Mitsubishi OC330B Service Manual

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

SERVICE MANUAL

May 2008

No.OC330

REVISED EDITION-B

Indoor unit [Model names]

PKA-RP35GAL

PKA-RP50GAL

PKH-P35GALH PKH-P50GALH

[Service Ref.]

PKA-RP35GAL PKA-RP35GAL#1 PKA-RP50GAL PKA-RP50GAL#1

PKH-P35GALH PKH-P50GALH

Indoor unit

Model name indication

Revision :

• PKA-RP35·50GAL#1 are added in REVISEDEDITION-B

• Some discriptions have been

modified.

• Please void OC330 REVISED EDITION-A.

Note :

• This manual describes only

service data of the indoor units.

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

For servicing of RoHS compliant products, refer to

the RoHS Parts List.

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

8. WIRING DIAGRAM

REFRIGERANT SYSTEM DIAGRAM

10. TROUBLE SHOOTING

11. SPECIAL FUNCTION

12. DISASSEMBLY PROCEDURE

13. PARTS LIST

14. RoHS PARTS LIST

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2 2 3

13 14 15

33 37 40

Remote controller

TECHNICAL CHANGES

PKA-RP35GAL PKA-RP35GAL#1 PKA-RP50GAL PKA-RP50GAL#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 PUHZ-RP71/100/125/140VHA

(1)

(1)(2)

(1)

.UK

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)

-A OC337

-A OC339

(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 utilizing 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 seal 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 R410A refrigerant.

No. Tool name Specifications

·Only for R407C.

Gauge manifold

Charge hose

Electronic scale

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

Adapter for reverse flow check. ·Attach on vacuum pump.

Refrigerant charge base.

Refrigerant cylinder.

Refrigerant recovery equipment.

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

·Use high-tension side pressure of 3.43MPa·G or over.

·Only for R407C.

·Use pressure performance of 5.10MPa·G or over.

·For R407C ·Top of cylinder (Brown)

·Cylinder with syphon

CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilizing refrigerant R410A

Use new refrigerant pipes.

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

· 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.

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 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.

Do not use a charging cylinder.

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

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.

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

[1] Cautions for service

(1) Perform service after 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

·Only for R410A

Gauge manifold

Charge hose

Electronic scale

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

Adaptor for reverse flow check ·Attach on vacuum pump.

Refrigerant charge base

Refrigerant cylinder

Refrigerant recovery equipment

·Use the existing fitting

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

·Only for R410A

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

·Only for R410A ·Top of cylinder (Pink)

·Cylinder with syphon

specifications

. (UNF1/2)

4 PART NAMES AND FUNCTIONS

Indoor Unit

Air intake

Guide vane

Filter

Air outlet

Air intake grille

Auto vane

Wireless remote controller

When cover is open.

CHECK

TEST RUN

display

CHECK&TEST RUN display indicates that the unit is being checked or test-run.

MODEL SELECT

Blinks when model is selected.

display

Lights up while transmission to the indoor unit is mode using switches.

display

SET TEMP. display indicates desired temperature set.

display

OPERATION MODE display Operation mode display indicates which operation mode is in effect.

display

The vertical direction of air flow is indicated.

display

FAN SPEED display indicates which fan speed has been selected.

ON/OFF button

The unit is turned ON and OFF alternately each time the button is pressed.

FAN SPEED SELECT button

Used to change the fan speed.

MODE SELECT button

Used to switch the operation mode between

cooling, drying, heating and auto mode.

+ In case the outdoor unit is cool only type,

the heating and auto mode not available.

CHECK-TEST RUN button

Only press this button to perform an inspection check or test operation. Do not use it for normal operation.

CHECK

TEST RUN

MODEL SELECT

NOT AVAILABLE

ON/OFF TEMP

FAN

MODE

CHECK

VAN E

LOUVER

TEST RUN

RESETSET CLOCK

°C

AMPM

AUTO STOP

AUTO START

min

CLOCK display

Displays the current time.

TIMER display

Displays when in timer operation or when setting timer.

“ ” “ ” display

Displays the order of timer operation.

“ ” “ ” display

Displays whether timer is on or off.

button

SET TEMPERATURE button sets any desired room temperature.

TIMER CONTROL buttons

AUTO STOP (OFF timer): when this switch is set, the air conditioner will be automatically stopped at the preset time. AUTO START (ON timer): when this switch is set, the air conditioner will be automatically started at the preset time.

h and min buttons

Buttons used to set the “hour and minute” of the current time and timer settings.

LOUVER button

Changes left/right airflow direction.

(Not available for this model.)

VANE CONTROL button

Used to change the air flow direction.

CLOCK button

RESET button

SET buttonCLOCK button

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

External static pressure

INDOOR UNIT

Operation control & Thermostat Noise level(Low-Medium2-Medium1-High) Unit drain pipe O.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

External static pressure

INDOOR UNIT

Operation control & Thermostat Noise level(Low-Medium2-Medium1-High) Unit drain pipe O.D. Dimensions

Weight

Airflow(Low-Medium2-Medium1-High)

D H

Airflow(Low-Medium2-Medium1-High)

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)

PKA-RP35GAL, PKA-RP35GAL#1

Cooling

Single phase, 50Hz, 230V

0.07

0.33

0.40 Munsell 0.70Y 8.59/0.97

Plate fin coil

Line flow (direct) x 1

0.030

9-10-11-12(320-355-390-425)

0(direct blow)

Wireless remote controller & built-in

36-38-41-43

20(13/16)

990(39)

235(9-1/4)

340(13-3/8)

16(35)

PKA-RP50GAL, PKA-RP50GAL#1

Cooling

Single phase, 50Hz, 230V

0.07

0.33

0.40 Munsell 0.70Y 8.59/0.97

Plate fin coil

Line flow (direct) x 1

0.030

9-10-11-12(320-355-390-425)

0(direct blow)

Wireless remote controller & built-in

36-38-41-43

20(13/16)

990(39)

235(9-1/4)

340(13-3/8)

16(35)

Heating

0.07

0.33

0.40

Heating

0.07

0.33

0.40

Service Ref.

Mode Power supply(phase, cycle,voltage) Input +1 Running current +1 Starting current +1 External finish Heat exchanger Fan Fan(drive) x No. Fan motor output

External static pressure

INDOOR UNIT

Booster heater +1 Operation control & Thermostat Noise level(Low-Medium2-Medium1-High) Unit drain pipe O.D. Dimensions

Weight

+1 : < > Shows the onl

Airflow(Low-Medium2-Medium1-High)

D H

booster heater rating.

A A

*/min(CFM)

Pa(mmAq)

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

kg(lbs)

Cooling

PKH-P35GALH

Single phase, 50Hz, 230V

0.07

0.33

0.40 Munsell 0.70Y8.59/0.97

Plate fin coil

Line flow (direct) x 1

0.030

9-10-11-12(318-353-388-424)

0(direct blow)

<0.73>

Wireless remote controller & built-in

36-38-41-43

20(13/16)

990(39)

235(9-1/4)

340(13-3/8)

17(37)

Heating

0.07<0.73>

0.33<3.17>

0.40<3.17>

Service Ref.

Mode Power supply(phase, cycle,voltage) Input +1 Running current +1 Starting current +1 External finish Heat exchanger Fan Fan(drive) x No. Fan motor output

External static pressure

INDOOR UNIT

Booster heater +1 Operation control & Thermostat Noise level(Low-Medium2-Medium1-High) Unit drain pipe O.D. Dimensions

Weight

+1 : < > Shows the onl

Airflow(Low-Medium2-Medium1-High)

D H

booster heater rating.

A A

*/min(CFM)

Pa(mmAq)

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

kg(lbs)

Cooling

PKH-P50GALH

Single phase, 50Hz, 230V

0.07

0.33

0.40 Munsell 0.70Y 8.59/0.97

Plate fin coil

Line flow (direct) x 1

0.030

9-10-11-12(318-353-388-424)

0(direct blow)

<0.73>

Wireless remote controller & built-in

36-38-41-43

20(13/16)

990(39)

235(9-1/4)

340(13-3/8)

17(37)

Heating

0.07<0.73>

0.33<3.17>

0.40<3.17>

6 NOISE CRITERION CURVES

PKA-RP35/50GAL PKA-RP35/50GAL#1 PKH-P35/50GALH

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

BAND CENTER FREQUENCIES, Hz

NOTCH

High Medium1 Medium2

Low

SPL(dB)

43 41 38 36

LINE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

UNIT

MICROPHONE

WALL

1111

OUTLINES AND DIMENSIONS

INDOOR UNIT PKH-P35GALH PKA-RP35GAL PKA-RP35GAL#1 PKH-P50GALH PKA-RP50GAL PKA-RP50GAL#1

Knockout hole for right piping

Refrigerant pipe.Drain pipe.

Wiring hole

198

Air intake

r.SLI

MITSUBISHI ELECTRIC

COOL HEAT

ON STAND

OFF BY

235

Auto vane

990

Knockout hole for under piping

Refrigerant piping.Drain pipe.

Wiring hole

235

160 40

Air outlet

705

70 35

12-Louvers(manual)

Service panel

(Power supply access)

190

395400

Less than 15

Right side

Air intake

715 225

Air intake

340 80 280 233

245

Terminal block for

Terminal block to

outdoor unit

Filter grip

Unit : mm

Gas pipe

power supply (Heater (PKH-P35, 50GALH only))

31 280

installation)

(Right side piping

153

581 54

449

(Flexible hose total length800)

700

Refigerant Pipe flared connection

For R410A : 1/2F(:12.7)

For R407C : 5/8F(:15.88)

Liquid pipe

Refigerant Pipe flared connection

For R410A : 1/4F(:6.35)

For R407C : 3/8F(:9.52)

Model

RP35, 50

P35, 50 3/8F(:9.52) 5/8F(:15.88)

Front view

Left side

Less than 130

180 or more 30 or more

(Necessary clearance for

Unit installation)

Unit center

Installation plate

balance point hole

50 or more 150 or more

Front view(to open the grille)

190

R52.5

230

R52.5

272

R52.5

310

322

495

345 320

260

205

150

35 0

20 32 75

135

190

245

300

360

405

495

0355580130

R52.5

(Left side piping

Lower side

Right side

I L r.S

MITSUBISHI ELECTRIC

HEATCOOL

BYOFF

ON STAND

Refrigerant pipe.Drain pipe.Wiring hole.

Allowing clearances

Front view

340

245

Knockout hole for left piping

Gas pipe

Liquid pipe

installation)

425

Unit drain pipe O.D.20

190 170

Right-rear

piping hole

Through hole

210 230

Sleeve +1

Knockout hole for

right-rear piping

420

Model

+1 Sleeves are available on the market.

+2 This size shows the lower end of through hole.

:90~:100:90

35, 50

Details of installation plate

Left-rear

for bolts

14-:14hole

49-:5hole

for tapping screw

piping hole

left-rear piping

Knockout hole for

WIRING DIAGRAM

PKH-P35GALH PKA-RP35GAL PKA-RP35GAL#1 PKH-P50GALH PKA-RP50GAL PKA-RP50GAL#1

I.B

YLW

2 3

WHT

RED

I.B

1 3 5

FAN

(

)

WHT

BCR

SW2 SW1

SWE

ON OFF

Refer to tables 1 and 2 for service PCB.

HEATER

CN24

(YLW)

YLW

88H

6 5

P. B

CNDK (RED)

1 2

DC13.1V

CN2S

(WHT)

1 2

BLK

POWER

CNDK (RED)

WHT

RED

POWER

CND

(ORN)

LED3 LED2 LED1

YLW

ZNR

INTAKE CN20

(

RED

1 2

ORN

BLK

POWER CN2D(WHT)

FUSE

CN41 CN2L

CN51 CN32

LIQUID CN21

(

)

WHT

1 2

WHT

)

TH2

PKH-P35,50GALH models only

88H

GRN/YLW

REDRED 5 3RED BLU

1 2

RED REDGRY

26H

FS2

FS1

WHT

TB4

YLW ORN ORN BRN

VANE

1 31 31 3 1 2

)

TH5TH1

L N

CN6V

(

)

GRN

WIRELESS CN90

(

)

WHT

REMOCON CN22

(

)

BLU

1 2

POWER SUPPLY ~(1PHASE) 230V 50Hz

INDOOR/OUTDOOR COMMUNICATION CN3C(BLU)

PIPE CN29

(

BLK

1 2

TB2

+1 (Fig.1)

OUTDOOR

UNIT

YLW

I.B

POWER

CND

(ORN)

TRANSMISSION WIRES DC12V

TB5

Please set the voltage using the remote controller. For the setting method,please refer to the indoor unit Installation Manual.

RED

BLU

GRN/YLW

YLW

ORN ORN

ORN

BRN

3131

INDOOR/OUTDOOR

COMMUNICATION

CN3C

(BLU)

RECEIVER

LED1 LED2 SW2 SW1

TB2

TB4

R.B

L N

POWER SUPPLY ~(1PHASE) 230V 50Hz

TO OUTDOOR UNIT

CNB

W.B

1 2

TB6

SW1

Service board

1 2 3 4 5

SYMBOL NAME P. B I.B

FUSE FUSE (T6.3AL250V) ZNR VARISTOR CN2L CONNECTOR <LOSSNAY> CN32 CONNECTOR <REMOTE SWITCH> CN41 CONNECTOR <HA TERMINAL-A> CN51 CONNECTOR <CENTRALLY CONTROL> SW1 SWITCH <MODEL SELECTION>+See Table 1. SW2 SWITCH <CAPACITY CODE>+See Table 2. SWE SWITCH <EMERGENCY OPERATION> X4 RELAY <FAN MOTOR> BCR LED1 POWER SUPPLY <I.B> LED2

ON OFF

INDOOR POWER BOARD INDOOR CONTROLLER BOARD

FAN CONTROL ELEMENT

POWER SUPPLY <R.B> TRANSMISSION <INDOOR-OUTDOOR>LED3

MODELS

PKA-RP35GAL PKH-P35GALH

Service board Service board

1 2 3 4 5

SYMBOL NAME C CAPACITOR <FAN MOTOR> MF MV TB2

TB4

TB5,TB6

TH1

TH2

TH5

SW2

MODELS

PKA-RP50GAL

PKH-P50GALH

OFF

FAN MOTOR VANE MOTOR TERMINAL BLOCK (HEATER) +PKH-P.GALH

models only or option for PKA-RP.GAL models. TERMINAL BLOCK <INDOOR/ OUTDOOR

CONNECTING LINE> TERMINAL BLOCK <REMOTE CONTROLLER TRANSMISSION LINE> <OPTION> ROOM TEMP.THERMISTOR <0/ 15k, 25/ 5.4k DETECT> PIPE TEMP.THERMISTOR/ LIQUID <0/ 15k, 25/ 5.4k DETECT> COND./ EVA.TEMP.THERMISTOR <0/ 15k, 25/ 5.4k DETECT>

1 2 3 4 5

W.B

R.B HEATER

ON OFF

WIRELESS REMOTE CONTROLLER BOARD RECEIVING UNIT

RU BZ

BUZZER

LED1

LED <RUN INDICATOR>

LED2

LED <HOT ADJUST>

SW1

SWITCH (HEATING ON/ OFF>

SW2

SWITCH (COOLING ON/ OFF> WIRED REMOTE CONTROLLER BOARD

THERMAL FUSE <10410A>

FS1

THERMAL FUSE <8410A>

FS2

HEATER

HEATER THERMAL SWITCH

26H

HEATER CONTACTOR

88H

NOTES:

1. Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing.

2. Indoor and outdoor connecting wires are made with polarities, make wiring matching terminal numbers (S1, S2, S3).

3. Make sure that the main power supply of the booster heater is independent.

4. Symbols used in wiring diagram above are, : Connector, : Terminal (block).

+1. When work to supply power separately to Indoor and Outdoor unit was applied, refer to Fig 1. +2. For power supply system of this unit, refer to the caution label located near this diagram.

NAMESYMBOL

REFRIGERANT SYSTEM DIAGRAM

PKH-P35GALH PKA-RP35GAL PKA-RP35GAL#1 PKH-P50GALH PKA-RP50GAL PKA-RP50GAL#1

Strainer #50

Heat exchanger

Refrigerant GAS pipe connection (Flare)

Condenser/evaporator temperature thermistor (TH5)

Refrigerant LIQUID pipe connection (Flare)

Pipe temperature

Room temperature thermistor (TH1)

Distributor with strainer #50

thermistor/liquid (TH2)

Strainer #50

Refrigerant flow in cooling Refrigerant flow in heating

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