Mitsubishi PUHZ-P250YHA, PUHZ-P200YHA3R3, PUHZ-P250YHA3, PUHZ-P250YHA3R1, PUHZ-P250YHA3R2 Service Manual

...

SERVICE MANUAL

No. OCH424

REVISED EDITION-D

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

R410A

November 2010

Outdoor unit [Model names]

PUHZ-P200YHA PUHZ-P250YHA PUHZ-P200YHA3

PUHZ-P250YHA3

[Service Ref.]

PUHZ-P200YHA PUHZ-P250YHA PUHZ-P200YHA3 PUHZ-P200YHA3R1 PUHZ-P200YHA3R2 PUHZ-P200YHA3R3 PUHZ-P250YHA3 PUHZ-P250YHA3R1 PUHZ-P250YHA3R2 PUHZ-P250YHA3R3

PUHZ-P200YHA3R1/R2/R3 PUHZ-P250YHA3R1/R2/R3

Note:

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

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

CONTENTS

1. TECHNICAL CHANGES

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

2. REFERENCE MANUAL

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

3. SAFETY PRECAUTION

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

4. FEATURES

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

5. SPECIFICATIONS

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

6. DATA

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

7. OUTLINES AND DIMENSIONS

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

8. WIRING DIAGRAM

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

9. WIRING SPECIFICATIONS

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

10.

REFRIGERANT SYSTEM DIAGRAM

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

11. TROUBLESHOOTING

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

12. FUNCTION SETTING

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

13.

MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER

....

14. EASY MAINTENANCE FUNCTION

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

15. DISASSEMBLY PROCEDURE

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

PARTS CATALOG (OCB424)

Revision:

• PUHZ-P200/250YHA3R3 have been added in REVISED EDITION-D.

• Some descriptions have been modified.

• Please void OCH424 REVISED EDITION-C.

REFERENCE MANUAL

Model name Service Ref.

Service

Manual No.

PLA-RP35/50/60/71/100/125/140BA PLA-RP71/100/125/140BA2

PLA-RP35/50/60/71/100/125/140BA(#2).UK PLA-RP35/50/60/71BA

.UK PLA-RP71/100/125BA2.UK PLA-RP140BA2R1.UK

OCH412 OCB412

PCA-RP71/125HA

OC329

PCA-RP71/125HA(#1)

PCA-RP50/60/71/100/125/140GA PCA-RP50/60/71/100/125/140GA(#1)

OC328

PCA-RP50GA2 PCA-RP50GA2(#1)

PKA-RP35/50GAL PKA-RP35/50GAL(#1)

OC330

PKA-RP60/71/100FAL PKA-RP60/71/100FAL(#1) PKA-RP50FAL2 PKA-RP50FAL2(#1)

OC331

PEAD-RP60/71/100GA

PEAD-RP60/71/100GA(#1).UK

HWE0506

PEA-RP200/250/400/500GA

PEA-RP200/250/400/500GA.TH-AF PEA-RP200/250GA.TH-AFMF

HWE0708A

PEAD-RP50/60/71/125/140EA PEAD-RP35/100EA2

PEAD-RP50/60/71/125/140EA(#1).UK PEAD-RP35/100EA2(#1).UK

HWE0521

PKA-RP60/71/100KAL

PKA-RP60/71/100KAL.TH

OCH452

OCB452

PCA-RP50/60/71/100/125/140KA

OCH454

OCB454

PKA-RP35/50HAL

OCH453 OCB453

PLA-RP100BA3 PLA-RP100BA3

OCH459 OCB459

PEAD-RP35/50/60/71/100/125/140JA(L)

PEAD-RP35/50/60/71/100/125/140JA(L)(R1).UK

HWE08130 BWE08240 BWE09220

INDOOR UNIT’S SERVICE MANUAL

TECHNICAL CHANGES

PUHZ-P200YHA3R2 PUHZ-P200YHA3R3 PUHZ-P250YHA3R2 PUHZ-P250YHA3R3

• The mounting location of CHARGE PLUG has been changed.

• THERMISTOR has been changed (Discharge, black → Shell, white (These are compatible)).

• The part numbers have been modified. (The parts that are new numbers are compatible with old numbers) <For all models> FRONT PANEL, TOP PANEL, FUSE (F3, 4) <For 200Y models> ACCUMULATOR

PUHZ-P200YHA3R1 PUHZ-P200YHA3R2 PUHZ-P250YHA3R1 PUHZ-P250YHA3R2

• POWER BOARD (P.B.) has been changed.

• CONTROLLER BOARD (C.B.) has been changed. (S/W version up)

PUHZ-P200YHA3 PUHZ-P200YHA3R1 PUHZ-P250YHA3 PUHZ-P250YHA3R1

• FAN GRILLES and FRONT PANEL have been changed.

PUHZ-P200YHA PUHZ-P200YHA3 PUHZ-P250YHA PUHZ-P250YHA3

• OUTDOOR CONTROLLER BOARD (C.B.) has been changed.

(S/W has been changed: Corresponding to the additional combination between PKA-RP•HAL/KAL, PCA-RP•KA and PEAD-RP•JA(L))

SAFETY PRECAUTION

Cautions for units utilizing refrigerant R410A

3-2. CAUTIONS RELATED TO NEW REFRIGERANT

Use new refrigerant pipes.

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

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

In case of using the existing pipes for R22, be careful with the followings.

· Be sure to clean the pipes and make sure that the insides of the pipes are clean.

· Change flare nut to the one provided with this product. Use a newly flared pipe.

· 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.

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

3-1. ALWAYS OBSERVE FOR SAFETY

Before obtaining access to terminal, all supply circuits must be disconnected.

Preparation for the repair service

· Prepare the proper tools.

· Prepare the proper protectors.

· Provide adequate ventilation.

· After stopping the operation of the air conditioner, turn off the power-supply breaker.

· Discharge the condenser before the work involving the electric parts.

Precautions during the repair service

· Do not perform the work involving the electric parts with wet hands.

· Do not pour water into the electric parts.

· Do not touch the refrigerant.

· Do not touch the hot or cold areas in the refrigerating cycle.

· When the repair or the inspection of the circuit needs to be done without turning off the power, exercise great caution not to touch the live parts.

Gravimeter

Unit

[3] Service tools

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

No. Tool name Specifications 1 Gauge manifold · Only for R410A

· Use the existing fitting

specifications

. (UNF1/2)

· Use high-tension side pressure of 5.3MPa·G or over. 2 Charge hose · Only for R410A

· Use pressure performance of 5.09MPa·G or over. 3 Electronic scale 4 Gas leak detector · Use the detector for R134a, R407C or R410A. 5 Adaptor for reverse flow check · Attach on vacuum pump. 6 Refrigerant charge base 7 Refrigerant cylinder · Only for R410A · Top of cylinder (Pink)

· Cylinder with syphon 8 Refrigerant recovery equipment

[1] Cautions for service

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

Be sure to use a filter drier for new refrigerant.

[2] Additional refrigerant charge

When charging directly from cylinder

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

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

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.

1Thickness 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.)

2Dimensions of flare cutting and flare nut

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

Use torque wrench corresponding to each dimension.

3Tools 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(inch)

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

24.0

9.0

13.0

16.2

19.4

23.3

Nominal

dimensions(inch)

Flare cutting dimensions

Outside

diameter

Dimension A

( )

-0.4

(mm)

R410A R22

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

6.35

9.52

12.70

15.88

19.05

17.0

22.0

26.0

29.0

36.0

17.0

22.0

24.0

27.0

36.0

Nominal

dimensions(inch)

Flare nut dimensions

Outside

diameter

Dimension B

(mm)

R410A R22

Gauge manifold Charge hose Gas leak detector

Refrigerant recovery equipment Refrigerant cylinder Applied oil

Safety charger

Charge valve Vacuum pump

Flare tool

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

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

Prevent compressor malfunction when charging refrigerant by

spraying liquid refrigerant Prevent gas from blowing out

when detaching charge hose Vacuum drying and air purge

Flaring work of piping

Bend the pipes Cut the pipes Weld the pipes Charge refrigerant 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

FEATURES

CHARGELESS SYSTEM PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT. (Max. 30m)

The refrigerant circuit with LEV (Linear Expansion Valve) and Accumulator always control the optimal refrigerant level regardless of the length (30 m max. and 5 m min.) of piping. The additional refrigerant charging work during installation often causes problems. It is completely eliminated by chargeless system. This unique system improves the quality and reliability of the work done. It also helps to speed up the installation time.

PUHZ-P200YHA PUHZ-P250YHA PUHZ-P200YHA3 PUHZ-P250YHA3

PUHZ-P200YHA3R1 PUHZ-P250YHA3R1 PUHZ-P200YHA3R2 PUHZ-P250YHA3R2 PUHZ-P200YHA3R3 PUHZ-P250YHA3R3

SPECIFICATIONS

A A

/min(L/s

)

dB mm(in.) mm(in.) mm(in.)

kg(lbs)

L mm(in.) mm(in.)

Power supply (phase, cycle, voltage) Running current Max. current External finish Refrigerant control Compressor Model

Motor output Starter type Protection devices

Crankcase heater Heat exchanger Fan Fan(drive) % No. Fan motor output Airflow Defrost method Noise level

Dimensions

Weight Refrigerant

Charge Oil (Model) Pipe size O.D.

Connection method Between the indoor &

outdoor unit

Mode

Cooling Heating

D H

Liquid

Gas Indoor side Outdoor side Height difference Piping length

Service Ref.

PUHZ-P250YHA

PUHZ-P250YHA3 PUHZ-P250YHA3R1 PUHZ-P250YHA3R2 PUHZ-P250YHA3R3

PUHZ-P200YHA

PUHZ-P200YHA3 PUHZ-P200YHA3R1 PUHZ-P200YHA3R2 PUHZ-P200YHA3R3

Cooling

9.47

Munsell 3Y 7.8/1.1

Linear Expansion Valve

Hermetic

YHA: ANB52FFJMT or ANB52FFPMT

YHA3(R1, R2, R3): ANB52FFPMT

Line start

—

Plate fin coil

Propeller fan % 2

0.150 + 0.150 130(2170)

Reverse cycle

950(37-3/8)

330 + 30(13+1-3/16)

1,350(53-1/8)

R410A

2.30(FV50S)

Flared

Flared & Brazing

Max. 30m Max. 70m

Heating

9.88

Cooling

11.0 21

5.5

Heating

12.0

HP switch

Discharge thermo

3 phase 50Hz, 400V

OUTDOOR UNIT

REFRIGERANT PIPING

4.7

59 59

126(278)

5.8(12.8)

9.52(3/8)

25.4(1)

59 59

YHA, YHA3R3: 133(294)/

YHA3(R1,R2): 135(298)

7.1(15.7)

12.7(1/2)

25.4(1)

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

PUHZ-P200YHA PUHZ-P250YHA PUHZ-P200YHA3(R1/R2/R3) PUHZ-P250YHA3(R1/R2/R3)

COOLING

MODE

HEATING

SPL(dB)

LINE

DATA

6-1. REFILLING REFRIGERANT CHARGE (R410A : kg)

6-2. COMPRESSOR TECHNICAL DATA

Piping length (one way)

10m

20m

30m

40m

50m

Factory

charged

4.8

5.9

5.3

6.5

5.8

7.1

6.7

8.3

7.6

9.5

60m

8.5

10.7

70m

9.4

11.9

5.8

7.1

Service Ref.

PUHZ-P200YHA PUHZ-P200YHA3 PUHZ-P200YHA3R1 PUHZ-P200YHA3R2 PUHZ-P200YHA3R3

PUHZ-P250YHA PUHZ-P250YHA3 PUHZ-P250YHA3R1 PUHZ-P250YHA3R2 PUHZ-P250YHA3R3

U-V U-W W-V

Unit

Compressor model

Winding

Resistance

(  )

(at 20°C)

ANB52FFJMT ANB52FFPMT

0.30

PUHZ-P200, 250YHA

PUHZ-P200, 250YHA3 PUHZ-P200, 250YHA3R1 PUHZ-P200, 250YHA3R2 PUHZ-P200, 250YHA3R3

ANB52FFPMT

0.30

For pipe longer than 30 m, additional charge is required.

6-3. NOISE CRITERION CURVES

1.5m

MICROPHONE

UNIT

GROUND

PEA-RP250GAPEA-RP200GA

PEA-RP250GA

PEA-RP200GA

3, 50

400

1.18

1.00

2.302.00

PUHZ-P250YHA

PUHZ-P250YHA3

PUHZ-P250YHA3R1/R2/R3

PUHZ-P200YHA

PUHZ-P200YHA3

PUHZ-P200YHA3R1/R2/R3

3, 503, 50

400

HeatingCooling

12.011.0

9.889.47

19,000 22,400 22,000 27,000

7.21 7.36 8.44 8.47

74.074.873.775.6

45.149.643.249.7

-2.37.1

-0.88.0

7.57.5

7.57.5 2027

2027

1519

39.115.4

35.717.1 735

735

624

0.86

0.81

0.150.18

— —

2.67

(27.2)

2.94

(30.0)

2.96

(30.2)

2.59

(26.4)

0.62

(6.32)

0.86

(8.75)

0.87

(8.87)

0.64

(6.53)

Electrical circuitRefrigerant circuitIndoor side

Outdoor

side

Representative matching

SHF

Mode

Capacity

Input

Total

(kgf/%) (kgf/%)

Phase , Hz Voltage Input Current

Outdoor unit

Phase , Hz Voltage Current Discharge pressure Suction pressure Discharge temperature Condensing temperature Suction temperature Ref. pipe length

Intake air temperature

Discharge air temperature

Intake air temperature

V A

MPa MPa

°C °C °C

m °C °C °C °C °C

Indoor unit

D.B.

W.B.

D.B. D.B.

W.B.

The unit of pressure has been changed to MPa based on international SI system. The conversion factor is: 1(MPa)=10.2(kgf/cm²)

6-4. STANDARD OPERATION DATA

Rear piping cover

Front piping cover

Side Air Intake

Handle for moving

Piping Knockout Hole Details

637323

5527

4045

Power supply wiring hole

(2-:27Knockout)

Rear trunking hole

(Knockout)

Rear piping hole

(Knockout)

:92

922723

6373

4075

5519

Power supply wiring hole

(2-:27Knockout)

Right trunking hole

(Knockout)

Right piping hole

(Knockout)

:92

637323

5527

40 45

Power supply wiring hole

(2-:27Knockout)

Front trunking hole

(Knockout)

Front piping hole

(Knockout)

:92

Over

Less than

Piping and wiring connections

can be made from 4 directions:

front, right, rear and below.

4 PIPING-WIRING DIRECTIONS

3 FOUNDATION BOLTS2 SERVICE SPACE

1 FREE SPACE (Around the unit)

Please secure the unit firmly

with 4 foundation (M10) 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.

Explanation of particular details are

given in the installation manuals etc.

FOUNDATION

500

150

Service space

FREE

Over 10mm

Over 150mm

Over 1000mm

40560

175600175

33030

37028 19

417

60 37

2-12%36 oval holes

(Foundation Bolt M10)

2-U Shaped notched holes

(foundation Bolt M10)

Side Air Intake

Rear Air Intake

Air Discharge

Installation Feet

999 995

*1 A

*2 339

950

322

371 635

1350

*1 439

Handle for moving

Terminal Connections

Left···Power supply wiring

Right···Indoor/Outdoor wiring

Service Panel

(

Earth terminal

Brazing





)

PUHZ-P250YHA

PUHZ-P250YHA3

PUHZ-P200YHA

PUHZ-P200YHA3

:9.52

(3/8 inch)

:12.7

(1/2 inch)

421

447





· · · ·Refrigerant GAS pipe connection (FLARE):19.05 (3/4 inch)



· · · ·Refrigerant LIQUID pipe connection (FLARE) *1· · · ·Indication of STOP VALVE connection location

*2· · · ·Refrigerant GAS PIPE connection(BRAZING) O.D:25.4

Example of Notes

14514514522030

81 219

Drain hole

(5-:33)

Bottom piping hole

(Knockout)

Side Air Intake

Air Intake

Rear Air Intake

Handle for moving

PUHZ-P200YHA PUHZ-P250YHA PUHZ-P200YHA3 PUHZ-P250YHA3

Unit : mm

7 OUTLINES AND DIMENSIONS

Rear piping cover

Front piping cover

Side Air Intake

Handle for moving

Piping Knockout Hole Details

637323

5527

4045

Power supply wiring hole

(2-:27Knockout)

Rear trunking hole

(Knockout)

Rear piping hole

(Knockout)

:92

922723

6373

4075

5519

Power supply wiring hole

(2-:27Knockout)

Right trunking hole

(Knockout)

Right piping hole

(Knockout)

:92

637323

5527

40 45

Power supply wiring hole

(2-:27Knockout)

Front trunking hole

(Knockout)

Front piping hole

(Knockout)

:92

Over

Less than

Piping and wiring connections

can be made from 4 directions:

front, right, rear and below.

4 PIPING-WIRING DIRECTIONS

3 FOUNDATION BOLTS2 SERVICE SPACE

1 FREE SPACE (Around the unit)

Please secure the unit firmly

with 4 foundation (M10) 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.

Explanation of particular details are

given in the installation manuals etc.

FOUNDATION

500

150

Service space

40560

175600175

33030

37028 19

417

60 37

2-12%36 oval holes

(Foundation Bolt M10)

2-U Shaped notched holes

(foundation Bolt M10)

Side Air Intake

Rear Air Intake

Air Discharge

Installation Feet

999 995

*1 A

*2 339

950

322

371 635

1350

*1 439

Handle for moving

Terminal Connections

Left···Power supply wiring

Right···Indoor/Outdoor wiring

Service Panel

(

Earth terminal

Brazing





)

PUHZ-P250YHA3R1

PUHZ-P250YHA3R2

PUHZ-P250YHA3R3

PUHZ-P200YHA3R1

PUHZ-P200YHA3R2

PUHZ-P200YHA3R3

:9.52

(3/8 inch)

:12.7

(1/2 inch)

421

447





· · · ·Refrigerant GAS pipe connection (FLARE):19.05(3/4 inch)



· · · ·Refrigerant LIQUID pipe connection (FLARE) *1· · · ·Indication of STOP VALVE connection location

*2· · · ·Refrigerant GAS PIPE connection (BRAZING) O.D:25.4

Example of Notes

14514514522030

81 219

Drain hole

(5-:33)

Bottom piping hole

(Knockout)

Side Air Intake

Air Intake

Rear Air Intake

Handle for moving

Over 10mm

Over 150mm

Over 1000mm

FREE

PUHZ-P200YHA3R1 PUHZ-P250YHA3R1 PUHZ-P200YHA3R2 PUHZ-P250YHA3R2 PUHZ-P200YHA3R3 PUHZ-P250YHA3R3

PUHZ-P200YHA PUHZ-P250YHA PUHZ-P200YHA3 PUHZ-P250YHA3 PUHZ-P200YHA3R1 PUHZ-P250YHA3R1 PUHZ-P200YHA3R2 PUHZ-P250YHA3R2 PUHZ-P200YHA3R3 PUHZ-P250YHA3R3

TH7/6

(RED)

TH3

(WHT)

TH4

(WHT)

TH7TH6 TH3 TH4

412121

t° t° t° t°

63H

LEV-A (WHT)

LEV-A

LED1

LED2

CNVMNT

(WHT)

CNMNT

(WHT)

CNM

(WHT)

141

63H

(YLW)

CN2

(WHT)

CN2

(WHT)

CNDM

(WHT)

CN3S

(WHT)

CN51

(WHT)

131315

X51

X52

SW7

SW6SW1

SW9

CN31

+1+1

SW5SW8SW4

SWP

CN4

(WHT)

1313

21S4

(WHT)

21S4

(GRN)

CNAC (WHT)

CNDC (PNK)

CNS

(WHT)

TRANS

CNF1 (WHT)

CNF2 (WHT)

MF1

MF2

C. B.

P. B .

CN5

(WHT)

LED2

SW1

SW11

SW12

LED3 LED4

TB7

LED1

LED5

2 1

CND

(WHT)

CN2M

(WHT)

M-NET ADAPTER

M-NET

ABS

When M-NET adapter is connected

1 2

CN4

(WHT)

CN5

(RED)

WHT

FUSE1

FUSE2

WHT

REDRED

MS 3~

POWER SUPPLY 3N~ 400V 50Hz

INDOOR UNIT

TB1

CNDC

(PNK)

CNL

(BLU)

3112

CNCT (RED)

CNAC2

(RED)

CNAC1

(WHT)

BLK

WHT

LO 1

LO 2

LO3

LI 1

LI 2

LI 3

RED

WHT

BLU

BLK

GRN/YLW

GD2GD1

RED

WHT

BLK

N. F.

TB2

DCL

ACL4

ORN

YLW

CY2

CY1

BRN

RED

WHT

BLK

X52A

BLK

TB-P2

TB-P1

TB-C1 TB-N1

CB1 CB2

TB-L1

TB-L2

TB-L3

SC-U

SC-V

SC-W

RED

MODEL

SW6

+1 MODEL SELECT

SW5-6 +2

12345678

+2 SW5 -1 to 5 : Function Switch

OFF

123456

OFF

200YHA

200YHA3

200YHA3R1

12345678

OFF

123456

OFF

12345678

OFF

123456

OFF

200YHA3R2 200YHA3R3

12345678

OFF

123456

OFF

250YHA3R2 250YHA3R3

250YHA

250YHA3

250YHA3R1

FUSE1, FUSE2

Connector<Connection for Option>

CN51

Relay

X51,X52

Connector<Connection for Option>

CN3S

TB1 MC

MF1,MF2 21S4 63H TH3 TH4 TH6 TH7 LEV-A

DCL

Terminal Block<Power Supply>

TB2 Terminal Block<Indoor/Outdoor>

Motor for Compressor Fan Motor Solenoid Valve (Four-Way Valve) High Pressure Switch

Thermistor<Outdoor Pipe>

SC-U/V/W

TB-L1/L2/L3

Connection Terminal<U/V/W-Phase>

Thermistor<Discharge> Thermistor<Outdoor 2-Phase Pipe> Thermistor<Outdoor>

Fuse<

T15AL250V>

Capacitor

Electronic Expansion Valve

Reactor

ACL4

Reactor

Connection Terminal<L1/L2/L3-Power supply>

P.B .

Power Circuit Board

Rush Current Protect Resistor

CB1,CB2

CY1,CY2

Main Smoothing Capacitor

Connection Terminal

Noise Filter Circuit Board Connection Terminal<

L1/L2/L3/NI-Power supply>

Connection Terminal<Ground>

52C Relay

N.F.

LI1/ LI2/LI3/NI LO1/ LO2/LO3

Connection Terminal<

L1/L2/L3-Power supply>

GD1,GD2

Controller Circuit Board

C.B.

TB-C1

X52A

Connection Terminal

TB-N1

SYMBOL

[LEGEND]

NAME SYMBOL NAME SYMBOL NAME

Connection Terminal

TB-P1

Connection Terminal

TB-P2

Switch<Function Setup> Switch<Function Setup>

Switch<Forced Defrost, Defect History Record Reset, Refrigerant Address> Switch<Test Operation> Switch<Function Switch> Switch<Model Select>

SW7

SW1 SW4

SW5 SW6

SW8

Switch

SW9

Switch<Pump Down>

SWP

Connector<Emergency Operation> LED<Operation Inspection Indicators>

CN31 F3,F4

CNMNT CNVMNT

CNDM

Connector < Connected for Option (Contact Input)>

Fuse< T6.3AL250V>

LED1,LED2

CNM

Connector<A-Control Service Inspection Kit>

Connector<Connection for Option>

Connector <Connected to Optional M-NET Adapter Board>

Terminal Block(M-NET connection)

Connector<Transmission> Connector<Power Supply>

LED<Power Supply:DC5V>

LED<Power Supply:DC12V>

LED<Connection to Outdoor Unit> LED<Transmission:Sending> LED<Transmission:Receiving>

Connector<M-NET communication>

SYMBOL

NAME

Switch<Address setting:2nd digit>

Switch<Status of communication> Switch<Address setting:1st digit>

TB7 CN5 CND CN2M SW1 SW11 SW12 LED1 LED2 LED3 LED4 LED5

M-NET ADAPTER

The black square (■) indicates a switch position.

8 WIRING DIAGRAM

9 WIRING SPECIFICATIONS

9-1. FIELD ELECTRICAL WIRING (power wiring specifications)

A-Control

Outdoor Unit

3 poles isolator

400V

3 phase

Isolator

A-Control

Indoor Unit

P200, P250

Outdoor unit model P200, 250 Outdoor unit Power supply

Phase Frequency & Voltage

3N~(3ph 4-wires), 50 Hz,

400 V Outdoor unit input capacity *1 Main switch (Breaker)

32 A

Outdoor unit power supply 5 % Min. 4 Indoor unit-Outdoor unit *2 Cable length 50 m : 3 % 4 (Polar)/Cable length 80 m : 3 % 6 (Polar) Indoor unit-Outdoor unit earth 1 % Min. 2.5 Remote controller-Indoor unit *3 2 % 0.3 (Non-polar)

Wiring

Wire No. %

size(mm²)

Circuit rating

Outdoor unit L1-N, L2-N, L3-N AC 230 V Indoor unit-Outdoor unit S1-S2 *4 AC 230 V Indoor unit-Outdoor unit S2-S3 *4 DC 24 V Remote controller-Indoor unit *4 DC 12 V

*1 A breaker with at least 3.0 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV). *2 Max. 80 m Total Max. including all indoor/indoor connection is 80 m. Use one cable for S1 and S2 and another for S3 as shown in the picture. Max. 50m Total Max. for PEA-200, 250, 400, 500 Wiring size 3%1.5 (Polar) *3 The 10 m wire is attached in the remote controller accessory. *4 The figures are NOT against the ground. S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are not electrically insulated by the transformer or other device.

Notes: 1. Wiring size must comply with the applicable local and national code.

2. Power supply cords and Indoor unit/Outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60245 IEC 57)

3. Use an earth wire which is longer than the other cords so that it will not become disconnected when tension is applied.

Warning: In case of A-control wiring, there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation between power line and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the S1, S2, S3 terminals when the power is energized. If isolator should be used between indoor unit and outdoor unit, please use 3-pole type.

Caution: Be sure to install N-line. Without N-line, it could damage the unit.



 Earth leakage breaker  wiring circuit breaker or

isolating switch



1 2

Indoor unit

S2 S3

S1 S2 S3

Unit power supply

Indoor/outdoor unit connection cable

Indoor unit

Outdoor unit

Remote controller

Outdoor unit

 Earth leakage breaker  wiring circuit breaker or

isolating switch

1 2

S1 S2 S3

Indoor/outdoor connection cable

Indoor unit

Remote controller

Unit power supply

Outdoor unit





Synchronized twin and triple system Electrical wiring

• Synchronized twin • Synchronized triple

The optional indoor power supply terminal kit is required.

* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.

If the indoor and outdoor units have separate power supplies, refer to the table below. If the optional indoor power supply terminal kit is used, change the indoor unit electrical box wiring referring to the figure in the right and the DIP switch settings of the outdoor unit control board.

Indoor power supply terminal kit (option) Indoor unit electrical box connector connection change Label affixed near each wiring diagram for the indoor and outdoor units Outdoor unit DIP switch settings (when using separate indoor unit/outdoor unit power supplies only)

Indoor unit specifications

Required Required

Required

Electric heater (For models with heater)

Connectors (connections when shipped from the factory are for indoor unit power supplied from outdoor unit.)

Indoor unit power supplied from outdoor unit (when shipped from factory)

If the indoor and outdoor units have separate power supplies, change the connections of the connectors as shown in the following figure.

Connectors

Indoor unit

control board

Separate indoor unit/outdoor unit power supplies

Electric heater (For models with heater)

S1 S2 S3

BLUE

YELLOW

CND

ORANGE

CND

ORANGE

S1 S2 S3

L N

YELLOW

BLUE

YELLOW

CND

Indoor unit

control board

* There are 3 types of labels (Labels A, B, and C). Affix the appropriate labels to

the units according to the wiring method.

ON OFF

Set the SW8-3 to ON.

1 2 (SW8)

        

Simultaneous twin/triple/four system

* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.

Outdoor unit power supply Earth leakage breaker Wiring circuit breaker or isolating switch Outdoor unit Indoor unit/outdoor unit connecting cables Remote controller Indoor unit Option Indoor unit power supply

*1. A breaker with at least 3.0 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV). The breaker shall be provided to ensure disconnection of all active phase conductor of the supply. *2. Max. 120 m *3. The 10 m wire is attached in the remote controller accessory. Max. 500 m *4. The figures are NOT always against the ground.

Notes: 1. Wiring size must comply with the applicable local and national code.

2. Power supply cables and indoor unit/outdoor unit connecting cables shall not be lighter than polychloroprene sheathed flexible cable. (Design 60245 IEC 57)

3. Install an earth longer than other cables.

Indoor unit model Indoor unit power supply Indoor unit input capacity

Main switch (Breaker)

Indoor unit power supply Indoor unit power supply earth Indoor unit-Outdoor unit

Indoor unit-Outdoor unit earth Remote controller-Indoor unit

Indoor unit L-N *4 Indoor unit-Outdoor unit S1-S2 *4 Indoor unit-Outdoor unit S2-S3 *4 Remote controller-Indoor unit *4

RP35~140

~/N (single), 50 Hz, 230 V

16 A

2% Min. 1.5 1% Min. 1.5 2% Min. 0.3

–

2 % 0.3 (Non-polar)

AC 230 V

– DC24 V DC12 V

Circuit

rating

Wiring

Wire No. % size

(mm

)



Indoor unit earth























L N

S1 S2 S3

1 2

L N

S1 S2 S3

1 2

S1 S2 S3

L N

S1 S2 S3

1 2

  

9-2. SEPARATE INDOOR UNIT/ OUTDOOR UNIT POWER SUPPLIES

S1 S2 S3

Indoor/outdoor unit connection cable

Indoor unit

Unit power supply

Outdoor unit

L2 L3



S1 S2 S3

L1 L2 L3 N







1 2

Remote controller

 Earth leakage breaker  wiring circuit breaker or

isolating switch

1:1 System (Indoor : PEA-200, 250) 1:2 System (Indoor : PEA-400, 500)

S1 S2 S3

Indoor/outdoor unit connection cable

Indoor unit

Unit power supply

Outdoor unit No.1

L2 L3



S1 S2 S3

L1 L2 L3 N

 Earth leakage breaker  wiring circuit breaker or

isolating switch







S1 S2 S3

Indoor/outdoor unit connection cable

TB4-1

TB4-2

Unit power supply

Outdoor unit No.2

L2 L3



S1 S2 S3



1 2

Remote controller

9-3. INDOOR – OUTDOOR CONNECTING CABLE

Be sure to connect the indoor-outdoor connecting cables directly to the units (no intermediate connections). Intermediate connections can lead to communication errors if water enters the cables and causes insufficient insulation to earth or a poor electrical contact at the intermediate connection point.

Indoor unit-Outdoor unit

Indoor/Outdoor separate power supply

Max. 120m

2 % Min. 0.3

—

Indoor unit-Outdoor unit earth

Wire No. % Size ($)

+ The optional indoor power supply terminal kit is necessary.

WIRING SPECIFICATIONS FOR 220-240 V 50 Hz (INDOOR-OUTDOOR CONNECTING CABLE)

Cross section of cable Wire size (mm2) Number of wires Polarity L (m)*6

Round

2.5 3

Clockwise : S1-S2-S3 * Pay attention to stripe of yellow and green.

(30)

Flat

2.5 3

Not applicable (Because center wire has no cover finish)

Not applicable

Flat

1.5 4

From left to right : S1-Open-S2-S3

(18)

Round

2.5 4

Clockwise : S1-S2-S3-Open *Connect S1 and S3 to the opposite angle.

(30)

*1 : Power supply cords of appliances shall not be lighter than design 60245 IEC or

227 IEC. *2 : In case that cable with stripe of yellow and green is available. *3 : In case of regular polarity connection (S1-S2-S3), wire size is 1.5 mm². *4 : In case of regular polarity connection (S1-S2-S3). *5 : In the flat cables are connected as this picture, they can be used up to 30 m.

*6 : Mentioned cable length is just a reference value.

It may be different depending on the condition of installation, Humidity or materials, etc.

(3C Flat cable × 2)

9-4. M-NET WIRING METHOD

(Points to note) (1) Outside the unit, transmission wires should stay away from electric wires in order to prevent electromagnetic noise from

making an influence on the signal communication. Place them at intervals of more than 5 cm. Do not put them in the same

conduit tube. (2) Terminal block (TB7) for transmission wires should never be connected to 220~240 V power supply. If it is connected, electronic parts on M-NET P.C. board may burn out. (3) Use 2-core × 1.25 mm² shield wire (CVVS, CPEVS) for the transmission wire. Transmission signals may not be sent or

received normally if different types of transmission wires are put together in the same multi-conductor cable. Never do this

because this may cause a malfunction.

It would be ok if M-NET wire (non-polar, 2-cores) is arranged in addition to the wiring for A-control.

(4) Earth only one of any appliances through M-NET transmission wire (shield wire). Communication error may occur due to

the influence of electromagnetic noise. “Ed” error will appear on the LED display of outdoor unit. “0403” error will appear on the central-control remote controller.

If there are more than 2 earthing spots on the shield wire, noise may enter into the shield wire because the earth wire and

shield wire form 1 circuit and the electric potential difference occurs due to the impedance difference among earthing spots.

In case of single spot earthing, noise does not enter into the shield wire because the earth wire and shield wire do not form

1 circuit. To avoid communication errors caused by noise, make sure to observe the single spot earthing method described in the

installation manual.

Group remote controller

Refrigerant address 00

M-NET address 01

A-control remote controller

Refrigerant address 00

M-NET address 02

Refrigerant address 00

M-NET address 03

Power supply unit for transmission wire

Central remote controller

M-NET transmission wire

Bad example (Multi spot earthing of shield wire)

Good example 1 (Single spot earthing of shield wire)

Power supply appliance

M-NET type outdoor unit

Central remote controller

Power supply appliance

M-NET type outdoor unit

M-NET transmission wire

M-NET type outdoor unit

Central remote controller

Power supply appliance

M-NET type outdoor unit

M-NET transmission wire

M-NET type outdoor unit

Good example 2 (Single spot earthing of shield wire)

9-4-3. Regulations in address settings

In case of multiple grouping system, M-NET and refrigerant address settings should be done as explained in the above section. Set the lowest number in the group for the outdoor unit whose refrigerant address is “00” as its M-NET address.

w Refrigerant addresses can be overlapped if they are in the different group.

w In group B, M-NET address of the outdoor unit whose refrigerant address is “00” is not set to the minimum in the group. As

“3” is right for this situation, the setting is wrong. Taking group A as a good sample, set the minimum M-NET address in the group for the outdoor unit whose refrigerant address is “00”.

9-4-1. M-NET address setting

In A-control models, M-NET address and refrigerant address should be set only for the outdoor unit. Similar to CITY MULTI system, there is no need to set the address of outdoor unit and remote controller. To construct a central control system, the setting of M-NET address should be conducted only upon the outdoor unit. The setting range should be 1 to 50 (the same as that of the indoor unit in CITY MULTI system), and the address number should be consecutively set in a same group.

Address number can be set by using rotary switches (SW11 for ones digit and SW12 for tens digit), which is located on the M-NET board of outdoor unit. (Initial setting: all addresses are set to “0”.)

9-4-2. Refrigerant address setting

In case of multiple grouping system (multiple refrigerant circuits in one group), indoor units should be connected by remote controller wiring (TB5) and the refrigerant address needs to be set. Leave the refrigerant addresses to “00” if the group setting is not conducted. Set the refrigerant address by using DIP SW1-3 to -6 on the outdoor controller board. [Initial setting: all switches are OFF. (All refrigerant addresses are “00”.)]

M-NET Address No.

Switch setting

SW11 ones digit

SW12 tens digit

OFF

Refrigerant address

OFF

System controller

A-control remote controller

Group A Group B Group C

A-control remote controller

TB5

A-control remote controller

Refrigerant address 00

M-NET address 01

Refrigerant address 00

M-NET address 02

Refrigerant address 01

M-NET address 03

Refrigerant address 00

M-NET address 04

Power supply unit for transmission wire

A-control remote controller

TB5

Group A Group B

Refrigerant address 00

M-NET address 01

Refrigerant address 01

M-NET address 02

Refrigerant address 00

M-NET address 04

Refrigerant address 01

M-NET address 03

Refrigerant address 02

M-NET address 05

System controller

Power supply unit for transmission wire

● M-NET wiring

(1) Use 2-core × 1.25mm² shield wire for electric wires. (Excluding the case connecting to system controller.) (2) Connect the wire to the M-NET terminal block. Connect one core of the transmission wire (non-polar) to M1 terminal and the other to M2. Peel the shield wire, twist the shield part to a string and connect it to S terminal. (3) In the system which several outdoor units are being connected, the terminal (M1, M2, S) on M-NET terminal block should be individually wired to the other outdoor unit’s terminal, i.e. M1 to M1, M2 to M2 and S to S. In this case, choose one of those outdoor units and drive a

screw to fix an earth wire on the plate as shown on the right figure.

Transmission

wire

Shield part

M-NET terminal block

Earth wire

M1 M2 S

Outdoor heat exchanger

Thermistor (TH3)

Thermistor (TH6)

Thermistor (TH7)

Distributor

Service port

(check)

Service port

(check)

Accumulator

Compressor

Refrigerant GAS pipe :25.4(:1 inch)

Refrigerant LIQUID pipe P200 : :9.52(:3/8 inch) P250 : :12.7(:1/2 inch)

Stop valve (with service port)

4-way valve

High pressure protect switch

Linear expansion valve

Thermistor (TH4)

Muffler

Ball valve

(#50)

Strainer

Strainer (#40)

Strainer (#100)

Refrigerant flow in cooling Refrigerant flow in heating

10 REFRIGERANT SYSTEM DIAGRAM

PUHZ-P200YHA PUHZ-P250YHA PUHZ-P200YHA3 PUHZ-P250YHA3 PUHZ-P200YHA3R1 PUHZ-P250YHA3R1 PUHZ-P200YHA3R2 PUHZ-P250YHA3R2

PUHZ-P200YHA3R3 PUHZ-P250YHA3R3

Outdoor heat exchanger

Thermistor (TH3)

Thermistor (TH6)

Thermistor (TH7)

Distributor

Service port (check)

Service port

(check)

Accumulator

Compressor

Refrigerant GAS pipe :25.4(:1 inch)

Refrigerant LIQUID pipe P200 : :9.52(:3/8 inch) P250 : :12.7(:1/2 inch)

Stop valve (with service port)

4-way valve

High pressure protect switch

Linear expansion valve

Thermistor (TH4)

Muffler

Ball valve

(#50)

Strainer

Strainer (#40)

Strainer (#100)

Refrigerant flow in cooling Refrigerant flow in heating

10-1. Refrigerant recovering (pump down)

Perform the following procedures to recover refrigerant while operating the indoor unit or the outdoor unit. 1 Turn on the power supply (circuit breaker).

w When power is supplied, make sure that “CENTRALLY CONTROLLED” is not displayed on the remote controller. If

“CENTRALLY CONTROLLED” is displayed, the refrigerant recovering (pump down) cannot be completed normally.

2 After the liquid stop valve is closed, set the SWP switch on the control board of the outdoor unit to ON. The compressor

(outdoor unit) and fan (indoor and outdoor units) start operating and refrigerant recovering operation begins. LED1 and LED2 on the control board of the outdoor unit are lit. w

Set the SWP switch (push-button type) to ON in order to perform refrigerant recovering operation only when the unit is stopped. However, refrigerant recovering operation cannot be performed until compressor stops even if the unit is stopped. Wait for 3 minutes until compressor stops and set the SWP switch to ON again.

3 Because the unit automatically stops in about 2 to 3 minutes after the refrigerant recovering operation (LED1 is not lit and

LED2 is lit), be sure to quickly close the gas stop valve.

w In case the outdoor unit is stopped when LED1 is lit and LED2 is not lit, open the liquid stop valve completely, and then

repeat step 2 3 minutes later.

w If the refrigerant recovering operation has been completed normally (LED1 is not lit and LED2 is lit), the unit will remain

stopped until the power supply is turned off.

4 Turn off the power supply (circuit breaker).

Warning:

When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes. The compressor may burst if air etc. get into it.

10-2. Start and finish of test run

• Operation from the indoor unit Execute the test run using the installation manual for the indoor unit.

• Operation from the outdoor unit By using the DIP switch SW4 on the control board of outdoor unit, test run can be started and finished, and its operation mode (cooling/heating) can be set up.

1 Set the operation mode (cooling/heating) using SW4-2. 2 Turn on SW4-1 to start test run with the operation mode set by SW4-2. 3 Turn off SW4-1 to finish the test run.

• There may be a faint knocking sound around the machine room after power is supplied, but this is no problem with product because the linear expansion valve is just moving to adjust opening pulse.

• There may be a knocking sound around the machine room for several seconds after compressor starts operating. But this is not a problem with product because the check valve itself generates the sound due to small pressure difference in the refrigerant circuit.

Note: The operation mode cannot be changed by SW4-2 during test run. (To change test run mode, stop the unit by SW4-1, change the operation mode and restart the test run by SW4-1.)

OFF

<SW4>





 Stop  Operation  Cooling  Heating

11 TROUBLESHOOTING

11-1. TROUBLESHOOTING

Present and past error codes are logged and displayed on the wired remote controller and control board of outdoor unit. Actions to be taken for service, which depends on whether or not the trouble is reoccurring at service, are summarized in the table below. Check the contents below before investigating details.

Unit conditions at service

Error code

Actions to be taken for service (summary)

The trouble is reoccurring.

Displayed

Not displayed

Judge what is wrong and take a corrective action according to “11-4. Self-diagnosis action table”.

Conduct troubleshooting and ascertain the cause of the trouble according to “11-5. Troubleshooting by inferior phenomena”.

The trouble is not reoccurring.

Logged

Not logged

Consider the temporary defects such as the work of protection devices in the refrigerant circuit including compressor, poor connection of wiring, noise and etc. Re-check the symptom, and check the installation environment, refrigerant amount, weather when the trouble occurred, matters related to wiring and etc. Reset error code logs and restart the unit after finishing service. There is no abnormality in electrical component, controller board, remote controller and etc.

Re-check the abnormal symptom. Conduct trouble shooting and ascertain the cause of the

trouble

according to “11-5. Troubleshooting

by inferior phenomena”. Continue to operate unit for the time being if the cause is not ascertained. There is no abnormality concerning of parts such as electrical component, controller board, remote controller and etc.

11-2. CHECK POINT UNDER TEST RUN

(1) Before test run

• After installation of indoor and outdoor units, piping work and electric wiring work, re-check that there is no refrigerant leak-

age, loosened connections and incorrect polarity.

• Measure impedance between the ground and the power supply terminal block (L, N) on the outdoor unit by 500V Megger and check that it is 1.0M" or over.

wDo not use 500V Megger to indoor/outdoor connecting wire terminal block (S1, S2, S3) and remote controller terminal block (1, 2). This may cause malfunction.

• Make sure that test run switch (SW4) is set to OFF before turning on power supply.

• Turn on power supply 12 hours before test run in order to protect compressor.

• For specific models which requires higher ceiling settings or auto-recovery feature from power failure, make proper changes

of settings referring to the description of “Selection of Functions through Remote Controller”.

• Make sure to read operation manual before test run. (Especially items to secure safety.)

[TEST] button

Pipe (liquid) temperature

Displays the remaining test run time.

"TEST RUN" and the currently selected operation mode are displayed alternately.







• In case of test run, the OFF timer will be activated, and the test run will automatically stop after 2 hours.

• The room temperature display section shows the pipe temperature of indoor units during the test run.

• Check that all the indoor units are running properly in case of simultaneous twin and triple operation. Malfunctions may not be displayed regardless of incorrect wiring. w1 After turning on the power supply, the system will go into startup mode, “PLEASE WAIT” will blink on the display section of the room temperature, and lamp (green) of the remote controller will flash. As to INDOOR BOARD LED, LED1 will be lit up, LED2 will either be lit up in case the address is 0 or turned off in case the address is not 0. LED3 will blink. As to OUTDOOR BOARD LED, LED1 (green) and LED2 (red) will be lit up. (After the startup mode of the system finishes, LED2 (red) will be turned off.) In case OUTDOOR BOARD LED is digital display, — and — will be displayed alternately every second.

• If one of the above operations does not function correctly, the causes written below should be considered. Find causes from the symptoms. The below symptoms are under test run mode. “Startup” in the table means the display status of w1 written above.

Remote Controller Display

Symptoms in test run mode

OUTDOOR BOARD LED Display

Cause

Remote controller displays “PLEASE WAIT”, and

cannot be operated.

After power is turned on, “PLEASE WAIT” is displayed for 3 minutes, then error code is displayed.

No display appears even when remote controller operation switch is turned on. (Operation lamp does not light up.)

Display appears but soon disappears even when remote controller is operated.

• After power is turned on, “PLEASE WAIT” is displayed for 2 minutes during

system startup. (Normal)

• Incorrect connection of outdoor terminal block (L

1, L2, L3 and

S1, S2, S3.)

• Outdoor unit’s protection device connector is open.

• Incorrect wiring between the indoor and outdoor unit (Polarity is wrong for S1, S2, S3.)

• Remote controller transmission wire short.

• There is no outdoor unit of address 0. (Address is other than 0.)

• Remote controller transmission wire open.

• After canceling function selection, operation is not possible for about 30 seconds. (Normal)

After “startup” is displayed, only green lights up. <00> After “startup” is displayed, green(once) and red(once) blink alternately. <F1> After “startup” is displayed, green(once) and red(twice) blink alternately. <F3, F5, F9> After “startup” is displayed, green(twice) and red(once) blink alternately. <EA. Eb>

After “startup” is displayed, only green lights up. <00>

< > indicates digital display.

2. Press TEST button twice.

1. Turn on the main power supply.

3. Press OPERATION SWITCH button.

4. Press AIR DIRECTION button.

5. Check the outdoor unit fan for correct running.

6. Press the ON/OFF button to reset the test run in progress.

7. Register the contact number.

While the room temperature display on the remote controller is “PLEASE WAIT”, the remote controller is disabled. Wait until “PLEASE WAIT” disappears before using remote controller. “PLEASE WAIT” appears for about 2 minutes after power supply is turned on. +1

The outdoor unit features automatic capacity control to provide optimum fan speeds. Therefore, the fan keeps running at a low speed to meet the current outside air condition unless it exceeds its available maximum power. Then, in actuality, the fan may stop or run in the reverse direction depending on the outside air, but this does not mean malfunction.

Check for correct motion of auto-vanes.

Cooling mode:

Check if cool air blows and water is drained. Heating mode: Check if warm air blows. (It takes a little while until warm air blows.)

The TEST RUN appears on the screen.

Operating procedures







w Press the remote controller’s CHECK button twice to perform self-diagnosis. See the table below for the contents of LCD display.

LCD

Contents of trouble

P1 P2 P4 P5 P6 P8 P9 Fb

Abnormality of room temperature thermistor Abnormality of pipe temperature thermistor/Liquid Abnormality of drain sensor/Float switch connector open Drain overflow protection is working. Freezing/overheating protection is working. Abnormality of pipe temperature Abnormality of pipe temperature thermistor/Cond./Eva Abnormality of indoor controller board

LCD

Contents of trouble

U1~UP F3~F9 E0~E5 E6~EF

----

FFFF

Malfunction outdoor unit Malfunction

outdoor unit Remote controller transmitting error Indoor/outdoor unit communication error No error history No applied unit

Forced compressor stop (due to water leakage abnormality)

LED1

(microprocessor power supply)

LED2

(remote controller)

LED3

(indoor/outdoor communication)

Lights when power is supplied. Lights when power is supplied for wired remote controller. The indoor unit should be connected to the outdoor unit with address “0” setting.

Flashes when indoor and outdoor unit are communicating.

See the table below for details of the LED display (LED 1, 2, 3) on the indoor controller board.

ON/OFF

TEMP

FAN

VANE

MODE

CHECK

LOUVER

TEST RUN

AUTO STOP

AUTO START

min

TEST RUN

RESET

SET

CLOCK









,

Test run [for wireless remote controller]

Measure an impedance between the power supply terminal block on the outdoor unit and ground with a 500V Megger and check that it is equal to or greater than 1.0M".

1 Turn on the main power to the unit. 2 Press the button twice continuously.

(Start this operation from the status of remote controller display

turned off.) A and current operation mode are displayed. 3 Press the ( ) button to activate mode, then

check whether cool air is blown out from the unit. 4 Press the ( ) button to activate mode, then

check whether warm air is blown out from the unit. 5 Press the button and check whether strong air is blown out

from the unit. 6 Press the button and check whether the auto vane operates

properly. 7 Press the ON/OFF button to stop the test run.

Note:

• Point the remote controller towards the indoor unit receiver

while following steps 2 to 7.

• It is not possible to run in FAN, DRY or AUTO mode.

MODE

COOL

HEAT

TEST RUN

FAN

VANE

TEST RUN

11-3. HOW TO PROCEED "SELF-DIAGNOSIS"

11-3-1. When a Problem Occurs During Operation

If a problem occurs in the air conditioner, the indoor and outdoor units will stop, and the problem is shown in the remote controller display.

 [CHECK] and the refrigerant address are displayed on the temperature display , and the error code and unit number are displayed alternately as shown below. (If the outdoor unit is malfunctioning, the unit number will be "00".)

 In the case of group control, for which one remote controller controls multiple refrigerant systems, the refrigerant address and error code of the unit that first experienced trouble (i.e., the unit that transmitted the error code) will be displayed.

 T o clear the error code, press the button.

ON/OFF

When using remote-/local-controller combined operation, cancel the error code after turning off remote operation. During central control by a MELANS controller, cancel the error code by pressing the

ON/OFF

button.

11-3-2. Self-Diagnosis During Maintenance or Service

Since each unit has a function that stores error codes, the latest check code can be recalled even if it is cancelled by the remote controller or power is shut off.

Check the error code history for each unit using the remote controller.



Switch to self-diagnosis mode.



Press the

CHECK

button twice within 3 seconds. The display content

will change as shown below.



Set the unit number or refrigerant address you want to diagnose.



Press the [TEMP] buttons ( and ) to select the desired number or address. The number (address) changes between [01] and [50] or [00]



Display self-diagnosis results.



Reset the error history.

Display the error history in the diagnosis result display screen (see step





















Error code (2 or 4 digits)

(Alternating Display)

Address (3 digits) or unit number (2 digits)

The refrigerant address will begin to flash approximately 3 seconds after being selected and the self-diagnosis process will begin.

Unit number or refrigerant address to be diagnosed

Error code (2 or 4 digits)

(Alternating Display)

Address (3 digits) or unit number (2 digits)

and

[15].

Transmission data from remote controller Transmission data on transmission path

When the number of data errors is "02":

 Press the

ON/OFF

button twice within 3 seconds. The self-diagnosis

address or refrigerant address will blink.

When the error history is reset, the display will look like the one shown below. However, if you fail to reset the error history, the error content will be displayed again.

 Cancel self-diagnosis.

Self-diagnosis can be cancelled by the following 2 methods.

 Press the

CHECK

button twice within 3 seconds.  Self-diagnosis will be cancelled and the screen will return to the previous state in effect before the

start of self-diagnosis.

 Press the

ON/OFF

button.  Self-diagnosis will be cancelled and the indoor unit will stop.

11-3-3. Remote Controller Diagnosis

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

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

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

 Switch to the remote controller self-diagnosis mode.

 Press the

CHECK

button for 5 seconds or more. The display content

will change as shown below.

 Press the

FILTER

button to start self-diagnosis.

 Remote controller self-diagnosis result

[When the remote controller is functioning correctly]

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

ing circuit is defective.

The remote controller must be replaced with a new one.

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

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

(Error display 3)

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

 To cancel remote controller diagnosis

 Press the

CHECK

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

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

Power on indicator

• "CHECK" lights, and refrigerant address "00" blinks.

• Check that the remote controller's display has stopped before continuing.

• Select the refrigerant address of the indoor unit for the self-diagnosis. Note: Set refrigerant address using the outdoor unit’s DIP switch (SW1). (For more information, see the outdoor unit installation manual.)

• If an air conditioner error occurs, the indoor unit's sensor emits an intermit tent buzzer sound, the operation lamp blinks, and the error code is output. (It takes 3 seconds at most for error code to appear.)

• The check mode is cancelled.

[Procedure]

1. Press the CHECK button twice.

2. Press the temperature buttons.

3. Point the remote controller at the sensor on the indoor unit and press the HOUR button.

4. Point the remote controller at the sensor on the indoor unit and press the ON/OFF button.

<Malfunction-diagnosis method at maintenance service>

11-3-4. Malfunction-diagnosis method by wireless remote controller

When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop.

ON/OFF

TEMP

FAN

VANE

MODE

CHECK

LOUVER

TEST RUN

AUTO STOP

AUTO START

min

RESET

SET

CLOCK

CHECK

CHECK display

Temperature button

CHECK button

Refrigerant address display

HOUR button

ON/OFF button

[Output pattern A] Errors detected by indoor unit

[Output pattern B]

*1If the beeper does not sound again after the initial

2 beeps to confirm the self-check start signal was received and

the OPERATION INDICATOR lamp does not come on,

there are no error records.

*2If the beeper sounds 3 times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 sec.)” after the initial 2 beeps to confirm

the self-check start signal was received, the specified refrigerant address is incorrect.

OPERATION INDICATOR lamp blink pattern

Beep Beep Beep Beep Beep Beep Beep

Off

Approx. 2.5 sec.OnApprox. 3 sec.On0.5 sec.On0.5 sec.On0.5 sec.On0.5 sec.

Off

Approx. 2.5 sec.OnApprox. 3 sec.On0.5 sec.On0.5 sec.

· · · Repeated

Number of blinks/beeps in pattern indicates the check code in the following table (i.e., n=5 for “U2”)

Number of blinks/beeps in pattern indicates the check code in the following table

1st2nd3

1st2

Self-check starts (Start signal received)

Beeper sounds

[Output pattern B]

OPERATION INDICATOR lamp blink pattern

Beep

Beep Beep Beep Beep Beep Beep

Off

Approx. 2.5 sec.On0.5 sec.On0.5 sec.On0.5 sec.

0.5 sec.

Off

Approx. 2.5 sec.On0.5 sec.On0.5 sec.

· · · Repeated

Number of blinks/beeps in pattern indicates the check code in the following table (i.e., n=5 for “P5”)

Number of blinks/beeps in pattern indicates the check code in the following table

1st2nd3

1st2

Self-check starts (Start signal received)

Beeper sounds

• Refer to the following tables for details on the check codes. [Output pattern A]

Beeper sounds/OPERATION

INDICATOR lamp blinks Check code

Symptom Remark

(Number of times)

Wireless remote controller

Wired remote controller

Beeper sounds/OPERATION

INDICATOR lamp blinks Check code

(Number of times)

Wireless remote controller

Wired remote controller

1P1

Intake sensor error

P9 Pipe (TH5) sensor error

P2 Pipe (TH2) sensor error

3E6,E7

Indoor/outdoor unit communication error

4 P4 Drain sensor error/Float switch connector open 5

Forced compressor stop (due to water leakage abnormality)

Freezing/Overheating protection operation 7 EE Communication error between indoor and outdoor units 8P8Pipe temperature error 9 E4, E5 Remote controller signal receiving error

–

Errors detected by unit other than indoor unit (outdoor unit, etc.)

Symptom Remark

Indoor/outdoor unit communication error

(Transmitting error) (Outdoor unit)

Open/short of outdoor unit thermistors

Compressor overcurrent interruption (When compressor locked)

Abnormal high discharging temperature/insufficient refrigerant

Abnormal high pressure (63H operated)/Overheating protection operation

Abnormal temperature of heatsink

Outdoor unit fan protection stop

Compressor overcurrent interruption/Abnormality of power module

Abnormality of superheat due to low discharge temperature

Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit/Current sensor error

12 13

UP U3,U4 UF

U1,Ud

U8 U6 U7

U9,UH

Others

– –

Other errors (Refer to the technical manual for the outdoor unit.)

For details, check the LED display of the outdoor controller board.

12 Fb

Indoor unit control system error (memory error, etc.) –

E0, E3

– E1, E2 Remote controller control board error

Remote controller transmission error

Compressor overcurrent interruption

As for indoor unit, refer to indoor unit's service manual.

Drain pump error

11-4. SELF-DIAGNOSIS ACTION TABLE

Error Code

Abnormal point and detection method

Case

Judgment and action

None

—

1 No voltage is supplied to terminal

block(TB1) of outdoor unit.

a) Power supply breaker is

turned off.

b) Contact failure or disconnec-

tion of power supply terminal c) Open phase (L2 or N phase)

2 Electric power is not supplied to

outdoor controller circuit board.

a) Disconnection of connector

(CNDC)

3 Disconnection of reactor

(ACL4)

4 Disconnection of outdoor noise

filter circuit board or parts failure in outdoor noise filter circuit board

5 Defective outdoor controller circuit board

1 Check following items.

a) Power supply breaker b), c) Connection of power supply terminal

block (TB1)

2 Check connection of the connector (CNDC)

on the outdoor controller circuit board.

Check connection of the connector CNDC on

the outdoor noise filter circuit board.

Refer to 11-9.

3 Check connection of reactor. (ACL4)

4 a) Check connection of outdoor noise filter

circuit board. b) Replace outdoor noise filter circuit board.

Refer to 11-9.

5 Replace controller board (When items above

are checked but the units cannot be repaired).

(5201)

63H connector open

Abnormal if 63H connector circuit is open for 3 minutes continuously after power supply. 63H: High-pressure switch

1 Disconnection or contact failure

of 63H connector on outdoor controller circuit board

2 Disconnection or contact failure

of 63H

3 63H is operating due to defec-

tive parts. 4 Defective outdoor controller circuit board

1 Check connection of 63H connector on outdoor controller circuit board. Refer to 11-9.

2 Check the 63H side of connecting wire. 3 Check continuity by tester.

Replace the parts if the parts are defective. 4 Replace outdoor controller circuit board.

Error Code

Abnormal point and detection method

Judgment and action

(6845)

Miswiring of indoor/outdoor unit connecting wire (converse wiring or disconnection)

Outdoor controller circuit board can automatically set the unit number of indoor units. Abnormal if the indoor unit number cannot be set within 4 minutes after power on because of miswiring (converse wiring or disconnection) of indoor/outdoor unit connecting wire.

(6846)

Start-up time over

The unit cannot finish start-up process within 4 minutes after power on.

Case

1 Contact failure of indoor/ outdoor unit connecting wire 2 Diameter or length of indoor/

outdoor unit connecting wire is out of specified capacity.

7 2 or more outdoor units have

refrigerant address “0” . (In case of group control) 8 Noise has entered into power

supply or indoor/outdoor unit

connecting wire.

1 Contact failure or miswiring of

indoor/outdoor unit connecting

wire 2 Diameter or length of indoor/

outdoor unit connecting wire is

out of specified capacity. 4 Defective transmitting receiving

circuit of outdoor controller circuit

board 5 Defective transmitting receiving

circuit of indoor controller board

6 Defective indoor power board 7 2 or more outdoor units have

refrigerant address “0”. (In case of group control) 8 Noise has entered into power

supply or indoor/outdoor unit

connecting wire.

Indoor/outdoor unit connector miswiring, excessive number of units

1. Outdoor controller circuit board can automatically check the number of connected indoor units. Abnormal if the

number cannot be checked automatically due to miswiring of indoor/outdoor unit connecting wire and etc. after power is turned on for 4 minutes.

2. Abnormal if outdoor controller circuit board recognizes excessive number of indoor units.

1 Check disconnection or looseness or polar-

ity of indoor/outdoor unit connecting wire of indoor and outdoor units.

2 Check diameter and length of indoor/outdoor

unit connecting wire. Total wiring length: 80m (Including wiring connecting each indoor unit

and between indoor and outdoor unit) Also check if the connection order of flat

cable is S1, S2, S3. 3 Check the number of indoor units that are

connected to one outdoor unit. (If EA is

detected.) 4~6 Turn the power off once, and on again to

check. Replace outdoor controller circuit board, indoor controller board or indoor power board if abnormality occurs again.

7 Check if refrigerant addresses (SW1-3 to

SW1-6 on outdoor controller circuit board)

are overlapping in case of group control system.

8 Check transmission path, and remove the

cause. w The descriptions above, 1-8, are for EA, Eb

and EC.

1 Contact failure or miswiring of

indoor/outdoor unit connecting wire

2 Diameter or length of indoor/

outdoor unit connecting wire is out of specified capacity.

3 Excessive number of indoor

units are connected to 1 outdoor unit. (5 units or more)

4 Defective transmitting receiving

circuit of outdoor controller circuit board 5 Defective transmitting receiving

circuit of indoor controller board

6 Defective indoor power board 7 2 or more outdoor units have

refrigerant address “0” . (In case of group control) 8 Noise has entered into power supply or indoor / outdoor unit connecting wire.

(6844)

Error Code

Abnormal point and detection method

Judgment and action

(1302)

High pressure (High-pressure switch 63H operated)

Abnormal if high-pressure switch 63H operated ( w ) during compressor operation.

w 4.15 MPa 63H : High-pressure switch

1 Short cycle of indoor unit 2 Clogged filter of indoor unit 3 Decreased airflow caused by

dirt of indoor fan

4 Dirt of indoor heat exchanger 5 Locked indoor fan motor 6 Malfunction of indoor fan motor 7 Defective operation of stop

valve (Not full open)

8 Clogged or broken pipe 9 Locked outdoor fan motor

0 Malfunction of outdoor fan

motor

1 Short cycle of outdoor unit 2 Dirt of outdoor heat exchanger 3 Decreased airflow caused by

defective inspection of outside temperature thermistor

(It detects lower temperature

than actual temperature.)

4 Disconnection or contact failure

of connector (63H) on outdoor controller board

5 Disconnection or contact failure

of 63H connection

6 Defective outdoor controller

board

7 Defective action of linear

expansion valve 8 Malfunction of fan driving circuit

1~6 Check indoor unit and repair defect.

7 Check if stop valve is fully open. 8 Check piping and repair defect.

9~2 Check outdoor unit and repair defect.

3 Check the inspected temperature of outside

temperature thermistor on LED display.

(SW2 on A-Control Service Tool : Refer to

11-10.)

4~6 Turn the power off and check F5 is displayed when the power is turned again. When F5 is displayed, refer to “Judgment

and action” for F5.

7 Check linear expansion valve. Refer to 11-6. 8 Replace outdoor controller board.

Case

(1102)

High discharging temperature

(1) Abnormal if discharge temperature

thermistor (TH4) exceeds 125: or 110: continuously for 5 minutes.

Abnormal if condenser/evaporator

temperature thermistor (TH5) exceeds 40: during defrosting and discharge temperature thermistor (TH4) exceeds 110:.

(2) Abnormal if discharge superheat

(Cooling: TH4 – TH5 / Heating: TH4 – TH6) exceeds 70: continuously for 10 minutes.

Overheated compressor opera-

tion caused by shortage of

refrigerant 2 Defective operation of stop

valve

3 Defective thermistor 4 Defective outdoor controller

board 5 Defective action of linear

expansion valve 6 Clogging with foreign objects in

refrigerant circuit w Clogging occurs in the parts

which become below freez-

ing point when water enters in

refrigerant circuit.

1 Check intake superheat. Check leakage of refrigerant. Charge additional refrigerant.

2 Check if stop valve is fully open. 34 Turn the power off and check if U3 is dis-

played when the power is turned on again.

When U3 is displayed, refer to “Judgement

and action” for U3. 5 Check linear expansion valve. Refer to 11-6. 6 After recovering refrigerant, remove water

from entire refrigerant circuit under vacuum more than 1 hour.

(5104)

Open/short circuit of discharge temperature thermistor (TH4)

Abnormal if open (3: or less) or short (217: or more) is detected during compressor operation. (Detection is inoperative for 10 minutes of compressor starting process and for 10 minutes after and during defrosting.)

1 Disconnection or contact failure of connector (TH4) on

the outdoor controller circuit board

2 Defective thermistor

3 Defective outdoor controller

circuit board

1 Check connection of connector (TH4) on the

outdoor controller circuit board. Check breaking of the lead wire for thermistor (TH4). Refer to 11-9. 2 Check resistance value of thermistor (TH4) or

temperature by microprocessor. (Thermistor/TH4: Refer to 11-6.) (SW2 on A-Control Service Tool: Refer to

11-10.) 3 Replace outdoor controller board.

+ 67 hidden pages

Mitsubishi PUHZ-P250YHA, PUHZ-P200YHA3R3, PUHZ-P250YHA3, PUHZ-P250YHA3R1, PUHZ-P250YHA3R2 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual