Mitsubishi OC333 Service Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

ON/OFF

TEMP.

SERVICE MANUAL

July 2005

No. OC333

Indoor unit [Model names] [Service Ref.]

PMH-P25BA PMH-P25BA PMH-P35BA PMH-P35BA PMH-P50BA PMH-P50BA

NOTE:

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

CONTENTS

INDOOR UNIT

REMOTE CONTROLLER

1. REFERENCE MANUAL······································2

2. SAFETY PRECAUTION···································2

3. PART NAMES AND FUNCTIONS ···················4

4. SPECIFICATIONS············································6

5. NOISE CRITERION CURVES··························7

6. OUTLINES AND DIMENSIONS·······················8

WIRING DIAGRAM

REFRIGERANT SYSTEM DIAGRAM

9. TROUBLESHOOTING ···································11

10. DISASSEMBLY PROCEDURE ······················22

11. PARTS LIST ···················································25

··············································9

··················10

Series (Outdoor unit)

PU(H)-P·VGAA.UK PU(H)-P·YGAA.UK

Manual No.

OCS02

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.

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.

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.

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

REFERENCE MANUAL

1-1. OUTDOOR UNIT’S SERVICE MANUAL

Service Ref.

PU(H)-P·VGAA.UK PU(H)-P·YGAA.UK

1-2. TECHNICAL DATA BOOK

SAFETY PRECAUTION

CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilising refrigerant R407C

Service Manual No.

OC336

[1] Cautions for service

Gravimeter

Unit

·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)

(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.

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

Set Temperature buttons

Down

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)

To next operation number.

PART NAMES AND FUNCTIONS

● Indoor Unit

Horizontal Air Outlet

Auto Air Swing Vane

Disperses airflow up and down and adjusts the angle of airflow direction.

Guide vane

Air flow can be changed to horizontally by moving the Guide vane to the left or right.

Filters

Remove dust and pollutants

Inhales air from room.

Air intake

from inhaled air.

● 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.

˚F˚C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

ON OFF

Hr AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

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.

“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.

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 weak 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.

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 the parent unit.

● 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.

A A

K/min(CFM)

Pa(mmAq)

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

kg(lbs)

Service Ref.

Mode Power supply(phase, cycle, voltage)

Input Running current

Starting current External finish Heat exchanger Fan Fan(drive) o No.

Fan motor output

Airflow(Low-Medium2-Medium1-High)

External static pressure Operation control & Thermostat Noise level(Low-Medium2-Medium1-High) Unit drain pipe I.D. Dimensions

Weight

D H

INDOOR UNIT

PMH-P35BA

Cooling

0.06

0.29

0.32

Heating

0.06

0.29

0.32

Single phase, 50Hz, 230V

Unit : Galvanized sheets with gray heat insulation, Grille munsell 0.98Y 8.99/0.63

Plate fin coil

Lineflow fan (direct) o 1

0.028

7.0-8.0-9.0-10.0(247-282-318-353) 0(direct blow)

Remote controller & built-in

34-36-38-40

26(1) UNIT : 854(33-5/8) PANEL : 1000(39-3/8) UNIT : 395(15-9/16) PANEL : 470(18-1/2) UNIT : 230(9-1/16) PANEL : 30(1-3/16) UNIT : 14(31) PANEL : 3(6.6)

Cooling

0.04

0.19

0.21

Heating

0.04

0.19

0.21

Single phase, 50Hz, 230V

Unit : Galvanized sheets with gray heat insulation, Grille munsell 0.98Y 8.99/0.63

Plate fin coil

Lineflow fan (direct) o 1

0.028

6.3-6.8-7.6-8.4(222-240-268-297) 0(direct blow)

Remote controller & built-in

29-31-33-35

26(1)

PMH-P25BA

A A

K/min(CFM)

Pa(mmAq)

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

kg(lbs)

Service Ref.

Mode Power supply(phase, cycle, voltage)

Input Running current

Starting current External finish Heat exchanger Fan Fan(drive) o No.

Fan motor output

Airflow(Low-Medium2-Medium1-High)

External static pressure Operation control & Thermostat Noise level(Low-Medium2-Medium1-High) Unit drain pipe I.D. Dimensions

Weight

W D H

INDOOR UNIT

UNIT : 854(33-5/8) PANEL : 1000(39-3/8) UNIT : 395(15-9/16) PANEL : 470(18-1/2) UNIT : 230(9-1/16) PANEL : 30(1-3/16) UNIT : 14(31) PANEL : 3(6.6)

Cooling

0.06

0.29

0.32

Heating

0.06

0.29

0.32

Single phase, 50Hz, 230V

Unit : Galvanized sheets with gray heat insulation, Grille munsell 0.98Y 8.99/0.63

Plate fin coil

Lineflow fan (direct) o 1

0.028

8.0-9.0-10.0-11.0(282-318-353-388) 0(direct blow)

Remote controller & built-in

36-38-40-42

26(1)

PMH-P50BA

A A

K/min(CFM)

Pa(mmAq)

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

kg(lbs)

Service Ref.

Mode Power supply(phase, cycle, voltage)

Input Running current

Starting current External finish Heat exchanger Fan Fan(drive) o No.

Fan motor output

Airflow(Low-Medium2-Medium1-High)

External static pressure Operation control & Thermostat Noise level(Low-Medium2-Medium1-High) Unit drain pipe I.D. Dimensions

Weight

D H

INDOOR UNIT

UNIT : 854(33-5/8) PANEL : 1000(39-3/8) UNIT : 395(15-9/16) PANEL : 470(18-1/2) UNIT : 230(9-1/16) PANEL : 30(1-3/16) UNIT : 14(31) PANEL : 3(6.6)

SPECIFICATIONS

NOISE CRITERION CURVES5

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 µ BAR

BAND CENTER FREQUENCIES, Hz

PMH-P35BA

High

NOTCH

Medium1 Medium2

Low

SPL(dB)

38 36 34

LINE

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 µ BAR

BAND CENTER FREQUENCIES, Hz

PMH-P25BA

High

NOTCH

Medium1 Medium2

Low

SPL(dB)

33 31 29

LINE

Ambient temperature 27: Test conditions are based on JIS Z8731

UNIT

1.5m

MICROPHONE

CEILING

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 µ BAR

BAND CENTER FREQUENCIES, Hz

PMH-P50BA

High

NOTCH

Medium1 Medium2

Low

SPL(dB)

40 38 36

LINE

OUTLINES AND DIMENSIONS

PMH-P25BA PMH-P35BA PMH-P50BA

PMH-P50BA

PMH-P35BA

PMH-P25BA

O.D.{35

O.D.{12.7(1/2") O.D.{15.88(5/8")

O.D.{6.35(1/4") O.D.{9.52(3/8")

Gas pipe

Liquid pipe

pipe cover

Refrigerant

piping

4-{2.8 Burring hole

100

{

90-

PVC pipe:VP-20[O.D.{25(1")]

Details of fresh air intake hole

Drainage piping

122

{

250 288.5

Knock out

Unit : mm

108

110

mounting plate

Flesh air intake hole

235 or more

230

110

Panel(grille):PMP-40BM

74.5

75926

960 ceiling opening20 20

1000 outer side of grille

811 suspension bolt pitch74.5

2828 45 20

Top

247

17.517.5

outer line of grille

center of unit

Air outlet(lower)

45 20

340 suspension bolt pitch 430 ceiling opening

470 outer side of grille

302

395

Terminal block for

indoor/outdoor connection

elect box

812

759

{50

230

198

Drainage pipe

PVC pipe:VP-20[O.D.{25]

141

254

Right side

Terminal block for remote controller

suspension bolt(M10 or W3/8)

Installation space required around indoor unit

200600200

drain pan

(56)

Front

(20)

(10)

1000 outer side of grille

(96)

470 outer side of grille

60 40

Panel(grille):PMP-40BM

Lower view

ceiling

panel

Refrigerant pipe(gas)

same line

drain pan

176

Refrigerant

pipe(liquid)

Left side

ceiling panel

6 5 4 3 251

FAN

(WHT)

LED1 CN90 CN32

I.B

LED2

LED3

CN41

2 1

REMOTE

CONTROLLER

CN22 (BLU)

BLU

TB5

TB4

S1 S2 S3

TB6

R.B

TRANSMISSION WIRES DC12V

2 1

TH1

3 2 1

D.SENSOR

CN31

(WHT)

INTAKE

CN20

(RED)

BLK

BLK BLK

2 1

TH2

LIQUID

CN21

(WHT)

BLK BLK

2 1

TH5

PIPE CN29 (BLK)

BLK BLK

VANE

CN6V

(WHT)

6 5 4 3 2 1

1 2 3 4 5

BRN RED ORN YLW GRN

CN2L

See fig :w1

SW1SWE

ON OFF

SW2

J24

J23

J22

J21

J15

J14

J13

J12

J11

D.U.M

CNP

(YLW)

POWER

CN03

(RED)

FUSE

ZNR

BRN

ORN

YLW

BLU BLU

TO OUTDOOR UNIT

MODELS

SW1

<w1>

PMH-P25/35/50BA

Manufacture

J11 J12 J13 J14 J15

Service board

SW2

PMH-P25BA

J21 J22 J23 J24

ON OFF

1234

12345

ON OFF

PMH-P35BA

J21 J22 J23 J24

ON OFF

1234

PMH-P50BA

J21 J22 J23 J24

ON OFF

1234

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

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

SYMBOL

[LEGEND]

I.B INDOOR CONTROLLER BOARD

CN2L CONNECTOR(LOSSNAY) CN32 CONNECTOR(REMOTE SWITCH)

R.B

WIRED REMOTE CONTROLLER BOARD DP DRAIN-UP MACHINE DS DRAIN SENSOR MF FAN MOTOR MV TB4

VANE MOTOR

TERMINAL BLOCK

(INDOOR / OUTDOOR CONNECTING LINE) TB5,TB6 TERMINAL BLOCK

(REMOTE CONTROL TRANSMISSION LINE) TH1 ROOM TEMP, THERMISTOR

(0:/15k", 25:/5.4k" DETECT) TH2 PIPE TEMP, THERMISTOR / LIQUID

(0:/15k", 25:/5.4k" DETECT) TH5 COND, / EVA, TEMP, THERMISTOR

(0:/15k", 25:/5.4k" DETECT)

CN41 CONNECTOR(HA TERMINAL-A) FUSE FUSE(6.3A , 250V) LED1 POWER SUPPLY(I.B) LED2 POWER SUPPLY(R.B) LED3 TRANSMISSION(INDOOR-OUTDOOR) SW1 JUMPER WIRE(MODEL SELECTION) SW2 JUMPER WIRE(CAPACITY CORD) SWE SWITCH(EMERGENCY OPERATION) T TRANSFORMER X1 RELAY(DRAIN PUMP) ZNR VARISTOR

NAME

WIRING DIAGRAM

PMH-P25BA PMH-P35BA PMH-P50BA

+ 19 hidden pages