Mitsubishi PCA-RP71KAQ, PCA-RP50KAQR, PCA-RP100KAQ, PCA-RP71KAQR1, PCA-RP140KAQ Service Manual

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Page 1

SERVICE MANUAL

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

No. OCH491

REVISED EDITION-B

INDOOR UNIT

CONTENTS

1. TECHNICAL CHANGES

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

2. REFERENCE MANUAL

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

3. SAFETY PRECAUTION

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

4. PART NAMES AND FUNCTIONS

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

5. SPECIFICATIONS

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

6. NOISE CRITERION CURVES

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

7. OUTLINES AND DIMENSIONS

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

8. WIRING DIAGRAM

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

9. REFRIGERANT SYSTEM DIAGRAM

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

10. TROUBLESHOOTING

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

11. SPECIAL FUNCTION

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

12. DISASSEMBLY PROCEDURE

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

[Service Ref.]

PCA-RP35KAQ PCA-RP50KAQ PCA-RP50KAQR1 PCA-RP60KAQ PCA-RP60KAQR1 PCA-RP71KAQ PCA-RP71KAQR1 PCA-RP100KAQ PCA-RP125KAQ PCA-RP140KAQ

October 2012

NOTE:

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

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

PARTS CATALOG (OCB491)

Model name indication

WIRED REMOTE

CONTROLLER

(Option)

WIRELESS REMOTE

CONTROLLER

(Option)

ON/OFF TEMP

• Please void OCH491 REVISED EDITION-A.

Revision:

• PCA-RP35KAQ and PCA-RP50/60/71KAQR1 have been added in REVISED EDITION-B.

• Some descriptions have been modified.

ON/OFF

TEMP.

Indoor unit [Model names]

PCA-RP35KAQ

PCA-RP50KAQ

PCA-RP60KAQ

PCA-RP71KAQ

PCA-RP100KAQ

PCA-RP125KAQ

PCA-RP140KAQ

Page 2

2-1. OUTDOOR UNIT’S SERVICE MANUAL

2-2. TECHNICAL DATA BOOK

Service Ref. Service Manual No. SUZ-KA50/60/71VA3.TH-A OCH511 / OCB511

PUHZ-RP50/60/71VHA4 PUHZ-RP100/125/140VKA PUHZ-RP100/125/140/200/250YKA PUHZ-RP200YKAR1

OCH451 / OCB451

PUHZ-ZRP35/50VKA PUHZ-ZRP60/71VHA PUHZ-ZRP100/125/140VKA PUHZ-ZRP100/125/140YKA

OCH527 / OCB527

PU(H)-P71/100VHAR3.UK PU(H)-P71/100/125/140YHAR3.UK

OC379

PUHZ-P100/125/140VHA3R2.UK PUHZ-P100/125/140YHAR1.UK

OCH415 / OCB415

PUHZ-P200/250YHA3R2 OCH424 / OCB424 SUZ-KA50/60/71VA2.TH OCH472 / OCB472 SUZ-KA50/60/71VA2.TH-A OCH473 / OCB473 SUZ-KA25/35/50/60/71VA3.TH OCH530 / OCB530

Series (Outdoor unit) Manual No. SUZ-KA

•

VA OCS03

PUHZ-RP

•

HA4

PUHZ-RP

•

OCS16

PUHZ-P

•

VHA3

PUHZ-P

•

YHAR3

OCS17

PUZ-KA

•

VA3 OCS22

Note: The phrase "Wired remote controller" in this service manual refers to the PAR-21MAA. If you need any information for the other remote controller, please refer to either the instaollation manual or initilal setting manual which are in these boxes.

REFERENCE MANUAL

TECHNICAL CHANGES

PCA-RP50KAQ PCA-RP50KAQR1 PCA-RP60KAQ

PCA-RP60KAQR1

PCA-RP71KAQ PCA-RP71KAQR1

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

OCH491B

Page 3

SAFETY PRECAUTION

Cautions for units utilising refrigerant R410A

3-2. CAUTIONS RELATED TO NEW REFRIGERANT

Use new refrigerant pipes.

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.

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

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

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

· For RP100, 125 and 140, be sure to perform replace ment operation before test run.

· 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.

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.

3-1. ALWAYS OBSERVE FOR SAFETY

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

OCH491B

Page 4

[3] Service tools

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

Gravimeter

Unit

4-1. INDOOR UNIT

PART NAMES AND FUNCTIONS

Air outlet

Louver

Vane

Air intake

Filter (Inside of Air intake)

No. Tool name Specifications

Gauge manifold · Only for R410A

· Use the existing fitting

specifications

. (UNF1/2)

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

Charge hose · Only for R410A

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

Electronic scale

—

Gas leak detector

· Use the detector for R134a, R407C or R410A.

Adaptor for reverse flow check

· Attach on vacuum pump.

Refrigerant charge base

—

Refrigerant cylinder · Only for R410A · Top of cylinder (Pink)

· Cylinder with syphon

Refrigerant recovery equipment

—

[1] Cautions for service

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

Be sure to use a filter drier for new refrigerant.

[2] Additional refrigerant charge

When charging directly from cylinder

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

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

OCH491B

Page 5

4-2. WIRELESS REMOTE CONTROLLER (OPTION)

ON/OFF TEMP

FAN

VANE

TEST RUN

AUTO STOP

AUTO START

min

LOUVER

MODE

CHECK

RESETSET CLOCK

MODEL

SELECT

NOT AV AILABLE

SWING

CHECK

FAN

TEST

RUN

°F °C

AMPMSTOP

START

AMPM

VANE CONTROL button

Changes the air flow direction.

CLOCK button RESET button

SET button

ON/OFF button

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

LOUVER button

Changes left / right airflow direction.

MODE SELECT button

Switches the operation mode between COOLING/DRY/FAN/HEATING and AUTO mode.

CHECK-TEST RUN button

Performs an inspection check or test operation. Do not use it for normal operation.

FAN SPEED SELECT button

Changes the fan speed.

TIMER display

Displays when in timer operation or when setting timer.

button

Sets any desired room temperature.

CLOCK display

Displays the current time.

“” “ ” display

Displays the order of timer operation.

“ ” “ ” display

Displays whether timer is on or off.

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

"h" and "min" buttons

Temperature setting display

Indicates the desired temperature setting which is set.

display

Displays selectedfan speed.

display

The vertical direction of airflow is indicated.

display

Blinks when model is selected.

display

Lights up while the signal is transmitted to the indoor unit when the button is pressed.

display

Indicate that the unit is being checked or test-run.

OPERATION MODE display

OPERATION MODE display Indicates which operation mode is in effect.

TIMER CONTROL buttons

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

MODEL SELECT

CHECK

TEST RUN

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

OCH491B

Page 6

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

Fri

Mode Temp. Fan

Room

Cool Auto

Set temp.

Fri

Cool

Mode Temp. Fan

AutoSet temp.

181716

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

Indicates the vane setting.

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.)

* 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

78910 10789

• 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

4-3. WIRED REMOTE CONTROLLER (OPTION) <PAR-30MAA/PAR-31MAA>

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

OCH491B

Page 7

Setting and display items Setting details

Vane · Louver · Vent. (Lossnay)

Use to set the vane angle.

• Select a desired vane setting from ﬁ ve 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. * Clock setting is required.

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 ﬁ lter status.

• The ﬁ lter sign can be reset.

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

• Error 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 eight operation patterns can be set for each day. * Clock setting is required. * 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 speciﬁ 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 four 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% or 50 to 90% in 10% increments. * Clock setting is required.

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. * Clock setting is required.

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 ﬁ xed position.

Initial setting Main/Sub When connecting two 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 default 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 factory 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 cord: 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 Take the following steps to change the maintenance password. Remote controller check

When the remote controller does not work properly, use the remote controller checking function to troubleshoot the problem.

Main menu list

OCH491B

Page 8

°F°C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

ON OFF

Hr AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

Display Section

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

Identifies the current operation

Shows the operating mode, etc. *Multilanguage display is available.

“Centrally Controlled” indicator

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

“Timer is Off” indicator

Indicates that the timer is off.

Temperature Setting

Shows the target temperature.

Day-of-Week

Shows the current day of the week.

Time/Timer Display

Shows the current time, unless the simple or Auto Off timer is set. If the simple or Auto Off timer is set, the time to be switched off is shown.

“Sensor” indication

Displays when the remote controller sensor is used.

“Locked” indicator

Indicates that remote controller buttons have been locked.

“Clean The Filter” indicator

To be displayed on when it is time to clean the filter.

Timer indicators

The indicator comes on if the corresponding timer is set.

Up/Down Air Direction indicator

The indicator shows the direction of the outcoming airflow.

“One Hour Only” indicator

Room Temperature display

Shows the room temperature. The room temperature display range is 8-39°C. The display blinks if the temperature is less than 8°C or 39°C or more.

Louver display

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

(Power On indicator)

Indicates that the power is on.

Fan Speed indicator

Shows the selected fan speed.

Ventilation indicator

Appears when the unit is running in Ventilation mode.

Operation Section

Temperature setting buttons

Down Up

Timer Menu button (Monitor/Set button)

Mode button (Return button)

Set Time buttons

Back Ahead

Timer On/Off button (Set Day button)

Opening the cover

ON/OFF button

Fan Speed button

Filter button (<Enter> button)

Test Run button

Check button (Clear button)

Airflow Up/Down button

Louver button ( Operation button)

To return operation number

Ventilation button ( Operation button)

To go to next operation number

Built-in temperature sensor

Displays if the airflow is set to low or downward during COOL or DRY mode. (Operation varies according to model.) The indicator goes off in 1 hour, when the airflow direction also changes.

4-4. WIRED REMOTE CONTROLLER (OPTION) <PAR-21MAA>

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

OCH491B

Page 9

SPECIFICATIONS

Single phase, 50Hz, 230V

Munsell 6.4Y 8.9/0.4

Plate fin coil

Sirocco fan (direct) x 3

0.095

15-16-17-19(530-565-600-670)

0(direct blow)

Remote controller & built-in

33-35-37-40

26(1)

1,280(50-3/8)

680(26-3/4) 230(9-1/16)

32(71)

Cooling

0.06

0.39

Heating

0.06

0.39

PCA-RP60KAQ , PCA-RP60KAQR1

*/min(CFM)

Pa(mmAq)

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

kg(lbs)

Service Ref.

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

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

Weight

W D H

INDOOR UNIT

Cooling

0.05

0.37

Heating

0.05

0.37

Single phase, 50Hz, 230V

Munsell 6.4Y 8.9/0.4

Plate fin coil

Sirocco fan (direct) x 2

0.090

10-11-13-15(355-390-460-530)

0(direct blow)

Remote controller & built-in

32-34-37-40

26(1)

960(37-13/16)

680(26-3/4) 230(9-1/16)

25(55)

PCA-RP50KAQ , PCA-RP50KAQR1

*/min(CFM)

Pa(mmAq)

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

kg(lbs)

Service Ref.

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

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

Weight

W D H

INDOOR UNIT

5-1. SPECIFICATIONS

Cooling

0.04

0.29

Heating

0.04

0.27

Single phase, 50Hz, 230V

Munsell 6.4Y 8.9/0.4

Plate fin coil

Sirocco fan (direct) x 2

0.090

10-11-12-14(355-390-460-497)

0(direct blow)

Remote controller & built-in

31-33-36-39

26(1)

960(37-13/16)

680(26-3/4) 230(9-1/16)

24(53)

PCA-RP35KAQ

*/min(CFM)

Pa(mmAq)

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

kg(lbs)

Service Ref.

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

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

Weight

W D H

INDOOR UNIT

OCH491B

Page 10

Single phase, 50Hz, 230V

Munsell 6.4Y 8.9/0.4

Plate fin coil

Sirocco fan (direct) × 4

0.160

22-24-26-28(775-850-920-990)

0(direct blow)

Remote controller & built-in

37-39-41-43

26(1)

1,600(63) 680(26-3/4) 230(9-1/16)

36(79)

Cooling

0.09

0.65

Heating

0.09

0.65

PCA-RP100KAQ

*/min(CFM)

Pa(mmAq)

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

kg(lbs)

Service Ref.

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

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

Weight

W D H

INDOOR UNIT

Single phase, 50Hz, 230V

Munsell 6.4Y 8.9/0.4

Plate fin coil

Sirocco fan (direct) × 4

0.160

23-25-27-29(810-885-955-1025)

0(direct blow)

Remote controller & built-in

39-41-43-45

26(1)

1,600(63) 680(26-3/4) 230(9-1/16)

38(84)

Cooling

0.11

0.76

Heating

0.11

0.76

PCA-RP125KAQ

*/min(CFM)

Pa(mmAq)

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

kg(lbs)

Service Ref.

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

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

Weight

D H

INDOOR UNIT

Cooling

0.06

0.42

Heating

0.06

0.42

PCA-RP71KAQ , PCA-RP71KAQR1

*/min(CFM)

Pa(mmAq)

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

kg(lbs)

Service Ref.

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

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

Weight

D H

INDOOR UNIT

Single phase, 50Hz, 230V

Munsell 6.4Y 8.9/0.4

Plate fin coil

Sirocco fan (direct) x 3

0.095

16-17-18-20(565-600-635-705)

0(direct blow)

Remote controller & built-in

35-37-39-41

26(1)

1,280(50-3/8)

680(26-3/4) 230(9-1/16)

32(71)

OCH491B

Page 11

Single phase, 50Hz, 230V

Munsell 6.4Y 8.9/0.4

Plate fin coil

Sirocco fan (direct) × 4

0.160

24-26-29-32(850-920-1025-1130)

0(direct blow)

Remote controller & built-in

41-43-45-48

26(1)

1,600(63) 680(26-3/4) 230(9-1/16)

39(86)

Cooling

0.14

0.90

Heating

0.14

0.90

PCA-RP140KAQ

*/min(CFM)

Pa(mmAq)

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

kg(lbs)

Service Ref.

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

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

Weight

W D H

INDOOR UNIT

OCH491B

Page 12

PCA-RP35, 50KAQ

PCA-RP60, 71KAQ



50 0

-50

-100

-150

-200

-250

-300

Static pressure[Pa]

Airflow rate[m³/min]

0 1 2 3 4

50 0

-50

-100

-150

-200

-250

-300

Static pressure[Pa]

Airflow rate[m³/min]

0 1 2 3 4

50 0

-50

-100

-150

-200

-250

-300

Static pressure[Pa]

Airflow rate[m³/min]

0 1 2 3 4



PCA-RP50KAQR1

PCA-RP60, 71KAQR1

PCA-RP100, 125, 140KAQ



5-2. FRESH AIR INTAKE AMOUNT & STATIC PRESSURE CHARACTERISTICS

Curve in the graphs

Duct characteristics at site

Q…Designed amount of fresh air intake

/min>

A…Static pressure loss of fresh air

intake duct system with airflow amount Q <Pa>

…

Forced static pressure at air conditioner

inlet with airflow amount Q

<Pa>

C…Static pressure of booster fan with

airflow amount Q <Pa>

D…Static pressure loss increase amount

of fresh air intake duct system for airflow amount Q <Pa>

E…Static pressure of indoor unit with

airflow amount Q <Pa>

Qa…Estimated amount of fresh air

intake without D <m3/min>

How to read curves

OCH491B

Page 13

1313

NOISE CRITERION CURVES6

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 bar)

BAND CENTER FREQUENCIES, Hz

PCA-RP50KAQ PCA-RP50KAQR1

NOTCH

High Medium1 Medium2

Low

SPL(dB)

40 37 34 32

LINE

NOTCH

High Medium1 Medium2

Low

SPL(dB)

40 37 35 33

LINE

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

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

BAND CENTER FREQUENCIES, Hz

PCA-RP60KAQ PCA-RP60KAQR1

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 BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 bar)

PCA-RP71KAQ PCA-RP71KAQR1

NOTCH

High Medium1 Medium2

Low

SPL(dB)

41 39 37 35

LINE

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

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

BAND CENTER FREQUENCIES, Hz

CA-RP35KAQ

NOTCH

High Medium1 Medium2

Low

SPL(dB)

39 36 33 31

LINE

OCH491B

Page 14

unit

about 1.4m

MICROPHONE

ceiling

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

BAND CENTER FREQUENCIES, Hz

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

PCA-RP125KAQ

NOTCH

High Medium1 Medium2

Low

SPL(dB)

45 43 41 39

LINE

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

BAND CENTER FREQUENCIES, Hz

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

PCA-RP140KAQ

NOTCH

High Medium1 Medium2

Low

SPL(dB)

48 45 43 41

LINE

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

BAND CENTER FREQUENCIES, Hz

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

PCA-RP100KAQ

NOTCH

High Medium1 Medium2

Low

SPL(dB)

43 41 39 37

LINE

OCH491B

Page 15

1515

(Drainage)

When drain socket

is installed

246

When drain socket

is installed

233

When electrical box

is pulled down

Electrical box

NOTES.

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

2.Please be sure when installing the

drain pump (option parts),

refrigerant pipe will be only upward.

Electrical box

233

Air outlet

Air intake

678

123

Knockout hole for upper drain pipe arrangement

Knockout hole for fresh air intake ø100

Knockout hole for wiring arrangement 2-ø22

Knockout hole for wiring arrangement 2-ø26

Drainage pipe connection(26mmI.D.)

Drainage pipe connection(for the left arrangement)

Knockout hole for left drain-piping arrangement

Refrigerant-pipe connection(gas pipe side/flared connection)

Refrigerant-pipe connection(liquid pipe side/flared connection)

In case of the rear pipe arrangement, make sure to

remove the shaded portions from the independent piece.

Then put the independent piece back in initial position.

(The heat exchanger might be clogged because of dust)

246

(Drainage)

(gas ø12.7)

(liquid ø6.35)

150

62140

917(Suspension bolt pitch)

320

680

84 88

195

230

254

476

680

182 85

878

260

85 86 2

126

169

121

190

18 38

120°

960 22

853

124 76

190

387461

Ceiling

184

203

ø125

138

[FRONT VIEW]

Accessory···Drain socket (I.D. 26)

(71)

236

PCA-RP35KAQ PCA-RP50KAQ PCA-RP50KAQR1

Unit : mm

OUTLINES AND DIMENSIONS7

INDOOR UNIT

OCH491B

Page 16

Unit : mm

PCA-RP60, 71KAQ PCA-RP60, 71KAQR1

(Drainage)

When drain socket

is installed

246

When drain socket

is installed

233

Air intake

123

678

Knockout hole for upper drain pipe arrangement

Knockout hole for fresh air intake ø100

Knockout hole for wiring arrangement 2-ø22

Knockout hole for wiring arrangement 2-ø26

Drainage pipe connection(26mmI.D.)

Drainage pipe connection(for the left arrangement)

Knockout hole for left drain-piping arrangement

Refrigerant-pipe connection(gas pipe side/flared connection)

Refrigerant-pipe connection(liquid pipe side/flared connection)

NOTES.

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

2.Please be sure when installing the

drain pump (option parts),

refrigerant pipe will be only upward.

Air outlet

233

Electrical box

When electrical box

is pulled down

Electrical box

In case of the rear pipe arrangement, make sure to

remove the shaded portions from the independent piece.

Then put the independent piece back in initial position.

(The heat exchanger might be clogged because of dust)

246

236

150

62140

1237(Suspension bolt pitch)

320

680

84 88

195

230

254

476

680

182 85

1198

260

85 86 2

126

16937

121

138

190 1

18 38

120°

1280 22

1173

124 76

46 190

387461

ø125

[FRONT VIEW]

Ceiling

(Drainage)

(gas ø15.88)

(liquid )

Accessory···Drain socket (I.D. 26)

Flare nut ø6.35 (RP60 only)

RP60

179

203

RP71

180

200

5 LIQUID SIDE

4 GAS SIDE

:Initial flare nut size

Use the current nuts meeting the pipe size of the outdoor unit.

Available pipe size

RP60

ø6.35

ø9.52

ø15.88

RP71

ø9.52

ø15.88

(71)

OCH491B

Page 17

Unit : mm

PCA-RP100, 125, 140KAQ

(Drainage)

When drain socket

is installed

246

When drain socket

is installed

233

Knockout hole for upper drain pipe arrangement

Knockout hole for fresh air intake ø100

Knockout hole for wiring arrangement 2-ø22

Knockout hole for wiring arrangement 2-ø26

678

Drainage pipe connection(26mmI.D.)

Drainage pipe connection(for the left arrangement)

Knockout hole for left drain-piping arrangement

Refrigerant-pipe connection(gas pipe side/flared connection)

Refrigerant-pipe connection(liquid pipe side/flared connection)

123

Ceiling

[FRONT VIEW]

Electrical box

When electrical box

is pulled down

NOTES.

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

2.Please be sure when installing the

drain pump (option parts),

refrigerant pipe will be only upward.

In case of the rear pipe arrangement, make sure to

remove the shaded portions from the independent piece.

Then put the independent piece back in initial position.

(The heat exchanger might be clogged because of dust)

246

180

200

(Drainage)

(gas ø15.88)

(liquid ø9.52)

236

150

62140

1557

320

680

84 88

195

230

233

254

476

680

182 85

1518

260

85 86 2

126

16937

121

138

190 1

18 38

120°

1600 22

1493

124

190

387

461

ø125

Electrical box

Air outlet

Air intake

(Suspension bolt pitch)

Accessory···Drain socket (I.D. 26)

OCH491B

Page 18

WIRED REMOTE CONTROLLER

Unit : mm

PAR-21MAA

PAR-30MAA

130

12083.5

19.5

120

83.5

(Option)

OCH491B

Page 19

1919

PCA-RP35KAQ PCA-RP50KAQ PCA-RP60KAQ PCA-RP71KAQ PCA-RP100KAQ PCA-RP125KAQ PCA-RP140KAQ PCA-RP50KAQR1 PCA-RP60KAQR1 PCA-RP71KAQR1

WIRING DIAGRAM8

<Table 2>SW2 (CAPACITY CODE)

Service

MODELS

SW2

PCA-RP100KAQ

MODELS

ON OFF

12345

PCA-RP35KAQ

ON OFF

12345

PCA-RP125KAQ

ON OFF

12345

PCA-RP140KAQ

ON OFF

12345

PCA-RP50KAQ

ON OFF

12345

PCA-RP60KAQ

ON OFF

12345

PCA-RP71KAQ

ON OFF

12345

<Table 1> SW1 (MODEL SELECTION)

SW1

ON OFF

12345

*Be sure to turn off the source power and then disconnect fan motor connector. (Failure to do so will cause trouble in fan motor)

Service

Notes: 1. SymboIs used in wiring diagram above are, : Connector,

:Terminal (block).

2. Indoor and outdoor connecting wires are made with poIarities, 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. *1: When work to Supply power separately to indoor and outdoor units was applied, refer to Fig 1. *2: For power supply system of this unit, refer to the caution label located near this diagram.

FLOAT SW

CN4F

(WHT)

When attaching drain pump (option parts), remove the jumper connector CN4F and fit the drain float switch (FS).

When attaching drain pump (option parts)

INDOOR/OUTDOOR

COMMUNICATION

CN3C

(BLU)

113

1234567891011121314151617

CN2L

ON OFF

SWE

J42J41

SW2SW1

LED3 LED2 LED1

LED2 LED1

SW2

SW1

CNB

t˚ t˚ t˚

TH2 TH5 TH1

W.B

I.B

Refer to tables 1 and 2

TB4 YLW ORN

ORN

BRN

YLW

ORN

DCL

TO OUTDOOR UNIT

135

1~ DP

(OPTION PARTS)

D.U.M

CNP

(BLU)

OUTDOOR

CN01

(BLK)

S1 S2 S3

741

(OPTION PARTS)

REMOCON

CN22

(BLU)

WIRELESS

CN90

(WHT)

VANE

CNV

(WHT)

Pair No.

FAN

CNMF

(WHT

)

INTAKE

CN20

(RED)

FLOAT SW

CN4F

(WHT)

LIQUID/PIPE

CN44

(WHT)

CN32

(WHT)

CN51(WHT)

CN41(WHT)

FUSE

+–

R.B

TB5

TRANSMISSION WIRES DC12V

TB6

2 1

The black square()indicates a switch position.

SYMBOL SYMBOLNAME NAME

I.B

R.B

INDOOR CONTROLLER BOARD

FUSE (T6.3AL250V)

CONNECTOR (LOSSNAY) CONNECTOR (REMOTE SWITCH) CONNECTOR (HA TERMINAL-A) CONNECTOR (CENTRALLY CONTROL)

POWER SUPPLY (I.B) POWER SUPPLY (R.B) TRANSMISSION (INDOOR-OUTDOOR)

RELAY (DRAIN PUMP) WIRED REMOTE CONTROLLER BOARD

SWITCH (MODEL SELECTION) See table 1 SWITCH (CAPACITY CODE) See table 2 CONNECTOR (EMERGENCY OPERATION)

FAN MOTOR VANE MOTOR

DRAIN PUMP DRAIN FLOAT SWITCH

TERMINAL BLOCK

(Indoor unit Power (option parts))

TERMINAL BLOCK (

INDOOR/OUTDOOR CONNECTING LINE

) TERMINAL BLOCK (REMOTE CONTROLLER TRANSMISSION LINE)

REACTOR

ROOM TEMP. THERMISTOR (0ºC / 15k, 25ºC / 5. 4k DETECT) PIPE TEMP. THERMISTOR/LIQUID (0ºC / 15k, 25ºC / 5. 4k DETECT) COND. / EVA. TEMP. THERMISTOR (0ºC / 15k, 25ºC / 5. 4k DETECT)

FUSE

CN2L

CN32

TB2

CN41 CN51

TB4

DCL

LED1

TB5,TB6

LED2

TH1

LED3

TH2

SW1

TH5

SW2 SWE

[LEGEND]

W.B

BZ LED1 LED2

SW1 SW2

OPTION PARTS

PCB FOR WIRELESS REMOTE CONTROLLER

RECEIVING UNIT

BUZZER LED (OPERATION INDICATION : GREEN) LED (PREPARATION FOR HEATING : ORANGE)

EMERGENCY OPERATION (HEAT / DOWN) EMERGENCY OPERATION (COOL / UP)

DCL

TO OUTDOOR UNIT

INDOOR/OUTDOOR

COMMUNICATION

CN3C (BLU)

CN01 (BLK)

ORN

YLW YLW

BLU

RED

GRN/YLW

I.B

*1 (Fig. 1)

I.B

TB2

POWER SUPPLY (

1PHASE)

230V 50Hz

ORN ORN

YLW

BRN

TB4

S1 S2 S3

(OPTION PARTS)

OCH491B

Page 20

Pipe temperature thermistor/liquid (TH2)

Distributor with strainer 1/2 #50/#50

Condenser/evaporator temperature thermistor (TH5)

Room temperature thermistor (TH1)

Refrigerant flow in cooling Refrigerant flow in heating

Strainer #50

Heat exchanger

Refrigerant GAS pipe connection (Flare)

Refrigerant LIQUID pipe connection (Flare)

REFRIGERANT SYSTEM DIAGRAM9

PCA-RP35KAQ PCA-RP50KAQ PCA-RP60KAQ PCA-RP71KAQ PCA-RP100KAQ PCA-RP125KAQ PCA-RP140KAQ PCA-RP50KAQR1 PCA-RP60KAQR1 PCA-RP71KAQR1

OCH491B

Page 21

Present and past error codes are logged and displayed on the wired remote controller or controller board of outdoor unit. Actions to be taken for service and the trouble reoccurrence at field are summarized in the table below. Check the contents below before investigating details.

10-1. TROUBLESHOOTING

Unit conditions at service

Error code

Actions to be taken for service (summary)

The trouble is reoccurring.

Displayed

Not displayed

Judge what is wrong and take a corrective action according to “10-3. Self-diagnosis action table”.

Conduct troubleshooting and ascertain the cause of the trouble according to “10-4. Troubleshooting of problems”.

The trouble is not reoccurring.

Logged

Not logged

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

Re-check the abnormal symptom.



Conduct trouble shooting and ascertain the cause of the trouble according to “10-4. Troubleshooting of problems”. Continue to operate unit for the time being if the cause is not ascertained. There is no abnormality concerning of parts such as electrical component, controller board, remote controller and etc.

TROUBLESHOOTING10

OCH491B

Page 22

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

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

• Select the refrigerant address of the indoor unit for the self-diagnosis.

Note: Set refrigerant address using the

outdoor unit’s DIP switch (SW1). (For more information, see the outdoor unit installation manual.)

• If an air conditioner error occurs, the indoor unit's sensor emits an intermittent buzzer sound, the operation light flashes, and the error code is output.

(It takes 3 seconds at most for error code to appear.)

• The check mode is cancelled.

[Procedure]

1. Press the CHECK button twice.

2. Press the temperature buttons.

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

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

<Malfunction-diagnosis method at maintenance service>

10-2. 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.

ON/OFF

TEMP

FAN

VANE

MODE

CHECK

LOUVER

TEST RUN

AUTO STOP

AUTO START

min

RESET

SET

CLOCK

CHECK

CHECK display

Temperature button

CHECK button

Refrigerant address display

HOUR button

ON/OFF button

■ Wireless remote controller (Option)

OCH491B

Page 23

[Output pattern A] Errors detected by indoor unit

[Output pattern B]

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

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

the OPERATION INDICATOR lamp does not come on,

there are no error records.

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

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

OPERATION INDICATOR lamp flash pattern

Beep Beep Beep Beep Beep Beep Beep

Off

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

Off

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

· · · Repeated

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

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

1st2nd3

1st2

Self-check starts (Start signal received)

Beeper sounds

[Output pattern B]

OPERATION INDICATOR lamp flash pattern

Beep

Beep Beep Beep Beep Beep Beep

Off

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

0.5 sec.

Off

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

· · · Repeated

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

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

1st2nd3

1st2

Self-check starts (Start signal received)

Beeper sounds

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

Beeper sounds/OPERATION

INDICATOR lamp flashes Check code

Symptom Remark

(Number of times)

Wireless remote controller

Wired remote controller

Beeper sounds/OPERATION

INDICATOR lamp flashes Check code

(Number of times)

Wireless remote controller

Wired remote controller

1P1

Intake sensor error

P9 Pipe (TH5) sensor error

P2 Pipe (TH2) sensor error

3E6,E7

Indoor/outdoor unit communication error

4 P4 Drain sensor error/Float switch connector (CN4F) open 5

P5 PA

Drain pump error

Forced compressor stop(due to water leakage abnormality) 6 P6 Freezing/Overheating protection operation 7 EE Communication error between indoor and outdoor units 8 P8 Pipe temperature error 9 E4, E5 Remote controller signal receiving error

–

– –

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

Symptom

Remark

Indoor/outdoor unit communication error

(Transmitting error) (Outdoor unit)

Open/short of outdoor unit thermistors

Compressor overcurrent interruption (When compressor locked)

Abnormal high discharging temperature/49C operated/

insufficient refrigerant

Abnormal high pressure (63H operated)/Overheating

protection operation

Abnormal temperature of heat sink

Outdoor unit fan protection stop

Compressor overcurrent interruption/Abnormal of power module

Abnormality of super heat due to low discharge temperature

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

UP U3,U4 UF

U1,Ud (UD) *3

U8 U6 U7

U9,UH

Others

– –

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

For details, check the LED display of the outdoor controller board. As for outdoor unit, refer to outdoor unit's service manual.

12 Fb (FB) *3 Indoor unit control system error (memory error, etc.) 14 PL Refrigerant circuit abnormal

–

E0, E3

– E1, E2 Remote controller control board error

Remote controller transmission error

Compressor overcurrent interruption

• 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. The check code in the parenthesis indicates PAR-30MAA model.

OCH491B

Page 24

•

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

Symptom

Cause

Wired remote controller LED 1, 2 (PCB in outdoor unit)

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 Error code

Display messages do not 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

After LED 1, 2 are lighted, LED 2 is

turned off, then only LED 1 is

Only LED 1 is lighted. 

LED 1, 2 blink.

Only LED 1 is lighted.



LED 1 blinks twice, LED 2 blinks once.

• For about 2 minutes following power-on,operation of the remote controller is not possible due to s y s t e m s t a r t - u p . ( C o r rect 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 (L1, L2, L3)

•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 addresses “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.

lighted.

(Correct operation)

• 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.

OCH491B

Page 25

10-3. SELF-DIAGNOSIS ACTION TABLE

Note: Refer to the manual of outdoor unit for the details of display

such as F, U, and other E.

Error 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: ...15.0k"

10: .... 9.6k"

20: .... 6.3k"

30: .... 4.3k"

40: .... 3.0k"

If you put force on (draw or bend) the lead wire with 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 10-7. 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 10-7. 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

Catch of drain float switch or malfunction of moving parts cause drain float switch to be detected under water (Switch On)

4 Defective indoor-controller

board

1 Check if drain pump operates. 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. Turn the power off, and on again to operate after check.

OCH491B

Page 26

Error Code

Abnormal point and detection method

Cause

Countermeasure

Freezing/overheating protection is operating

1 Freezing protection (Cooling mode)

The unit is in 6-minute resume prevention 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 prevention mode.

2 Overheating protection (Heating mode)

The units 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 defective.

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 defective.

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 10-6.

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 10-6.

5 Check outdoor fan motor. 6~8Check 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.

23Check 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)’.

(

)

OCH491B

Page 27

Error Code

Abnormal point and detection method

Cause

Countermeasure

Pipe temperature thermistor/ Condenser-Evaporator (TH5)

1 The unit is in 3-minute resume protection

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 10-7. 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. (Error code : E0) 2 Abnormal if sub remote controller could

not receive any signal for 2 minutes.

(Error 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.

(Error code: E4) 2 Indoor controller board cannot receive

any signal from remote controller for 2

minutes. (Error 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 × 3 or more.)

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

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

When it is not the above-mentioned problem of

1~3 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.

* If the unit is not normal after replacing

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.

(Error 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. (Error code: E3)

1 Abnormal if indoor controller board could

not find blank of transmission path.

(Error 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. (Error 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 abnormality.

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 controllers)

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

Noise has entered into transmission wire of remote controller.

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

(

)

OCH491B

Page 28

Error Code

Abnormal point and detection method

Cause

Countermeasure

(FB)*

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.

* 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.

* Other indoor controller board may have defect

in 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.

* The check code in the parenthesis indicates

PAR-30MAA model.

Remote controller control board

1 Abnormal if data cannot be read nor-

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

(Error code: E1) 2 Abnormal if the clock function of remote

controller cannot be operated normally.

(Error 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 abnormality

when the following conditions, a) and b), are satisfied while the above-mentioned 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.

*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 waving due to filter clogging.

6 Extension piping connection

difference at twin, triple, quadruple system.

7 Miswiring of indoor/outdoor

connecting at twin, triple, quadruple system.

Room temperature thermistor/ liquid pipe temperature thermistor 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

display of outdoor controller board.

OCH491B

Page 29

Error Code

Abnormal point and detection method

Cause

Countermeasure

Abnormal refrigerant circuit

During Cooling, Dry, or Auto Cooling

operation, when the following are regarded as failures when detected for one second.

a) The compressor continues to run for 30

or more seconds.

b) The liquid pipe temperature or the

condense/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 10-6-2. 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.

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Page 30

10-4. TROUBLESHOOTING OF PROBLEMS

Note: Refer to the manual of outdoor unit 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 220~240V 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 220~240V 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 AC 220~240V is not detected, check the power wiring to outdoor unit and the breaker.

• When AC 220~240V is detected, check

2 (below).

2 Check the voltage between outdoor

terminal block S1 and S2.

• When AC 220~240V is not detected,

—check the fuse on outdoor controller

circuit board.

—check the wiring connection.

• When AC 220~240V is detected, check

3 (below).

3 Check the voltage between indoor

terminal block S1 and S2.

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

• When AC 220~240V is detected, check

4 (below).

Check the fuse on indoor controller board. Check the wiring connection. If no problem are found, indoor controller

board is defective.

1 Check the voltage of indoor power supply

terminal block (L,N).

• When AC220~240V is not detected, check the power supply wiring.

• When AC220~240V 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).

Check the fuse on indoor controller board. Check the wiring connection. If no problem are 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.

OCH491B

Page 31

Note: Refer to the manual of outdoor unit for the detail of remote

controller.

(3) Upward/downward vane

performance 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 “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 address is 0.

3 Short-cut 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 shortcut 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 of connector, replace indoor controller board. When the same trouble occurs even if indoor controller board is replaced, replace wireless remote controller board.

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Page 32

10-5. EMERGENCY OPERATION

10-5-1. When wireless remote controller fails or its battery is exhausted

10-5-2. 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

* Lighting of the Operation lamp

means the start of operation.

Note:

• Details of emergency mode are as shown below.

Operation mode COOL HEAT Set temperature 24oC24oC Fan speed High High Airﬂow direction Horizontal Downward 5

Stopping operation

• To stop operation, press the

button or the button .

1.When the wired remote control or the indoor unit microprocessor 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 operating. (option) * Note on the wireless remote control: when the remote control 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 microprocessor 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. Note: Emergency operation will not work unless outdoor unit is PU series.

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 control 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 position.

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Page 33

10-6. HOW TO CHECK THE PARTS

Parts name Check points

Disconnect the connector then measure the resistance with a tester. (At the ambient temperature of 10°C~30°C)

Measure the resistance between the terminals with a tester. (Winding temperature 20°C)

Measure the resistance between the terminals with a tester.

Drain pump (DP) (Option)

Drain float switch (FS)

(Option)

(Refer to Thermistor characteristic graph.)

Room temperature thermistor (TH1) Liquid pipe thermistor (TH2) Condenser/evaporator temperature thermistor (TH5)

1 3

Normal

4.3k~9.6k

Abnormal

Open or short

Normal Abnormal

290 Open or short

State of moving part

Abnormal

DOWN Other than open

Normal

Open

Short Other than short

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

Vane motor (MV)

Abnormal

Open or short

Red - Yellow Red - Blue Red - Orange Red - White

Connector

Normal

300

Moving part

Switch Magnet

Moving part

Yellow

Blue

Red

Orange

White

PCA-RP35KAQ PCA-RP50KAQ PCA-RP60KAQ PCA-RP71KAQ PCA-RP100KAQ PCA-RP125KAQ PCA-RP140KAQ PCA-RP50KAQR1 PCA-RP60KAQR1 PCA-RP71KAQR1

-20-100 1020304050

< 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: 15k'

10: 9.6k' 20: 6.3k' 25: 5.4k' 30: 4.3k' 40: 3.0k'

Thermistor for lower temperature

273+t

273

10-6-1. Thermistor

OCH491B

Page 34

10-6-2. DC Fan motor (fan motor/indoor controller circuit board)

Notes

· High voltage is applied to the connecter (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.

Yes

Wiring contact check

Contact of fan motor connector (CNMF)

Power supply check (Remove the connector (CNMF))

Measure the voltage in the indoor controller circuit

board.

TEST POINT

 : VDC (between 1 (+) and 4 (-) of the fan connector): VDC DC310~340V

TEST POINT  : VCC(between 5 (+) and 4 (-) of the fan connector): VCC DC15V

Wiring recovery

Replace the indoor controller board.

Replace the fan motor.

Replace the indoor

controller board.

Replace the fan motor.

Is the voltage normal?

Is there contact failure?





Yes

Check the operation of fan. END

Yes

Check the operation END

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

Sensor signal check

Measure the voltage between CNMF

 and  DC 0V

and DC 15V in the indoor controller circuit board.

Does the voltage repeat DC 0V and DC 15V?

Yes

Indoor controller board fuse check

Is the fuse normal?

Replace the fuse.

Check the operation END

Replace the indoor

controller board.

Check the operation

END

Replace the fan motor.

Yes

OCH491B

Page 35

10-7. TEST POINT DIAGRAM

Indoor controller board

PCA-RP35KAQ PCA-RP50KAQ PCA-RP60KAQ PCA-RP71KAQ PCA-RP100KAQ PCA-RP125KAQ PCA-RP140KAQ PCA-RP50KAQR1 PCA-RP60KAQR1 PCA-RP71KAQR1

CN3C Transmission (Indoor/outdoor) (0~24V DC)

SW2 Capacity setting

SW1 Model selection

CN2L Connector (LOSSNAY)

CN41 Connector

(HA terminal-A)

CN90

CN105

Connect to the wireless remote controller board (CNB)

CN20 Room temperature thermistor (TH1)

CN22 Connect to the terminal block (TB5) (Remote controller connecting wire) (10.4~14.6V DC)

LED2 Power supply (R.B)

LED1 Power supply (I.B)

LED3 Transmission (Indoor/outdoor)

CNP Drain-pump output (DP) (220-240V AC) (option)

CN01 Connect to the Terminal Block (TB4) (Indoor/outdoor connecting line) Between  and  220-240V AC

CNV Vane motor output (MV) 12V pulse output

SWE Emergency operation

Jumper wire J41,J42 Pair No. setting for wireless remote controller

FUSE

6.3A /250V

CNMF Fan motor

-: DC 310~340V -: DC15V -: DC0~6.5V -: Stop Dc0 or 15V

Operation DC7.5V (0~15V pulse)

VSP: Voltage between pins of C626 DC0V (FAN stop) DC1~6.5V (FAN operation) (Same as (+)–(-) of CNMF)

VFG: Voltage between PC6722 and C955(-) (Same as (+)–(-) of CNMF)

VCC: Voltage between pins of C955 15VDC (Same as (+)–(-) of CNMF)

CN44 Pipe temperature thermistor

- : Liquid (TH2) - : Cond./Eva. (TH5)

CN4F Drain float switch (FS) (option)

CN51 Centrally control - : Control signal 13VDC pulse input (: +) - : Operation indicator 13VDC (: +) - : Malfunction indicator 13VDC (: +)

OCH491B

Page 36

SW1

Setting by the dip switch and jumper wire

Functions

Jumper wire

Model settings

Capacity settings

Pair number setting with wireless remote controller

For service board

Remarks

SW2

J41 J42

Unit type setting

JP1

Indoor controller board type setting

JP3

0 1 2

3 ~ 9

Wireless remote

controller setting

Control PCB setting

J41 J42

<Initial setting> Wireless remote controller: 0 Control PCB: (for both J41 and J42) Four 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 line is disconnected.)

There is no jumper (JP1) because these models have the cond./eva. temperature thermistor (TH5).

(Marks in the table below) Jumper wire ( : Short : Open)

Without TH5

With TH5

Model

JP1

For product

Service parts

Indoor controller board type

JP3

12345

OFF

Service board

MODELS

PCA-RP50KAQ

PCA-RP35KAQ

1 2 3 4 5

ON OFF

1 2 3 4 5

ON OFF

PCA-RP60KAQ

1 2 3 4 5

ON OFF

PCA-RP71KAQ

1 2 3 4 5

ON OFF

PCA-RP100KAQ

1 2 3 4 5

ON OFF

PCA-RP125KAQ

1 2 3 4 5

ON OFF

PCA-RP140KAQ

1 2 3 4 5

ON OFF

The black square () indicates a switch position.

10-8. FUNCTIONS OF DIP SWITCH AND JUMPER WIRE

Each function is controlled by the dip switch and the jumper wire on control P.C. board. SW1 and SW2 are equipped only for service parts. Model setting and capacity setting are memorized in the nonvolatile memory of the control P.C. board of the unit.

OCH491B

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3737

SPECIAL FUNCTION

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 the 11-1-2. and set the request code No. which is not the same as the current one, and set again the former request code No.

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

· When the 1st unit can NOT supply with sufficient capacity for exceptionally high-demand conditions and the actual room temperature reaches set point *, the 2nd unit starts operation in conjunction with the 1st unit.

· Once the actual room temperature goes down to 4 degrees C below set point *, the 2nd unit stops operation automatically. (* set point = set temperature by R/C (remote controller) + 4, 6, 8: (selectable) )

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

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

· When room temperature falls below set point -4:, standby unit stops. (1 unit operation)

11-1. ROTATION FUNCTION (AND BACK-UP FUNCTION, 2ND STAGE CUT-IN FUNCTION)

11-1-1. Operation

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

• Outline of functions

· Main and sub unit operate alternately according to the interval of rotation setting. * 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)

Operation pattern

OC-1

OC-2

IC-1

IC-2

3(2)

Main unit

Sub unit

Refrigerant address "01"

Refrigerant address "00"

Fig. 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

OCH491B

Page 38

• System constraint

· This function is available only in cooling mode.

[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

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

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

26: 2nd unit Cut-in

4 degree C

22: 2nd unit Cut-out

20:

(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(7.2°F) Cut-in function ON(Set point = Set temp.+ 6(10.8°F)

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

11-1-2. How to set rotation function (Back-up function, 2nd stage cut-in function)

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

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

OCH491B

Page 39

F1 F2 F3 F4

Check menu

Cursor

Service menu:

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

F1 F2 F3 F4

Request code

Request:

Request code

Ref.address

Request code

Cursor −＋

Ref.address

Request code

Cursor

−＋

Select "Request code" with the F1 or F2 button, and press the button.

Select "Check" with the

F1 or F2 button, and press the button.

Set the Refrigerant address and Request code.

Select the item to be changed with theF1or

button.

Select the required setting with theF3or

button.

Select the required code No. (311-318, 321-324) with the

F3orF4

button.

■

<Ref.address>setting [ 0 ] – [ 15 ]

■

<Request code>setting

Press the

button, Data will be collected and displayed.

Request code: 311 Rotation and Back-up OFF: 0311

Select "Service" from the Main menu, and press the button.

■ PAR-30MAA/PAR-31MAA

(2) Setting method of each function by wired remote controller

Stop operation ( )

OCH491B

Page 40

Press the button.

Select "Service" with the [Cursor] buttons (F1andF2) or the [Page] buttons (

and

), and press the button.

PAR-30MAA/PAR-31MAA

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 1/1

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

Refrigerant address Data display area Request code display area













PAR-21MAA

Enter the current maintenance password (4 numerical digits).

• Move cursor to the digit you wat to change with the F1orF2 button.

• Set each number (0 through 9) with the

orF4button.

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

Then, press the button.

Select "Check" with theF1orF2 button, and press the button.

Select "Request code" with theF1orF2 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

orF4 button.

Press the F3orF4 button to set the Refrigerant address "0".

Press the F3orF4 button to set the desired request code No.

• Rotation & Back up operation: Please match request code with 311 - 318 either.

• 2nd stage cut-in operation: Please match request code with 321 - 324 either.

Press the button. Data will be collected and displayed.

Press the F3orF4 button to set the Refrigerant address "1".

Please set above

- 0.

To return to the Main menu, press the button.

To stop air conditioner, press the

ON/OFF

button.

Press the

TEST

button for three seconds so that "Maintenance

mode" appears on the screen (at

"00" (Refrigerant address) appears on the screen in a few minutes (at B).

Press the

CHECK

button for three seconds to switch to [Maintenance

monitor]. "−−−" appears on the screen (at

) when [Maintenance monitor] is

activated.

Press the [CLOCK] buttons ( and ) to set the desired

request code No. Rotation & Back up operation: Please match request code with 311 318 either. 2nd stage cut-in operation: Please match request code with 321 - 324 either.

Press the

FILTER

button to perform data request.

(The requested data will be displayed at

in the same way as in

maintenance mode.)

Press the [TEMP] buttons ( and ) to set the Refrigerant

address 01. "01" (Refrigerant address) appears on the screen in a few minutes (at B). Please set above 3 - 5.

To return to normal mode, press the

ON/OFF

button.

(3) Rotation and back up operation

OCH491B

Page 41

4141

PCA-RP35KAQ PCA-RP50KAQ PCA-RP60KAQ PCA-RP71KAQ PCA-RP100KAQ PCA-RP125KAQ PCA-RP140KAQ PCA-RP50KAQR1 PCA-RP60KAQR1 PCA-RP71KAQR1

DISASSEMBLY PROCEDURE

1. Removing the air intake grille

(1)

Slide the air intake grille holding knobs (at 2 or 3 locations) to the rear to open the air intake grille. (See Figure 1)

(2) While the air intake grille left open, push the stoppers

on the rear hinges (at 2 or 3 locations) to pull out the air intake grille. (See Figure 2)

Removing the indoor controller board and the electrical box

(1) Remove the air intake grille. (See Figure 1, 2) (2) Remove the beam by removing screws. (See Photo 1) (3) Remove 2 screws from the electrical cover, and remove

the electrical cover.

(4) Remove 2 screws from the electrical box and pull the

electrical box downward.

Temporarily secure the electrical box using 2 hooks in

the back of electrical box.

(5) Disconnect the connectors on the indoor controller

board.

[Removing the electrical box] (6) Disconnect the wires from the terminal blocks and pull

out the electrical box. (See Photo 2)

[Removing the indoor controller board] (6) Remove the 6 supports from the indoor controller board

and remove the indoor controller board. (See Photo 3)

Figure 1

Photo 1

Photo 2

slide

Air intake grille

Air intake grille holding knobs

hinges

Pull out the air intake grille

Figure 2

Beam

Beam fixing screw (4 × 8 PT)

Electrical cover fixing screws

Beam fixing screws

Electrical cover

Photo 3

Electrical box fixing screws

Electrical box

Room temperature thermistor (TH1)

Indoor controller board (I.B.)

Terminal blocks (TB4),(TB5)

Be careful when removing heavy parts.

(Photo: PCA-RP125KAQ)

Reactor (DCL)

OPERATING PROCEDURE

PHOTOS & ILLUSTRATIONS

OCH491B

Page 42

OPERATING PROCEDURE

PHOTOS & ILLUSTRATIONS

3. Removing the room temperature thermistor (TH1)

(1) Remove the air intake grille. (See Figure 1, 2) (2) Remove the beam by removing screws. (See Photo 1) (3) Remove 2 screws from the electrical cover, and remove

the electrical cover.

(4) Remove 2 screws from the electrical box and pull the

electrical box downward.

Temporarily secure the electrical box using 2 hooks in

the back of electrical box.

(5) Disconnect the connector CN20 (red) from the indoor

controller board.

(6) Remove the sensor holder from the electrical box and

remove the thermistor from the holder.

Photo 4

Casing

Room temperature thermistor (TH1)

Electrical box

4. Removing the fan motor and right side fan

(1) Remove the air intake grille. (See Figure 1, 2) (2) Remove the beam by removing screws. (See Photo 1) (3) Remove 2 screws from the electrical cover, and remove

the electrical cover.

(4) Remove 2 screws from the electrical box and pull the

electrical box downward.

(5) Temporarily secure the electrical box using 2 hooks in

the back of electrical box.

(6) Remove 4 screws fixing fan guard of the fan motor. (2

screws : See Photo 5 / 2 screws : Upper the electrical box)

(7) Remove 2 screws fixing fan guard of piping side and

remove the fan guard. (See Photo 6)

(8) Remove the lower casing while pressing the 4 catches of

the casing (right side of the fan motor).

(9) Loosen the 2 set screws (2 hexagon set screws) of con-

necting joint and slide the fan motor to the left. (See Photo 5)

(

) Remove the motor piece (left and right, each 1 screw).

(See Photo 5)

(

) Remove the fan motor and right side fan together.

(12) Loosen the set screw (hexagon set screw) of fan and

remove the fan from the shaft. (See Photo 7, 8)

Photo 8

Set screws

Fan guard fixing screws

Connecting joint

Motor piece fixing screws

Fan motor

Photo 6

Fan guard fixing screws

Catch

Fan guard

Catch

Photo 7

Hole for driver

Hexagon set screw

Photo 5

OCH491B

Page 43

OPERATING PROCEDURE

PHOTOS & ILLUSTRATIONS

Screws

Side panel (Right)

Side panel (Left)

Sliding the panel to the front

Figure 3

6. Removing the side panel

(1) Remove the air intake grille. (See Figure 1, 2) (2) Remove the screws from the side panel, and remove

the side panel by sliding the panel to the front.

(3) Unhook the side panel support hanger, and then slide

the side panel forward to remove it.

5. Removing the fan (3 connection)

(1) Remove the air intake grille. (See Figure 1, 2) (2) Remove the beam by removing screws. (See Photo 1) (3) Remove 2 screws from the electrical cover, and remove

the electrical cover.

(4) Remove 2 screws from the electrical box and pull the

electrical box downward.

Temporarily secure the electrical box using 2 hooks in

the back of electrical box.

(5) Remove 4 screws from the fan guard of the fan motor.

(See Photo 5)

(6) Remove 2 screws from the left side beam and remove

the beam. (See Photo 1)

(7) Remove the 3 screws from center fan guard and remove

the fan guard. (2 screws : See Photo 9 / 1 screw : Drain pan side)

(8) Remove 2 screws from the left fan guard and remove

the fan guard. (See Photo 10)

(9) Loosen 2 set screws (2 hexagon set screws) of connect-

ing joint. (See Photo 5)

(

) Remove 3 lower casings while pressing each 4 catches

of the casing.

(11) Remove the 4 screws from the bearing support. (See

Photo 11)

(12) Slide the connecting joint to the left and remove the fans

and shaft together. (See Photo 12)

(13) Remove the fan from the shaft. (See Photo 7, 8)

Photo 9

Beam

Electrical box

Fan guard

Fan guard fixing screws

Photo 10

Fan guard fixing screws

Photo 11

Bearing support fixing screws

Bearing support

Shaft

Photo 12

Fans (3 connection)

Bearing support

Shaft

Side panel support hanger

Hole for side panel support hanger

Figure 4

OCH491B

Page 44

OPERATING PROCEDURE

PHOTOS & ILLUSTRATIONS

8. Removing the under panel

(1) Remove the air intake grille. (See Figure 1, 2) (2) Remove the left and right side panels. (See Figure 3, 4) (3) Remove the beam. (See Photo 1) (4) Remove the electrical cover. (See Photo 1) (5) Pull the electrical box downward. (See Photo 2) (6) (Wireless remote controller receiver type only) Disconnect the connector CNB from the PCB for wire-

less remote controller and remove the clamp and strap

for wires. (7) Remove 8 screws from the under panel. (8) Move the under panel forward by about 10mm and

remove the under panel.

7. Removing the vane motor

(1) Remove the air intake. (See Figure 1, 2) (2) Remove the right side panel. (See Figure 3, 4) (3) Remove the connector of vane motor. (4) Remove 2 screws of vane motor cover , then remove

vane motor.

Photo 13

Screws

Connector

Vane motor and cover

Photo 14

Under panel fixing screws

9. Removing the drain pan

(1) Remove the air intake grille. (See Figure 1,2) (2) Remove the side panel (right and left). (See Figure 3, 4) (3) Remove the under panel. (See Photo 14) Remove the screws of the right and left side drain pan. (See Photo 15) (4) Remove 2 insulation in centre of the drain pan, and after

removing 2 screws with washer, remove the drain pan. (See Photo 16,17)

(Note)

Please be aware that there might be some drainage left in the drain pan when you remove the drain pan.

Photo 15

Drain pan fixing screws (left and right each 1 screw)

Drain pan

Vane

Insulations

Screw with washer (2 locations)

Photo 16

Photo 17

Pipe cover fixing screws

OCH491B

Page 45

OPERATING PROCEDURE

PHOTOS & ILLUSTRATIONS

12. Removing the Auto vane

(1) Remove the intake grille. (See Figure 1, 2) (2) Remove the right side panel. (See Figure 3, 4) (3) Remove the vane motor and cover. (See Photo 13) (4) Slide the auto vane to the vane motor side. (5) Remove 2 axes from each vane support pushing the

vane support to the vane sleeve side.

11. Removing the guide vane

(1) Remove the intake grille. (See Figure 1, 2) (2) Remove the side panel (right and left). (See Figure 3, 4) (3) Remove the under panel. (See Photo 14) (4) Remove the drain pan. (See Photo 15,16,17) (5) Remove the screw from the guide vane, then remove

the guide vane.

10. Removing the thermistors/Liquid pipe (TH2) and condenser/evaporator (TH5)

(1) Remove the air intake grille. (See Figure 1, 2) (2) Remove the left and right side panels. (See Figure 3,4) (3) Remove the under panel. (See Photo 14) (4) Remove the drain pan. (See Photo 15, 16, 17) (5) Disconnect the connector CN44 (white) from the indoor

controller board.

(6) Remove 6 screws from the pipe cover and remove the

pipe cover. (See Photo 15, 18)

(7)

Remove the fastener for wires and remove the thermistors

(TH2 and TH5) from each holder. (See Photo 19)

Photo 18

Condenser/evaporator tepmertature thermistor (TH5)

Pipe cover

Pipe cover fixing screws

Pipe cover fixing screws (See Photo 15)

Fastener

Photo 20

Photo 19

Screw

Guide vane

Drain pan

Photo 21

Vane support Vane

Vane sleeve

Vane motor side

Liquid pipe temperature thermistor (TH2)

OCH491B

Page 46

OPERATING PROCEDURE

PHOTOS & ILLUSTRATIONS

13. Removing the heat exchanger

(1) Remove the air intake grille. (See Figure 1, 2) (2) Remove the beam. (See Photo 1) (3) Remove the electrical cover. (See Photo 1) (4) Pull the electrical box downward. (See Photo 2) (5) Remove the left and right side panels. (See Figure 3) (6) Remove the under panel. (See Photo 14) (7) Remove the drain pan. (See Photo 15,16,17) (8) Remove the pipe cover. (See Photo 18) (9) Remove the pipe thermistors (TH2 and TH5) from each

holder. (See Photo 19)

(10) Remove the pipe band fixing screw and remove the

pipe band. (See Photo 22)

(11) Remove 2 screws from the heat exchanger and

remove the heat exchanger.

Photo 22

Pipe band fixing screw

Pipe band

Heat exchanger

fixing screws

Heat exchanger Vane

Photo 23

Heat exchanger

CCopyright 2010 MITSUBISHI ELECTRIC CORPORATION Distributed in Oct. 2012 No.OCH491 REVISED EDITION-B Distributed in Feb. 2012 No.OCH491 REVISED EDITION-A Distributed in Dec. 2010 No.OCH491 Made in Japan

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

New publication, effective Oct. 2012 Specifications are subject to change without notice.

Mitsubishi PCA-RP71KAQ, PCA-RP50KAQR, PCA-RP100KAQ, PCA-RP71KAQR1, PCA-RP140KAQ Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual