remedy

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

Replace the indoor controller board.

Check the voltage and appearance of the indoor controller board.

Check the resistance of SV1.

Chart 3 of 4

Yes

Continued from the previous page

Is there a resistance detected?

Replace the TH7.

Replace the indoor LEV.

Disconnect the indoor LEV wiring to check the resistance.

Continue to the next page

OCH632A

Check code

1302

(UE)

High pressure trouble

●Diagnosisofdefectives

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

Diagnosis Remedy

Chart 4 of 4

Yes

Continued from the previous page

Is there a voltage(*) detected?

Replace the SV1.

Replace the 63HS.

Replace the outdoor multi controller circuit board.

Yes

Is the connector for outdoor

multi controller circuit board 63H

disconnected or loose?

Reconnect the connector or connect it tightly.

Check the 63HS voltage.

Is there a resistance detected?

Yes

*For the voltage, refer to "8-8. HOW

TO CHECK THE COMPONENTS".

OCH632A

Check code

1500

(U7)

Superheat due to low discharge temperature trouble

Abnormal points and detection methods Causes and check points

Abnormalifthedischargesuperheatiscontinuouslydetected−15 [−27°F](*)

or less for 5 minutes even though the indoor LEV has minimum open pulse after the compressor starts operating for 10 minutes.

LEV : Electronic expansion valve TH4 : Thermistor <Compressor> 63HS : High pressure sensor

*At this temperature, conditions for the abnormality detection will not be

satisedifnoabnormalityisdetectedoneitherTH4or63HS.

Disconnection or loose connection of TH4

Defective holder of TH4

Disconnection of LEV coil

Disconnection of LEV connector

LEV performance failure

●Diagnosisofdefectives

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

Diagnosis Remedy

Chart 1 of 2

0 700 k" 10

· 410 k"

250 k"

160 k"

104 k"

Yes

Is the TH4 wiring disconnected?

Is the resistance normal?

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

Connect the wiring properly.

Replace the

TH4.

Connect the connector properly, or replace the LEV.

Check the resistance of TH4.

Check the connector contact and wiring of the indoor LEV.

Disconnect the indoor LEV wiring to check the resistance.

(disconnected)

(connected properly)

Continue to the next page

OCH632A

Check code

1500

(U7)

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

Chart 2 of 2

*For the voltage, refer to "8-8. HOW

TO CHECK THE COMPONENTS".

Is there a resistance detected?

Replace the indoor LEV.

Yes

Continued from the previous page

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

Is there a voltage(*) detected?

Replace the indoor controller board.

Replace the 63HS.

Replace the outdoor multi controller circuit board.

Check the voltage and appearance of the indoor controller board.

Check the 63HS voltage.

OCH632A

Check code

1501

(U2)

Refrigerant shortage trouble

Abnormal points and detection methods Causes and check points

(1)Abnormalwhenallofthefollowingconditionsaresatisedfor15

consecutive minutes:

1. The compressor is operating in HEAT mode.

2. Discharge superheat is 80: [144_F] or more.

3. Difference between TH7 and TH3 applies to the formula of

(TH7−TH3<5:[9_F])

4. The saturation temperature converted from a high pressure sensor

detects below 35: [95_F].

(2)Abnormalwhenallofthefollowingconditionsaresatised:

1. The compressor is in operation.

2. When cooling, discharge superheat is 80: [144_F] or more, and

the saturation temperature converted from a high pressure sensor is

over−40:[−40_F].

3. When heating, discharge superheat is 90:[162_F] or more.

Defective operation of stop valve (not fully open)

Defective thermistor

Defective outdoor multi controller circuit board

Indoor LEV performance failure

Gas leakage or shortage

Defective 63HS

TH3 : Thermistor <Outdoor liquid pipe> TH7 : Thermistor <Ambient> LEV : Electronic expansion valve 63HS : High pressure sensor

●Diagnosisofdefectives

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

Diagnosis Remedy

Chart 1 of 2

Yes

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

Is there a refrigerant leak?

Is 5104 displayed when restarted?

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

Refer to the diagnosis of check code 5104.

Check relevant thermistor wirings and connector contacts of the outdoor multi controller circuit board.

Disconnect the thermistor wiring and check the resistance.

Open the stop valve (ball valve) fully.

Repair the refrigerant leak.

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

(leaking)

(5104)

(no leaking)

(1501)

Continue to the next page

OCH632A

Check code

1501

(U2)

Refrigerant shortage trouble

●Diagnosisofdefectives

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

Diagnosis Remedy

Chart 2 of 2

*For the voltage, refer to "8-8. HOW

TO CHECK THE COMPONENTS".

Yes

Continued from the previous page

Is there a voltage(*) detected?

Is the voltage normal value?

Is it free from any trace of over-

heating or burning?

Is there a resistance detected?

Replace the outdoor multi controller circuit board.

Replace the 63HS.

Replace the indoor LEV.

Replace the indoor controller board.

Check the 63HS voltage.

Check the voltage and appearance of the outdoor multi controller circuit board.

Disconnect the indoor LEV wiring and check the resistance.

Is there a resistance detected? Replace the thermistor.

OCH632A

Check code

1501

(U2)

Closed valve in cooling mode

Abnormal points and detection methods Causes and check points

Abnormal if stop valve is closed during cooling operation.

Abnormalwhen both of the following temperatureconditionsaresatised

for 20 minutes or more during cooling operation.

1.TH22j−TH21j]−2°C[−3.6_F]

2.TH23j−TH21j]−2°C[−3.6_F]

Note:

Forindoorunit,theabnormalityisdetectedifanoperatingunitsatisesthe

condition.

Outdoor liquid/gas valve is closed.

Malfunction of outdoor LEV (LEV1)(blockage)

TH21: Indoor intake temperature thermistor (RT11 or TH1) TH22: Indoor liquid pipe temperature thermistor (RT13 or TH2) TH23: Indoor gas pipe temperature thermistor (TH-A to E) LEV: Electronic expansion valve

●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

(liquid/gas)

fully open?

Open the

outdoor stop valve (liquid/gas)

fully

Yes

Disconnect the outdoor LEV wiring to check the resistance.

Yes

Replace the outdoor LEV.

Replace the outdoor multi controller circuit board.

Is there a resistance detected?

OCH632A

Check code

Abnormal points and detection methods Causes and check points

The purpose of the check code is to prevent indoor unit from freezing or

dewcondensationwhichiscausedwhenarefrigerantkeepsowinginto

the unit in STOP.

Abnormalwhenallofthefollowingconditionsaresatised:

1. The compressor is operating in COOL mode.

2. 15 minutes have passed after the startup of the compressor, or the change in the number of operating indoor units is made (including a change by turning thermo-ON/OFF).

3.Afterthecondition2aboveissatised,thethermistorofindoorunit

in STOP detects TH22j [−5 [23°F] for 5 consecutive minutes.

Wrong piping connection between indoor unit and

branch box

Miswiring between indoor unit and branch box

Miswiring of LEV in branch box

Malfunction of LEV in branch box

●Diagnosisofdefectives

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

Diagnosis Remedy

1503

(P6)

Indoor HEX freezing protection

Yes

Connect the piping and wiring to the same port.

Is there a resistance detected?

Connect the LEV wiring to the intended port properly.

Disconnect the LEV wiring of branch box to check the resistance.

Replace the LEV coil.

Check the port which the piping and wiring between the indoor unit and branch box is connected. Is the piping and wiring connected to the same port?

Check the port which the LEV wiring of branch box is connected. Is the wiring connected to the same port as the corresponding branch box?

Yes

Replace the LEV assy in branch box.

Yes

OCH632A

Check code

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conditionsissatisedfor

3 min. or more during heating operation

1.TH22j−TH21j[−10°C[−18°F]

2.TH23j−TH21j[−10°C[−18°F]

3. TH22j [ 3: [37.4°F]

4. TH23j [ 3: [37.4°F]

Note:

Forindoorunit,theabnormalityisdetectedifanoperatingunitsatisesthe

condition.

4-way valve failure

Disconnection or failure of 4-way valve coil

Clogged drain pipe

Disconnection or loose connection of connectors

Malfunction of input circuit on outdoor multi controller circuit board

Defective outdoor power circuit board

●Diagnosisofdefectives

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

Diagnosis Remedy

Is the connector for outdoor multi

controller circuit board or 4-way valve

coil disconnected or loose?

Reconnect the connector or connect it tightly.

Yes

Disconnect the connector for outdoor multi controller circuit board or 4-way valve coil to check the resistance.

Replace the 4-way valve.

Replace the outdoor multi controller circuit board.

Is the detected voltage normal?

Is it free from any trace of over-heating

or burning?

Is there a resistance detected?

Check the voltage and appearance of the outdoor multi controller circuit board.

Yes

1508

(EF)

Yes

Replace the outdoor multi controller circuit board.

OCH632A

Check code

Abnormal points and detection methods Causes and check points

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

Closed stop valve

Decrease of power supply voltage

Looseness, disconnection, or wrong phase of

compressor wiring connection

Model selection error on indoor controller board or

outdoor multi controller circuit board

Defective compressor

Defective outdoor power circuit board

●Diagnosisofdefectives

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

Diagnosis Remedy

4100

(UF)

Compressor current interruption (Locked compressor)

Chart 1 of 2

Yes

Is the stop valve

(liquid/gas)

fully

open?

Is the power supply voltage normal?

Are they set properly?

Open the stop valve

(liquid/gas) fully

•

Check the looseness, disconnection, or

breakage of compressor wiring.

•Ensurepowersupplyfromthefacility.

(Check for power supply open phase.)

Set the model selection switch correctly, then restart.

Check the stop valve.

Check the power supply voltage.

Check if the model selection switch is set correctly on the indoor controller board or outdoor multi controller circuit board.

Turn the power OFF to check for looseness, disconnection, or wrong phase

of compressor wiring connection.

Continue to the next page

OCH632A

Check code

4100

(UF)

Compressor current interruption (Locked compressor)

●Diagnosisofdefectives

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

Diagnosis Remedy

Chart 2 of 2

Yes

Are they connected properly?

Is the compressor faulty grounded?

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

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

Replace the compressor (Defective compressor).

Check whether the compressor is faulty grounded or not.

Continued from the previous page

OCH632A

Check code

Abnormal points and detection methods Causes and check points

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

Closed outdoor stop valve

Decrease of power supply voltage

Looseness, disconnection, or wrong phase of

compressor wiring connection

Model selection error on indoor controller board or

outdoor multi controller circuit board

Defective compressor

Defective outdoor power circuit board

Defective outdoor multi controller circuit board

Malfunction of indoor/outdoor unit fan

Short-cycle of indoor/outdoor unit

●Diagnosisofdefectives

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

Diagnosis Remedy

4210

(UP)

Compressor overcurrent interruption

Chart 1 of 2

Yes

Is the stop valve

(liquid/gas)

fully

open?

Is the power supply voltage normal?

Are they set properly?

Open the stop valve

(liquid/gas)

fully.

•

Check the looseness, disconnection, or

breakage of compressor wiring.

•Ensurepowersupplyfromthefacility.

(Check for power supply open phase.)

Set the model selection correctly.

Check the outdoor stop valve.

Check whether the power supply voltage is normal or not.

Check if the model selection switch is set correctly on the indoor controller board or outdoor multi controller circuit board.

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

Continue to the next page

OCH632A

Check code

4210

(UP)

Compressor overcurrent interruption

●Diagnosisofdefectives

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

Diagnosis Remedy

Chart 2 of 2

Yes

Are they connected properly?

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

Continued from the previous page

Does it operate normally?

Are those units short-cycled?

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

Does it operate normally?

Check the DC fan motor.

Remove factor(s) causing the short-cycle.

Replace the compressor.

Replace the outdoor power circuit board.

Replace the outdoor multi controller circuit board.

Check the operation of indoor/outdoor fan motors.

Check for indoor/outdoor short-cycle.

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

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

Replace the outdoor multi controller circuit board.

(short-cycled)

(no short-cycled)

OCH632A

Check code

Abnormal points and detection methods Causes and check points

Abnormal if any of following symptoms are detected;

●DecreaseofDCbusvoltageto200V(Vmodel),350V(Ymodel)

●IncreaseofDCbusvoltageto400V(Vmodel),760V(Ymodel)

●DC bus voltage stays at 310 V or less for consecutive 30 seconds when

the operational frequency is over 20 Hz.

●Whenanyofthefollowingconditionsissatisfiedwhilethedetectionvalue

of primary current is 0.1 A or less.

1. The operational frequency is 40 Hz or more.

2. The compressor current is 6 A or more.

Decrease/increase of power supply voltage

LI open-phase (Y model only) Primary current sensor failure

Disconnection of compressor wiring

Malfunction of 52C

Disconnection or contact failure of CN52C

Defective outdoor power circuit board

Malfunction of 52C driving circuit on outdoor multi

controller circuit board

Disconnection of CN5

Disconnection of CN2

Malfunction of primary current detecting circuit on

outdoor power circuit board

●Diagnosisofdefectives

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

Diagnosis Remedy

4220

(U9)

Voltage shortage/overvoltage/PAM error/L1open phase/primary

current sensor error/power synchronization signal error

Theblacksquare(■)indicatesaswitchposition.

Chart 1 of 2

Yes

7,8

Is there any abnormality on wirings?

Which sub code is displayed?

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

Is there any abnormality on PAM wirings?

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

circuit board?

Is there any abnormality at the PAM power supply circuit on the

outdoor multi controller circuit board?

a. LI open-phase (Y model only) b. Disconnection of compressor wiring c. Disconnection of CN52C (V model only) d. Disconnection of CN5 e. Disconnection of CN2

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

Check the power supply facility.

Correct the wiring.

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

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

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

OFF

1 2 3 4 5 6 7 8

SW1 Setting

Display on LED1,2

2 3 4 5 6 7 8

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

3: PAM error (V model only) 6: Primary current sensor trouble 7: Undervoltage trouble 8: Overvoltage trouble

Continue to the next page

OCH632A

Check code

4220

(U9)

Voltage shortage/overvoltage/PAM error/L1open phase/primary

current sensor error/power synchronization signal error

●Diagnosisofdefectives

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

Diagnosis Remedy

Theblacksquare(■)indicatesaswitchposition.

Chart 2 of 2

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

Yes

7,8 6

Y model

V model

Is CN5 connected properly without any contact failure?

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

Correct the CN5 wiring.

Continued from the previous page

Is there any breakage of ACCT

onthenoiseltercircuitboard?

Is the power supply normal?

Is the bus voltage normal?

The difference of the voltage between the

one read by the LED1 and 2, and the one at

the test points listed above is large.

Replacethenoiseltercircuitboard.

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

•Decreaseofpowersupplyvoltage

•L1open-phase

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

Replace the outdoor power circuit board (Trouble of an input current detection circuit is suspected).

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

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

Check the bus voltage at the test points listed below on the outdoor power circuit board using a tester. V model: CNDC 1-2pin Y model: N2-P2

OFF

1 2 3 4 5 6 7 8

SW1 Setting

Display on LED1,2

Unit

0–999.9 V

Is the outdoor unit

V model or Y model?

OCH632A

Check code

Abnormal points and detection methods Causes and check points

AbnormalifTH8 detectsa temperatureoutside thespecied rangeduring

compressor operation.

TH8:

Thermistor <Heat sink>

Blocked outdoor fan

Malfunction of outdoor fan motor

Blockedairowpath

Rise of ambient temperature

Characteristic defect of thermistor

Malfunction of input circuit on outdoor power circuit board

Malfunction of outdoor fan driving circuit

●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?

4230

(U5)

Heat sink temperature trouble

0  180kΩ 25

 50kΩ

 17kΩ

 8kΩ

 4kΩ

TH8 temp. - resistance characteristic

Yes

Is 5110 displayed when restarted?

Does the fan rotate during compressor operation?

Is there any obstacle which

blocksanairowaroundthe

heat

sink

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

Is the resistance normal?

Refer to the diagnosis of check code 5110.

Refer to the diagnosis of check code 4400.

Replace the thermistor (Defective thermistor).

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

Improvetheairowpath.

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

Check the wiring and connector connection TH8.

Check the resistance of TH8.

(air path blocked)

(no obstacle)

OCH632A

Check code

Abnormal points and detection methods Causes and check points

Abnormalifbothofthefollowingconditionsaresatised:

1. Overcurrent of DC bus or compressor is detected during compressor operation.

2. Inverter power module is determined to be defected.

Short-circuit caused by looseness or disconnection

of compressor wiring

Defective compressor

Defective outdoor power circuit board

●Diagnosisofdefectives

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

Diagnosis Remedy

4250

(U6)

Power module trouble

Yes

Are they connected properly?

Is the check code <4250> still

displayed?

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

Replace the outdoor power circuit board or the outdoor multi controller circuit board (Defective outdoor power circuit board).

Replace the compressor (Defective compressor).

Turn the power OFF to check for looseness

or disconnection of the compressor wiring.

Disconnect the compressor wiring

(U-V-W phase).

Turn ON the SW7-1(*) on the outdoor

multi controller circuit board.

Operate the unit.

* SW7-1 ON: Ignore 5300(UH) error.

OCH632A

Check code

Abnormal points and detection methods Causes and check points

Abnormal if no rotational frequency is detected, or detected a value

outsidethespeciedrangeduringfanmotoroperation.

Malfunction of fan motor

Disconnection of CNF connector

Defective outdoor multi controller circuit board

●Diagnosisofdefectives

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

Diagnosis Remedy

4400

(U8)

Fan trouble (Outdoor unit)

*For the detail, refer to "Check method of DC

fan motor (fan motor/outdoor multi controller circuit board)" in chapter 8-7.

Yes

Is the fuse melting?

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

Is the voltage normal?

•

Replace the outdoor multi controller circuit board.

•Replacethedefectivefanmotor.*

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

Replace the outdoor multi controller circuit board.

Replace the fan motor.

Check the fuse on the outdoor multi controller circuit board.

Check the fan motor connector (CNF1 and CNF2) for a disconnection or looseness.

While the breaker is OFF, disconnect the compressor wirings (U/V/W) from the outdoor power circuit board

While the breaker is OFF, disconnect the fan motor

connector CNF1 and CNF2.

When 5 minutes have passed since turning ON the breaker, turn SW7-1 ON.

Check the voltage of the outdoor multi controller circuit board.

Test points are;

· VDC approx. 310 to 350 V DC (fan connector 1–4)

· VCC approx. 15 V DC (fan connector 5–4)

· VCC approx. 0–6.5 V DC (fan connector 6–4)

(melting)

(Not melting)

Note: Set SW7-1 OFF after the troubleshooting completes.

OCH632A

Check code

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°F] or less Short: 217 [423°F] or more TH4: Thermistor <Compressor>

Disconnection or contact failure of connectors

Characteristic defect of thermistor

Defective outdoor multi controller circuit board

●Diagnosisofdefectives

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

Diagnosis Remedy

−99.9–999.9

5101

(U3)

Compressor temperature thermistor (TH4) open/short

Theblacksquare(■)indicatesaswitchposition.

Yes

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

Is the detected resistance normal?

Is the detected temperature normal?

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

Replace the thermistor.

Replace the outdoor multi controller circuit board (Malfunction of thermistor circuit).

No abnormality (A connector contact failure is suspected.)

Check the wiring and connector connection of TH4.

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

Check a temperature of TH4.

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

SW1 Setting

OFF

Display on LED1, 2

Unit

−99.9–999.9

41 2 5 6 7 83

OCH632A

Check code

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 seconds to 10 minutes after compressor starts, during defrosting operation, or for 10 minutes after returning from the defrosting operation.)

Open:−40 [−40°F]orless

Short: 90 [162°F] or more TH6: Thermistor <Suction pipe>

Disconnection or contact failure of connectors

Characteristic defect of thermistor

Defective outdoor multi controller circuit board

●Diagnosisofdefectives

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

Diagnosis Remedy

5102

(U4)

Suction pipe temperature thermistor (TH6) open/short

Theblacksquare(■)indicatesaswitchposition.

Yes

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

Is the detected resistance normal?

Is the detected temperature normal?

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

Replace the thermistor.

Replace the outdoor multi controller circuit board (Malfunction of thermistor circuit).

No abnormality ( A connector contact failure is suspected.)

Check the wiring and connector connection of TH6.

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

Check a temperature of TH6.

OFF

1 2 3 4 5 6 7 8

SW1 Setting

Display on LED1,2

Unit

−99.9–999.9

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

OCH632A

Check code

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 seconds to 10 minutes after compressor starts, during defrosting operation, or for 10 minutes after returning from the defrosting operation.)

Open:−40 [−40°F]orless

Short: 90 [162°F] or more TH3: Thermistor <Outdoor liquid pipe>

Disconnection or contact failure of connectors

Characteristic defect of thermistor

Defective outdoor multi controller circuit board

●Diagnosisofdefectives

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

Diagnosis Remedy

5105

(U4)

Outdoor liquid pipe temperature thermistor (TH3) open/short

Theblacksquare(■)indicatesaswitchposition.

SW1 Setting

OFF

Display on LED1, 2

Unit

−99.9–999.9

41 2 5 6 7 83

Yes

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

Is the detected resistance normal?

Is the detected temperature normal?

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

Replace the thermistor.

Replace the outdoor multi controller circuit board (Malfunction of thermistor circuit).

No abnormality (A connector contact failure is suspected.)

Check the wiring and connector connection of TH3.

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

Check a temperature of TH3.

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

OCH632A

Check code

5106

(U4)

Ambient 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 [162°F] or more TH7: Thermistor <Ambient>

Disconnection or contact failure of connectors

Characteristic defect of thermistor

Defective outdoor multi controller circuit board

●Diagnosisofdefectives

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

Diagnosis Remedy

Theblacksquare(■)indicatesaswitchposition.

SW1 Setting

OFF

Display on LED1, 2

Unit

−99.9–999.9

41 2 5 6 7 83

Yes

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

Is the detected resistance normal?

Is the detected temperature normal?

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

Replace the thermistor.

Replace the outdoor multi controller circuit board (Malfunction of thermistor circuit).

No abnormality (A connector contact failure is suspected.)

Check the wiring and connector connection of TH7.

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

Check a temperature of TH7.

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

The detected temperature of TH7 can be displayed by an operation of SW1 on the outdoor multi controller circuit board.

OCH632A

Check code

5109

(U4)

HIC pipe 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 [162°F] or more TH2: Thermistor <

HIC pipe>

Disconnection or contact failure of connectors

Characteristic defect of thermistor

Defective outdoor multi controller circuit board

●Diagnosisofdefectives

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

Diagnosis Remedy

Theblacksquare(■)indicatesaswitchposition.

Yes

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

Is the detected resistance normal?

Is the detected temperature normal?

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

Replace the thermistor.

Replace the outdoor multi controller circuit board (Malfunction of thermistor circuit).

No abnormality (A connector contact failure is suspected.)

Check the wiring and connector connection of TH2.

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

Check a temperature of TH2.

OFF

1 2 3 4 5 6 7 8

SW1 Setting

Display on LED1,2

Unit

−99.9–999.9 °C

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

OCH632A

Check code

5110

(U4)

Heat sink temperature thermistor(TH8) open/

short

Abnormal points and detection methods Causes and check points

Abnormal if TH8 (Internal thermistor) detects to be open/short.

P112/125/140V model <Internal thermistor> Open: 170.3 [338.5°F] or more

Short:−35.1 [−31.2°F]orless

P112/125/140Y model Open: 102 [215.6°F] or more

Short:−34.8 [−30.6°F]orless

TH8: Thermistor <Heat sink>

Disconnection or contact failure of connectors

Characteristic defect of thermistor

Defective outdoor multi controller circuit board

●Diagnosisofdefectives

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

Diagnosis Remedy

outdoor

Theblacksquare(■)indicatesaswitchposition.

SW1 Setting

OFF

Display on LED1, 2

Unit

−99.9–999.9

41 2 5 6 7 83

Yes

Is there any abnormality such

as a disconnection, looseness or

breakage?

Is the detected resistance normal?

Is the detected temperature normal?

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

Replace the thermistor.

Replace the outdoor multi controller circuit board (Malfunction of thermistor circuit).

No abnormality (A connector contact failure is suspected.)

Check the wiring and connector connection of TH8.

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

Check a temperature of TH8.

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

The detected temperature of TH8 can be displayed by an operation of SW1 on the outdoor multi controller circuit board.

Is it a model with internal

thermistor?

OCH632A

Check code

5201

(F5)

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 or less 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.

Defective high pressure sensor

Decrease of internal pressure caused by gas

leakage

Disconnection or contact failure of connector

Malfunction of input circuit on outdoor multi controller

circuit board

●Diagnosisofdefectives

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

Diagnosis Remedy

Theblacksquare(■)indicatesaswitchposition.

63HS: High pressure sensor

SW1 Setting

OFF

Display on LED1, 2

Unit

−99.9–999.9

kgf/F

41 2 5 6 7 83

Yes

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

Is the detected internal pressure normal?

Is the detected pressure normal?

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

Checktherefrigerantcircuit,andrell

refrigerant after repairing the leakage.

Replace the 63HS.

Replace the outdoor multi controller circuit board.

Check the wiring and connector connection.

Check an internal pressure of the refrigerant circuit.

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

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

OCH632A

Check code

5202

(F3)

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.

Defective low pressure sensor

Decrease of internal pressure caused by gas

leakage

Disconnection or contact failure of connector

Malfunction of input circuit on outdoor multi controller

circuit board

●Diagnosisofdefectives

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

Diagnosis Remedy

Theblacksquare(■)indicatesaswitchposition.

63LS: Low pressure sensor

Yes

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

Is the detected internal pressure normal?

Is the detected pressure normal?

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

Checktherefrigerantcircuit,andrell

refrigerant after repairing the leakage.

Replace the 63LS.

Replace the outdoor multi controller circuit board.

Check the wiring and connector connection.

Check an internal pressure of the refrigerant circuit.

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

OFF

1 2 3 4 5 6 7 8

SW1 Setting

Display on LED1,2

Unit

−99.9–999.9 kgf/cm²

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

board.

OCH632A

Check code

5300

(UH)

Primary current error

Abnormal points and detection methods Causes and check points

Abnormal if any of the following conditions is detected:

Primary current sensor detects any of the following conditions (single

phase unit only):

Secondary current sensor detects 25 A or more.

Secondary current sensor detects 1.0 A or less.

Decrease/trouble of power supply voltage

Disconnection of compressor wiring

Current sensor trouble on outdoor power circuit

board

Wiring through current sensor (penetration type) is

not done.

●Diagnosisofdefectives

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

Diagnosis Remedy

Ambient

temperature

10 consecutive-

second detection

One-time detection

TH7 > 3: 37 A 40 A TH7 [ 3: 40 A 43A

(Three-phase)

Yes

Is the power supply single phase?

Is there any abnormality

such as a disconnection,

looseness, or breakage?

The power supply voltage might be decreased or abnormal. Check the power supply facility.

Connect the compressor wiring properly.

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

Checkthepowerspecicationofthe

outdoor unit.

Check the value on the secondary current sensor during the error.

(Single-phase)

Does it satisfy the condition 1?

SW1 Setting

OFF

Display on LED1, 2

Unit

0–999.9

Arms

41 2 5 6 7 83

The secondary current sensor value during the error can be displayed by an operation of SW1 on the outdoor multi controller circuit board.

Does it satisfy the condition 2 or 3?

Check the compressor wiring.

OCH632A

Check code

Abnormal points and detection methods Causes and check points

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

6600

(A0)

Duplex address error

Yes

Is there any unit with the same address?

Does it operate normally?

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.

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).

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

Turn the power back ON.

OCH632A

Check code

Abnormal points and detection methods Causes and check points

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

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

●Diagnosisofdefectives

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

Diagnosis Remedy

6602

(A2)

Transmission processor hardware error

Yes

A wiring work was performed while the power OFF.

Does it operate normally?

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.

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).

Turn the power back ON.

OCH632A

Check code

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 10 minutes.

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.

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.

●Diagnosisofdefectives

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

Diagnosis Remedy

6603

(A3)

Transmission bus BUSY error

Yes

Is the transmission line miswired?

Does it operate normally?

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 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.

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.

Turn the power back ON.

(miswired)

(Not miswired)

OCH632A

Check code

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.

Accidental disturbance such as noise or lightning

surge

Hardware malfunction of transmission processor

●Diagnosisofdefectives

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

Diagnosis Remedy

6606

(A6)

Signal communication error with transmission processor

Yes

Does it operate normally?

Replace the controller. (Defect of error source controller).

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).

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.

OCH632A

Check code

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 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: 200 m

·On remote controller line: (12 m)

Decline of transmission voltage/signal due to

unmatched transmission line types

·Types for shield line: CVVS, CPEVS, or MVVS

·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

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.

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.

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.

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

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

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

6607

(A7)

No ACK error

Chart 1 of 4

OCH632A

Check code

6607

(A7)

No ACK error

Abnormal points and detection methods Causes and check points

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.

While the indoor unit is operating with multi

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

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.

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

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.

Chart 2 of 4

OCH632A

Check code

6607

(A7)

No ACK error

Chart 3 of 4

●Diagnosisofdefectives

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

Diagnosis Remedy

Yes

The transmission line is connected properly.

It is not exceeding the tolerance.

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

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

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

Connect the transmission line properly, then perform the procedure 1.

Is the abnormality reproduced?

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.

Check the address switch on the source of abnormality.

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

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.

Procedure 1:

Continue to the next page

OCH632A

Check code

6607

(A7)

No ACK error

Chart 4 of 4

●Diagnosisofdefectives

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

Diagnosis Remedy

Yes

Is the correct kind of transmission line used?

Is it operating in multi refrigerant system?

Is the address information correct?

Does it operate normally?

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

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

Continued from the previous page

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

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).

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

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

Complete

OCH632A

Check code

6608

(A8)

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.

Continuous failure of transmission due to noise, etc

Decline of transmission voltage/signal caused by

tolerance over on transmission line

·At the furthest end: 200 m

·On remote controller line: (12 m)

Decline of transmission voltage/signal due to

unmatched transmission line types

·Types for shield line: CVVS, CPEVS, or MVVS

·Line diameter: 1.25 E or more

Accidental malfunction of error source controller

●Diagnosisofdefectives

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

Diagnosis Remedy

No response frame error

Yes

Does it operate normally?

The transmission line is connected properly.

It is not exceeding the tolerance.

Is correct kind of transmission line used?

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.

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.

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.

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

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

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

OCH632A

Check code

6831, 6834

(E0/E4)

MA communication receive error

Abnormal points and detection methods Causes and check points

Detected in remote controller or indoor unit:

When the main or sub remote controller cannot receive signal from

indoor unit which has the "0" address. When the sub remote controller cannot receive signal. When the indoor controller board cannot receive signal from remote

controller or another indoor unit. When the indoor controller board cannot receive signal.

Contact failure of remote controller wirings Irregular Wiring

(A wiring length, number of connecting remote controllers or indoor units, or a wiring thickness does

notmeettheconditionsspeciedinthechapter

"Electrical Work" in the indoor unit Installation Manual.)

Malfunction of the remote controller sending/

receiving circuit on indoor unit with the LED2 is blinking.

Malfunction of the remote controller sending/

receiving circuit

Remote controller transmitting error caused by noise

interference

●Diagnosisofdefectives

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

Diagnosis Remedy

Check the remote controller for main-sub setting.

Conduct the Remote Controller Diagnosis 2 or more times.

Is "RC NG"

displayed?

Turn the power back ON.

Is "RC 6832" or

"ERC01" to "ERC66"

displayed?

No abnormality It might be caused by an external noise, so check the transmission line.

Yes

Chart 1 of 2

Yes

Is the check code

<6831> or <6834>still

displayed?

Is there only 1 remote controller

set as the main controller?

Does "HO"or "Please

wait" disappear within

6 minutes?

Is "RC OK" displayed on all remote controllers?

Set one remote controller to main remote controller, and the other to sub.

Disconnect and reconnect the connector CN3A, then turn the power back ON.

Note:

It takes 6 seconds at maximum until the result is displayed.

Continue to the next page

No abnormality A connector or wiring contact failure is suspected.

Replace the remote controller.

Replace the indoor controller board with the LED2 is blinking.

OCH632A

Check code

●Diagnosisofdefectives

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

Diagnosis Remedy

6831, 6834

(E3/E5)

MA communication receive error

Chart 2 of 2

No abnormality It might be caused by an external noise, so check the transmission line to remove the factor(s).

Yes

Is the wiring connected

properly, meeting the condition?

Connectthewiringproperlyasspeciedin

the chapter "Electrical Work" in the indoor unit Installation Manual.

Refer to the chapter "Electrical Work".

Continued from the previous page

OCH632A

Check code

Chart 1 of 2

6832, 6833

(EF)

MA communication send error

Abnormal points and detection methods Causes and check points

Detected in remote controller or indoor unit. There are 2 remote controllers set as main.

Malfunction of remote controller sending/receiving

circuit

Malfunction of sending/receiving circuit on indoor

controller board

Remote controller transmitting error caused by noise

interference

●Diagnosisofdefectives

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

Diagnosis Remedy

Check the remote controller for main-sub setting.

Conduct the Remote Controller Diagnosis more than 2 times.

Is the check code

<6832> or <6833> still

displayed?

Is there only 1 remote controller

set as the main controller?

Set one remote controller to main remote controller, and the other to sub.

Disconnect and reconnect the connector CN3A, then turn the power back ON.

Note:

It takes 6 seconds at maximum until the result is displayed.

No abnormality A connector or wiring contact failure is suspected.

Yes

Continue to the next page

Is "RC NG"

displayed?

Turn the power back ON

Is "RC 6832" or

"ERC01" to "ERC66"

displayed?

No abnormality It might be caused by an external noise, so check the transmission line.

Yes

Does "HO"or "Please

wait" disappear within

6 minutes?

Is "RC OK" displayed on all remote controllers?

Replace the remote controller.

Replace the indoor controller board with the LED2 is blinking.

Yes

OCH632A

Check code

●Diagnosisofdefectives

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

Diagnosis Remedy

6832, 6833

(EF)

MA communication send error

Chart 2 of 2

No abnormality It might be caused by an external noise, so check the transmission line to remove the factor(s).

Yes

Is the wiring connected

properly, meeting the condition?

Connectthewiringproperlyasspeciedin

the chapter "Electrical Work" in the indoor unit Installation Manual.

Refer to the chapter "Electrical Work".

Continued from the previous page

OCH632A

Check code

Abnormal points and detection methods Causes and check points

Whenthetotalcapacityofconnectedindoorunitsexceedsthespecied

capacity (130% of the outdoor unit capacity), a check code <7100> is displayed.

The total capacity of connected indoor units

exceedsthespeciedcapacity.(Thetotalcodesof

indoor units excluding PWFY unit, Cylinder unit, and Hydrobox. )

PUMY

WITHOUT PWFY

unit, Cylinder

unit, or Hydrobox

connection

WITH PWFY unit, Cylinder

unit, or Hydrobox

connection

ecodan unit,

Cylinder unit,

or Hydrobox

connection

P112 35 28 20 P125 41 31 20 P140 47 38 20

The model name code of the outdoor unit is

registered wrongly.

●Diagnosisofdefectives

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

Diagnosis Remedy

7100

(EF)

Total capacity error

Yes

Is it set properly?

Is the total under 130% of outdoor unit capacity?

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

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

Check the total capacity of connected indoor units.

Correct it so that the total capacity of connected indoor units is under 130% of the outdoor unit capacity.

Set the switch properly.

Complete

OCH632A

Check code

Abnormal points and detection methods Causes and check points

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

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

The connectable indoor units are:

P112 to P140 model: P15 to P140 model (code 3 to 28)

When connecting via branch box: P15 to P100 model

(code 3 to 20)

PWFY unit: P100 model (code 20)

●Diagnosisofdefectives

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

Diagnosis Remedy

7101

(EF)

Capacity code error

Yes

Is it set properly? Set the switch properly.

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

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

OCH632A

Check code

Abnormal points and detection methods Causes and check points

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

Connecting more indoor units and branch boxes 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 up to 2 branch boxes

Connectable up to 1 Air to Water unit (PWFY unit,

Cylinder unit, or Hydrobox)

When connecting PWFY unit, Cylinder unit, or

Hydrobox, connect at least 1 indoor unit (other than Air to Water unit).

Connectable up to 1 PEFY-P·VMH-E-F

●Diagnosisofdefectives

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

Diagnosis Remedy

7102

(EF)

Connecting excessive number of units

and branch boxes

Yes

Is an indoor unit connected?

Does it exceed the limit?

Connect indoor unit.

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.

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

Check if at least 1 indoor unit is connected.

Check whether the connecting unit exceeds the limit or not.

100

OCH632A

Mitsubishi PUMY-P125VKM3-BS, PUMY-P140YKM3, PUMY-P112YKM3-BS, PUMY-P140VKM3-BS, PUMY-P140YKM3-BS Technical & Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual