SERVICE MANUAL. June 2007 SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS SPLIT-TYPE, AIR CONDITIONERS. No. OC370 REVISED EDITION-B. Indoor unit CONTENTS

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1 SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS SPLIT-TYPE, AIR CONDITIONERS SERVICE MANUAL June 007 No. OC70 REVISED EDITION-B Indoor unit [Model names] [Service Ref.] PLA-AAA PLA-AAA PLA-AAA PLA-A8AA PLA-A8AA PLA-A8AA PLA-AAA PLA-AAA PLA-AAA PLA-A0AA PLA-A0AA PLA-A0AA PLA-A6AA PLA-A6AA PLA-A6AA PLA-AAA PLA-AAA PLA-AAA Revision: WIRIN DIARAM has been changed in REVISED EDI- TION-B. Some descriptions have been modified. Please void OC70 REVISED EDITION-A. NOTE: This manual describes only service data of the indoor units. RoHS compliant products have <> mark on the spec name plate. For servicing RoHS compliant products, refer to the RoHS PARTS LIST. CONTENTS Model name indication ON/OFF TEMP INDOOR UNIT TEMP. ON/OFF. TECHNICAL CHANES. REFERENCE MANUAL. SAFETY PRECAUTION. PART NAMES AND FUNCTIONS. SPECIFICATIONS 8 6. NOISE CRITERION CURVES 0 7. OUTLINES AND DIMENSIONS 8. WIRIN DIARAM 9. REFRIERANT SYSTEM DIARAM 0. TROUBLESHOOTIN. DISASSEMBLY PROCEDURE 0. PARTS LIST. RoHS PARTS LIST 8 WIRELESS REMOTE CONTROLLER WIRED REMOTE CONTROLLER

2 TECHNICAL CHANES PLA-AAA PLA-AAA PLA-A8AA PLA-A8AA PLA-AAA PLA-AAA PLA-A0AA PLA-A0AA PLA-A6AA PLA-A6AA PLA-AAA PLA-AAA Indoor controller board has been changed. REFERENCE MANUAL -. OUTDOOR UNIT SERVICE MANUAL Service Ref. PUZ-A8//0/6/NHA PUZ-A8//0/6/NHA-BS PUY-A/8//0/6/NHA() PUY-A/8//0/6/NHA()-BS Service Manual No. OC67 -. TECHNICAL DATA BOOK Series (Outdoor unit) PUZ-A NHA(-BS) PUY-A NHA(-BS) Manual No. OCS0

3 SAFETY PRECAUTION -. ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminals, all supply circuits must be disconnected. -. CAUTIONS RELATED TO NEW REFRIERANT Cautions for units utilising refrigerant R0A Use new refrigerant pipes. Make sure that the inside and outside of refrigerant piping is clean and it has no contamination such as sulfur hazardous for use, oxides, dirt, shaving particles, etc. In addition, use pipes with specified thickness. Contamination inside refrigerant piping can cause deterioration of refrigerant oil etc. Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before brazing. (Leave elbow joints, etc. in their packaging.) If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor. Use ester oil, ether oil or alkylbenzene oil (small amount) as the refrigerant oil applied to flares and flange connections. If large amount of mineral oil enters, that can cause deterioration of refrigerant oil etc. 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 R0A. If other refrigerant (R 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 R0A refrigerant. The following tools are necessary to use R0A refrigerant. Tools for R0A auge manifold Flare tool Charge hose Size adjustment gauge as leak detector Vacuum pump adaptor Torque wrench Electronic refrigerant charging scale Keep the 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. Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a flame, poisonous gases will be released. [] Cautions for service () Perform service after collecting the refrigerant left in the unit completely. () Do not release refrigerant in the air. () After completing service, charge the cycle with specified amount of refrigerant. () When performing service, install a filter drier simultaneously. Be sure to use a filter drier for new refrigerant.

4 [] Additional refrigerant charge When charging directly from cylinder Check that cylinder for R0A on the market is syphon type. Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.) Unit ravimeter [] Service tools Use the below service tools as exclusive tools for R0A refrigerant. No. Specifications auge manifold Only for R0A Use the existing fitting specifications. (UNF/) Use high-tension side pressure of.mpa or over. Charge hose Only for R0A Use pressure performance of.09mpa or over. Electronic scale as leak detector Use the detector for Ra, R07C or R0A. Adaptor for reverse flow check Attach on vacuum pump. 6 Refrigerant charge base 7 Refrigerant cylinder Only for R0A Top of cylinder (Pink) Cylinder with syphon 8 Refrigerant recovery equipment

5 PART NAMES AND FUNCTIONS Indoor Unit Horizontal Air Outlet Sets horizontal airflow automatically during cooling or dehumidifying. Filter Removes dust and pollutants from intake air. rille Auto Air Swing Vane Disperses airflow up and down and adjusts the angle of airflow direction. Air Intake Intakes air from room. Wired remote controller Operation Section Temperature setting buttons ON/OFF button Down Up Fan Speed button Timer Menu button (Monitor/Set button) Mode button (Return button) Filter button (<Enter> button) TEMP. ON/OFF Test Run button Set Time buttons Check button (Clear button) Back MENU ON/OFF FILTER Ahead Timer On/Off button (Set Day button) BACK PAR-MAA MONITOR/SET DAY CLOCK OPERATION CHECK TEST CLEAR Airflow Up/Down button Louver button ( Operation button) Opening the lid To return operation number Ventilation button ( Operation button) Built-in temperature sensor To go to next operation number

6 Wired remote controller Display Section For purposes of this explanation, all parts of the display are shown as lit. During actual operation, only the relevant items will be lit. Identifies the current operation Shows the operating mode, etc. *Multilanguage display is 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. F C TIME SUN MON TUE WED THU FRI SAT TIMER Hr ON AFTER AFTER OFF ERROR CODE F C ONLYHr. Up/Down Air Direction indicator Shows the direction of the outcoming airflow. One Hour Only indicator Displayed if the airflow is set to Low or downward during COOL or DRY mode. (Operation varies according to model.) The indicator goes off in one hour, at which time the airflow direction also changes. FUNCTION FILTER WEEKLY SIMPLE AUTO OFF Room Temperature display Shows the room temperature. The room temperature display range is 6 0 F. The display blinks if the temperature is less than 6 F or 0 F 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. Sensor indication Displayed 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. Fan Speed indicator Shows the selected fan speed. Ventilation indicator Appears when the unit is running in Ventilation mode. Note: PLEASE WAIT message This message is displayed for approximately minutes when power is supplied to the indoor unit or when the unit is recovering from a power failure. NOT AVAILABLE message This message is displayed if an invalid button is pressed (to operate a function that the indoor unit does not have). If a single remote controller is used to operate multiple indoor units simultaneously that are different types, this message will not be displayed as far as any of the indoor units is equipped with the function. 6

7 Wireless remote controller CHECK TEST RUN display Indicate that the unit is being checked or test-run. MODEL SELECT display Blinks when model is selected. display Lights up while the signal is transmitted to the indoor unit when the button is pressed. Temperature setting display indicates the desired temperature setting which is set. OPERATION MODE display OPERATION MODE display Indicates which operation mode is in effect. display The vertical direction of air flow is indicated. display Displays selected fan speed. ON/OFF button The unit is turned ON and OFF alternately each time the button is pressed. FAN SPEED SELECT button Changes the fan speed. MODE SELECT button Switches the operation mode between COOLIN/DRY/FAN/HEATIN and AUTO mode. win case the outdoor unit is cooling only type, the heating and auto mode are not available. CHECK-TEST RUN button Performs an inspection check or test operation. Do not use it for normal operation. VANE CONTROL button Changes the air flow direction. COOL DRY ON/OFF TEMP MODE CHECK TEST RUN SET CHECK MODEL SELECT AUTO FAN FAN HEAT NOT AVAILABLE FAN VANE LOUVER RESET TEST RUN F C STOP AMPM SWIN START AMPM CLOCK AUTO STOP AUTO START h min CLOCK display Displays the current time. TIMER display Displays when in timer operation or when setting timer. display Displays the order of timer operation. display Displays whether timer is on or off. button Sets any desired room temperature. TIMER CONTROL buttons AUTO STOP (OFF timer): when this switch is set, the air conditioner will be automatically stopped at the preset time. AUTO START (ON timer): when this switch is set, the air conditioner will be automatically started at the preset time. "h" and "min" buttons Buttons used to set the hour and minute of the current time and timer settings. LOUVER button Changes left / right airflow direction. (Not available for this model.) CLOCK button RESET button SET button 7

8 SPECIFICATIONS INDOOR UNIT Service Ref. Power supply (phase, cycle, voltage) Max. Fuse Size Min. Circuit Ampacity External finish (Panel) Heat exchanger Fan Fan (drive) o No. Fan motor output Fan motor Airflow (Low-Medium-Medium-High) External static pressure Booster heater Operation control & Thermostat Noise level (Low-Medium-Medium-High) Field drain pipe O.D. Dimensions Weight W D H A A kw F.L.A. K/min(CFM) Pa(mmAq) kw db kg(lbs) PLA-AAA/ PLA-AAA Single phase,60hz, 08/0V Munsell 0.70Y 8.9/0.97 Plate fin coil Turbo fan (direct) o Dry: ---( ) Wet: 0---( ) 0(direct blow) Remote controller & built-in (-/) UNIT : 80 (-/6) PANEL : 90 (7-/8) UNIT : 80 (-/6) PANEL : 90 (7-/8) UNIT : 8 (0-/6) PANEL : 0 (-/6) UNIT : (9) PANEL: () INDOOR UNIT Service Ref. Power supply (phase, cycle, voltage) Max. Fuse Size Min. Circuit Ampacity External finish (Panel) Heat exchanger Fan Fan (drive) o No. Fan motor output Fan motor Airflow (Low-Medium-Medium-High) External static pressure Booster heater Operation control & Thermostat Noise level (Low-Medium-Medium-High) Field drain pipe O.D. Dimensions Weight W D H A A kw F.L.A. K/min(CFM) Pa(mmAq) kw db kg(lbs) PLA-A8AA/ PLA-A8AA Single phase,60hz, 08/0V Munsell 0.70Y 8.9/0.97 Plate fin coil Turbo fan (direct) o Dry: ( ) Wet:--7-9( ) 0(direct blow) Remote controller & built-in (-/) UNIT : 80 (-/6) PANEL : 90 (7-/8) UNIT : 80 (-/6) PANEL : 90 (7-/8) UNIT : 8 (0-/6) PANEL : 0 (-/6) UNIT : () PANEL: () INDOOR UNIT Service Ref. Power supply (phase, cycle, voltage) Max. Fuse Size Min. Circuit Ampacity External finish (Panel) Heat exchanger Fan Fan (drive) o No. Fan motor output Fan motor Airflow (Low-Medium-Medium-High) External static pressure Booster heater Operation control & Thermostat Noise level (Low-Medium-Medium-High) Field drain pipe O.D. Dimensions Weight W D H A A kw F.L.A. K/min(CFM) Pa(mmAq) kw db kg(lbs) PLA-AAA/ PLA-AAA Single phase,60hz, 08/0V Munsell 0.70Y 8.9/0.97 Plate fin coil Turbo fan (direct) o Dry: ( ) Wet: --7-9( ) 0(direct blow) Remote controller & built-in (-/) UNIT : 80 (-/6) PANEL : 90 (7-/8) UNIT : 80 (-/6) PANEL : 90 (7-/8) UNIT : 8 (0-/6) PANEL : 0 (-/6) UNIT : () PANEL: () 8

9 INDOOR UNIT Service Ref. Power supply (phase, cycle, voltage) Max. Fuse Size Min. Circuit Ampacity External finish (Panel) Heat exchanger Fan Fan (drive) o No. Fan motor output Fan motor Airflow (Low-Medium-Medium-High) External static pressure Booster heater Operation control & Thermostat Noise level (Low-Medium-Medium-High) Field drain pipe O.D. Dimensions Weight W D H A A kw F.L.A. K/min(CFM) Pa(mmAq) kw db kg(lbs) PLA-A0AA/ PLA-A0AA Single phase,60hz, 08/0V Munsell 0.70Y 8.9/0.97 Plate fin coil Turbo fan (direct) o Dry: ( ) Wet: --7-9( ) 0(direct blow) Remote controller & built-in (-/) UNIT : 80 (-/6) PANEL : 90 (7-/8) UNIT : 80 (-/6) PANEL : 90 (7-/8) UNIT : 8 (0-/6) PANEL : 0 (-/6) UNIT : () PANEL: () INDOOR UNIT Service Ref. Power supply (phase, cycle, voltage) Max. Fuse Size Min. Circuit Ampacity External finish (Panel) Heat exchanger Fan Fan (drive) o No. Fan motor output Fan motor Airflow (Low-Medium-Medium-High) External static pressure Booster heater Operation control & Thermostat Noise level (Low-Medium-Medium-High) Field drain pipe O.D. Dimensions Weight W D H A A kw F.L.A. K/min(CFM) Pa(mmAq) kw db kg(lbs) PLA-A6AA/ PLA-A6AA Single phase,60hz, 08/0V Munsell 0.70Y 8.9/0.97 Plate fin coil Turbo fan (direct) o 0.0. Dry: ( ) Wet: 9---7( ) 0(direct blow) Remote controller & built-in (-/) UNIT : 80 (-/6) PANEL : 90 (7-/8) UNIT : 80 (-/6) PANEL : 90 (7-/8) UNIT : 98 (-/) PANEL : 0 (-/6) UNIT : 0 (66) PANEL : () INDOOR UNIT Service Ref. Power supply (phase, cycle, voltage) Max. Fuse Size Min. Circuit Ampacity External finish (Panel) Heat exchanger Fan Fan (drive) o No. Fan motor output Fan motor Airflow (Low-Medium-Medium-High) External static pressure Booster heater Operation control & Thermostat Noise level (Low-Medium-Medium-High) Field drain pipe O.D. Dimensions Weight W D H A A kw F.L.A. K/min(CFM) Pa(mmAq) kw db kg(lbs) PLA-AAA/ PLA-AAA Single phase,60hz, 08/0V Munsell 0.70Y 8.9/0.97 Plate fin coil Turbo fan (direct) o 0.0. Dry: ( ) Wet: 9---7( ) 0(direct blow) Remote controller & built-in (-/) UNIT : 80 (-/6) PANEL : 90 (7-/8) UNIT : 80 (-/6) PANEL : 90 (7-/8) UNIT : 98 (-/) PANEL : 0 (-/6) UNIT : 0 (66) PANEL : () 9

10 6 NOISE CRITERION CURVES PLA-AAA PLA-AAA NOTCH SPL(dB) LINE High Medium Medium Low PLA-A8AA PLA-A8AA PLA-AAA PLA-AAA PLA-A0AA PLA-A0AA NOTCH SPL(dB) LINE High Medium Medium Low OCTAVE BAND SOUND PRESSURE LEVEL, db (0 db = µbar) APPROXIMATE THRESHOLD OF HEARIN FOR CONTINUOUS NOISE NC-70 NC-60 NC-0 NC-0 NC-0 NC-0 OCTAVE BAND SOUND PRESSURE LEVEL, db (0 db = µbar) APPROXIMATE THRESHOLD OF HEARIN FOR CONTINUOUS NOISE NC-70 NC-60 NC-0 NC-0 NC-0 NC-0 BAND CENTER FREQUENCIES, Hz BAND CENTER FREQUENCIES, Hz PLA-A6AA PLA-AAA PLA-A6AA PLA-AAA NOTCH SPL(dB) LINE High Medium Medium Low OCTAVE BAND SOUND PRESSURE LEVEL, db (0 db = µbar) APPROXIMATE THRESHOLD OF HEARIN FOR CONTINUOUS NOISE NC-70 NC-60 NC-0 NC-0 NC-0 NC-0 CEILIN ft MICROPHONE UNIT BAND CENTER FREQUENCIES, Hz 0

11 7 OUTLINES AND DIMENSIONS INDOOR UNIT PLA-AAA PLA-A8AA PLA-AAA PLA-A0AA PLA-A6AA PLA-AAA PLA-AAA PLA-A8AA PLA-AAA PLA-A0AA PLA-A6AA PLA-AAA Unit : inch(mm) /~-/(0~) Fresh air intake Ceiling hole -7/~-/6(860~90) -7/8(80) 6-/(9) Suspension bolt pitch /~-/(0~) (0~) /~-/ Branch duct hole -/6(00) -/6(00) (Cut out hole) -7/(90) -7/(90) -/6(00) -/8(0) 6-/() 6-9/6(67) -/6(80) 6-/(9) Branch duct hole 7-9/6(9) -7/(98) C D Terminal block (6) 6-/(9) -/6(60) Suspension bolt pitch -7/~-/6(860~90) Ceiling hole [6-7/8([7) -/(0) -[/8([.8) Burring hole Branch duct hole [-9/([0) Detail drawing of fresh air intake -[/8([.8) Burring hole 6-/6(70) Suspension bolt -/6(80) W/8(M0) Feeding hole (Drain pump) -/8(60) -/(86) -/(7) -[-/6(7) -/(0) Suspension bolt lower edge (0~70) -/~-/ -/(7) -/() 7-/(97) Wiring entrance holes Air intake grille 9-/(8) -/(77) Air intake hole rille 6-/(9) -/8(0) Ceiling surface 7-/(90) A +/6 + /6 (7 0 ) 0 -/6(0) B (0~) /~-/ Drain pipe O.D.[-/([) connection (VP-) 6-7/(8) [-9/([) [-/6([00) (Cut out hole) Ceiling surface -/6() +/6 + /6 0 (7 0 ) M Drain hole High efficiency filter & Fresh air intake casement(option) M Auto vane 7-/8(90) -/(77) 6-/6() () Air outlet hole M 6-/6() Air outlet hole 7-/8(90) M -/(77) Air intake hole Vane motor () -/(77) Models PLA-A/8//0AA() PLA-A6AA() PLA-AAA() MODEL A 9-/ () /8 B 0-/6 (8) -/6 -/ (8) (98) Unit : inch(mm) C -/ (89) /0/6/ D -/ (80) -/6 (8) Liquid pipe /F /8F as pipe /F /8F

12 8 WIRIN DIARAM PLA-AAA PLA-A8AA PLA-AAA PLA-A0AA PLA-A6AA PLA-AAA PLA-AAA PLA-A8AA PLA-AAA PLA-A0AA PLA-A6AA PLA-AAA [LEEND] SYMBOL NAME SYMBOL NAME SYMBOL NAME P.B INDOOR POWER BOARD C CAPACITOR<FAN MOTOR> W.B WIRELESS REMOTE CONTROLLER BOARD I.B INDOOR CONTROLLER BOARD DP DRAIN-UP MACHINE BZ BUZZER BCR FAN CONTROL ELEMENT DS DRAIN SENSOR LED LED<RUN INDICATOR > CNL CONNECTOR<LOSSNAY> H DEW PREVENTION HEATER LED LED<HOT ADJUST> CN CONNECTOR<REMOTE SWITCH> MF FAN MOTOR RU RECEIVIN UNIT CN CONNECTOR<HA TERMINAL-A> MV VANE MOTOR SW SWITCH<HEATIN ON/OFF> CN CONNECTOR<CENTRALLY CONTROL> R.B WIRED REMOTE CONTROLLER BOARD SW SWITCH<COOLIN ON/OFF> FUSE FUSE (6.A/0V) TB TERMINAL BLOCK<INDOOR/OUTDOOR LED POWER SUPPLY<I.B> CONNECTIN LINE> LED POWER SUPPLY<R.B> TB,TB6 TERMINAL BLOCK<REMOTE CONTROLLER LED TRANSMISSION<INDOOR-OUTDOOR> TRANSMISSION LINE > Please set the voltage using the SW SWITCH <MODEL SELECTION>wSee Table. TH ROOM TEMP.THERMISTOR remote controller. SW SWITCH <CAPACITY CODE>wSee Table. < F/kΩ, 77 F/.kΩ DETECT> For the setting method, please refer to SWE SWITCH<EMERENCY OPERATION> TH PIPE TEMP.THERMISTOR/LIQUID the indoor unit Installation Manual. X RELAY<DRAIN PUMP> < F/kΩ, 77 F/.kΩ DETECT> X RELAY<FAN MOTOR> TH COND./EVA.TEMP.THERMISTOR ZNR VARISTOR < F/kΩ, 77 F/.kΩ DETECT> RILLE MF C MV DP MV MV MV H CNS (WHT) DC.V P.B CNSK (RED) YLW ORN YLW ORN BRN TB w S S S TO OUTDOOR UNIT I.B RED WHT BLK FAN (WHT) BCR D.U.M CNP (BLU) X X X YLW YLW YLW YLW D.HEATER CNC (RED) X POWER CNDK (RED) RED WHT YLW ORN CN BLK WHT CN BRN ORN POWER VANE CND POWER A-CONTROL CN6V (ORN) CND CNC (RN) (WHT) (BLU) FUSE ZNR CNL W.B SWE SW SW ON OFF Refer to tables and for service PCB. HEATER CN (YLW) DS LED LED LED D.SENSOR CN (WHT) TH TH TH INTAKE CN0 (RED) LIQUID PIPE CN CN9 (WHT) (BLK) REMOCON CN (BLU) BLU BLU CN WIRELESS CN90 (WHT) BZ 9 CNB TB TRANSMISSION WIRES DCV LED SW LED SW RU TB6 R.B Table SW MODELS Service board PLA-A,AA ON OFF NOTES:. Symbols used in wiring diagram above are, : Connector, : Terminal (block).. Indoor and outdoor connecting wires have polarities, make sure to match terminal numbers (S, S, S) for correct wirings.. Since the outdoor side electric wiring may change, be sure to check the outdoor unit electric wiring diagram for servicing.. This diagram shows the wiring of Indoor and Outdoor connecting wires (specification of 0V), adopting superimposed system of power and signal. w. Use copper supply wires. Table MODELS PLA-AAA PLA-A8AA PLA-AAA SW Service board MODELS ON PLA-A0AA OFF ON OFF ON OFF PLA-A6AA PLA-AAA Service board ON OFF ON OFF ON OFF [Self-diagnosis]. For details on how to operate self-diagnosis with the wireless remote control, refer to the technical manuals etc.. For the wired remote control : When you quickly press twice the CHECK switch on the remote control, the unit begins self-diagnosis, and Check Codes generated in the past appear on the display. For check Codes and Symptoms refer to the table below. Check code Symptom Check code Symptom P Abnormality of room temperature thermistor(th) E0-E Abnormality of the signal transmission between remote P Abnormality of pipe temperature thermistor / Liquid(TH) controller and indoor unit P Abnormality of drain sensor(ds) E6-EF Abnormality of the signal transmission between indoor unit and outdoor unit P Malfunction of drain-up machine Fb Abnormality of indoor controller board P6 Freezing / overheating protection is working. U*, F* Abnormality in outdoor unit. Refer to outdoor unit wiring diagram. P8 Abnormality of pipe temperature No trouble generated in the past P9 Abnormality of pipe temperature thermistor / Cond. / Eva.(TH) FFFF No corresponding unit

13 9 REFRIERANT SYSTEM DIARAM PLA-AAA PLA-A8AA PLA-AAA PLA-A0AA PLA-A6AA PLA-AAA PLA-AAA PLA-A8AA PLA-AAA PLA-A0AA PLA-A6AA PLA-AAA Heat exchanger Strainer (#0) Refrigerant AS pipe connection (Flare) Thermistor TH (Cond./ Eva. temperature) Refrigerant flow in cooling Refrigerant flow in heating Thermistor TH (Room temperature) Distributor with strainer (#0) Thermistor TH Pipe temperature (Liquid) Refrigerant LIQUID pipe connection (Flare) Strainer (#0)

14 0 TROUBLESHOOTIN 0-. TROUBLESHOOTIN <Error code display by self-diagnosis and actions to be taken for service (summary)> 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 inferior phenomenon reoccurrence at field are summarized in the table below. Check the contents below before investigating details. Unit conditions at service Error code Actions to be taken for service (summary) The inferior phenomenon is reoccurring. The inferior phenomenon is not reoccurring. Displayed Not displayed Logged Not logged Judge what is wrong and take a corrective action according to SELF-DIANOSIS ACTION TABLE (0-). Identify the cause of the inferior phenomenon and take a corrective action according to TROUBLESHOOTIN BY INFERIOR PHENOMENA (0-). 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 inferior phenomenon occurred, and wiring related. Reset error code logs and restart the unit after finishing service. There is no abnormality in electrical components, controller boards, and remote controller. Recheck the abnormal symptom. Identify the cause of the inferior phenomenon and take a corrective action according to TROUBLESHOOTIN BY INFERIOR PHENOMENA (0-). Continue to operate unit for the time being if the cause is not ascertained. There is no abnormality in electrical components, controller boards, remote controller etc.

15 0-. MALFUNCTION-DIANOSIS METHOD BY REMOTE CONTROLLER <In case of trouble during operation> When a malfunction occurs to the air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop. <Malfunction-diagnosis method at maintenance service> CHECK display CHECK Refrigerant address display [Procedure]. Press the CHECK button twice. "CHECK" lights, and refrigerant address "00" blinks. Check that the remote controller's display has stopped before continuing. ON/OFF button ON/OFF TEMP FAN AUTO STOP Temperature button. Press the temperature buttons. Select the refrigerant address of the indoor unit for the self-diagnosis. Note: Set refrigerant address using the outdoor unit s DIP switch (SW). (For more information, see the outdoor unit installation manual.) CHECK button MODE CHECK TEST RUN SET VANE AUTO START LOUVER h RESET CLOCK min HOUR button. Point the remote controller at the sensor on the indoor unit and press the HOUR button. 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 seconds at most for error code to appear.). Point the remote controller at the sensor on the indoor unit and press the ON/OFF button. The check mode is cancelled. To be continued to the next page.

16 Refer to the following tables for details on the check codes. [Output pattern A] Beeper sounds OPERATION INDICATOR lamp blinking pattern Self-check starts (Start signal received) [Output pattern B] Only A-CONTROL Beeper sounds OPERATION INDICATOR lamp blinking pattern Beep Beep Beep Beep Beep Beep Beep st nd rd n th st nd Repeated Beep Beep Beep Beep Beep Beep Beep Self-check starts (Start signal received) Off On On On Approx.. sec. 0. sec. 0. sec. 0. sec. Off Approx.. sec. On Approx. sec. st nd rd n th st nd On 0. sec. On 0. sec. Number of blinks/beeps in pattern indicates the check code in the following table (i.e., n= for P ) Off On Approx.. sec. 0. sec. On On 0. sec. 0. sec. [Output pattern A] Errors detected by indoor unit Wireless remote controller Wired remote controller Beeper sounds/operation INDICATOR lamp blinks Check code Symptom (Number of times) P Intake sensor error P Pipe (TH) sensor error P9 Pipe (TH) sensor error E6,E7 Indoor/outdoor unit communication error P Drain sensor error P Drain pump error PA Forced compressor stop 6 P6 Freezing/Overheating protection operation 7 EE Communication error between indoor and outdoor units 8 P8 Pipe temperature error 9 E, E Remote controller signal receiving error 0 Fb Indoor unit control system error (memory error, etc.) E0, E Remote controller transmission error E, E Remote controller control board error [Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.) Wireless remote controller Wired remote controller Beeper sounds/operation INDICATOR lamp blinks Check code Symptom (Number of times) E9 Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit) UP Compressor overcurrent interruption U,U Open/short of outdoor unit thermistors UF Compressor overcurrent interruption (When compressor locked) U Abnormal high discharging temperature/9c worked/ insufficient refrigerant 6 U,Ud Abnormal high pressure (6H worked)/overheating protection operation 7 U Abnormal temperature of heatsink 8 U8 Outdoor unit fan protection stop 9 U6 Compressor overcurrent interruption/abnormal of power module 0 U7 Abnormality of superheat due to low discharge temperature U9,UH Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit/current sensor error Others Other errors (Refer to the technical manual for the outdoor unit.) * If the beeper does not sound again after the initial beeps to confirm the self-check start signal was received and the OPERATION INDICATOR lamp does not come on, there are no error records. * If the beeper sounds times continuously beep, beep, beep ( sec.) after the initial beeps to confirm the self-check start signal was received, the specified refrigerant address is incorrect. 6 On 0. sec. On 0. sec. Off Approx.. sec. Number of blinks/beeps in pattern indicates the check code in the following table (i.e., n= for U ) Number of blinks/beeps in pattern indicates the check code in the following table On Approx. sec. On 0. sec. On 0. sec. Repeated Number of blinks/beeps in pattern indicates the check code in the following table Remark Remark As for outdoor unit, refer to outdoor unit's service manual. For details, check the LED display of the outdoor controller board.

17 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. If the unit cannot be operated properly after the test run has been performed, refer to the following table to find out the cause. Symptom Cause Wired remote controller LED, (PCB in outdoor unit) For about After LED, are lighted, LED is For about minutes after power-on,operation PLEASE WAIT minutes after turned off, then only LED is of the remote controller is not possible power-on lighted. (Correct operation) due to system start-up. (Correct operation) Connector for the outdoor unit s protection Only LED is lighted. device is not connected. PLEASE WAIT Error code LED, blink. Reverse or open phase wiring for the outdoor unit s power terminal block (L, L, R) Display messages do not appear even when operation switch is turned ON (operation lamp does not light up). Subsequent to about minutes after power-on Only LED is lighted. LED blinks twice, LED blinks once. Incorrect wiring between indoor and outdoor units (incorrect polarity of S, S, S) Remote controller wire short 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. Note: Operation is not possible for about 0 seconds after cancellation of function selection. (Correct operation) For description of each LED (LED,, ) provided on the indoor controller, refer to the following table. LED (power for microcomputer) Indicates whether control power is supplied. Make sure that this LED is always lit. LED (power for remote controller) Indicates whether power is supplied to the remote controller. This LED lights only in the case of the indoor unit which is connected to the outdoor unit refrigerant address 0. LED (communication between indoor and outdoor units) Indicates state of communication between the indoor and outdoor units. Make sure that this LED is always blinking. 7

18 0-. SELF-DIANOSIS ACTION TABLE Error Code Abnormal point and detection method Cause Countermeasure P Room temperature thermistor (TH) The unit is in -minute resume prevention mode if short/open of thermistor is detected. Abnormal if the unit does not reset normally after minutes. (The unit returns to normal operation, if it has been reset normally.) Constantly detected during cooling, drying, and heating operation. Short: 90:(9 F) or more Open: -0:(-0 F) or less Defective thermistor characteristics Contact failure of connector (CN0) on the indoor controller board (Insert failure) Breaking of wire or contact failure of thermistor wiring Defective indoor controller board Check resistance value of thermistor. 0: ( F).0k" 0:(0 F) 9.6k" 0:(68 F) 6.k" 0:(86 F).k" 0:(0 F).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. Check contact failure of connector (CN0) on the indoor controller board. Refer to 0-7. Turn the power on again and check restart after inserting connector again. 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. P P P Pipe temperature thermistor/liquid (TH) The unit is in -minute resume prevention mode if short/open of thermistor is detected. Abnormal if the unit does not reset normally after minutes. (The unit returns to normal operation, if it has been reset normally.) Constantly detected during cooling, drying, and heating (except defrosting) operation. Short: 90:(9 F) or more Open: -0:(-0 F) or less Drain sensor (DS) Suspensive abnormality, if short/open of thermistor is detected for 0 seconds continuously. Turn off compressor and indoor fan. Short/open is detected for 0 seconds continuously during suspensive abnormality. (The unit returns to normal operation, if it has been reset normally.) Detect the following condition. During cooling and drying operation In case that pipe <liquid> temperature - room temperature <-0deg (Except defrosting) When pipe <liquid> temperature or room temperature is short/open temperature. During drain pump operation Malfunction of drain pump (DP) Suspensive abnormality, if thermistor of drain sensor heats itself and temperature rises slightly. Turn off compressor and indoor fan. Drain pump is abnormal if the condition above is detected during suspensive abnormality. Constantly detected during drain pump operation. Defective thermistor characteristics Contact failure of connector (CN) on the indoor controller board (Insert failure) Breaking of wire or contact failure of thermistor wiring Defective refrigerant circuit is causing thermistor temperature of 90:(9 F) or more or -0:(-0 F) or less. Defective indoor controller board Defective thermistor characteristics Contact failure of connector (CN) on the indoor controller board (Insert failure) Breaking of wire or contact failure of drain sensor wiring Defective indoor controller board Malfunction of drain pump Defective drain Clogged drain pump Clogged drain pipe Attached drop of water at the drain sensor Drops of drain trickles from lead wire. Clogged filter is causing wave of drain. Defective indoor controller board 8 Note: Refer to the manual of outdoor unit for the details of display such as F, U, and other E. Check resistance value of thermistor. For characteristics, refer to (P) above. Check contact failure of connector (CN) on the indoor controller board. Refer to 0-7. Turn the power on and check restart after inserting connector again. 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 defect. Check pipe <liquid> temperature with remote controller in test run mode. If there is extreme difference with actual pipe <liquid> temperature, replace indoor controller board. Turn the power off, and on again to operate after check. Check resistance value of thermistor. 0: ( F) 6.0k" 0:(0 F).9k" 0:(68 F).6k" 0:(86 F).8k" 0:(0 F).k" Check contact failure of connector (CN) on the indoor controller board. Refer to 0-7. Turn the power on again and check restart after inserting connector again. Replace indoor controller board if drain pump operates with the line of drain sensor connector CN- and is short-circuited, and abnormality reappears. Turn the power off, and on again to operate after check. Check if drain pump works. Check drain function. Check the setting of lead wire of drain sensor and check clogs of the filter. Replace indoor controller board if drain pump operates with the line of drain sensor connector CN- and is short-circuited and abnormality reappears. Refer to 0-7. Turn the power off, and on again to operate after check.

19 Error Code Abnormal point and detection method Cause Countermeasure Freezing/overheating protection is working Freezing protection (Cooling mode) The unit is in 6-minute resume prevention mode if pipe <liquid or condenser/evaporator> temperature stays under -:( F) for minutes, minutes after the compressor started. Abnormal if it stays under -:( F) for minutes again within 6 minutes after 6-minute resume prevention mode. (Cooling or drying mode) Clogged filter (reduced airflow) Short cycle of air path Low-load (low temperature) operation out of the tolerance range Defective indoor fan motor Fan motor is defective. Indoor controller board is defective. Defective outdoor fan control 6 Overcharge of refrigerant 7 Defective refrigerant circuit (clogs) (Cooling or drying mode) Check clogs of the filter. Remove shields. Measure the resistance of fan motor's winding. Measure the output voltage of fan's connector (FAN) on the indoor controller board. WThe indoor controller board should be normal when voltage of AC 08/0V is detected while fan motor is connected. Refer to 0-7. Check outdoor fan motor. 67 Check operating condition of refrigerant circuit. P6 P8 Overheating protection (Heating mode) The units is in 6-minute resume prevention mode if pipe <condenser / evaporator> temperature is detected as over 70:(8 F) after the compressor started. Abnormal if the temperature of over 70:(8 F) is detected again within 0 minutes after 6-minute resume prevention mode. Pipe temperature <Cooling mode> Detected as abnormal when the pipe temperature is not in the cooling range minutes after compressor start and 6 minutes after the liquid or condenser/evaporator pipe is out of cooling range. Note ) It takes at least 9 minutes to detect. Note ) Abnormality P8 is not detected in drying mode. Cooling range:- deg C[-.deg F]](TH-TH) TH: Lower temperature between liquid pipe temperature (TH) and condenser/evaporator temperature (TH) TH: Intake temperature <Heating mode> When 0 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 0 minutes. (Heating mode) Clogged filter (reduced airflow) Short cycle of air path Overload (high temperature) operation beyond the tolerance range Defective indoor fan motor Fan motor is defective. Indoor controller board is defective. Defective outdoor fan control 6 Overcharge of refrigerant 7 Defective refrigerant circuit (clogs) 8 Bypass circuit of outdoor unit is defective. 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 Converse connection of extension pipe (on plural units connection) Converse wiring of indoor/ outdoor unit connecting wire (on plural units connection) Defective detection of indoor room temperature and pipe <condenser / evaporator> temperature thermistor Stop valve is not opened completely. (Heating mode) Check clogs of the filter. Remove shields. Measure the resistance of fan motor's winding. Measure the output voltage of fan's connector (FAN) on the indoor controller board. WThe indoor controller board should be normal when voltage of AC 08/0V is detected while fan motor is connected. Refer to 0-7. Check outdoor fan motor. 6~8Check operating condition of refrigerant circuit. ~ Check pipe <liquid or condenser / evaporator> temperature with room temperature display on remote controller and outdoor controller circuit board. Pipe <liquid or condenser / evaporator> temperature display is indicated by setting SW of outdoor controller circuit board as follows. Conduct temperature check with outdoor ( controller circuit board after connecting A-Control Service Tool(PAC-SKST). ) Check converse connection of extension pipe or converse wiring of indoor/outdoor unit connecting wire. Note ) It takes at least 7 minutes to detect abnormality. Note ) It excludes the period of defrosting (Detection restarts when defrosting mode is over) Heating range: deg C[.deg F][(TH-TH) 9

20 Error Code Abnormal point and detection method Cause Countermeasure P9 E0 or E E or E Pipe temperature thermistor / Condenser-Evaporator (TH) The unit is in -minute resume protection mode if short/open of thermistor is detected. Abnormal if the unit does not get back to normal within minutes. (The unit returns to normal operation, if it has been reset normally.) Constantly detected during cooling, drying, and heating operation (except defrosting) Short: 90:(9 F) or more Open: -0:(-0 F) or less Remote controller transmission error(e0)/signal receiving error(e) Abnormal if main or sub remote controller cannot receive any transmission normally from indoor unit of refrigerant address 0 for minutes. (Error code : E0) Abnormal if sub-remote controller could not receive for any signal for minutes. (Error code: E0) Abnormal if indoor controller board can not receive any data from remote controller board or normally from other indoor controller board for minutes. (Error code: E) Indoor controller board cannot receive any signal from remote controller for minutes. (Error code: E) Remote controller transmission error(e)/signal receiving error(e) Abnormal if remote controller could not find blank of transmission path for 6 seconds and could not transmit. (Error code: E) Remote controller receives transmitted data at the same time, compares the data, and when detecting it, judges different data to be abnormal 0 continuous times. (Error code: E) Abnormal if indoor controller board could not find blank of transmission path. (Error code: E) Indoor controller board receives transmitted data at the same time, compares the data,and when detecting it, judges different data to be abnormal 0 continuous times. (Error code: E) Defective thermistor characteristics Contact failure of connector (CN9) on the indoor controller board (Insert failure) Breaking of wire or contact failure of thermistor wiring Temperature of thermistor is 90:(9 F) or more or -0: (-0 F) or less caused by defective refrigerant circuit. Defective indoor controller board Contact failure at transmission wire of remote controller All remote controllers are set as sub remote controller. In this case, E0 is displayed on remote controller, and E is displayed at LED (LED, LED) on the outdoor controller circuit board. Miswiring of remote controller Defective transmitting receiving circuit of remote controller Defective transmitting receiving circuit of indoor controller board of refrigerant address 0 6 Noise has entered into the transmission wire of remote controller. remote controller are set as main. (In case of remote controllers) Remote controller is connected with indoor units or more. Repetition of refrigerant address Defective transmitting receiving circuit of remote controller Defective transmitting receiving circuit of indoor controller board 6 Noise has entered into transmission wire of remote controller. Check resistance value of thermistor. For characteristics, refer to (P) above. Check contact failure of connector (CN9) on the indoor controller board. Refer to 0-7. Turn the power on and check restart after inserting connector again. 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. Operate in test run mode and check pipe <condenser / evaporator> temperature with outdoor control circuit board. If there is exclusive 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. In case of checking pipe temperature ( ) with outdoor controller circuit board, be sure to connect A-control service tool (PAC-SKST). Check disconnection or looseness of indoor unit or transmission wire of remote controller. Set one of the remote controllers main if there is no problem with the action above. Check wiring of remote controller. Total wiring length: max. 00m (Do not use cable o or more) The number of connecting indoor units: max. 6 units The number of connecting remote controller: max. units When the above-mentioned problem ~ are not seen. 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 N is displayed, replace remote controller. c) When RC E is displayed, d) When ERC is displayed, [ c),d) Noise may be causing abnormality. ] If the unit is not normal after replacing indoor controller board in group control, the indoor controller board of address 0 may be abnormal. Set a remote controller to main, and the other to sub. Remote controller is connected with only indoor unit. The address changes to a separate setting. ~6 Diagnose remote controller. a) When RC OK is displayed, remote controllers have no problem. Turn the power off, and on again to check. When becoming abnormal again, replace indoor controller board. b)when RC N is displayed, replace remote controller. c)when RC E or ERC is displayed, noise may be causing abnormality. 0

21 Error Code Abnormal point and detection method Cause Countermeasure E6 E7 Fb Indoor/outdoor unit communication error (Signal receiving error) Abnormal if indoor controller board cannot receive any signal normally for 6 minutes after turning the power on. Abnormal if indoor controller board cannot receive any signal normally for minutes. Consider the unit as abnormal under the following condition: When or more indoor units are connected to outdoor unit, indoor controller board cannot receive a signal for minutes from outdoor controller circuit board, a signal which allows outdoor controller circuit board to transmit signals. Indoor/outdoor unit communication error (Transmitting error) Abnormal if receiving is detected 0 times continuously though indoor controller board has transmitted 0. Indoor controller board Abnormal if data cannot be normally read from the nonvolatile memory of the indoor controller board. Contact failure, short circuit or, miswiring (converse wiring) of indoor/outdoor unit connecting wire Defective transmitting receiving circuit of indoor controller board Defective transmitting receiving circuit of indoor controller board Noise has entered into indoor/ outdoor unit connecting wire. Defective transmitting receiving circuit of indoor controller board Noise has entered into power supply. Noise has entered into outdoor control wire. Defective indoor controller board Check LED display on the outdoor control circuit board. (Connect A-control service tool, PAC-SKST.) Refer to EA-EC item if LED displays EA-EC. Check disconnection or looseness of indoor/ outdoor unit connecting wire of indoor unit or outdoor unit. Check all the units in case of twin indoor unit system. - 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 indoor unit system. - Turn the power off, and on again to check. If abnormality generates again, replace indoor controller board. Replace indoor controller board. E or E Remote controller control board Abnormal if data cannot be normally read from the nonvolatile memory of the remote controller control board. (Error code: E) Abnormal if the clock function of remote controller cannot be normally operated. (Error code: E) Defective remote controller Replace remote controller. PA (0) (00) Forced compressor stop (due to water leakage abnormality) When the intake temperature subtracted with liquid pipe temperature is less than -0:( F), drain sensor detects whether it is soaked in the water or not at the interval of 90 seconds. (Drain pump will start operating when the drain sensor detects to be soaked in the water.) 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 drain sensor detects to be soaked in the water 0 times in a row. b) The intake temperature subtracted with liquid pipe temperature is detected to be less than -0:( F) for a total of 0 minutes. (When the drain sensor detects to be NOT soaked in the water, the detection record of a and b will be cleared.) The drain sensor detection is performed in operations other than cooling. (When the unit stops operating, during heating or fan operation, when the unit stops because of some abnormality) *Once the water leakage abnormality is detected, abnormality state will not be released until the main power is reset. Drain pump trouble Drain defective Drain pump clogging Drain pipe clogging Open circuit of drain sensor side heater Contact failure of drain sensor connector Dew condensation on drain sensor Drain water trickles along lead wire. Drain water waving due to filter clogging 6 Extension piping connection difference at twin system 7 Miswiring of indoor/ outdoor connecting at twin system 8 Room temperature thermistor / liquid pipe temperature thermistor detection is defective. Check the drain pump. Please confirm whether water can be drained. Confirm the resistance of the drain sensor. Check the connector contact failure. Check the drain sensor 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.

22 0-. TROUBLESHOOTIN BY INFERIOR PHENOMENA Note: Refer to the manual of outdoor unit for the detail of remote controller. Phenomena Cause Countermeasure ()LED on indoor controller board is off. When LED on indoor controller board is also off. Power supply of rated voltage is not supplied to outdoor unit. Defective outdoor controller circuit board Power supply of 08/0V is not supplied to indoor unit. Defective indoor power board Defective indoor controller board (For the separate indoor/outdoor unit power supply system) Power supply of 08/0V AC is not supplied to indoor unit. The connectors of the optional replacement kit are not used. Defective indoor controller board Defective indoor power board Check the voltage of outdoor power supply terminal block (L,L). When AC 08/0V is not detected, check the power wiring to outdoor unit and the breaker. When AC 08/0V is detected, check (below). Check the voltage between outdoor terminal block S and S. When AC 08/0V is not detected. Check the fuse on outdoor controller circuit board. Check the wiring connection. When AC 08/0V is detected, check (below). Check the voltage between indoor terminal block S and S. When AC 08/0V is not detected, check indoor/outdoor unit connecting wire for miswiring. When AC 08/0V is detected, check (below). Check voltage output from CNS on indoor power board (DC.V). Refer to When no voltage is output, check the wiring connection. When output voltage is between DC.V and DC.7V, check (below). Check the wiring connection between indoor controller board and indoor power board. Check the fuse on indoor controller board. If no problems are found, indoor controller board is defective. Check the voltage of indoor power supply terminal block (L,L). When AC08/0V is not detected, check the power supply wiring. When AC08/0V is detected, check (below). 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 (below). Check voltage output from CNDK on indoor controller board. When AC08/0V is not detected. Check the fuse on indoor controller board. Check the wiring connection between indoor power supply terminal block and CND on indoor controller board. When AC08/0V is detected, check (below). Check voltage output from CNS on indoor power board. When no voltage output, check the wiring connection between CNDK on indoor controller board and CNSK on indoor power board. If no problem are found, indoor power board is defective. When DC.~.7V is detected, check the wiring connection between CNS on indoor power board and CND on indoor power board. If no problem are found, indoor controller board is defective.

23 Note: Refer to the manual of outdoor unit for the detail of remote controller. Phenomena Cause Countermeasure ()LED on indoor controller board is off. When LED on indoor controller board is lit. Mis-setting of refrigerant address for outdoor unit (There is no unit corresponding to refrigerant address 0.) Check the setting of refrigerant address for outdoor unit. Set the refrigerant address to 0. (For grouping control system under which or more outdoor units are connected, set one of the units to 0.) Set refrigerant address using SW (-6) on outdoor controller circuit board. ()LED on indoor controller board is blinking. When LED on indoor controller board is also blinking. Connection failure of indoor/outdoor unit connecting wire When LED is lit. Miswiring of remote controller wires Under twin indoor unit system, indoor units are wired together. Refrigerant address for outdoor unit is wrong or not set. Under grouping control system, there are some units whose refrigerant address is 0. Shortcut of remote controller wires Defective remote controller Check indoor/outdoor unit connecting wire for connection failure. Check the connection of remote controller wires in case of twin indoor unit system. When indoor units are wired in one refrigerant system, connect remote controller wires to one of those units. 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 SW (-6) on outdoor controller circuit board. Remove remote controller wires and check LED on indoor controller board. When LED is blinking, check the shortcut of remote controller wires. When LED is lit, connect remote controller wires again and: if LED is blinking, remote controller is defective; if LED is lit, connection failure of remote controller terminal block etc. has returned to normal. ()Upward/downward vane performance failure The vane is not downward during defrosting and heat preparation and when the thermostat is OFF in HEAT mode. (Working of COOL protection function) Vane motor does not rotate. Defective vane motor Breaking of wire or connection failure of connector Upward/downward vane does not work. The vane is set to fixed position. Normal operation (The vane is set to horizontal regardless of remote control.) Check (left). Check the vane motor. (Refer to How to check the parts.) Check for breaking of wire or connection failure of connector. Normal operation (Each connector on vane motor side is disconnected.) ()Receiver for wireless remote controller Weak batteries of wireless remote controller Contact failure of connector (CNB) on wireless remote controller board (Insert failure) Contact failure of connector (CN90) on indoor controller board (Insert failure) Contact failure of connector between wireless remote controller board and indoor controller board Replace batteries of wireless remote controller. ~ 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.

24 0-. EMERENCY OPERATION 0--. When wireless remote controller has troubles or its battery is exhausted. Emergency operation is available in such a case using emergency operation switch equipped on the grille.. To start operation Cooling Operation Press (Cooling) switch. Heating Operation Press (Heating) switch. wwhen the unit starts operating, the operation lamp is lit. Emergency operation switch (cooling) Emergency operation switch (heating) Receiver Operation lamp wemergency operation will be performed as follows. Mode Cooling Heating Set temperature Fan speed Airflow direction :, 7-F High Horizontal (0deg). To stop operation Press either emergency operation switch (cooling/heating). :, 7-F High Downward (70deg) 0--. When wired remote controller or indoor unit microcomputer has troubles. If other defects are not found when trouble occurs, emergency operation starts as the indoor controller board switch (SWE) is set to ON. During the emergency operation, the indoor unit is as follows; () Indoor fan high speed operation () Drain pump operation. For emergency operation of cooling or heating When emergency operation for COOL or HEAT, setting of the switch (SWE) in the indoor controller board and outdoor unit emergency operation are necessary.. Check items and notices as the emergency operation () Emergency operation cannot be used as follows; When the outdoor unit is something wrong. When the indoor fan is something wrong. When drain overflow protection operation is detected during self-diagnosis. (Error code : P) () Emergency operation will be serial operation by the power supply ON/OFF. ON/OFF or temperature, etc. adjustment is not operated by the remote controller. () Do not operate for a long time as cold air is blown when the outdoor unit starts defrosting operation during heat emergency operation. () Cool emergency operation must be within 0 hours. Otherwise, heat exchanger of indoor unit may get frosted. () After completing the emergency operation, return the switch setting, etc. in former state. (6) Since vane does not work at emergency operation, position the vane slowly by hand.

25 0-6. HOW TO CHECK THE PARTS PLA-AAA PLA-A8AA PLA-AAA PLA-A0AA PLA-A6AA PLA-AAA PLA-AAA PLA-A8AA PLA-AAA PLA-A0AA PLA-A6AA PLA-AAA Parts name Room temperature thermistor (TH) Pipe temperature thermistor/liquid(th) Condenser/Evaporator temperature thermistor (TH) Vane motor (MV) Check points Disconnect the connector then measure the resistance using a tester. (At the ambient temperature 0:(0 F)~0:(86 F)) Normal.k"~9.6k" Abnormal Open or short Measure the resistance between the terminals using a tester. (At the ambient temperature0:(68 F)) Normal Abnormal k" Open or short (Refer to the thermistor characteristic graph.) Fan motor (MF) Relay connector Red White Black Drain pump (DP) Protector OFF:0: ON :80i0: Measure the resistance between the terminals using a tester. (Winding temperature 0:(68 F)) Motor terminal or Relay connector Red-Black White-Black PLA-A/8//0AA PLA-A/8//0AA 87." 0." Normal PLA-A6/AA PLA-A6/AA.6" 0.7" Measure the resistance between the terminals using a tester. (Winding temperature 0:(68 F)) Abnormal Open or short YLW YLW Normal Abnormal 9" Open or short Drain sensor (DS) Measure the resistance between the terminals using a tester. Measure the resistance after minutes have passed since the power supply was intercepted. (At the ambient temperature 0:( F)~60:(0 F)) Normal 0.6k"~6.0k" Abnormal Open or short (Refer to the thermistor characteristic graph.)

26 <Thermistor Characteristic graph> Thermistor for lower temperature Room temperature thermistor(th) Pipe temperature thermistor/liquid(th) Condenser/evaporator temperature thermistor(th) 0 <Thermistor for lower temperature> 0 Thermistor R0=k' ± % Fixed number of B=80 ± % t(:):rt=exp { 80( ) } 7+t 7 T( F):Rt=exp { 80( ) } : ( F) k' 0: (0 F) 9.6k' 0: (68 F) 6.k' : (77 F).k' 0: (86 F).k' 0:(0 F).0k' T-.8 Resistance (k") Temperature : F Thermistor for drain sensor 0 < Thermistor for drain sensor > 9 Thermistor R0=6.0k' ±% Fixed number of B=90 ±% t(:)rt= 6 exp { 90( ) } 7+t 7 T( F):Rt=6exp { 90( ) } : ( F) 6.0k' 0: (0 F).9k' 0: (68 F).6k' : (77 F).k' 0: (86 F).8k' 0:(0 F).k' 60:(0 F) 0.6k' T-.8 Resistance (k") Temperature : F 6

27 0-7.TEST POINT DIARAM Power board PLA-AAA PLA-A8AA PLA-AAA PLA-A0AA PLA-A6AA PLA-AAA PLA-AAA PLA-A8AA PLA-AAA PLA-A0AA PLA-A6AA PLA-AAA CNS Connect to the indoor controller board (CND) between to.6-.7v DC (Pin (+)) CNSK Connect to the indoor controller board (CNDK) between to 08/0V AC 7

28 0-7-. Indoor controller board PLA-AAA PLA-A8AA PLA-AAA PLA-A0AA PLA-A6AA PLA-AAA PLA-AAA PLA-A8AA PLA-AAA PLA-A0AA PLA-A6AA PLA-AAA CND Connect to the indoor power board (CNS) (.~.7V DC) LED Power supply (I.B) LED Power supply (R.B) LED Transmission (Indoor/outdoor) CNC Transmission (Indoor/outdoor) (0~V DC) CN Connect to the terminal block(tb) (Remote controller connecting wire) (0.~.6V DC) CN0 Room temperature thermistor (TH) CNDK Connect to the indoor power board (CNSK) (08/0V AC) CN Pipe temperature thermistor/liquid (TH) CN9 Condenser/evaporator temperature thermistor (TH) FUSE (6. A 0 V) CN Drain sensor (DS) CND Power supply input (08/0V AC) CN90 Connect to the wireless remote controller board (CNB) CNP Drain-pump output (DP) (08/0V AC) CN6V Vane motor output (MV) CN Connector (HA terminal-a) CNC Dew prevention heater (H) (08/0V AC) CN Centrally control CN Heater output (V DC) CN Remote switch SWE Emergency operation CNL Connector (LOSSNAY) Jumper wire J, J Pair number setting with wireless remote controller FAN Fan motor output SW Capacity setting SW Model setting 8

29 0-8. FUNCTIONS OF DIP SWITCH AND JUMPER WIRE Each function is controlled by the dip switch and the jumper wire on control P.C. board. SW and SW 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. (Marks in the table below) Jumper wire ( : Short : Open) Jumper wire Functions Setting by the dip switch and jumper wire Remarks SW Model settings MODELS PLA-A AA PLA-A AA Service board ON OFF SW Capacity settings MODELS PLA-AAA PLA-AAA Service board ON OFF PLA-A8AA PLA-A8AA ON OFF PLA-AAA PLA-AAA ON OFF PLA-A0AA PLA-A0AA ON OFF PLA-A6AA PLA-A6AA ON OFF PLA-AAA PLA-AAA ON OFF J J Pair number setting with wireless remote controller Wireless remote controller setting 0 ~ 9 Control PCB setting J J <Initial setting> Wireless remote controller: 0 Control PCB: (for both J and J) pair number settings are supported. The pair number settings of the wireless remote controller and indoor control PCB (J/J) are given in the table on the left. (' ' in the table indicates the jumper wire is disconnected.) JP Unit type setting Model Without TH With TH JP There is no jumper (JP) because these models have the cond./eva. temperature thermistor (TH). JP Indoor controller board type setting Indoor controller board type For product Service parts JP 9

30 DISASSEMBLY PROCEDURE PLA-AAA PLA-A8AA PLA-AAA PLA-A0AA PLA-A6AA PLA-AAA PLA-AAA PLA-A8AA PLA-AAA PLA-A0AA PLA-A6AA PLA-AAA Be careful on removing heavy parts. OPERATIN PROCEDURE PHOTOS & ILLUSTRATIONS. Removing the air intake grille () Slide the knob of air intake grille to the direction of the arrow to open the air intake grille. () Remove the string hook from the panel to prevent the grille from dropping. () Slide the shaft in the hinge to the direction of the arrow and remove the air intake grille. Figure Air intake grille Air intake grille knob rille. Removing the room temperature thermistor () Remove the screw( ) in the room temperature thermistor holder to remove the holder and the room temperature thermistor. () Remove the screw from the bell mouth, and unscrew the other screws (fix to the oval hole which has a different diameter) to remove the bell mouth. () Hold the holder claw, and remove the room temperature thermistor and holder. () Disconnect the connector (CN0:red) on the indoor control board. Photo Bell mouth Screws Room temperature thermistor Air intake grille. Removing the electrical box () Disconnect the lead wire of the vane motor from the clamp, and disconnect the white connector (0P). () Remove the room temperature thermistor with the holder. () Remove the bell mouth.(see photo ) () Disconnect the relay connector in the electrical box. Red (P) for fan motor Disconnect the connector on the indoor controller board. White (P) for pipe temperature detecting thermistor Blue (P) for drain pump White (P) for drain sensor () Remove the screws from the electrical box, loosen another screws to remove the box. <Electrical parts in the electrical box> Indoor controller board Power board Terminal block Capacitor Photo Turbo fan Electrical box Power board Nut Indoor controller board Capacitor Connector Terminal block 0

31 OPERATIN PROCEDURE. Removing the fan motor () Remove the bell mouth.(see photo ) () Remove the electrical box.(see photo ) () Remove the turbo fan nut. () Pull out the turbo fan. () Disconnect the connector of the fan motor lead wire. (6) Remove the nuts of the fan motor. Photo PHOTOS & ILLUSTRATIONS Fan motor Nut Nut Connector. Removing the pipe temperature thermistor and condenser evaporator temperature thermistor () Remove the bell mouth.(see photo ) () Remove the electrical box.(see photo ) () Remove the turbo fan. () Remove the screw of the service panel. () Remove the service panel. (6) Remove the pipe temperature thermistor which is inserted into the holder installed to the thin copper pipe. (7) Disconnect the -pin white connector.(cn) [Condenser/ evaporator temperature thermistor] (8) Remove the drain pan. (See Photo 6) (9) Remove the thermistor which is installed into the holder to the indoor coil. (0) Disconnect the -pin black connector. (CN9) 6. Removing the panel () Remove the air intake grille.(see figure ) Corner panel (See figure ) () Remove the corner screw. () Slide the corner panel to the direction of the arrow, and remove the corner panel. Panel (See photo ) () Disconnect the connector that connects with the unit. () Remove the screws from the panel and loosen another screws, which fix to the oval holes, have different diameters. () Rotate the panel a little to remove the screws. Photo Figure Corner panel Photo Connector Screw Pipe temperature thermistor Service access Screw Corner panel Panel Screw Panel 7. Removing the drain pan () Remove the panel. (See photo ) () Remove the drain plug (Larger one), drain the remaining water in the drain pan. () Remove the corner cover. ( screws) () Remove the bell mouth (See photo ) () Remove the electrical box. (See photo ) (6) Remove the lead wire holder. ( screw) (7) Remove the screws and pull out the drain pan. w Pull out the left and right of the pan gradually. Be careful not to crack or damage the pan. Photo 6 Drain pan Screw Lead wire holder Screw Drain plug(larger one) Screw Screw Corner cover

32 OPERATIN PROCEDURE PHOTOS & ILLUSTRATIONS 8. Removing the drain pump and drain sensor () Remove the panel. (See photo ) () Remove the bell mouth. (See photo ) () Remove the electrical box. (See photo ) () Remove the drain pan. (See photo 6) () Remove the screws of the drain pump. (6) Cut the drain hose band, pull out the drain hose from the drain pump. (7) Pull out the drain pump. (8) Remove the drain sensor and the holder. Photo 7 Screw Drain sensor Drain hose Fixing band Drain pump Screw 9. Removing the heat exchanger () Remove the panel. (See photo ) () Remove the bell mouth. (See photo ) () Remove the electrical box. (See photo ) () Remove the drain pan. (See photo 6) () Remove the turbo fan. (See photo ) (6) Remove the screws of the piping cover, and pull out piping cover. (7) Remove the screws of the outer wall cover, and pull out the outer wall cover. (8) Remove the screw of the coil support. (9) Remove the screws of the coil. (0) Pull out the heat exchanger. Photo 8 Heat exchanger Coil support Coil support Coil screws Coil support Photo 9 Screw Outer wall cover Piping cover Screws of piping cover

33 STAND BY DEFROST CHECK CENTRALLY CONTROLLED ON OFF CLOCK ERROR CODE Hr. NOT AVAILABLE C FILTER CHECK MODE TEST RUN FUNCTION PARTS LIST (non-rohs compliant) PANEL PARTS PLA-AAA PLA-A8AA PLA-AAA PLA-A0AA PLA-A6AA PLA-AAA EAR 9 EAR (VANE) 8 VANE BUSH 7 6 VANE MOTOR 0 C TEMP. ON/OFF Part number that is circled is not shown in the figure. No. Parts No. Parts Name Specification T7W E 00 T7W E0 00 R0 E0 68 R0 E00 00 R0 E00 69 R0 E00 R0 E00 06 R0 E00 00 R0 E0 00 T7W E0 7 T7W E0 0 R0 E00 67 AIR OUTLET RILLE VANE CORNER PANEL L.L FILTER RILLE ASSY VANE MOTOR VANE BUSH EAR (VANE) EAR REMOTE CONTROLLER CABLE ASSY SCREW ASSY Q'ty / set PLA-A/8/ /0/6/AA 8 Remarks (Drawing No.) Including H Wiring Diagram Symbol MV R.B Recommended Q'ty

34 FUNCTIONAL AND STRUCTURAL PARTS PLA-AAA PLA-A8AA PLA-AAA PLA-A0AA MOTOR CAP SPL WASHER CONDENSER EVAPORATOR TEMPERATURE THERMISTOR PIPE TEMPERATURE THERMISTOR No. Parts No. Parts Name R0 E8 R0 08K 097 T7W H0 80 T7W H 80 T7W H 80 T7W E06 0 R0 E 0 R0 E00 T7W E0 0 T7W E 76 R0 A 0 TURBO FAN SPL WASHER HEAT EXCHANER HEAT EXCHANER HEAT EXCHANER PIPE TEMPERATURE THERMISTOR CONDENSER / EVAPORATOR TEMPERATURE THERMISTOR MOTOR CAP LEAD ASSY(F/M) FAN MOTOR RUBBER MOUNT Specification D7D6P70MS Q'ty / set PLA-A AA 8, 0 Remarks (Drawing No.) Wiring Diagram Symbol TH TH MF Recommended Q'ty

35 FUNCTIONAL AND STRUCTURAL PARTS PLA-A6AA 9 8 PLA-AAA 7 SPL WASHER 6 MOTOR CAP CONDENSER EVAPORATOR TEMPERATURE THERMISTOR PIPE TEMPERATURE THERMISTOR No. Parts No. Parts Name Specification Q'ty / set PLA-A AA 6, Remarks (Drawing No.) Wiring Diagram Symbol Recommended Q'ty T7W E0 R0 08K 097 T7W H 80 T7W E06 0 R0 E 0 R0 E00 T7W E0 0 T7W E08 76 R0 A 0 TURBO FAN SPL WASHER HEAT EXCHANER PIPE TEMPERATURE THERMISTOR CONDENSER / EVAPORATOR TEMPERATURE THERMISTOR MOTOR CAP LEAD ASSY(F/M) FAN MOTOR RUBBER MOUNT D7CP0MS TH TH MF

36 FUNCTIONAL AND STRUCTURAL PARTS PLA-AAA PLA-A8AA PLA-AAA PLA-A0AA DRAIN PLU DRAIN PLU CAPACITOR 6 TERMINAL BLOCK 0 TERMINAL BLOCK TERMINAL BLOCK ROOM TEMPERATURE THERMISTOR No. Parts No. Parts Name T7W E09 9 T7W E00 7 T7W E R0 E00 66 R0 K T7W E T7W E6 0 R0 E00 0 R0 6 6 R0 E 6 T7W E 76 T7W E0 R0 A R0 A8 DRAIN PAN DRAIN HOSE DRAIN PUMP DRAIN SENSOR SENSOR HOLDER INDOOR POWER BOARD INDOOR CONTROLLER BOARD ROOM TEMPERATURE THERMISTOR TERMINAL BLOCK TERMINAL BLOCK TERMINAL BLOCK CAPACITOR DRAIN PLU DRAIN PLU Specification P (, ) P (S, S, S) P (L, L, R).0+ 0V Q'ty / set PLA-A AA, 8,, 0 Remarks (Drawing No.) Wiring Diagram Symbol DP DS P.B I.B TH TB TB TB C Recommended Q'ty 6

37 FUNCTIONAL AND STRUCTURAL PARTS PLA-A6AA PLA-AAA DRAIN PLU DRAIN PLU CAPACITOR TERMINAL BLOCK TERMINAL BLOCK TERMINAL BLOCK ROOM TEMPERATURE THERMISTOR No. Parts No. Parts Name T7W E07 9 T7W E00 7 T7W E R0 E00 66 R0 K T7W E T7W E6 0 R0 E00 0 R0 6 6 R0 E 6 T7W E 76 R0 E0 R0 A R0 A8 DRAIN PAN DRAIN HOSE DRAIN PUMP DRAIN SENSOR SENSOR HOLDER INDOOR POWER BOARD INDOOR CONTROLLER BOARD ROOM TEMPERATURE THERMISTOR TERMINAL BLOCK TERMINAL BLOCK TERMINAL BLOCK CAPACITOR DRAIN PLU DRAIN PLU Specification P (, ) P (S,S, S) P (L,L, R) V Q'ty / set PLA-A AA 6, Remarks (Drawing No.) Wiring Diagram Symbol DP DS P.B I.B TH TB TB TB C Recommended Q'ty 7

38 STAND BY DEFROST CHECK CENTRALLY CONTROLLED ON OFF CLOCK ERROR CODE Hr. NOT AVAILABLE C FILTER CHECK MODE TEST RUN FUNCTION RoHS PARTS LIST PANEL PARTS PLA-AAA PLA-A8AA PLA-AAA PLA-A0AA PLA-A6AA PLA-AAA EAR 9 EAR (VANE) 8 VANE BUSH 7 6 VANE MOTOR 0 C TEMP. ON/OFF Part number that is circled is not shown in the figure. No. Parts No. Parts Name Specification RoHS T7W E9 00 T7W E09 00 R0 E 68 R0 E 00 R0 E 69 R0 E7 R0 E0 06 R0 E0 00 R0 E0 00 T7W E 7 T7W E0 0 R0 E0 67 AIR OUTLET RILLE VANE CORNER PANEL L.L FILTER RILLE ASSY VANE MOTOR VANE BUSH EAR (VANE) EAR REMOTE CONTROLLER CABLE ASSY SCREW ASSY Q'ty / set PLA-A/8/ /0/6/AA 8 Remarks (Drawing No.) Including H Wiring Diagram Symbol MV R.B Recommended Q'ty 8

39 FUNCTIONAL AND STRUCTURAL PARTS PLA-AAA PLA-A8AA PLA-AAA PLA-A0AA SPL WASHER 6 MOTOR CAP CONDENSER EVAPORATOR TEMPERATURE THERMISTOR PIPE TEMPERATURE THERMISTOR No. Parts No. Parts Name RoHS R0 E8 R0 09K 097 T7W H0 80 T7W H 80 T7W H 80 R0 H0 0 R0 H 0 R0 E0 T7W E0 0 T7W E7 76 R0 A 0 TURBO FAN SPL WASHER HEAT EXCHANER HEAT EXCHANER HEAT EXCHANER PIPE TEMPERATURE THERMISTOR CONDENSER / EVAPORATOR TEMPERATURE THERMISTOR MOTOR CAP LEAD ASSY (F/M) FAN MOTOR RUBBER MOUNT Specification D7D6P70MS Q'ty / set PLA-A AA 8, 0 Remarks (Drawing No.) Wiring Diagram Symbol TH TH MF Recommended Q'ty 9

40 FUNCTIONAL AND STRUCTURAL PARTS PLA-A6AA 9 8 PLA-AAA 7 6 MOTOR CAP SPL WASHER CONDENSER EVAPORATOR TEMPERATURE THERMISTOR PIPE TEMPERATURE THERMISTOR No. Parts No. Parts Name RoHS R0 E9 R0 09K 097 T7W H 80 R0 H0 0 R0 H 0 R0 E0 T7W E0 0 T7W E8 76 R0 A 0 TURBO FAN SPL WASHER HEAT EXCHANER PIPE TEMPERATURE THERMISTOR CONDENSER / EVAPORATOR TEMPERATURE THERMISTOR MOTOR CAP LEAD ASSY(F/M) FAN MOTOR RUBBER MOUNT Specification D7CP0MS Q'ty / set PLA-A AA 6, Remarks (Drawing No.) Wiring Diagram Symbol TH TH MF Recommended Q'ty 0

41 FUNCTIONAL AND STRUCTURAL PARTS PLA-AAA PLA-A8AA PLA-AAA PLA-A0AA DRAIN PLU DRAIN PLU CAPACITOR 6 TERMINAL BLOCK 0 TERMINAL BLOCK TERMINAL BLOCK ROOM TEMPERATURE THERMISTOR No. Parts No. Parts Name RoHS T7W E6 9 T7W E0 7 T7W E R0 E0 66 R0 K T7W E T7W E6 0 R0 H 0 R0 E 6 R0 E8 6 T7W E 76 T7W E R0 A00 R0 A0 DRAIN PAN DRAIN HOSE DRAIN PUMP DRAIN SENSOR SENSOR HOLDER INDOOR POWER BOARD INDOOR CONTROLLER BOARD ROOM TEMPERATURE THERMISTOR TERMINAL BLOCK TERMINAL BLOCK TERMINAL BLOCK CAPACITOR DRAIN PLU DRAIN PLU Specification P (, ) P (S, S, S) P (L, L, R).0+ 0V Q'ty / set PLA-A AA, 8,, 0 Remarks (Drawing No.) Wiring Diagram Symbol DP DS P.B I.B TH TB TB TB C Recommended Q'ty

42 FUNCTIONAL AND STRUCTURAL PARTS PLA-A6AA PLA-AAA DRAIN PLU DRAIN PLU CAPACITOR 6 TERMINAL BLOCK 0 TERMINAL BLOCK TERMINAL BLOCK ROOM TEMPERATURE THERMISTOR No. Parts No. Parts Name RoHS T7W E8 9 T7W E0 7 T7W E R0 E0 66 R0 K T7W E T7W E6 0 R0 H 0 R0 E 6 R0 E8 6 T7W E 76 R0 E R0 A00 R0 A0 DRAIN PAN DRAIN HOSE DRAIN PUMP DRAIN SENSOR SENSOR HOLDER INDOOR POWER BOARD INDOOR CONTROLLER BOARD ROOM TEMPERATURE THERMISTOR TERMINAL BLOCK TERMINAL BLOCK TERMINAL BLOCK CAPACITOR DRAIN PLU DRAIN PLU Specification P (, ) P (S,S, S) P (L,L, R) V Q'ty / set PLA-A AA 6, Remarks (Drawing No.) Wiring Diagram Symbol DP DS P.B I.B TH TB TB TB C Recommended Q'ty

43

44 TM HEAD OFFICE : TOKYO BLD., -7-, MARUNOUCHI, CHIYODA-KU, TOKYO 00-80, JAPAN CCopyright 006 MITSUBISHI ELECTRIC ENINEERIN CO., LTD. Distributed in Jun. 007 No.OC70 REVISED EDITION-B PDF 9 Distributed in Aug. 006 No.OC70 REVISED EDITION-A PDF 9 Distributed in Feb. 006 No.OC70 PDF 0 Made in Japan New publication, effective Jun. 007 Specifications subject to change without notice.