Mitsubishi PLA-RP125EA, PLA-RP60EA, PLA-RP140EA, PLP-6EA, PLP-6EAE Service Manual

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SERVICE MANUAL

CONTENTS

1. REFERENCE MANUAL

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

2. SAFETY PRECAUTION

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

3. PARTS NAMES AND FUNCTIONS

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

4. SPECIFICATIONS

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

5. NOISE CRITERION CURVES

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

6. OUTLINES AND DIMENSIONS

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

7. WIRING DIAGRAM

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

8. REFRIGERANT SYSTEM DIAGRAM

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

9. TROUBLESHOOTING

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

10. SPECIAL FUNCTION

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

11. DISASSEMBLY PROCEDURE

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

INDOOR UNIT

Model name indication for MAIN UNIT

PARTS CATALOG (OCB626)

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

Model name indication for GRILLE

WIRED REMOTE

CONTROLLER

(Option)

WIRELESS REMOTE

CONTROLLER

(Option)

No. OCH626

REVISED EDITION-A

November 2016

Notes:

• This manual describes ser-

vice data of the indoor units

only.

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

Revision:

•

Added the model names of GRILLE to the cover page in

REVISED EDITION-A.

•

Some other descriptions have been also modified.

OCH626 is void.

Indoor unit [Model Name] [Service Ref.]

PLA-RP35EA PLA-RP50EA PLA-RP60EA PLA-RP71EA PLA-RP100EA PLA-RP125EA PLA-RP140EA

PLA-RP35EA.UK PLA-RP50EA.UK PLA-RP60EA.UK PLA-RP71EA.UK PLA-RP100EA.UK PLA-RP125EA.UK PLA-RP140EA.UK

Grille model [Model Name] [Service Ref.]

PLP-6EA PLP-6EAE PLP-6EAL PLP-6EALE PLP-6EAJ PLP-6EAJE PLP-6EALM PLP-6EALME

PLP-6EA PLP-6EAR1 PLP-6EAE PLP-6EAER1 PLP-6EAL PLP-6EALR1 PLP-6EALE PLP-6EALER1 PLP-6EAJ PLP-6EAJE PLP-6EALM PLP-6EALME

REFERENCE MANUAL

Service Ref. Service Manual No.

PUHZ-ZRP100/125/140/VKA3.UK PUHZ-ZRP100/125/140/YKA3.UK PUHZ-ZRP200/250YKA2.UK

Model Name

PUHZ-ZRP35/50VKA2 PUHZ-ZRP60/71VHA2

PUHZ-SHW112VHAR4.UK PUHZ-SHW112/140YHAR4.UK

OCH645/OCB645

OCH635/OCB635

PUHZ-ZRP35/50VKA2(-ER/ET) PUHZ-ZRP60/71VHA2(-ER/ET)

PUHZ-ZRP100/125/140VKA3 PUHZ-ZRP100/125/140YKA3 PUHZ-ZRP200/250YKA2

PUHZ-SHW230YKA2

OCH526/OCB526

OCH594/OCB594

PUHZ-SHW230YKA2

PUHZ-P200YKA2 PUHZ-P250YKA2

SUZ-KA35VA6.TH(-ER/ET) SUZ-KA50VA6.TH(-ER/ET) SUZ-KA60VA6.TH(-ER/ET) SUZ-KA71VA6.TH(-ER/ET)

TCH004

TCB004

SUZ-KA35VA6 SUZ-KA50VA6 SUZ-KA60VA6 SUZ-KA71VA6

OCH646/OCB646

PUHZ-P100VHA5 PUHZ-P100YHA3 PUHZ-P125VHA4 PUHZ-P125YHA2 PUHZ-P140VHA4 PUHZ-P140YHA2

PUHZ-SHW112VHA PUHZ-SHW112/140YHA

OCH647/OCB647

PUHZ-P200YKA2.UK PUHZ-P250YKA2.UK

PUHZ-P100VHA5.UK PUHZ-P100YHA3.UK PUHZ-P125VHA4.UK PUHZ-P125YHA2.UK PUHZ-P140VHA4.UK PUHZ-P140YHA2.UK

PUMY-P112/125/140VKM3 PUMY-P112/125/140YKM3 PUMY-P112/125/140YKME3

PUMY-P112/125/140VKM3(-BS) PUMY-P112/125/140YKM3(-BS) PUMY-P112/125/140YKME3(-BS)

OCH632/OCB632

PUMY-P200YKM1

PUMY-P200YKM1(-BS)

OCH634/OCB634

OBH723/OBB723

MXZ-3E54/68VA MXZ-4E72VA MXZ-4E83VA MXZ-5E102VA MXZ-4E83VAHZ

MXZ-3E54/68VA(-E1/-ET1/-ER1) MXZ-4E72VA(-E1/-ET1/-ER1) MXZ-4E83VA(-E2/-ET2/-ER1) MXZ-5E102VA(-E2/-ET2/-ER1) MXZ-4E83VAHZ(-E1/-ER1)

MXZ-6D122VA

MXZ-6D122VA(-E1/-ET1/-ER1)

OBH626/OBB626

OUTDOOR UNIT’S SERVICE MANUAL

OCH626A

SAFETY PRECAUTION

Cautions for units utilising refrigerant R410A

2-2. CAUTIONS RELATED TO NEW REFRIGERANT

2-1. ALWAYS OBSERVE FOR SAFETY

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

[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

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

Use new refrigerant pipes.

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

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

· 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.

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

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.

Never use any refrigerant other than that specified.

Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of. Correct refrigerant is specified in the manuals and on the spec labels provided with our products. We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by failure to follow the instructions.

Use the specified refrigerant only.

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

OCH626A

Electronic weighing scale

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

PARTS NAMES AND FUNCTIONS

3-1. INDOOR UNIT

Drain pipe

Filter

Vane

Gas pipe

Liquid pipe

Air outlet

Air intake (Intake grille)

i-see Sensor (Option)

Signal receiver (Option)

OCH626A

3-2. WIRELESS REMOTE CONTROLLER (Option)

Operation mode

Cool Dry Fan Auto Heat

Temperature setting

The units of temperature can be changed. For details, refer to the Installation Manual.

Not available

Appears when a non-supported function is selected.

Battery replacement indicator

Appears when the remaining battery power is low.

Vane setting

Step 1 Step 2 Step 3 Step 4 Step 5 Swing Auto

Fan speed setting

Set Temperature buttons

Set Time button (Sets the time)

Airow button (Changes up/down airow direction)

Mode button (Changes operation mode)

Timer ON button

Timer OFF button

OFF/ON button

Fan Speed button (Changes fan speed)

SET/SEND button

CANCEL button

Up/Down buttons

Menu button

i-see button

Reset button

Remote controller display

Battery replacement indicator

Transmission area

Not available

Weekly timer ON/OFF button

3D i-see Sensor (Air distribution)

Default Direct Indirect

When Direct or Indirect is selected, the vane setting is set to “Auto”.

OCH626A

3-3. Wired remote controller (Option) PAR-32MAA

The functions which can be used are restricted according to each model.

The main display can be displayed in 2 different modes: "Full" and "Basic." The initial setting is "Full."

Fri

Mode Temp. Fan

Room

Cool Auto

Set temp.

Fri

Cool

Mode Temp. Fan

AutoSet temp.

191716

6 8

7 9

Fan speed setting appears here.

4 Fan speed

Appears while the units are operated in the energy-save mode.

Appears while the outdoor units are operated in the silent mode.

Preset temperature appears here.

Appears when the ON/OFF operation is centrally controlled.

Current time appears here.

Appears when the buttons are locked.

Indoor unit operation mode appears here.

Appears when the operation mode is centrally controlled.

2 Preset temperature

1 Operation mode

Appears when the units are operated in the energy-save mode with 3D i-See sensor.

Indicates the louver setting.

Indicates the ventilation setting.

Appears when the On/Off timer or Night setback function is enabled.

Indicates when filter needs maintenance.

Appears when the filter reset function is centrally controlled.

Appears when the preset temperature is centrally controlled.

Appears when the Weekly timer is enabled.

Appears when the preset temperature range is restricted.

Functions of the corresponding buttons appear here.

5 Button function guide

Appears when the built-in thermistor on the remote controller is activated to monitor the room temperature (a).

appears when the thermistor on the indoor unit is activated to monitor the room temperature.

3 Clock

(See the Installation Manual.)

Current room temperature appears here.

11 Room temperature

(See the Installation Manual.)

Note: All icons are displayed for explanation.

1234

Press to turn ON/OFF the indoor unit.

1 ON/OFF button

This lamp lights up in green while the unit is in operation. It blinks while the remote controller is starting up or when there is an error.

Press to save the setting.

Main display: Press to change the operation mode. Main menu: Press to move the cursor down.

Press to return to the previous screen.

Main

display

: Press to decrease temperature.

Main menu: Press to move the cursor up.

Press to bring up the Main menu.

Main

display

: Press to increase temperature.

Main menu: Press to go to the previous page.

Operation settings will appear. When the backlight is off, pressing any button turns the backlight on and it will stay lit for a certain period of time depending on the screen.

Main

display

: Press to change the fan speed.

Main menu: Press to go to the next page.

6 ON/OFF lamp

2 SELECT button

7 Function button F1

3 RETURN button

8 Function button F2

4 MENU button

9 Function button F3

5 Backlit LCD

10 Function button F4

Fri

Room

Set temp.

Mode Temp. Fan

Cool Auto

Main

Main display:

Cursor Page

Main menu

Vane·Louver·Vent. (Lossnay) High power Timer Weekly timer OU silent mode

The functions of the function buttons change depending on the screen. Refer to the button function guide that appears at the bottom of the LCD for the functions they serve on a given screen. When the system is centrally controlled, the button function guide that corresponds to the locked button will not appear.

Main display Main menu

Function guide

7 8 9 0 7 8 9 0

• When the backlight is off, pressing any button turns the backlight on and does not perform its function. (except for the ON/OFF button)

• Most settings (except ON/OFF, mode, fan speed, temperature) can be made from the Menu screen.

Display

Full mode

Basic mode

Controller interface

Function buttons

10987

Indicates the vane setting.

OCH626A

Not all functions are available on all models of indoor units.

Energy saving

Auto return

Schedule

Night setback

Main menu

Press the

button.

Move the cursor to the desired item with the

and

buttons, and press the

SELECT

button.

Vane · Louver · Vent. (Lossnay)

High power

Weekly timer

Restriction

Maintenance

Initial setting

ON/OFF timer

Auto-OFF timer

Temp. range

Operation lock

Manual vane angle

Main/Sub

Timer

Main display

Contrast

Display details

Auto mode

Administrator password

Language selection

Service

Input maintenance info.

Function setting

Check

Self check

Maintenance password

Remote controller check

Test run

Clock

Auto descending panel

Menu structure

Filter information Error information

3D i-see Sensor

OCH626A

Setting and display items Setting details

Vane · Louver · Vent. (Lossnay)

Use to set the vane angle.

• Select a desired vane setting from 5 different settings.

Use to turn ON/OFF the louver.

• Select a desired setting from "ON" and "OFF."

Use to set the amount of ventilation.

• Select a desired setting from "OFF," "Low," and "High."

High power** Use to reach the comfortable room temperature quickly.

• Units can be operated in the High-power mode for up to 30 minutes.

Timer ON/OFF timer* Use to set the operation ON/OFF times.

• Time can be set in 5-minute increments.

Auto-Off timer Use to set the Auto-OFF time.

• Time can be set to a value from 30 to 240 in 10-minute increments.

Filter information Use to check the lter status.

• The lter sign can be reset.

Error information Use to check error information when an error occurs.

• Check code, error source, refrigerant address, unit model, manufacturing number, contact information (dealer's phone number) can be displayed.

(The unit model, manufacturing number, and contact information need to be registered in advance to be displayed.)

Weekly timer* Use to set the weekly operation ON/OFF times.

• Up to 8 operation patterns can be set for each day.

(Not valid when the ON/OFF timer is enabled.)

Energy saving Auto return Use to get the units to operate at the preset temperature after performing energy-save operation for a specied

time period.

• Time can be set to a value from 30 and 120 in 10-minute increments.

(This function will not be valid when the preset temperature ranges are restricted.)

Schedule* Set the start/stop times to operate the units in the energy-save mode for each day of the week, and set the

energy-saving rate.

• Up to 4 energy-save operation patterns can be set for each day.

• Time can be set in 5-minute increments.

• Energy-saving rate can be set to a value from 0% and 50 to 90% in 10% increments.

Night setback* Use to make Night setback settings.

•

Select "Yes" to enable the setting, and "No" to disable the setting. The temperature range and the start/stop times can be set.

Restriction Temp. range Use to restrict the preset temperature range.

• Different temperature ranges can be set for different operation modes.

Operation lock Use to lock selected functions.

• The locked functions cannot be operated.

Maintenance Auto descending panel Auto descending panel (Optional parts) UP/DOWN you can do.

Manual vane angle Use to set the vane angle for each vane to a xed position. 3D i-See sensor Use to set the following functions for 3D i-see Sensor.

• Air distribution • Energy saving option • Seasonal airow

Initial setting Main/Sub When connecting 2 remote controllers, one of them needs to be designated as a sub controller.

Clock Use to set the current time. Main display Use to switch between "Full" and "Basic" modes for the Main display.

• The initial setting is "Full."

Contrast Use to adjust screen contrast.

Initial setting Display details Make the settings for the remote controller related items as necessary.

Clock: The initial settings are "Yes" and "24h" format. Temperature: Set either Celsius (°C) or Fahrenheit (°F). Room temp. : Set Show or Hide. Auto mode: Set the Auto mode display or Only Auto display.

Auto mode Whether or not to use the AUTO mode can be selected by using the button.

This setting is valid only when indoor units with the AUTO mode function are connected.

Administrator

pass-

word

The administrator password is required to make the settings for the following items.

• Timer setting • Energy-save setting • Weekly timer setting

• Restriction setting • Outdoor unit silent mode setting • Night set back

Language selection Use to select the desired language.

Service Test run Select "Test run" from the Service menu to bring up the Test run menu.

• Test run • Drain pump test run

Input maintenance Select "Input maintenance Info." from the Service menu to bring up the Maintenance information screen.

The following settings can be made from the Maintenance Information screen.

• Model name input • Serial No. input • Dealer information input

Function setting Make the settings for the indoor unit functions via the remote controller as necessary. LOSSNAY setting (City Multi only)

This setting is required only when the operation of City Multi units is interlocked with LOSSNAY units.

Check Error history: Display the error history and execute "delete error history".

Refrigerant leak check (**): Refrigerant leaks can be judged. Smooth maintenance (**): The indoor and outdoor maintenance data can be displayed.

Request code (**): Details of the operation data including each thermistor temperature and error history can be checked. Self check Error history of each unit can be checked via the remote controller. Maintenance password Use to change the maintenance password. Remote controller check

When the remote controller does not work properly, use the remote controller checking function to trouble-

shoot the problem.

* Clock setting is required.

** The function is not available for SUZ models/some of P models.

OCH626A

SPECIFICATIONS

K/min

Pa (mmAq)

dB(A) mm (in) mm (in) mm (in) mm (in)

Mode Power supply (phase, cycle, voltage) Input Running current External finish (Grille) Heat exchanger Fan Fan (drive) o No. Fan motor output

Airflow (Low-Medium2-Medium1-High) External static pressure Booster heater Operation control & Thermostat Noise level SPL (Low-Medium2-Medium1-High) Field drain pipe O.D. Dimensions

Weight

W D H

INDOOR UNIT

Cooling

0.03

0.22

Heating

0.03

0.20

Single phase, 50Hz, 230 V

Munsell 1.0Y 9.2/0.2

Plate fin coil

Turbo fan (direct) o 1

0.050

12-14-16-18

0(direct blow)

–

Remote controller & built-in

27-29-31-32

32(1-1/4)

PLA-RP50EA.UK

UNIT : 840 (33-1/16) GRILLE : 950 (37-3/8) UNIT : 840 (33-1/16) GRILLE : 950 (37-3/8) UNIT : 258 (10-3/16) GRILLE : 40 (1-9/16)

UNIT : 19 GRILLE : 5

Service Ref.

Cooling

0.03

0.20

Heating

0.03

0.18

Single phase, 50Hz, 230 V

Munsell 1.0Y 9.2/0.2

Plate fin coil

Turbo fan (direct) o 1

0.050

11-13-15-16

0(direct blow)

–

Remote controller & built-in

26-28-29-31

32 (1-1/4)

K/min

Pa (mmAq)

dB(A) mm (in) mm (in) mm (in) mm (in)

Mode Power supply (phase, cycle, voltage) Input Running current External finish (Grille) Heat exchanger Fan Fan (drive) o No. Fan motor output

Airflow (Low-Medium2-Medium1-High) External static pressure Booster heater Operation control & Thermostat Noise level SPL(Low-Medium2-Medium1-High) Field drain pipe O.D. Dimensions

Weight

D H

INDOOR UNIT

PLA-RP35EA.UK

UNIT : 840 (33-1/16) GRILLE : 950 (37-3/8) UNIT : 840 (33-1/16) GRILLE : 950 (37-3/8) UNIT : 258 (10-3/16) GRILLE : 40 (1-9/16)

UNIT : 19 GRILLE : 5

Service Ref.

Cooling

0.03

0.24

Heating

0.03

0.22

Single phase, 50Hz, 230 V

Munsell 1.0Y 9.2/0.2

Plate fin coil

Turbo fan (direct) o 1

0.050

12-14-16-18

0(direct blow)

–

Remote controller & built-in

27-29-31-32

32(1-1/4)

K/min

Pa (mmAq)

dB(A) mm (in) mm (in) mm (in) mm (in)

W D H

INDOOR UNIT

PLA-RP60EA.UK

Mode Power supply (phase, cycle, voltage) Input Running current External finish (Grille) Heat exchanger Fan Fan (drive) o No. Fan motor output

Airflow (Low-Medium2-Medium1-High) External static pressure Booster heater Operation control & Thermostat Noise level SPL (Low-Medium2-Medium1-High) Field drain pipe O.D. Dimensions

Weight

UNIT : 840 (33-1/16) GRILLE : 950 (37-3/8) UNIT : 840 (33-1/16) GRILLE : 950 (37-3/8) UNIT : 258 (10-3/16) GRILLE : 40 (1-9/16)

UNIT : 21 GRILLE : 5

Service Ref.

OCH626A

Cooling

0.04

0.27

Heating

0.04

0.25

Single phase, 50Hz, 230 V

Munsell 1.0Y 9.2/0.2

Plate fin coil

Turbo fan (direct) o 1

0.05

14-17-19-21

0(direct blow)

–

Remote controller & built-in

28-30-32-34

32(1-1/4)

K/min

Pa (mmAq)

dB(A) mm (in) mm (in) mm (in) mm (in)

Mode Power supply (phase, cycle, voltage) Input Running current External finish (Grille) Heat exchanger Fan Fan (drive) o No. Fan motor output

Airflow (Low-Medium2-Medium1-High) External static pressure Booster heater Operation control & Thermostat Noise level SPL (Low-Medium2-Medium1-High) Field drain pipe O.D. Dimensions

Weight

D H

INDOOR UNIT

PLA-RP71EA.UK

UNIT : 840 (33-1/16) GRILLE : 950 (37-3/8) UNIT : 840 (33-1/16) GRILLE : 950 (37-3/8) UNIT : 258 (10-3/16) GRILLE : 40 (1-9/16)

UNIT : 21 GRILLE : 5

Service Ref.

Cooling

0.10

0.66

Heating

0.10

0.64

Single phase, 50Hz, 230 V

Munsell 1.0Y 9.2/0.2

Plate fin coil

Turbo fan (direct) o 1

0.120

21-25-28-31

0(direct blow)

–

Remote controller & built-in

33-37-41-44

32(1-1/4)

K/min

Pa (mmAq)

dB(A) mm (in) mm (in) mm (in) mm (in)

D H

INDOOR UNIT

PLA-RP125EA.UK

Mode Power supply (phase, cycle, voltage) Input Running current External finish (Grille) Heat exchanger Fan Fan (drive) o No. Fan motor output

Airflow (Low-Medium2-Medium1-High) External static pressure Booster heater Operation control & Thermostat Noise level SPL (Low-Medium2-Medium1-High) Field drain pipe O.D. Dimensions

Weight

UNIT : 840 (33-1/16) GRILLE : 950 (37-3/8) UNIT : 840 (33-1/16) GRILLE : 950 (37-3/8)

UNIT : 298 (11-3/4) GRILLE : 40 (1-9/16)

UNIT : 26 GRILLE : 5

Service Ref.

Cooling

0.07

0.46

Heating

0.07

0.44

Single phase, 50Hz, 230 V

Munsell 1.0Y 9.2/0.2

Plate fin coil

Turbo fan (direct) o 1

0.120

19-23-26-29

0(direct blow)

–

Remote controller & built-in

31-34-37-40

32(1-1/4)

K/min

Pa (mmAq)

dB(A) mm (in) mm (in) mm (in) mm (in)

D H

INDOOR UNIT

PLA-RP100EA.UK

Mode Power supply (phase, cycle, voltage) Input Running current External finish (Grille) Heat exchanger Fan Fan (drive) o No. Fan motor output

Airflow (Low-Medium2-Medium1-High) External static pressure Booster heater Operation control & Thermostat Noise level SPL (Low-Medium2-Medium1-High) Field drain pipe O.D. Dimensions

Weight

UNIT : 840 (33-1/16) GRILLE : 950 (37-3/8) UNIT : 840 (33-1/16) GRILLE : 950 (37-3/8)

UNIT : 298 (11-3/4) GRILLE : 40 (1-9/16)

UNIT : 24 GRILLE : 5

Service Ref.

OCH626A

K/min

Pa (mmAq)

dB(A) mm (in) mm (in) mm (in) mm (in)

Mode Power supply (phase, cycle, voltage) Input Running current External finish (Grille) Heat exchanger Fan Fan(drive) o No. Fan motor output

Airflow (Low-Medium2-Medium1-High) External static pressure Booster heater Operation control & Thermostat Noise level SPL (Low-Medium2-Medium1-High) Field drain pipe O.D. Dimensions

Weight

W D H

INDOOR UNIT

PLA-RP140EA.UK

Cooling

0.10

0.66

Heating

0.10

0.64

Single phase, 50Hz, 230 V

Munsell 1.0Y 9.2/0.2

Plate fin coil

Turbo fan (direct) o 1

0.120

24-26-29-32

0(direct blow)

–

Remote controller & built-in

36-39-42-44

32(1-1/4) UNIT : 840 (33-1/16) GRILLE : 950 (37-3/8) UNIT : 840 (33-1/16) GRILLE : 950 (37-3/8)

UNIT : 298 (11-3/4) GRILLE : 40 (1-9/16)

UNIT : 26 GRILLE : 5

Service Ref.

OCH626A

NOISE CRITERION CURVES

PLA-RP50EA.UK

NOTCH SPL(dB) LINE

High 32 Medium1 31 Medium2 29

Low 27

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

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

BAND CENTER FREQUENCIES, Hz

PLA-RP60EA.UK

PLA-RP35EA.UK

Low 26

NOTCH SPL(dB) LINE

High 31 Medium1 29 Medium2 28

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

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

BAND CENTER FREQUENCIES, Hz

PLA-RP71EA.UK

NOTCH SPL(dB) LINE

High 34 Medium1 32 Medium2 30

Low 28

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

BAND CENTER FREQUENCIES, Hz

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

PLA-RP100EA.UK

NOTCH SPL(dB) LINE

High 40 Medium1 37 Medium2 34

Low 31

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

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

BAND CENTER FREQUENCIES, Hz

OCH626A

MAIN UNIT

1.5 m

MICROPHONE

CEILING

PLA-RP140EA.UK

NOTCH SPL(dB) LINE

High 44 Medium1 42 Medium2 39

Low 36

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 (0 dB = 0.0002 μbar)

BAND CENTER FREQUENCIES, Hz

PLA-RP125EA.UK

NOTCH SPL(dB) LINE

High 44 Medium1 41 Medium2 37

Low 33

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

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

BAND CENTER FREQUENCIES, Hz

OCH626A

OUTLINES AND DIMENSIONS

80.5

REFRIGERANT PIPE

6.35 /

9.52

FLARED CONNECTION

1/4F / 3/8F

(COMPATIBLE)

35/50

PLA-RP.EA*：35/50/60/71/100/125/140

79.5

76.5

79.5

258

298 281

241

REFRIGERANT PIPE

15.88

FLARED CONNECTION 5/8F

REFRIGERANT PIPE

9.52

FLARED CONNECTION 3/8F

REFRIGERANT PIPE

12.7

FLARED CONNECTION 1/2F

REFRIGERANT PIPE

6.35

FLARED CONNECTION 1/4F

②①

100-140

265

E F

3500

LESS

4500

LESS

305

WALL

CEILING HEIGHT

SPACE IN THE

CEILING

GRILLE

2500mm OR MORE

FROM FLOOR

INDOOR UNIT

FLOOR

BETWEEN INDOOR UNIT

OBSTACLE

CEILING

3000 mm OR MORE

1500 mm OR MORE

1000 mm OR MORE

7ｍｍ

OR MORE

BETWEEN THE TOP OF UNIT

AND CEILING SLAB

NOTE1. CHOOSE THE GRILLE AMONG THE DEDICATED GRILLES.

2. REINFORCE THE SUSPENSION BOLT FOR EARTHQUAKE-RESISTANCE AS NEEDED.

3. FOR THE SUSPENSION BOLT, USE M10 OR W3/8.

(PROCURED AT THE LOCAL SITE.)

4. FOR DRAIN PIPE, USE VP-25（O.D.

Φ 32 PVC TUBE）.

DRAIN PUMP INCLUSION.

RAISE IS MAX 850㎜ FROM THE CEILING.

5. ELECTRICAL BOX MAY BE REMOVED FOR THE SERVICE PURPOSE.

MAKE SURE TO SLACK THE ELECTRICAL WIRE LITTLE BIT FOR

CONTROL/POWER WIRES CONNECTION.

6. THE HEIGHT OF THE INDOOR UNIT IS ABLE TO BE ADJUSTED

WITH THE GRILLE ATTACHED.

7. REQUIRES "E" OR MORE SPACE BETWEEN TRANSOM AND CEILING FOR THE INSTALLATION.

8. WHEN INSTALLING THE BRANCH DUCTS, BE SURE TO INSULATE ADEQUATELY.

OTHERWISE CONDENSATION AND DRIPPING MAY OCCUR.

(IT BECOMES THE CAUSE OF DEW DROPS/WEAR DEW.)

9. AS FOR NECESSARY INSTALLATION/SERVICE SPACE, PLEASE REFER TO THE

RIGHT AT FIGURE.

10. FOR THE INSTALLATION OF THE OPTIONAL HIGH EFFICIENCY FILTER OR

MULTI-FUNCTIONAL CASEMENT, REFER TO SPECIAL DRAWING.

CEILING

100

CUTOUT HOLE

125 BURRING HOLE PITCH

SELF-TAP 4 SCREWS：3 PLACES

DETAILS OF FRESH AIR INTAKE HOLE

158

120

THE BOTTOM OF

I-SEE SENSOR

SUSPENSION BOLT

LOWER EDGE

(CONNECTED THE ATTACED

DRAIN SOCKET)

CEILING

DRAIN PIPE

VP-25 CONNECTION

GRILLE

INDOOR UNIT/OUTDOOR UNIT

CONNECTING WIRE,

POWER SUPPLY WIRE ENTRY

MAIN UNIT

SUSPENSION BOLT

M10 OR W3/8

B40

17+5 0

50-70

140

170

105

628

190

150 CUTOUT HOLE

(CONNECTING TO BRANCH DUCT)

175 BURRING HOLE PITCH

SELF-TAP 4 SCREWS：4 PLACES

(CONNECTING TO BRANCH DUCT)

SELF-TAP 4 SCREWS：14 PLACES

(CONNECTING TO BRANCH DUCT)

350×100 CUTOUT HOLE

(CONNECTING TO BRANCH DUCT)

CEILING

GRILLE

90 100 100 90

420

130

100

350

155

167

CEILING

175 BURRING HOLE PITCH

SELF-TAP 4 SCREWS：4 PLACES

(CONNECTING TO BRANCH DUCT)

150 CUTOUT HOLE

(CONNECTING TO BRANCH DUCT)

GRILLE

REMOTE CONTROLLER

WIRE ENTRY

420

BRANCH DUCT HOLE

REMOTE

CONTROLLER

TERMINAL BLOCK

INDOOR UNIT/

OUTDOOR UNIT

CONNECTING

TERMINAL BLOCK

REMOTE CONTROLLER

WIRE ENTRY

BRANCH DUCT

HOLE

FRESH AIR

INTAKE HOLE

(CEILING HOLE)

(SUSPENSION BOLT PITCH)

(CEILING HOLE)

79.5

193

222

840

145

133

840

145

(20 )(20 )

860- 910

795

660

+40

20-45 20-45

COMPANY NAME

*CAN INSTALL TO THE CORNER

EXCEPT DRAIN PIPE CORNER

(NEED TO FUNCTION SETTING BY

REMOTE CONTROLLER)

I-SEE SENSOR CORNER PANEL

SOME GRILLES DO NOT HAVE THIS PART.

AIR INTAKE GRILLE

CORNER POCKET

VANE MOTOR

DRAIN HOLE

AUTO VANE

(AIR OUTLET HOLE)

(AIR INTAKE HOLE)

SIGNAL RECEIVER

SOME GRILLES DO NOT HAVE THIS PART.

508

530 950

8937

950

530

8937

508

AIR INTAKE GRILLE

FILTER

CEILING

AUTOMATIC FILTER ELEVATION PANEL UP/DOWN DIMENSION

Max. 4.0m

DETAILS OF SIGNAL RECEIVER

DEFROST/STANDBY LAMP

OPERATION

LAMP

RECEIVER

EMERGENCY OPERATION

SWITCH 〈HEATING〉 AND

EMERGENCY UP/DOWN

SWITCH〈DOWN〉

EMERGENCY OPERATION

SWITCH 〈COOLING〉 AND

EMERGENCY UP/DOWN

SWITCH〈UP〉

PLA-RP35EA.UK PLA-RP50EA.UK PLA-RP60EA.UK PLA-RP71EA.UK PLA-RP100EA.UK PLA-RP125EA.UK PLA-RP140EA.UK

Unit: mm

OCH626A

WIRING DIAGRAM

CN01

(BK)

CN3C

(BU)

BK BU GY

SYMBOL SYMBOLNAME NAME I.B

DP FS MF MV

INDOOR CONTROLLER BOARD CONNECTOR (LOSSNAY) CONNECTOR (REMOTE SWITCH) CONNECTOR (HA TERMINAL-A) CONNECTOR (CENTRALLY CONTROL) FUSE (T6.3AL250V) POWER SUPPLY (I.B) POWER SUPPLY (R.B) TRANSMISSION (INDOOR-OUTDOOR) SWITCH (MODEL SELECTION) Refer to <Table 1>. SWITCH (CAPACITY CODE) Refer to <Table 2>. CONNECTOR (EMERGENCY OPERATION) DRAIN PUMP DRAIN FLOAT SWITCH FAN MOTOR VANE MOTOR

TERMINAL BLOCK (INDOOR/OUTDOOR CONNECTING LINE) TERMINAL BLOCK (REMOTE CONTROLLER TRANSMISSION LINE) ROOM TEMP . THERMIST OR

(0°C / 15kΩ, 25°C / 5. 4kΩ DETECT)

PIPE TEMP . THERMIST OR/LIQUID

(0°C / 15kΩ, 25°C / 5. 4kΩ DETECT)

COND. / EVA. TEMP. THERMISTOR

(0°C / 15kΩ, 25°C / 5. 4kΩ DETECT)

WIRED REMOTE CONTROLLER

PCB OF SIGNAL RECEIVER BUZZER LED (OPERATION INDICATION : GREEN) LED (PREPARATION FOR HEATING : ORANGE) RECEIVING UNIT EMERGENCY OPERATION (HEAT / DOWN) EMERGENCY OPERATION (COOL / UP) I-SEE SENSOR MOTOR TERMINAL BLOCK (INDOOR UNIT POWER AND TRANSMISSION LINE)

TB4

TB5,TB6

TH1

TH2

TH5 R.B

OPTION PART

CN2L CN32

CN41

CN51 F1 LED1 LED2 LED3 SW1 SW2 SWE

[LEGEND]

[Self-diagnosis]

1. For details on how to operate self-diagnosis with the wireless remote controller,refer to the technical ma nuals etc.

W.B

MT TB2

BZ LED1 LED2 RU SW1 SW2

Check code

Symptom P1 P2

P5 P6 P8

P9 PA

Abnormality of room temperature thermistor (TH1). Abnormality of pipe temperature thermistor / Liquid (TH2).

Float switch connector open (FS).

Malfunction of Drain pump.

Freezing / overheating protection is working.

Abnormality of pipe temperature. Abnormality of pipe temperature

thermistor / Cond. /Eva. (TH5). Leakage error (refrigerant system)

Check code

Symptom

PB(Pb)

E0~E5

E6~EF FB(Fb)

U*, F*

Indoor unit fan motor error. Refrigerant circuit abnormal.

Abnormality of the signal transmission between

remote controller and indoor unit.

Abnormality of the signal transmission between

indoor unit and outdoor unit.

Abnormality of indoor controller board.

Abnormality in outdoor unit. Refer to outdoor unit wiring diagram.

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

:Connector.

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

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

4. This diagram shows the wiring of indoor and outdoor connecting wires (specification of 230V), adopting superimposed system of

power and signal.

● If the separate indoor/outdoor unit power supplied system is applied, refer to Fig 2.

● For power supply system of this unit, refer to the caution label

located near this diagram.

Do not connect 230 V power supply cable.

Cable strap

Be sure to connect the remote

controller cable (0.3E) to the locations shown in diagram

Secure with a

band at the location shown in the diagram

<Table 2> SW2 (CAPACITY CODE)

MODELS

Manufacture/Service

PLARP.EA

ON OFF

1 2 3 4 5 6

CAPACITY

Manufacture/Service

ON OFF

1 2 3 4 5

ON OFF

1 2 3 4 5

ON OFF

1 2 3 4 5

CAPACITY

Manufacture/Service

ON OFF

1 2 3 4 5

125

ON OFF

1 2 3 4 5

100

ON OFF

1 2 3 4 5

CAPACITY

Manufacture/Service

140

ON OFF

1 2 3 4 5

<Table 1> SW1 (MODEL SELECTION)

The black square ( ) indicates a switch position.

<Fig. 1>

Notes:

Caution when connecting the remote controller cable to the terminal block TB5

119

1 5

CNV

(WH)

CN32 (WH)

CN51 (WH)

J41 J42

SW2 SW1

Refer to Table 1 and 2

LED2

5555

MVMVMVMV

TB4

LED1

CN3C

(BU)

–

TB2

S2 S3

S1 S2 S3

CN01

(BK)

CN2L (RD)

ON OFF

SWE

CN20

(RD)

CN90 (WH)

I-SEE

SENSOR

CN4F

(WH)

CN44

(WH)

LED3

tº tº tº

TH2

TH5

TH1

I-SEE SENSOR

CORNER PANEL

(OPTION PART)

TB5

R.B

I.B

2 1

1 4

CN41 (WH)

5 1

CN105

(RD)

4 1441

4 1

2 1

CNP

(WH)

2 1

TB6

2 1

CN4Z

(WH)

CN5Y (WH)

CN4G

AUTOMATIC FILTER ELEVATION PANEL (OPTION PART)

CN4G

(BU)

W.B

LED2

LED1 SW2

SW1

CNB

CNMF

(WH)

TO OUTDOOR UNIT

POWER SUPPLY ~(1 PHASE) 230V 50Hz

<Fig. 2>

11 5

SIGNAL RECEIVER CORNER PANEL (OPTION PART)

PLA-RP35EA.UK PLA-RP50EA.UK PLA-RP60EA.UK PLA-RP71EA.UK PLA-RP100EA.UK PLA-RP125EA.UK PLA-RP140EA.UK

OCH626A

Thermistor TH2 (Pipe temperature/ liquid)

Distributor with strainer (#50)

Thermistor TH5 (Cond./ eva.temperature)

Thermistor TH1 (Room temperature)

Refrigerant flow in cooling Refrigerant flow in heating

Strainer (#50)

Heat exchanger

Refrigerant GAS pipe connection (Flare)

Refrigerant LIQUID pipe connection (Flare)

PLA-RP35EA.UK PLA-RP50EA.UK PLA-RP60EA.UK PLA-RP71EA.UK PLA-RP100EA.UK PLA-RP125EA.UK PLA-RP140EA.UK

REFRIGERANT SYSTEM DIAGRAM

OCH626A

Present and past check codes are logged, and they can be displayed on the wired remote controller or controller board of outdoor unit. Actions to be taken for service, which depends on whether or not the trouble is reoccurring in the field, are summa-

rized in the table below. Check the contents below before investigating details.

9-1. TROUBLESHOOTING

Unit conditions at service

Check 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 “9-3. SELF-DIAGNOSIS ACTION TABLE”.

Conduct troubleshooting and ascertain the cause of the trouble according to “9-4. TROUBLESHOOTING OF PROBLEMS”.

The trouble is not reoccurring.

Logged

Not logged

1 Consider the temporary defects such as the work of protection devices in the refrigerant circuit including compressor, poor connection of wiring, noise, etc. Re-check the symptom, and check the installation environment, refrigerant amount, weather when the trouble occurred, matters related to wiring, etc.

Reset check code logs and restart the unit after finishing service. 3 There is no abnormality in electrical component, controller board, remote controller, etc.

1 Re-check the abnormal symptom. 2 Conduct troubleshooting and ascertain the cause of

the trouble

according to “9-4. TROUBLESHOOTING OF PROBLEMS”. 3 Continue to operate unit for the time being if the cause is not ascertained. 4 There is no abnormality concerning of parts such as

electrical component, controller board, remote controller,

etc.

TROUBLESHOOTING

<Self-check>

9-2. MALFUNCTION-DIAGNOSIS METHOD BY 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.

1. Press the button 1 to stop the air conditioner.

• If the weekly timer is enabled ( is on), press the button 3 to disable it ( is off).

2. Press the

button 2 for 5 seconds.

• A comes on and the unit enters the self-check mode.

3. Press the button 5 to select the refrigerant address (M-NET address) B of the indoor unit for

which you want to perform the self-check.

4. Press the button 4.

• If an error is detected, the check code is indicated by the number of beeps from the indoor unit and the number of blinks of the OPERATION INDICATOR lamp.

5. Press the button 1.

• A and the refrigerant address (M-NET address) B go off and the self-check is completed.

OCH626A

Continued to the next page

OPERATION INDICATOR

lamp blinking pattern

Beep Beep Beep Beep Beep Beep Beep

Off

Approx. 2.5 s

Approx. 3 s

0.5 sOn0.5 sOn0.5 s

0.5 s

Off

Approx. 2.5 s

Approx. 3 s

0.5 sOn0.5 s

· · · 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

Self-check

starts

(Start signal

received)

Beeper sounds

[Output pattern B]

[Output pattern A]

OPERATION INDICATOR

lamp blinking pattern

Beep

Beep Beep Beep Beep Beep Beep

Off

Approx. 2.5 sOn0.5 sOn0.5 sOn0.5 s

0.5 s

Off

Approx. 2.5 sOn0.5 sOn0.5 s

· · · 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] Errors detected by indoor unit

Wireless remote controller

Wired remote

controller

Symptom Remark

Beeper sounds/OPERATION

INDICATOR lamp blinks

(Number of times)

Check code

1 P1 Intake sensor error 2

P2 Pipe (TH2) sensor error

P9 Pipe (TH5) sensor error

3 E6, E7 Indoor/indoor unit communication error 4 P4 Drain sensor error / Float switch connector open

P5 Drain overow protection operation

PA Forced compressor error (due to water leakage abnormality)

6 P6

Freeze (during cooling operation)/Overheat protection operation (during heating operation)

7 EE Communication error between indoor and outdoor unit 8 P8 Pipe temperature error 9 E4, E5 Communication error between wired remote controller and indoor unit

10 — —

11 Pb Indoor unit fan motor error 12 Fb Indoor unit control system error (memory error, etc.) 14 PL Refrigerant circuit abnormal — E0,E3 Remote controller transmission error — E1,E2 Remote controller control board error

[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.) Note: The supported check codes may vary depending on the connected outdoor unit.

Wireless remote controller

Wired remote

controller

Symptom Remark

Beeper sounds/OPERATION

INDICATOR lamp blinks

(Number of times)

Check code

E9 Indoor/outdoor unit communication error

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

UP Compressor overcurrent interruption

U3, U4 Open/short of outdoor unit thermistors

UF Compressor overcurrent interruption (When compressor locked)

U2 Abnormal high discharging temperature/49C worked/insufcient refrigerant

U1, Ud Abnormal high pressure (63H worked)/Overheat protection operation

U5 Abnormal temperature of heat sink

U8 Outdoor unit fan protection stop

U6 Compressor overcurrent interruption/Abnormal of power module

U7 Abnormality of super heat due to low discharge temperature

U9, UH

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

— —

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

Notes:

1. If the beeper does not sound again after the initial 2 beeps to conrm the self-check start signal was received and the OPERATION INDICATOR lamp does not come on, there are no error records.

2. If the beeper sounds 3 times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 seconds)” after the initial 2 beeps to conrm the self-check start signal was received, the specied refrigerant address is incorrect.

• On wireless remote controller The continuous buzzer sounds from receiving section of indoor unit. Blink of operation lamp

• On wired remote controller Check code displayed in the LCD.

OCH626A

•

If the unit cannot be operated properly after the test run, refer to the following table to find out the cause.

Symptom

Cause

Wired remote controller

On the wireless remote controller with condition above, following phenomena take place.

• No signals from the remote controller can be received.

• Operation lamp is blinking.

• The buzzer makes a short ping sound.

PLEASE WAIT

PLEASE WAIT → check code

No messages appear even when operation switch is turned ON (operation lamp does not light up).

For about 2 minutes after power-on

Subsequent to about 2 minutes after power-on

•

For about 2 minutes after power-on,operation

of the remote controller is not possible due to system startup. (Correct operation)

•Connector for the outdoor unit’s protection device is not connected.

•Reverse or open phase wiring for the outdoor unit’s power terminal block

•Incorrect wiring between indoor and outdoor units. (incorrect polarity of S1, S2, S3)

•Remote controller wire short

Note: Operation is not possible for about 30 seconds after cancellation of function selection. (Correct operation)

For description of each LED (LED1, 2, 3) provided on the indoor controller, refer to the following table.

LED1 (power for microprocessor)

Indicates whether control power is supplied. Make sure that this LED is always lit.

LED2 (power for remote controller)

Indicates whether power is supplied to the remote controller. This LED lights only in the case of the indoor unit which is connected to the outdoor unit refrigerant address “0”.

LED3 (communication between indoor and outdoor units)

Indicates state of communication between the indoor and outdoor units. Make sure that this LED is always blinking.

OCH626A

9-3. SELF-DIAGNOSIS ACTION TABLE

Note: Errors to be detected in outdoor unit, such as codes starting with

F, U or E (excluding E0 to E7), are not covered in this document. Please refer to the outdoor unit's service manual for the details.

Check code

Abnormal point and detection method

Cause

Countermeasure

Room temperature thermistor (TH1)

1 The unit is in 3-minute resume

prevention mode if short/open of thermistor is detected. Abnormal if the unit does not reset normally after 3 minutes. (The unit returns to normal operation, if it has been reset normally.)

2 Constantly detected during cooling,

drying, and heating operation.

Short: −90: or more Open: −40: or less

1 Defective thermistor

characteristics

2 Contact failure of connector

(CN20) on the indoor controller board (Insert failure)

3 Breaking of wire or contact

failure of thermistor wiring

4 Defective indoor controller

board

1–3 Check resistance value of thermistor.

0: 15.0 k" 10: 9.6 k" 20: 6.3 k" 30: 4.3 k" 40: 3.0 k"

If you put force on (draw or bend) the lead wire while measuring resistance value of thermistor, breaking of wire or contact failure can be

detected.

2 Check contact failure of connector (CN20)

on the indoor controller board. Refer to "9-7. TEST POINT DIAGRAM".

Turn the power on again and check restart after inserting connector again.

4 Check room temperature display on remote

controller.

Replace indoor controller board if there

is abnormal difference with actual room temperature.

Turn the power off, and on again to operate after check.

Pipe temperature thermistor/Liquid (TH2)

1 The unit is in 3-minute resume

prevention mode if short/open of thermistor is detected. Abnormal if the unit does not reset normally after 3 minutes. (The unit returns to normal operation, if it has been reset normally.)

2 Constantly detected during cooling,

drying, and heating (except defrosting) operation

Short: 90: or more Open: −40: or less

1 Defective thermistor

characteristics

2 Contact failure of connector

(CN44) on the indoor controller board (Insert failure)

3 Breaking of wire or contact

failure of thermistor wiring

4 Defective refrigerant circuit is

causing thermistor temperature of 90: or more or −40: or

less.

5 Defective indoor controller

board

1–3 Check resistance value of thermistor. For characteristics, refer to (P1) above. 2 Check contact failure of connector (CN44)

on the indoor controller board. Refer to "9-7. TEST POINT DIAGRAM". Turn the power on and check restart after inserting connector again.

4 Check pipe <liquid> temperature with remote

controller in test run mode. If pipe <liquid> temperature is extremely low (in cooling mode) or high (in heating mode), refrigerant circuit may have defective.

5 Check pipe <liquid> temperature with

remote controller in test run mode. If there is extremely difference with actual pipe <liquid> temperature, replace indoor controller board.

Turn the power off, and on again to operate after check.

Contact failure of drain float switch (CN4F)

• Extract when the connector of drain float switch is disconnected.

(3 and 4 of connector CN4F is not

short-circuited.)

• Constantly detected during operation

1 Contact failure of connector (Insert failure)

2 Defective indoor controller

board

Check contact failure of float switch connector.

Turn the power on again and check after

inserting connector again.

2 Operate with connector (CN4F) short-

circuited.

Replace indoor controller board if abnormality

reappears.

Drain over flow protection operation

1 Suspensive abnormality, if drain float

switch is detected to be underwater for 1 minute and 30 seconds continuously with drain pump on.

Compressor and indoor fan will be

turned off.

2 Drain pump is abnormal if the condition

above is detected during suspensive abnormality.

3 Constantly detected during drain pump

operation

1 Malfunction of drain pump 2 Defective drain

Clogged drain pump Clogged drain pipe 3 Defective drain float switch

Jamming of the drain float switch or malfunction of moving parts causing the drain float switch to be detected under water (Switch On)

4 Defective indoor-controller

board

1 Check if drain pump works. 2 Check drain function.

3 Remove drain float switch connector CN4F

and check if it is short (Switch On) with the moving part of float switch UP, or OPEN with the moving part of float switch down.

Replace float switch if it is short with the

moving part of float switch down.

4 Replace indoor controller board if it is short-

circuited between 3–4 of the drain float switch connector CN4F and abnormality reappears.

It is not abnormal if there is no problem about the above-mentioned 1–4. Turn the power off, and on again to operate after check.

OCH626A

Check code

Abnormal point and detection method

Cause

Countermeasure

Freeze/overheat protection is operating

1 Freeze protection (Cooling mode)

The unit is in 6-minute resume preven-

tion mode if pipe <liquid or condenser/ evaporator> temperature stays under

−15: for 3 minutes, 3 minutes after the compressor started. Abnormal if it stays under −15: for 3 minutes again within 16 minutes after 6-minute resume pre-

vention mode.

2 Overheat protection (Heating mode)

The unit is in 6-minute resume prevention mode if pipe <liquid or condenser/ evaporator> temperature is detected as over 70: after the compressor started. Abnormal if the temperature of over 70: is detected again within 30 minutes after 6-minute resume prevention mode.

1 Slight temperature difference

between indoor room temperature and pipe <liquid or condenser/evaporator> temperature thermistor

• Shortage of refrigerant

• Disconnected holder of pipe <liquid or condenser/ evaporator> thermistor

• Defective refrigerant circuit

2 Converse connection of

extension pipe (on plural units

connection)

3 Converse wiring of indoor/

outdoor unit connecting wire (on plural units connection)

4 Defective detection of indoor

room temperature and pipe <condenser/evaporator> temperature thermistor

5 Stop valve is not opened

completely.

(Cooling or drying mode)

1 Clogged filter (reduced airflow) 2 Short cycle of air path 3 Low-load (low temperature)

operation out of the tolerance range

4 Defective indoor fan motor

• Fan motor is defective.

• Indoor controller board is defec-

tive.

5 Defective outdoor fan control 6 Overcharge of refrigerant 7 Defective refrigerant circuit

(clogs)

(Heating mode)

1 Clogged filter (reduced airflow) 2 Short cycle of air path 3 Over-load (high temperature)

operation out of the tolerance range

4 Defective indoor fan motor

• Fan motor is defective.

• Indoor controller board is defec-

tive.

5 Defective outdoor fan control 6 Overcharge of refrigerant 7 Defective refrigerant circuit

(clogs)

8 Bypass circuit of outdoor unit

is defective.

(Cooling or drying mode)

1 Check clogs of the filter. 2 Remove blockage.

4 Refer to "9-6. HOW TO CHECK THE

PARTS".

5 Check outdoor fan motor. 67 Check operating condition of refrigerant

circuit.

(Heating mode)

1 Check clogs of the filter. 2 Remove blockage.

4 Refer to "9-6. HOW TO CHECK THE

PARTS".

5 Check outdoor fan motor. 6–8 Check operating condition of refrigerant

circuit.

Pipe temperature

<Cooling mode> Detected as abnormal when the pipe temperature is not in the cooling range 3 minutes after compressor start and 6 minutes after the liquid or condenser/evaporator pipe is out of cooling range.

Note 1:

It takes at least 9 minutes to detect.

Note 2: Abnormality P8 is not detected in

drying mode.

Cooling range : -3°C ] (TH-TH1) TH: Lower temperature between liquid pipe

temperature (TH2) and condenser/ evaporator temperature (TH5)

TH1: Intake temperature

<Heating mode> When 10 seconds have passed after the compressor starts operation and the hot adjustment mode has finished, the unit is detected as abnormal when condenser/ evaporator pipe temperature is not in heating range within 20 minutes.

Note 3: It takes at least 27 minutes to

detect abnormality.

Note 4: It excludes the period of defrosting.

(Detection restarts when defrosting

mode is over.)

Heating range : 3°C [ (TH5-TH1)

1–4 Check pipe <liquid or condenser/evapora-

tor> temperature with room temperature display on remote controller and outdoor controller circuit board.

Pipe <liquid or condenser/evaporator>

temperature display is indicated by setting SW2 of outdoor controller circuit board as follows.

23 Check converse connection of extension

pipe or converse wiring of indoor/outdoor unit connecting wire.

Conduct temperature check with outdoor controller circuit board after connecting ‘A-Control Service Tool(PAC-SK52ST)’.

(

)

Drain pump lock protection operation

1 Malfunction of drain pump 2 Clogged drain pump 3 Contact failure of connector 4 Defective indoor controller

board

1 Check if drain pump works. 2 Check if drain pump works. 3 Check contact failure of connector CNP 4 Press the indoor emergency switch (SWE)

to check the voltage between CNP1-3.

•If

13 V DC, change the drain pump.

•If not 13 V DC, change the indoor con

troller board.

1 Error postponement, if drain pump stops

for 5 seconds continuously while drain pump is operating.

2 Drain pump is abnormal if above condi-

tion is repeated 4 times after error postponement is detected.

OCH626A

Check code

Abnormal point and detection method

Cause

Countermeasure

Pipe temperature thermistor/ Condenser-Evaporator (TH5)

1 The unit is in 3-minute resume protec-

tion mode if short/open of thermistor is detected. Abnormal if the unit does not get back to normal within 3 minutes. (The unit returns to normal operation, if it has been reset normally.)

2 Constantly detected during cooling,

drying, and heating operation (except defrosting)

Short: 90: or more Open: −40: or less

1 Defective thermistor

characteristics

2 Contact failure of connector

(CN44) on the indoor controller board (Insert failure)

3 Breaking of wire or contact failure of thermistor wiring 4 Temperature of thermistor is

90: or more or -40: or less caused by defective refrigerant circuit.

5 Defective indoor controller

board

1–3 Check resistance value of thermistor. For characteristics, refer to (P1) above. 2 Check contact failure of connector (CN44)

on the indoor controller board.

Refer to "9-7. TEST POINT DIAGRAM". Turn the power on and check restart after

inserting connector again.

4 Operate in test run mode and check pipe

<condenser/evaporator> temperature with outdoor controller circuit board. If pipe <condenser/evaporator> temperature is extremely low (in cooling mode) or high (in heating mode), refrigerant circuit may have defect.

5 Operate in test run mode and check pipe

<condenser/evaporator> temperature with outdoor control circuit board. If there is extreme difference with actual pipe <condenser / evaporator> temperature, replace indoor controller board.

There is no abnormality if none of above

comes within the unit.

Turn the power off, and on again to operate.

Remote controller transmission error(E0)/signal receiving error(E4)

1 Abnormal if main or sub remote con-

troller cannot receive any transmission

normally from indoor unit of refrigerant address “0” for 3 minutes.

(Check code : E0) 2 Abnormal if sub remote controller could

not receive any signal for 2 minutes. (Check code: E0)

1 Abnormal if indoor controller board can

not receive any data normally from

remote controller board or from other indoor controller board for 3 minutes. (Check code: E4)

2 Indoor controller board cannot receive

any signal from remote controller for 2 minutes. (Check code: E4)

1 Check disconnection or looseness of indoor

unit or transmission wire of remote controller.

2 Set one of the remote controllers “main” if there is no problem with the action above. 3 Check wiring of remote controller.

• Total wiring length: max. 500m (Do not use cable x 3 or more.)

• The number of connecting indoor units: max. 16 units

• The number of connecting remote controller: max. 2 units

If the cause of trouble is not any of 1–3 above, 4 Diagnose remote controllers.

a) When “RC OK” is displayed,

Remote controllers have no problem. Turn the power off, and on again to check. If abnormality generates again, replace indoor controller board.

b) When “RC NG” is displayed,

Replace remote controller.

c) When “RC E3” or “ERC 00-66” is dis-

played, noise may be causing abnormality.

Note: If the unit is not normal after replac

ing indoor controller board in group control, indoor controller board of address “0” may be abnormal.

Remote controller transmission error(E3)/signal receiving error(E5)

1 Abnormal if remote controller could not

find blank of transmission path for 6 seconds and could not transmit.

(Check code: E3)

2 Remote controller receives transmitted

data at the same time and compares the received and transmitted data. Abnormal if these data are judged to be different 30 continuous times. (Check code: E3)

1 Abnormal if indoor controller board could

not find blank of transmission path.

(Check code: E5) 2 Indoor controller board receives trans-

mitted data at the same time and compares the received and transmitted data. Abnormal if these data are judged to be different 30 continuous times. (Check code: E5)

1 Set a remote controller to main, and the

other to sub.

2 Remote controller is connected with only one

indoor unit.

3 The address changes to a separate setting. 4–6 Diagnose remote controller.

a) When “RC OK” is displayed, remote con-

trollers have no problem.

Turn the power off,and on again to check.

When becoming abnormal again, replace

indoor controller board.

b) When “RC NG” is displayed, replace

remote controller.

c) When “RC E3” or “ERC 00-66” is dis-

played, noise may be causing abnormal-

ity.

1 Contact failure at transmission

wire of remote controller

2 All remote controllers are set

as “sub” remote controller. In this case, E0 is displayed on remote controller, and E4 is displayed at LED (LED1, LED2) on the outdoor controller circuit board.

3 Miswiring of remote controller 4 Defective transmitting receiving

circuit of remote controller

5 Defective transmitting receiving

circuit of indoor controller board of refrigerant addresses “0”.

6 Noise has entered into the

transmission wire of remote

controller.

1 2 remote controllers are set as

“main.”

(In case of 2 remote con trollers) 2 Remote controller is connected

with 2 indoor units or more.

3 Repetition of refrigerant

address

4 Defective transmitting receiving

circuit of remote controller

5 Defective transmitting receiving

circuit of indoor controller board

6 Noise has entered into trans-

mission wire of remote control-

ler.

In case of checking pipe temperature with outdoor controller circuit board, be sure to connect A-control service tool (PAC-SK52ST).

(

)

OCH626A

Check code

Abnormal point and detection method

Cause

Countermeasure

1 Contact failure, short circuit or,

miswiring (converse wiring) of indoor/outdoor unit connecting wire

2 Defective transmitting receiving

circuit of indoor controller board

3 Defective transmitting receiving

circuit of indoor controller board

4 Noise has entered into indoor/

outdoor unit connecting wire.

5 Malfunction of fan motor

Note: Check LED display on the outdoor control

circuit board. (Connect A-control service tool, PAC-SK52ST.)

Refer to outdoor unit service manual. 1 Check disconnection or looseness of indoor/

outdoor unit connecting wire of indoor unit or outdoor unit. Check all the units in case of twin triple indoor unit system.

2-4 Turn the power off, and on again to

check. If abnormality generates again, replace indoor controller board or outdoor controller circuit board.

5 Turn the power off, and on again after remov-

ing the fan motor connectors (CNF1,2) from outdoor controller board.

• If normal, change fan motor.

• If abnormal reappears, change outdoor controller board.

Note: Other indoor controller board may have

defect in the case of twin triple indoor unit system.

Indoor/outdoor unit communication error (Transmitting error)

Abnormal if “1” receiving is detected 30 times continuously though indoor controller board has transmitted “0”.

1 Defective transmitting receiving

circuit of indoor controller board

2 Noise has entered into power

supply.

3 Noise has entered into outdoor

control wire.

1–3 Turn the power off, and on again to check.

If abnormality generates again, replace indoor controller board.

Indoor/outdoor unit communication error (Signal receiving error)

1 Abnormal if indoor controller board

cannot receive any signal normally for 6 minutes after turning the power on.

2 Abnormal if indoor controller board

cannot receive any signal normally for 3 minutes.

3 Consider the unit abnormal under the

following condition: When 2 or more indoor units are connected to an outdoor unit, indoor controller board cannot receive a signal for 3 minutes from outdoor controller circuit board, a signal which allows outdoor controller circuit board to transmit signals.

Indoor controller board

Abnormal if data cannot be read normally from the nonvolatile memory of the indoor controller board.

1 Defective indoor controller

board

1 Replace indoor controller board.

Remote controller control board

1 Abnormal if data cannot be read nor-

mally from the nonvolatile memory of the remote controller control board.

(Check code: E1)

2 Abnormal if the clock function of remote

controller cannot be operated normally.

(Check code: E2)

1 Defective remote controller 1 Replace remote controller.

Forced compressor stop (due to water leakage abnormality)

1 The unit has a water leakage abnor-

mality when the following conditions, a) and b), are satisfied while the abovementioned detection is performed.

a) The intake temperature subtracted

with liquid pipe temperature detects to be less than −10: for a total of 30 minutes. (When the drain sensor is detected to be NOT soaked in the water, the detection record of a) and b) will be cleared.)

b) Drain float switch detects to be in the

water for more than 15 minutes.

Note: Once the water leakage abnormality

is detected, abnormality state will not be released until the main power is

reset.

1 Drain pump trouble 2 Drain defective

• Drain pump clogging

• Drain pipe clogging

3 Open circuit of float switch

4 Contact failure of float switch

connector

5 Dew condensation on float

switch

• Drain water descends along lead wire.

• Drain water is waving due to filter clogging.

6 Extension piping connection

difference at twin, triple or quadruple system

7 Miswiring of indoor/ outdoor

connecting at twin, triple or quadruple system

8 Room temperature thermistor/

liquid pipe temperature thermis-

tor detection is defective.

1 Check the drain pump.

2 Check whether water can be drained.

3 Check the resistance of the float switch.

4 Check the connector contact failure.

5 Check the float switch leadwire mounted.

Check the filter clogging.

6 Check the piping connection.

7 Check the indoor/outdoor connecting wires.

8 Check the room temperature display of

remote controller.

Check the indoor liquid pipe temperature dis

play of outdoor controller board.

OCH626A

Check code

Abnormal point and detection method

Cause

Countermeasure

Abnormal refrigerant circuit

During Cooling, Dry, or Auto Cooling

operation, the following conditions are regarded as failures when detected for 1

second.

a) The compressor continues to run for 30

or more seconds.

b) The liquid pipe temperature or the

condenser/evaporator temperature is 75°C or more.

These detected errors will not be cancelled until the power source is reset.

1 Abnormal operation of 4-way

valve

2 Disconnection of or leakage in

refrigerant pipes

3 Air into refrigerant piping 4 Abnormal operation (no rotation)

of indoor fan

• Defective fan motor

• Defective indoor control board. 5 Defective refrigerant circuit

(clogging)

1 When this error occurs, be sure to replace

the 4-way valve.

2 Check refrigerant pipes for disconnection or

leakage.

3 After the recovery of refrigerant, vacuum dry

the whole refrigerant circuit.

4 Refer to section "9-6-2. DC Fan motor (FAN

MOTOR/INDOOR CONTROLLER BOARD) ".

5 Check refrigerant circuit for operation.

To avoid entry of moisture or air into refrigerant circuit which could cause abnormal high pressure, purge air in refrigerant circuit or replace refrigerant.

1 Defective fan motor 2 Defective indoor controller board

12 Refer to "9-6-2. DC Fan Motor (FAN

MOTOR/INDOOR CONTROLLER

BOARD)".

Fan motor trouble

OCH626A

9-4. TROUBLESHOOTING OF PROBLEMS

Note: Refer to the outdoor unit's service manual for the detail of remote controller.

Phenomena

Cause

Countermeasure

(1) LED2 on indoor controller board

is off.

• When LED1 on indoor controller board is also off. 1 Power supply of rated voltage is not supplied to out-

door unit.

2 Defective outdoor controller circuit board

3 Power supply of 220–240 V is not supplied to indoor

unit.

4 Defective indoor controller board

(For the separate indoor/outdoor unit power sup-

ply system)

1 Power supply of 220–240 V AC is not supplied to

indoor unit.

2 The connectors of the optional replacement kit are

not used.

3 Defective indoor controller board

1 Check the voltage of outdoor power

supply terminal block (L, N) or (L

3, N).

• When 220–240 V AC is not detected, check the power wiring to outdoor unit and the breaker.

• When 220–240 V AC is detected, check

2 (below).

2 Check the voltage between outdoor

terminal block S1 and S2.

• When 220–240 V AC is not detected,

—check the fuse on outdoor controller

circuit board.

—check the wiring connection.

• When 220–240 V AC is detected, check

3 (below).

3 Check the voltage between indoor

terminal block S1 and S2.

• When 220–240 V AC is not detected, check indoor/outdoor unit connecting wire for miswiring.

• When 220–240 V AC is detected, check

4 (below).

4 Check the fuse on indoor controller

board. Check the wiring connection. If no problem is found, indoor controller

board is defective.

1 Check the voltage of indoor power supply

terminal block (L,N).

• When 220–240 V AC is not detected, check the power supply wiring.

• When 220–240 V AC is detected, check

2 (below).

2 Check that there is no problem in the

method of connecting the connectors.

• When there are problems in the method of connecting the connectors, connect the connector correctly referring to installation manual of an optional kit.

• When there is no problem in the method of connecting the connectors, check 3 (below).

3 Check the fuse on indoor controller

board. Check the wiring connection. If no problem is found, indoor controller

board is defective.

• When LED1 on indoor controller board is lit. 1 Mis-setting of refrigerant address for outdoor unit

(There is no unit corresponding to refrigerant address “0”.)

1 Check again the setting of refrigerant

address for outdoor unit. Set the refrigerant address to “0”. (For grouping control system under which 2 or more outdoor units are connected, set one of the units to “0”.) Set refrigerant address using SW1 (3-6) on outdoor controller circuit board.

OCH626A

(3) Upward/downward vane perfor-

mance failure

1 The vane is not downward during defrosting and heat

preparation and when the thermostat is OFF in HEAT mode. (Working of COOL protection function)

2 Vane motor does not rotate.

• Defective vane motor

• Breaking of wire or connection failure of connector

3 Upward/downward vane does not work.

• The vane is set to fixed position.

1 Normal operation (The vane is set to

horizontal regardless of remote control.)

2 Check 2 (left).

• Check the vane motor. (Refer to “9-6. HOW TO CHECK THE PARTS”.)

• Check for breaking of wire or connection failure of connector.

3 Normal operation (Each connector on

vane motor side is disconnected or

setting the fixed vanes by wired remote

controller.)

Phenomena

Cause

Countermeasure

(2) LED2 on indoor controller board

is blinking.

• When LED1 on indoor controller board is also blinking. Connection failure of indoor/outdoor unit connecting wire

• When LED1 is lit.

1 Miswiring of remote controller wires

Under twin triple indoor unit system, 2 or more indoor units are wired together.

2 Refrigerant address for outdoor unit is wrong or not

set.

Under grouping control system, there are some units whose refrigerant addresses are 0.

3 Short-circuit of remote controller wires 4 Defective remote controller

Check indoor/outdoor unit connecting wire for connection failure.

1 Check the connection of remote controller

wires in case of twin triple indoor unit system. When 2 or more indoor units are wired in one refrigerant system, connect remote controller wires to one of those units.

2 Check the setting of refrigerant address

in case of grouping control system. If there are some units whose refrigerant addresses are 0 in one group, set one of the units to 0 using SW1 (3-6) on outdoor controller circuit board.

34 Remove remote controller wires and

check LED2 on indoor controller board.

• When LED2 is blinking, check the shortcircuit of remote controller wires.

• When LED2 is lit, connect remote controller wires again and:

if LED2 is blinking, remote controller

is defective; if LED2 is lit, connection

failure of remote controller terminal block, etc. has returned to normal.

(4) Receiver for wireless remote

controller

1 Weak batteries of wireless remote controller.

2 Contact failure of connector (CNB) on wireless

remote controller board

(Insert failure) 3 Contact failure of connector (CN90) on indoor con-

troller board (Insert failure)

4 Contact failure of connector between wireless remote

controller board and indoor controller board

1 Replace batteries of wireless remote

controller.

2–4

Check contact failure of each connector. If no problems are found on connector, replace indoor controller board. When the same trouble occurs even if indoor controller board is replaced, replace wireless remote controller board.

Note: Refer to the outdoor unit's service manual for the detail of remote controller.

OCH626A

9-5. EMERGENCY OPERATION

9-5-1. When wireless remote controller fails or its battery is exhausted

9-5-2. When wired remote controller or indoor unit microprocessor fails

When the remote controller cannot be used

When the batteries of the remote controller run out or the remote controller malfunctions, the emergency operation can be done using the emergency buttons on the grille.

DEFROST/STAND BY lamp

Operation lamp

Emergency operation switch (heating)

Emergency operation switch (cooling) Receiver Starting operation

• To operate the cooling mode, press the button

for more than 2

seconds

• To operate the heating mode, press the button

for more than 2

seconds

Note: Lighting of the Operation lamp means the start of operation.

Details of EMERGENCY MODE are as shown below.

Operation mode COOL HEAT Set temperature 24°C 24°C Fan speed High High Air flow direction Horizontal Downward 5

Stopping operation

• To stop operation, press the

button or the button .

[Emergency operation procedure]

1. When the wired remote controller or the indoor unit microcomputer has failed,but all other components work properly, if you set the switch (SWE) on the indoor controller board ON, the indoor unit will begin emergency operation. When emergency operation is activated, the indoor unit operates as follows: (1) Indoor fan is running at high speed. (2)Drain pump is working.

●Note on the wireless remote controller: When the remote controller does not function, it is possible to activate emergency operation by using the indoor unit emergency operation switch (SW1, SW2 of the wireless signal receiver board). However, if the indoor unit microcomputer has failed, it is necessary to proceed with points 2 and 3 below as in the case of the wired remote controller.

2. When you activate emergency operation of the cooling or heating, you have to set the switch(SWE) on the indoor controller board and activate emergency operation of the outdoor unit. For details on how to activate emergency operation of the outdoor unit, refer to the outdoor unit wiring diagram.

3. Before you activate emergency operation, check the following points: (1) Emergency operation cannot be activated when:

•The outdoor unit malfunctions.

•The indoor fan malfunctions.

•When it has detected the malfunction of drain pump during self-diagnosing.

(2) Emergency operation becomes continuous only by switching the power source on/off. ON/OFF on the remote controller or temperature control etc. does not function.

(3) Avoid operating for a long time when the outdoor unit begins defrosting while emergency operation of the heating is activated, because it will start to blow cold air.

(4) Emergency cooling should be limited to 10 hours maximum (The indoor unit heat exchanger may freeze).

(5) After emergency operation has been deactivated, set the switches etc. to their original positions.

(6) Movement of the vanes does not work in emergency operation, therefore you have to slowly set them manually to the appropriate positions.

OCH626A

9-6. HOW TO CHECK THE PARTS

PLA-RP35EA.UK PLA-RP50EA.UK PLA-RP60EA.UK PLA-RP71EA.UK PLA-RP100EA.UK PLA-RP125EA.UK PLA-RP140EA.UK

Drain float switch (FS)

Moving part

Measure the resistance between the terminals with a tester.

State of moving part

Abnormal

DOWN Other than open

Normal

Open

Short Other than short

Switch Magnet

Moving Part

Orange

Red

White

Blue

Yellow

Measure the resistance between the terminals with a tester. (At the ambient temperature 20 to 30°C)

i-see Sensor motor (Option)

i-see Sensor (Option)

Room temperature thermistor (TH1)

Condenser/evaporator temperature thermistor (TH5)

Measure the resistance with a tester. (Parts temperature 10 to 30°C)

Pipe temperature thermistor/liquid (TH2)

Check method and criterion

Parts name

Normal

4.3 to 9.6 k"

Abnormal

Opened or short-circuited

Measure the resistance between the terminals with a tester. (At the ambient temperature 20 to 30°C)

Vane motor (MV)

Drain pump (DP)

NormalConnector Abnormal

300 " Open or short

Orange

Red

White

Red–Yellow (5–3, 0–8, 5–3, )–8) Red–Blue (5–1, 0–6, 5–1, )–6) Red–Orange (5–4, 0–9, 5–4, )–9) Red–White (5–2, 0–7, 5–2, )–7)

Blue

Yellow

1 2 3

Red Purple Black

1 Check if the drain float switch works properly. 2 Check if the drain pump works and drains water properly in cooling operation. 3 If no water drains, confirm that the check code P5 will not be displayed 10 minutes after the

operation starts. Note: The drain pump for this model is driven by the internal DC motor of controller board, so it is not possible to measure the resistance between the terminals.

Normal Red–Black: Input 13 V DC → The motor starts to rotate. Purple–Black: Abnormal (check code P5) if it outputs 0–13 V square wave (5 pulses/rotation), and the number of rotation is not normal.

Refer to “9-6-1. Thermister”.

1 2 3 4

1 2 3

Black

Turn the power ON while the i-see Sensor connector is connected to the CN4Z on indoor controller board. A communication between the indoor controller board and i-see Sensor board is made to detect the connection.

Normal: When the operation starts, the motor for i-see Sensor is driven to rotate the i-see Sensor. Abnormal: The motor for i-see Sensor is not driven when the operation starts.

Note: The voltage between the terminals cannot be measured accurately since it is pulse output.

250 "

AbnormalNormal

Red–Yellow Red–Blue Red–Orange

Open or short

Red–White

OCH626A

-20 -10 0 10 20 30 40 50

< Thermistor for lower temperature >

Temperature (:)

Resistance (k")

Room temperature thermistor (TH1) Pipe temperature thermistor/liquid (TH2) Condenser/evaporator temperature thermistor (TH5)

Thermistor R0=15k" ± 3% Fixed number of B=3480 ± 2%

Rt=15exp { 3480( ) }

0: 15 k" 10: 9.6 k" 20: 6.3 k" 25: 5.4 k" 30: 4.3 k" 40: 3.0 k"

Thermistor for lower temperature

273+t

273

9-6-1. Thermistor

9-6-2. DC Fan motor (FAN MOTOR/INDOOR CONTROLLER BOARD)

Notes

· High voltage is applied to the connector (CNMF) for the fan motor. Pay attention to the service.

· Do not pull out the connector (CNMF) for the motor with the power supply on. (It causes trouble of the indoor controller circuit

board and fan motor.)

Self check Symptom : The indoor fan cannot turn around.

Power supply check (Without fan motor connected) Remove the fan motor (Remove the fan motor connector CNMF) and measure the voltage in the indoor controller circuit

board.

TEST POINT

1 : VDC (between 1 (+) and 4 (-) of the fan motor connector): VDC 280 V DC

TEST POINT 2 : VCC (between 5 (+) and 4 (-) of the fan motor connector): VCC 15 V DC

Wiring recovery

Replace indoor controller board.

Replace defective fan motor.

Is the voltage normal?

Yes

Check method of DC fan motor (fan motor / indoor controller circuit board)

Is there contact failure? (loose connector, insert failure)

Wiring contact check The contact of fan motor connect (CNMF)

Note: If the indoor fan does not operate after replacing the

indoor controller board, also replace the fan motor.

Note: If the indoor fan does not operate after replacing the

fan motor, also replace the indoor controller board.

OCH626A

9-7. TEST POINT DIAGRAM

Indoor controller board

PLA-RP35EA.UK PLA-RP50EA.UK PLA-RP60EA.UK PLA-RP71EA.UK

PLA-RP100EA.UK PLA-RP125EA.UK PLA-RP140EA.UK

CN90

Connect to the wireless remote controller board (CNB)

LED2

Power supply

(Wired remote controller)

CN44

Pipe temperature thermistor

–

: Liquid (TH2)

–

: Condenser/Evaporator (TH5)

CN20

Room temperature thermistor

(TH1)

CN4F

Drain float switch (FS)

CN105

CN4Z

i-see Sensor (Sensor)

Vsp

Voltage between pins of C626 0 V DC (FAN stop) 1–6.5 V DC (FAN operation)

(Same as 6(+)–4(−) of CNMF)

CNMF

Fan motor (MF)

–

: 310–340 V DC

–

: 15 V DC

CN5Y

i-see Sensor motor (MT)

12 V pulse output

CNV

Vane motor (MV)

12 V pulse output

J41, J42

Jumper wire (Pair No. setting with wireless remote controller)

SW2

Capacity setting

LED3

Communication (Indoor-outdoor)

SWE

Jumper switch (Emergency operation)

CN32

Remote switch

CN41

HA terminal-A

CN2L

Lossnay

CN01

Connect to the terminal block (TB4) (Indoor/outdoor connecting line)

– : 220–240 V AC

FUSE

(6.3A/250 V)

LED1

Power supply (I.B)

CN3C

Connect to the terminal block (TB4) (Indoor/outdoor connecting line) 0–24 V DC (Communication)

CN51

Centrally control

– : Control signal

13 V DC pulse input (

: +)

– : Operation indicator

13 V DC (

: +)

–

Malfunction indicator

13 V DC ( : +)

CNP

Drain pump (DP)

–

: 13 V DC

TB5

Connect to wired remote controller

10.4-14.6 V DC

SW1

Model selection

CN4G

Connect to the auto grille controller board (CN4G)

–

: 13 V DC ( : +)

– , –

: communication line

0-5 V DC ( , : +)

OCH626A

SW1

Setting by the DIP switch and jumper wire

Functions

Jumper wire

Model settings

Capacity settings

Pair number setting with wireless remote controller

Remarks

SW2

J41 J42

0 1 2

3 to 9

Wireless remote controller setting

Control PCB setting

J41 J42

<Initial setting> Wireless remote controller: 0 Control PCB: (for both J41 and J42) 4 pair number settings are supported. The pair number settings of the wireless remote controller and indoor control PCB (J41/J42) are given in the table on the left. (' ' in the table indicates the jumper wire is dis connected.)

Jumper wire ( : Short : Open)

The black square (■) indicates a switch position

MODELS

MODEL

SETTING

PLA-RP35EA

ON OFF

1 2 3 4 5

SETTING

PLA-RP•EA

ON OFF

1 2 3 4 5

PLA-RP50EA

ON OFF

1 2 3 4 5

PLA-RP100EA

ON OFF

PLA-RP60EA

ON OFF

1 2 3 4 5

PLA-RP125EA

ON OFF

1 2 3 4 5

PLA-RP71EA

ON OFF

1 2 3 4 5

PLA-RP140EA

ON OFF

1 2 3 4 5

OFF

1 2 3 4 5

9-8. FUNCTIONS OF DIP SWITCH AND JUMPER WIRE

Each function is controlled by the DIP switch and the jumper wire on the indoor controller board.

OCH626A

SPECIAL FUNCTION

10-1. OPERATION (AUTOMATIC FILTER ELEVATION GRILLE: PLP-6EAJ)

UP/DOWN Machine 1

UP/DOWN Machine 2

String 1b

String 1a

String 2a

String 2b

Fig.1

Detection switch

Air intake grille

(1) Normal operation

1 UP/DOWN Air intake grille is raised/lowered by commands of UP and DOWN. Air intake grille does not move under the state of no-load detection or obstacle detection. Air intake grille stops automatically at the set lowering distance from the ceiling level. 2 STOP It stops in the cases below :

• When it reaches the set lowering distance from

the ceiling level. It automatically stops after a predetermined period

of lowering.

• When it is stored in the panel.

The air intake grille is judged to be stored in the panel when the storage detection switch is pressed for 5 seconds continuously.

• When receiving commands of STOP, DOWN while moving up or UP while moving down.

The STOP button is only available on the automatic filter elevation panel remote controller.

When the wired remote controller is used, there will be a slight delay in stopping due to transmission speed.

• When both string 1b and 2b are not loaded.

Only the string b in each UP/DOWN Machine has a tension detection switch.

(2) Special operation

1 Re-storage operation Case : Obstruction of the raising air intake grille before storage or malfunction of storage detection switch Re-storage operation will be performed when the intake grille has been raised the set distance but the storage detection switch is not engaged.

In this case, the operation below will be repeated up to 4 times.

10 cm down 30 cm up ···· 10 cm down 30 cm up 2 No-load detection Case : UP/DOWN commands with no grille suspended.

When both string 1b and string 2b are not loaded, the strings will not move.

3 Obstacle detection Case : Making contact with something while lowering. Should the loads on the string 1b and string 2b be removed due to the air intake grille making contact with something while lowering, the lowering operation will stop. The air intake grille will then be raised 10 cm and stop again.

[

EMERGENCY OPERATION

]

1. If the wireless remote controller for ELEVATION PANEL is faulty or lost, operation will be possible

using the emergency up/down switch at the wireless signal receiver or wired remote controller. ▪ For the operation using the emergency up/down switch at the wireless signal receiver, refer to SW1 and SW2 on the [LEGEND] in the next page.

2. When machine for ELEVATION PANEL breaks down, a intake grille is fixed for a while, and

the operation of the unit can be done. ▪ Refer to installation manual with the grille for the details such as an installation method.

OCH626A

3333

10-2. ELECTRICAL CIRCUIT (Controller board and wiring diagram (Panel))

Turn OFF : No power supply Blink : Storage detection switch ON (short) One blink : Storage detection switch OFF (open) Two blinks : Tension detection switch OFF (open)

Check item Check point Normal Remarks Up/down controller

P.C. board supply voltage

CN4A (between 1–2)

11–14 V AC

Up/down machine supply voltage

CN3B

10–13.5 V DC

Check when instructing up/down with LED blinking once.

Check item Check point Normal Check contents Storage detection

switch

CN2E open or short Check if it is short when pressing push switch.

Tension detection switch

CN2F, CN2G open or short Check if it is short when string b is tensioned. Motor CN3B, CN3C 5–20 " Check if it is not open or short. Entwining strings Pull string

Retention: about 2 kgf

Check if string is drawn out by pulling with 4 kgf.

Blink : Connecting

CN3C

(between 1–2)

[EMERGENCY OPERATION]

1. If the wireless remote controller for ELEVATION PANEL is faulty or lost, operation will be possible using the emergency up/down switch at the wireless signal receiver or wired remote controller. ▪ For the operation using the emergency up/down switch at the wireless signal

receiver, refer to SW1 and SW2 on the left [LEGEND].

2. When machine for ELEVATION PANEL breaks down, a intake grille is fixed for a while, and the operation of the unit can be done.

▪ Refer to installation manual with the grille for the details such as an installation

method.

123456

ON OFF

<*2>SW2 on U.B

LOWERING DISTANCE

SET UP

2.0m

2.4m

1.2m

1.6m

(Initial

setting)

123456

ON OFF

123456

ON OFF

123456

ON OFF

LOWERING DISTANCE

SET UP

3.6m

4.0m

2.8m

3.2m

123456

ON OFF

123456

ON OFF

123456

ON OFF

123456

ON OFF

[

Note

]

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

2. The black square ( ) indicates a switch position.

Note: The actual lowering distance might be different from the distance in the table 2 since it can also be set using the wired remote controller.

SYMBOL NAME U.B

ELEVATION PANEL CONTROLLER BOARD

LED4

LED2

LED GREEN (COMMUNICATION WITH INDOOR UNIT)

LED ORANGE (INTAKE GRILLE CONDITION (See table *1))

U.K 1 ELEVATION MACHINE

I.B INDOOR UNIT CONTROLLER BOARD

LS1

DETECTION SWITCH (INTAKE GRILLE STORAGE)

R.B

WIRED REMOTE CONTROLLER

MOTOR (ELEVATION)

LS21 DETECTION SWITCH (STRING TENSION)

W.B PCB OF SIGNAL RECEIVER

LED1

LED GREEN (OPERATION INDICATION)

LED2

LED ORANGE (PREPARATION FOR HEATING)

SW1

EMERGENCY HEATING (LONG PRESS FOR OVER 2SEC.)

SW2

EMERGENCY COOLING (LONG PRESS FOR OVER 2SEC.)

INTAKE GRILLE/DOWN (SHORT PRESS)

INTAKE GRILLE/UP (SHORT PRESS)

BUZZER

RU RECEIVING UNIT

[

LEGEND

]

U.K 1

R.B

I.B

U.B

CN3B

(WH)

LED4

LED2

TB5

TB6

2 1

W.B

LED1

SW2

LED2

SW1

CNB

(WH)

CN90

(WH)

U.K 1

(GNYE)

2 1

CN2G

(BK)

LS21

2 1

CN2E (RD)

LS1

CN2F

(BK)

LS21

Grille side Indoor unit

side

CN3C

(WH)

123456

SW2

ON OFF

Lowering distance setting

<*1> LED2 on U.B

2-TIME BLINKING

1-TIME BLINKING

LIGHTING

LED2

INTAKE GRILLE HOUSED AND STRING TENSIONED INTAKE GRILLE NOT HOUSED AND STRING TENSIONED STRING NOT TENSIONED

INTAKE GRILLE CONDITION

CN4G

(BK)

CN4G

(BU)

SW2

LED2

LED4

10-2-1 DIP SW

10-2-2. Check point of trouble

OCH626A

Problem Possible Reason Corrective Action

Intake grille does not function with operation of the remote controller.

Intake grille cannot be placed in the correct position.

Intake grille stops lowering in mid flow. (Intake grille would not lower any further.)

Noises are made during up/down operation. (While intake grille is moving up/down.)

Noises are made while placing the intake grille in.

Intake grille repeats rising and lowering several times while being placed in the correct position.

Intake grille leans toward one side during the up/down operation.

Air-conditioner is running.

Power failure.

Batteries are not inserted into the wireless remote controller. Or battery power is running low.

There is something on the intake grille. Or something is stuck in the intake grille.

There is something on the intake grille.

Filter is not properly installed.

Intake grille is not hung with all 4 hooks.

Because the intake grille has finished lowering to the auto-stop position.

This is the noise made when the string is winded and unwound.

This is the operational noise for placing the intake grille in securely.

The speeds of winding each string is slightly different.

Stop running the air-conditioner and try again. After recovering from power failure, try again.

Install or replace the battery.

This is normal.

This is normal. Note: If you want to change the setting for the lowering distance, contact your dealer.

Lower the intake grille again and hang the hook on the intake grille.

Lower the intake grille again and check whether the filter is installed in the correct position.

Remove the objects or obstacles from the intake grille.

This is the operation for placing the intake grille in securely.

Remove the objects or obstacles from the intake grille. Or, remove the stuck object.

10-3. TROUBLESHOOTING

• Check the following points.

OCH626A

Operation pattern

OC-1

OC-2

IC-1

IC-2

3(2)

Main unit

Sub unit

Refrigerant address "01"

Refrigerant address "00"

Fig. 1

1 [Back-up function only]··· Request code number "312"

[Rotation function] & [Back-up function]··· Request code number "313–318"

(Ex:When the request code number is "313", each unit operates alternately in daily cycle.)

Error occurs on main unit.

Start operation

Run

Abnormal condition

Stop

Run

Main

unit IC-1

Sub unit IC-2

Error occurs on main unit.

Start operation

1–28 days 1–28 days

Run

Abnormal condition

Stop

Run

Stop Run

Main

unit IC-1

Sub unit IC-2

Main Sub

Main Sub Main Sub Main Sub

OC : Outdoor unit IC : Indoor unit RC : Wired remote controller

Note:

· When the unit is restarted to operate after turning off the power or OFF operation, the unit which was operating will start operation.

· To operate the main unit, refer to "10-4-2. How to set rotation function (Back-up function, 2nd stage cut-in function)" and set the request code No. which is not the same as the current one, then set again the former request code No.

(2) 2nd stage cut-in function Outline of functions

· When the 1st unit cannot supply with sufficient capacity for exceptionally high-demand conditions and the actual room tem-

perature reaches set point (*), the 2nd unit starts operation in conjunction with the 1st unit.

Once the actual room temperature goes down to 4°C below set point (*), the 2nd unit stops operation automatically.

(* set point = set temperature by R/C (remote controller) + 4, 6, 8°C (selectable) )

· Number of operating units is determined according to the room temperature and set point.

· When room temperature reaches higher than set point, standby unit starts. (2 units operation)

· When room temperature falls below set point −4°C, standby unit stops. (1 unit operation)

10-4. ROTATION FUNCTION (AND BACK-UP FUNCTION, 2ND STAGE CUT-IN FUNCTION)

10-4-1. Operation

(1) Rotation function (and Back-up function)

• Outline of functions

· Main and sub unit operate alternately according to the interval of rotation setting. Note: Main and sub unit should be set by refrigerant address. (Outdoor DIP switch setting) Refrigerant address "00" Main unit Refrigerant address "01" Sub unit

· When error occurs to one unit, another unit will start operation. (Back-up function)

• System constraint

· This function is available only by the grouping control system (INDOOR UNIT : OUTDOOR UNIT=1:1) of 2 refrigerant groups. (Refer to Fig. 1)

· Main indoor unit should be connected for wired remote controller and the transmission line (TB5) for main and sub unit should also be connected. (Refer to Fig. 1)

(This function cannot be set by wireless remote controller.)

· Set refrigerant address of each unit. (Dip switch on the outdoor unit ··· Refrigerant address 00/01)

OCH626A

10-4-2. How to set rotation function (Back-up function, 2nd stage cut-in function)

You can set these functions by wired remote controller. (Maintenance monitor)

• System constraint

· This function is available only in cooling mode.

Ex.) Set temp. by R/C = 20:

Set point = 26: When request code number is “323”.

26: 2nd unit Cut-in

22: 2nd unit Cut-out

20:

Both main and sub unit should be set in same setting. Every time replacing indoor controller board for servicing, the function should be set again.

NOTICE

[2nd stage cut-in function]··· Request code number "322–324"

Start operation Sub unit start operation

Room temp. ] Set point

Sub unit stop

Run

Stop StopRun

Main

unit IC-1

Sub unit IC-2

Room temp. < Set point −4:

(1) Request Code List

Rotation setting

Initial

setting

Initial

setting

2nd unit cut-in setting

Setting contents

Setting No.

(Request code)

No.7

(316)

No.8

(317)

No.9

(318)

Rotation and Back-up OFF (Normal group control operation)

Monitoring the request code of current setting

Setting No.

(Request code)

No.1

(310)

No.2

(311)

No.3

(312)

No.4

(313)

No.5

(314)

No.6

(315)

Cut-in function OFF

Monitoring the request code of current setting

Setting contents

Rotation ON (Alternating interval = 28days) and back-up function

Rotation ON (Alternating interval = 14days) and back-up function

Rotation ON (Alternating interval = 1day) and back-up function

Back-up function only

No.5

(324)

Rotation ON (Alternating interval = 7days) and back-up function

Rotation ON (Alternating interval = 5days) and back-up function

Rotation ON (Alternating interval = 3days) and back-up function

No.1

(320)

No.2

(321)

No.3

(322)

No.4

(323)

Cut-in function ON(Set point = Set temp.+ 4°C (7.2°F)

Cut-in function ON(Set point = Set temp.+ 6°C (10.8°F)

Cut-in function ON(Set point = Set temp.+ 8°C (14.4°F)

OCH626A

3737

Press the button.

Select "Service" with the [Cursor] buttons (

and

) or the [Page] buttons (

and

), and press the button.

PAR-3xMAA ("x" represents 0 or later)

F1 F2 F3 F4

Main menuMain 3/3

Main display:

Cursor Page

Maintenance Initial setting Service

Service menu

Select:

Cursor

Enter maintenance password

9999

Service menu 1/2

Main menu:

Cursor

Test run Input maintenance info. Function setting Check Self check

Check menu

Service menu:

Cursor

Error history Refrigerant volume check Refrigerant leak check Smooth maintenance Request code

Request code

Request:

Cursor

Ref.address 0 Request code 004

Enter the current maintenance password (4 numerical digits).

• Move cursor to the digit you wat to change with the

button.

• Set each number (0 through 9) with the

button.

(Note: The initial maintenance password is "9999".)

Then, press the button.

Select "Check" with the

F1orF2

button, and press the button.

Select "Request code" with the

button, and press the button.

Set the Refrigerant address and Request code.

• Select the item to be changed with the

F1orF2

button.

• Select the required setting with the

button.

Press the

button to set the Refrigerant address "0".

Press the

button to set the desired request code No.

• Rotation & Back up operation: Enter one request code from 311–318.

• 2nd stage cut-in operation: Enter one request code from 321–324.

Press the button. Data will be collected and displayed.

Press the

button to set the Refrigerant address "1".

Set above

9–0

To return to the Main menu, press the button.

(2) Rotation and back up operation

OCH626A

DISASSEMBLY PROCEDURE

PLA-RP35EA.UK PLA-RP50EA.UK PLA-RP60EA.UK PLA-RP71EA.UK

PLA-RP100EA.UK PLA-RP125EA.UK PLA-RP140EA.UK

DISASSEMBLY PROCEDURE

OPERATING PROCEDURE

PHOTOS & ILLUSTRATIONS

1. Removing the filter

(1) Slide the knob of air intake grille toward the arrow to

open the air intake grille. (See Figure 1)

(2)

Pull down the lever of the air intake grille to remove the filter. (See Figure 2)

Figure 1

Be careful when removing heavy parts.

Knob

Figure 2

Electrical box cover

fixing screws

Photo 1

2. Removing the air intake grille

(1) Slide the knob of air intake grille toward the arrow to

open the air intake grille. (See Figure 1)

(2) Remove the hook of drop prevention strap from the

panel.

(3) Remove the air intake grille.

Hook of drop

prevention strap

Photo 2

Slide

Intake grille

Filter

Grille

Air intake grille

3. Removing the electrical box cover

(1) Remove the air intake grille and the filter. (Refer to

procedure 2)

(2) Loosen the 2 electrical box cover fixing screws

(M4×10) approximately 2 to 3 mm. (See Photo 1)

(3) Slide the electrical box cover toward the arrow to

remove. (See Photo 2)

OCH626A

3939

OPERATING PROCEDURE

PHOTOS

Indoor controller

board

Electrical box

Thermistor (TH1)

CN20

Photo 3

Photo 4

4. Removing the room temperature thermistor (TH1)

(1) Remove the electrical box cover. (See Photo 1 and 2)

(2) Disconnect the connector CN20 (Red) from the indoor

controller board.

(3) Remove the room temperature thermistor with its

holder. (See Photo 3)

Electrical box

fixing screw

(M5×10)

Electrical box

fixing screw

(M5×10)

Thermistor holder

Thermistor (TH1)

5. Removing the indoor controller board (I.B)

(1) Remove the electrical box cover. (See Photo 1 and 2) (2) Disconnect the connectors:

CNMF (White) for fan motor

CNV (White) for vane motor CN5Y (White) for motor for i-see Sensor (Option) CN4Z (White) for sensor for i-see Sensor (Option) CN90 (White) for signal receiver (Option) CNP (White) for drain pump CN4F (White) for float switch CN44 (White) for thermistor (TH2/TH5)

CN01 (Black) for Indoor/Outdoor connecting line

CN3C (Blue) for Indoor/Outdoor transmission

Disconnect the connectors for optional parts, if any.

(3) For the unit controlled with the wireless remote control-

ler, disconnect the lead wire connected to TB5 on the indoor controller board.

TB5: Remote controller transmission connecting wire

(4) Remove the indoor controller board (3 holders/4 Hooks).

(See Photo 4)

Holders

Hooks

OCH626A

OPERATING PROCEDURE

PHOTOS & ILLUSTRATIONS

Be careful when removing heavy parts.

6. Removing the electrical box

(1) Remove the electrical box cover (See Photo 1 and 2)

and the connectors (Refer to procedure 5).

(2) Remove the electrical box fixing screws (M5×10: 2

screw). (See Photo 3)

• Terminal block for earth and reactor

• Indoor controller board

• Thermistor(TH) (3)

Remove the electrical box (2 hooks).

8. Removing the fan motor (MF)

(1) Remove the turbo fan. (See Photo 6 and refer to proce-

dure 7)

(2) Remove the lead cover (tapping screw 4×10: 2 screws).

(See Photo 9) (3) Loosen the 2 clamps. (4) Remove the 3 washer nuts (M5) . (5) Remove the fan motor. (6) Remove the 3 rubber mounts.

Photo 5

Photo 8

Photo 6

Photo 7

Photo 9

Electrical box

Bell mouth fixing screws

Bell mouth

Turbo fan

Clamp (2 points)

Lead cover

Coil plate

Lead cover

xing screws

Fan motor

Figure 3 Cross section diagram

Nut washer

Fan motor

7. Removing the turbo fan

(1) Remove the electrical box. (See Photo 3 and refer to

procedure 6) (2) Remove the bell mouth (tapping screw 4×10: 2 screws).

(See Photo 5) (3) Remove the nut and washer (1 nut). (See Photo 6 and 7) (4) Remove the turbo fan.

Nut and washer

Rubber mount

Note: When re-attaching the motor mount, make sure that the thicker

end faces the motor shaft.

Turn this way to tighten.

Turn this way to loosen.

(The same directions as the fan rotation.)

Nuts and washers Rubber mounts

Rubber mount

Note: When re-attaching the motor mount, make sure that the

thicker end faces the motor shaft.

Hooks

OCH626A

OPERATING PROCEDURE

PHOTOS & ILLUSTRATIONS

Photo 10

Photo 11

Corner panel

①

Corner panel

Close-up

Screw

Grille

Photo 12

Drain pan

Figure 4

Drain pan fixing screws

9. Removing the panel

(1) Remove the electrical box fixing cover. (See Photo 1) (2) Disconnect the connector for vane motor (CNV: White).

(Refer to procedure 5)

(3) Loosen the 4 corner panel fixing screws (tapping screw

4×16). (See Figure 4)

(4) Slide the corner panel to the direction of the arrow 1,

and remove the corner panel. (See Figure 4)

(5) Remove the 4 installation screws (M5×28). (See Photo

10)

(6) Release the 2 temporary hanging hooks to remove the

grille

. (See Photo 11)

Installation

screw

Temporary hanging hook

10. Removing the drain pan

(1) Remove the electrical box. (See photo 3 and refer to

procedure 6)

(2) Remove the bell mouth (tapping screw 4×10 : 2 screws).

(See Photo 5)

(3) Remove the drain pan (screw M5×10: 4 screws).

OCH626A

11. Removing the pipe temperature/liquid thermistor (TH2) and condenser/evaporator temperature thermistor (TH5)

(1) Remove the drain pan (Refer to procedure 10) and loosen

the 2 clamps of the coil plate. (See Photo 9)

(2) Remove the coil plate (tapping screw 4×10: 2 screws). (3) Disconnect the pipe temperature/liquid thermistor (TH2) and condenser/evaporator temperature thermistor (TH5)

from the holder.

OPERATING PROCEDURE

PHOTOS & ILLUSTRATIONS

Photo 13

Condenser/evaporator temperature thermistor (TH5)

Pipe temperature/liquid thermistor (TH2)

12. Removing the drain pump (DP)

(1) Remove the drain pan. (Refer to procedure 10) (2) Cut the hose band and remove the hose. (3) Loosen the clamp of the drain pump. (4) Remove the drain pump (tapping screw 4×10: 2 screws/2

hooks).

(5) Cut the drain pump base and lead wire fixing band. (See

Figure 5)

(6) Remove the lead wire of the drain pump from the clamp of

the drain pump base. (See Figure 5)

(7) Remove the drain pump (tapping screw: 3 screws). (See

Figure 6)

Photo 14

Drain pump

Float switch

Clamp

Hose band

Float switch fixing screw

Drain pump base fixing screws

Figure 5

Figure 6

Drain pump base and lead wire fixing band

Clamp of the drain pump base

Tapping screws

OCH626A

Photo 15

OPERATING PROCEDURE

PHOTOS

Coil support fixing screw

Photo 16

Coil support

Heat exchanger fixing screws

Piping cover

Coil plate

Heat exchanger

Coil support

fixing screws

Coil supports

Heat exchanger fixing screws

Coil plate

Heat exchanger

Piping cover

Photo 17

Do not hold this floating part when lifting; Doing so will cause malfunction.

Float switch

Float switch base

Float switch base and lead wire fixing band

U shaped portion of the float switch base

14. Removing the heat exchanger

(1) Remove the drain pan. (Refer to procedure 10) (2) Remove the piping cover (tapping screw 4×10: 3

screws).

(3) Remove the coil plate (tapping screw 4×10: 2

screws).

(4) Remove the heat exchanger fixing screws (tapping

screw 4×10: 2 screws).

(5) Remove the coil support (tapping screw 4×10: 1

screw each)

■

RP35–60: 1 coil support (See photo 16)

■

RP71–140: 3 coil supports (See photo 17)

(6) Remove the heat exchanger.

13. Removing the float switch (FS)

(1) Remove the drain pan. (Refer to procedure 10) (2) Loosen the clamp of the drain pump. (See Photo 14) (3) Remove the float switch (tapping screw 4×10: 1 screw/1

hook). (See Photo 14)

(4) Remove the float switch base and the lead wire fixing band.

(See Photo 15)

(5) Remove the lead wire from the U shaped portion of the

float switch base. (See Photo 15)

(6) Slide the float switch towards the arrow to remove from the

float switch base.

OCH626A

HEAD OFFICE : TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN

Specifications are subject to change without notice.

Mitsubishi PLA-RP125EA, PLA-RP60EA, PLA-RP140EA, PLP-6EA, PLP-6EAE Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual