Mitsubishi PCA-RP71, PCA-RP125HA Service Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS SPLIT-TYPE, AIR CONDITIONERS

SERVICE MANUAL

May 2008

No. OC329

REVISED EDITION-B

Indoor unit [Model names] [Service Ref.]

PCA-RP71HA

PCA-RP71HA#1

PCA-RP125HA

PCA-RP125HA#1

CONTENTS

1. TECHNICAL CHANGES

2. REFERENCE MANUAL

3. SAFETY PRECAUTION

4. PART NAMES AND FUNCTIONS

5. SPECIFICATIONS

6. NOISE CRITERION CURVES

7. OUTLINES AND DIMENSIONS

WIRING DIAGRAM

INDOOR UNIT

Model name indication

REFRIGERANT SYSTEM DIAGRAM

10. TROUBLESHOOTING

11. SPECIAL FUNCTION

12. DISASSEMBLY PROCEDURE

13. PARTS LIST

14. RoHS PARTS LIST

Revision:

• PCA-RP71·125HA#1 are added in REVISED EDITION-B.

• Some descriptions have been modified.

• Please void OC329 REVISED EDITION-A.

Note:

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

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

• For servicing of RoHS compliant products, refer to the RoHS Parts List.

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13 14 15

33 36

2 2 3

TEMP.

REMOTE CONTROLLER

ON/OFF

TECHNICAL CHANGES

PCA-RP71HA PCA-RP71HA#1 PCA-RP125HA PCA-RP125HA#1

INDOOR CONTROLLER BOARD(I.B.) has been changed.

REFERENCE MANUAL

2-1. OUTDOOR UNIT’S SERVICE MANUAL

Service Ref. Service Manual No. PUHZ-RP35/50/60/71/100/125/140VHA

PUHZ-RP100/125/140YHA

(1)

PUHZ-RP71/100/125/140VHA PUHZ-RP200/250YHA PUHZ-RP200/250YHA PU(H)-P • VGAA.UK PU(H)-P • YGAA.UK PUHZ-P100/125/140VHA.UK OC359 PUHZ-RP35/50/60/71/100/125/140VHA2 PUHZ-RP100/125/140YHA2 PUHZ-RP35/50/60/71/100VHA3 PUHZ-RP100YHA3 PU(H)-P71/100VHA PU(H)-P100/125/140YHA PUHZ-P100/125/140VHA2 PUHZ-RP71/100/125/140VHA2-A PUHZ-RP100/125/140YHA2-A PUHZ-BP100/125/140VHA-A PUHZ-BP200/250YHA-A PUHZ-P200/250YHA2 OCH424 / OCB424 PUHZ-HRP71/100VHA PUHZ-HRP100/125YHA PUHZ-RP200/250YHA2 OCH428 / OCB428

(1)(2) (1)

-A OC339

(1)

.UK

-A OC337

(1)

.UK

(1)

.UK OCH415 / OCB415

(1)

OC334

OC338

OC336

OC374

OC379

OCH422 / OCB422

OCH423 / OCB423

OCH425 / OCB425

2-2. TECHNICAL DATA BOOK

Series (Outdoor unit) Manual No. PUHZ-RP • HA(-A) OCS01

PU(H)-P • GAA.UK OCS02 PUHZ-RP • HA2 OCS05 PUHZ-P • HA OCS06 PU(H)-P • HA OCS07 PUHZ-P • VHA2, PUHZ-P • YHA OCS08 PUHZ-RP • HA2-A OCS09 PUHZ-BP • HA OCS10 PUHZ-HRP • HA OCS11

SAFETY PRECAUTION

3-1. ALWAYS OBSERVE FOR SAFETY

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

3-2. CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilising refrigerant R407C

Do not use the existing refrigerant piping.

The old refrigerant and lubricant in the existing piping contains a large amount of chlorine which may cause the lubricant deterioration of the new unit.

Use “low residual oil piping”

If there is a large amount of residual oil (hydraulic oil, etc.) inside the piping and joints, deterioration of the lubricant will result.

Store the piping to be used during installation indoors with keep both ends sealed until just before brazing. (Store elbows and other joints in a plastic bag.)

If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and compressor trouble may result.

Use ESTER , ETHER or HAB as the lubricant to coat flares and flange connection parts.

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

Use liquid refrigerant to charge the system.

If gas refrigerant is used to seal the system, the composition of the refrigerant in the cylinder will change and performance may drop.

Do not use a refrigerant other than R407C.

If another refrigerant (R22, etc.) is used, the chlorine in the refrigerant may cause the lubricant deterioration.

Use a vacuum pump with a reverse flow check valve.

The vacuum pump oil may flow back into the refrigerant cycle and cause the lubricant deterioration.

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

[1] Cautions for service

·After recovering the all refrigerant in the unit, proceed to working.

·Do not release refrigerant in the air.

·After completing the repair service, recharge the cycle with the specified amount of liquid refrigerant.

[2] Refrigerant recharging

(1) Refrigerant recharging process

1Direct charging from the cylinder.

·R407C cylinder are available on the market has a syphon pipe.

·Leave the syphon pipe cylinder standing and recharge it. (By liquid refrigerant)

Unit

Gravimeter

(2) Recharge in refrigerant leakage case

·After recovering the all refrigerant in the unit, proceed to working.

·Do not release the refrigerant in the air.

·After completing the repair service, recharge the cycle with the specified amount of liquid refrigerant.

[3] Service tools

Use the below service tools as exclusive tools for R407C refrigerant.

No. Tool name Specifications 1 Gauge manifold ·Only for R407C.

·Use the existing fitting SPECIFICATIONS. (UNF7/16)

·Use high-tension side pressure of 3.43MPa·G or over. 2 Charge hose ·Only for R407C.

·Use pressure performance of 5.10MPa·G or over. 3 Electronic scale 4 Gas leak detector ·Use the detector for R134a or R407C. 5 Adapter for reverse flow check. ·Attach on vacuum pump. 6 Refrigerant charge base. 7 Refrigerant cylinder. ·For R407C ·Top of cylinder (Brown)

·Cylinder with syphon 8 Refrigerant recovery equipment.

—

CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilising refrigerant R410A

Use new refrigerant pipes.

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

· For RP71VHA3 and RP125 be sure to perform replacement operation before test run.

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

· Avoid using thin pipes.

Make sure that the inside and outside of refrigerant piping is clean and it has no contamination such as sulfur hazardous for use, oxides, dirt, shaving particles, etc. In addition, use pipes with specified thickness.

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

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

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

Do not use refrigerant other than R410A.

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

Use a vacuum pump with a reverse flow check valve.

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

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

The following tools are necessary to use R410A refrigerant.

Tools for R410A Gauge manifold Charge hose

Gas leak detector

Torque wrench

Flare tool Size adjustment gauge Vacuum pump adaptor

Electronic refrigerant charging scale

Keep the tools with care.

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

Use ester oil, ether oil or alkylbenzene oil (small amount) as the refrigerant oil applied to flares and flange connections.

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

Do not use a charging cylinder.

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

Ventilate the room if refrigerant leaks during

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.

operation. If refrigerant comes into contact with a flame, poisonous gases will be released.

[1] Cautions for service

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

[2] Additional refrigerant charge

When charging directly from cylinder

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

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

Unit

Gravimeter

[3] Service tools

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

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

·Use the existing fitting

·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

specifications

. (UNF1/2)

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

Set T emperature buttons

Down Up

Timer Menu button (Monitor/Set button)

Mode button (Return button)

Set Time buttons

Back Ahead

Timer On/Off button (Set Day button)

Opening the door.

ON/OFF button

Fan Speed button

Filter button (<Enter> button)

Test Run button

Check button (Clear button)

Airflow Up/Down button

Louver button ( Operation button)

To preceding operation number.

Ventilation button (

Operation button)

T o next operation number.

PART NAMES AND FUNCTIONS

 Indoor (Main) Unit

Left/right guide vanes

Air outlet

Change the direction of airflow from the horizontal blower.

Oil filter (Air intake)

Up/down guide vanes

Change the direction of airflow from the vartical blower.

Air intake

+ It prevents oil from getting into the unit.

 Remote controller

Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button.

 Operation buttons

 Display

For purposes of this explanation, all parts of the display are shown as lit. During actual operation, only the relevant items will be lit.

Identifies the current operation

Shows the operating mode, etc. * Multilanguage display is sup-

ported.

“Centrally Controlled” indicator

Indicates that operation of the remote controller has been prohibited by a master controller.

“Timer Is Off” indicator

Indicates that the timer is off.

Temperature Setting

Shows the target temperature.

Day-of-Week

Shows the current day of the week.

Time/Timer Display

Shows the current time, unless the simple or Auto Off timer is set. If the simple or Auto Off timer is set, shows the time remaining.

TIME SUN MON TUE WED THU FRI SAT TIMER AFTER

ERROR CODE

°F°C

Hr AFTER

°F°C

ONLY1Hr.

Up/Down Air Direction indicator

The indicator shows the direction of the outcoming airflow.

“One Hour Only” indicator

Displayed if the airflow is set to low and downward during COOL or DRY mode. (Operation varies according to model.) The indicator goes off after one hour, at which time the airflow direction also changes.

Room Temperature display

Shows the room temperature.

Louver display

Indicates the action of the swing louver. Does not appear if the louver is stationary.

(Power On indicator)

Indicates that the power is on.

ON OFF

FUNCTION

FILTER

WEEKLY

SIMPLE

AUTO OFF

“Sensor” indication

Displayed when the remote controller sensor is used.

“Locked” indicator

Indicates that remote controller buttons have been locked.

“Clean The Filter” indicator

Comes on when it is time to clean the filter.

Timer indicators

The indicator comes on if the corresponding timer is set.

Fan Speed indicator

Shows the selected fan speed.

Ventilation indicator

Appears when the unit is running in Ventilation mode.

Caution

 Only the Power on indicator lights when the unit is stopped and power supplied to the unit.  If you press a button for a feature that is not installed at the indoor unit, the remote controller will display the “Not Available”

message. If you are using the remote controller to drive multiple indoor units, this message will appear only if he feature is not present at every unit connected.  When power is turned ON for the first time, it is normal that “PLEASE WAIT” is displayed on the room temperature indication

(For max. 2minutes). Please wait until this “PLEASE WAIT” indication disappear then start the operation.

SPECIFICATIONS

Service Ref.

Mode Power supply(phase, cycle, voltage) Input Running current Starting current External finish Heat exchanger Fan Fan(drive) x No. Fan motor output Airflow(Low-High) External static pressure

INDOOR UNIT

Operation control & Thermostat Noise level(Low-High) Unit drain pipe I.D. Dimensions

Weight

Service Ref.

Mode Power supply(phase, cycle, voltage) Input Running current Starting current External finish Heat exchanger Fan Fan(drive) x No. Fan motor output Airflow(Low-High) External static pressure

INDOOR UNIT

Operation control & Thermostat Noise level(Low-High) Unit drain pipe I.D. Dimensions

Weight

D H

A A

*/min(CFM)

Pa(mmAq)

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

kg(lbs)

A A

*/min(CFM)

Pa(mmAq)

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

kg(lbs)

PCA-RP71HA, PCA-RP71HA#1

Cooling

Single phase, 50Hz, 230V

0.09

0.43

0.86 Stainless steel

Plate fin coil

Sirocco fan (direct) x 2

0.04

17-19(600-670)

0(direct blow)

Remote controller & built-in

34-38

26(1)

1,136(44-3/4)

650(25-5/8)

280(11)

41(90)

PCA-RP125HA, PCA-RP125HA#1

Cooling

Single phase, 50Hz, 230V

0.26

1.19

2.38 Stainless steel

Plate fin coil

Sirocco fan (direct) x 4

0.08 + 0.08

30-38(1,060-1,350)

0(direct blow)

Remote controller & built-in

44-50

26(1)

1,520(59-7/8)

650(25-5/8)

280(11) 56(124)

Heating

0.09

0.43

0.86

Heating

0.26

1.19

2.38

NOISE CRITERION CURVES

PCA-RP71HA PCA-RP71HA#1

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

APPROXIMATE

THRESHOLD OF HEARING FOR CONTINUOUS NOISE

63 125 250 500 1000 2000 4000 8000

NOTCH

High

Low

BAND CENTER FREQUENCIES, Hz

SPL(dB)

38 34

LINE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

PCA-RP125HA PCA-RP125HA#1

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

APPROXIMATE

THRESHOLD OF HEARING FOR CONTINUOUS NOISE

63 125 250 500 1000 2000 4000 8000

NOTCH

High Low

BAND CENTER FREQUENCIES, Hz

SPL(dB)

50 44

LINE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

about 1.4m

MICROPHONE

ceiling

unit

Ceiling

Less than

or more

Less than

or more

300

model:PAC-SG38KF-E (12pcs.)

Filter element for the exchange

1.Use M10 or W3/8 screw for anchor bolt.

NOTES.

(122 )

handle

100

1001136

366

480

176

318

650

Terminal block box

Inspection port

(pipe sensor)

The half bottom of FAN CASING

can be separated.

Adjustable part

288

360

Filter (3-pieces)

Terminal block bo

105

90°

Electrical box

Rear wall

500

250

2 ~ 3

(Gap to ceiling)

Allowing clearances

Suspension bolt

130

210

165

120

1224

1180

1136

986

1098

243

254

175

197

110

130 15

258 110 102

320 80

14018

70~90

650

289

280

495

295

:222

:200

Refrigerant-pipe connection(gas pipe side/flared connection : 5/8F)

Refrigerant-pipe connection(liquid pipe side/flared connection : 3/8F)

Flexible hose(accessory) Drainage pipe connection(26mm I.D.)

Knockout hole for behind refrigerant-piping arrangement

Knockout hole for upper refrigerant-pipe arrangement

Knockout hole for wiring arrangement : 2- : 27

Terminal block(indoor/outdoor connecting line)

Terminal block(remote controller)

Knockout hole (duct for fresh air intake): 2- : 200

Option parts:duct flange( : 200). model: PAC-SF28OF-E(1 pc.)

OUTLINES AND DIMENSIONS

PCA-RP71HA PCA-RP71HA#1

Unit : mm

Ceiling

Less than

or more

Allowing clearances

Rear wall

(Gap to ceiling)

NOTES.

1.Use M10 or W3/8 screw for anchor bolt.

Use the current nuts meeting the pipe size

of the outdoor unit.

model:PAC-SG38KF-E (12pcs.)

Filter element for the exchange

(122)246

handle

Terminal block box

Inspection port

(pipe sensor)

The half bottom of FAN CASING

can be separated.

Adjustable part

288

360

Filter (4-pieces)

Terminal block box

176

38 210

105

8545

165

:222

:200

440440298

130

90°

650

300

1001520100

Electrical box

500

250

2~3

Suspension bolt

243

254

175

197

110

130 15

258

1482

110 102

1370 75

1608

320 801564

1520

90 120

14018

70~90

650

289

280

495

295

Refrigerant-pipe connection(gas pipe side/flared connection : 5/8F, 3/4F)

Refrigerant-pipe connection(liquid pipe side/flared connection : 3/8F)

Flexible hose(accessory) Drainage pipe connection(26mm I.D.)

Knockout hole for behind refrigerant-piping arrangement

Knockout hole for upper refrigerant-pipe arrangement

Knockout hole for wiring arrangement : 2- : 27

Terminal block(indoor/outdoor connecting line)

Terminal block(remote controller)

Knockout hole (duct for fresh air intake) : 2- : 200

Option parts:duct flange( : 200). model: PAC-SF28OF-E(1 pc.)

: 9.52

RP125

: 15.88

: 19.05

Available pipe size

 LIQUID SIDE

 GAS SIDE

: Initial flare nut size

PCA-RP125HA PCA-RP125HA#1

Unit : mm

+ 28 hidden pages