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PLA-RP100BA3 - mitsubishitech.co.uk

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1. 1 E9 Transmitting error Outdoor unit 2 UP Compressor overcurrent interruption 3 U3 U4 Open short of outdoor unit thermistors i 4 UF Compressor overcurrent interruption When compressor locked ja GE 5 U2 Abnormal high discharging temperature 49C worked of the outdoor insufficient refrigerant controller board 6 U1 Ud Abnormal high pressure 63H worked Overheating As for outdoor protection operation uniteretatita 7 U5 Abnormal temperature of heat sink SEELEN 8 U8 Outdoor unit fan protection stop service manual 9 U6 Compressor overcurrent interruption Abnormal of power module 10 U7 Abnormality of super heat due to low discharge temperature 11 U9 UH Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit Current sensor error 12 13 e 14 Others Other errors Refer to the technical manual for the outdoor unit 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 If 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 e On wireless remote controller The continuous buzzer sounds from receiving section of indoor unit Blink of operation lamp e
2. Figure 3 Cond eva thermistor TH5 Liquid pipe temp thermistor TH2 OPERATING PROCEDURE PHOTOS amp ILLUSTRATIONS 10 Removing the drain pump DP and float switch FS Photo 7 1 Remove the drain pan See Photo 6 2 Cut the hose band and remove the hose Float switch 3 Remove the drain pump assembly 3 screws and 2 hooks 4 5 Remove the drain pump 3 screws Hose band Remove the float switch 2 screws Drain pump Drain pump assembly fixing screw Photo 8 Drain pump fixing screw Float switch fixing screw 11 Removing the heat exchanger Photo 9 1 Remove the drain pan See Photo 6 D 2 Remove the 3 screws of the piping cover and pull out Piping cover piping cover Coil glate Heat exchanger 3 Remove the 2 screws of coil plate 4 Remove the 2 screws of the coil 5 Remove the screw of the coil support 6 Pull out the heat exchanger Heat exchanger AnA fixing screw S Coil support Coil support fixing screw 38 39 Mi SUM afa MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN New publication effective Apr 2009 Copyright 2009 MITSUBISHI ELECTRIC ENGINEERING CO LTD Specifications subject to change without notice Distributed in Apr 2009 No OCH459 PDF 7 Made in Japan
3. Operation Section Temperature setting buttons VY Down A Up Timer Menu button The indicator N shows the direc tion of the outcoming airflow One Hour Only indicator also changes 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 1 hour when the airflow direction Room Temperature display Shows the room temperature The room temperature display range is 8 39C The display blinks if the temperature is less than 8C or 39C or more Ventilation indicator 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 Appears when the unit is running in Ventilation mode ON OFF button A MITSUBISHI ELECTRIC Monitor Set button Mode button Return button d Set Time buttons best CA Ahead Timer On Off button Set Day button H Teme v 4 SLE NN Opata OMENU OONIOFF D ON OFF SiC Zu Ze FILTER Ja BACK PAR 21MAA MONITORISET DAY CHECK TEST Cv CA OCLOCK V OPERATION A CLEAR Fan Speed button Filter 44 button lt Enter gt button Test Run button Check
4. Open or short Drain pump DP Measure the resistance between the terminals with a tester Winding temperature 20 C YLW Normal Abnormal 290 Q Open or short YLW Drain float switch FS Measure the resistance between the terminals with a tester i Moving part Switch E 1 State of moving part Normal Abnormal d Ars Magnet 2 UP Short Other than short 3 DOWN Open Other than open 4 Moving Part i see sensor Turn on the indoor unit with the black plastic tape on the outside of Option i see sensor controller board With electricity being turned on measure the power voltage between connectors with tester i see sensor rotates and pull out the connector of motor for i see sensor Do not disassemble corner panel with i see sensor Black plastic tape i see sensor At the ambient temperature of 10 C 40 C i see sensor connector Normal Abnormal 4l3 2 1 DC 1 857V 3 132V Other than the normal Blue BlackPink Brown DC 0 939V 1 506V Other than the normal NOTE Be careful not to discharge static electricity into electronics Vane motor for Measure the resistance between the terminals with a tester i see sensor Option At the ambient temperature of 20 C 30 C White Connector Abnorm
5. Retension about 2kgf 31 Check if wire is drawn out by pulling with 3kgf 10 4 TROUBLESHOOTING e Check the following points Problem Possible Reason Corrective Action Air intake grille does not function with operation of the wireless remote controller Air conditioner is running Stop running the air conditioner and try again Power failure After recovering from power failure try again Batteries are not inserted into the wireless remote controller Or battery power is running low Install or replace the battery There is something on the air intake grille Or something is stuck in the air intake grille Remove the objects or obstacles from the air intake grille Or remove the stuck object Air intake grille cannot be fixed in place There is something on the air intake grille Remove the objects or obstacles from the air intake grille Filter is not properly installed Lower the air intake grille again and check whether the filter is installed in the correct position Air intake grille is not hung with all 4 hooks Lower the air intake grille again and hook on the air intake grille Air intake grille stops lowering Air intake grille would not lower any further The air intake grille has finished lowering to the auto stop position This is normal Noises are made during up down operation While air intake grille is mo
6. 5 Remove the 2 screws from the panel which fix to the oval holes 6 Rotate the panel a little to come to the bell shaped hole where the screw is large and remove the panel Figure 2 Screw Detail Screw Corner panel Corner panel Photo 4 org 2 gt Ball shaped hole Oval hole 8 Removing the drain pan 1 Remove the air intake grille and the filter See Figure 1 2 Remove the 2 screws from the electrical box cover 3 Disconnect the connectors Refer to 4 4 Remove the panel See Photo 4 5 5 Remove the electrical wiring service panel 3 screws 6 Remove the electrical box See Photo 2 7 Remove the bell mouth See Photo 2 8 Remove the 4 screws and pull out the drain pan x Pull out the left and right of the pan gradually Be careful not to crack or damage the pan Drain pan fixing screw Photo 6 Drain pan 28 gt fixing screw Sa N a Electrical wiring service panel Drain pan fixing screw Electrical wiring ser Drain pan vice panel fixing screw 9 Removing the pipe temperature thermistor TH2 and condenser evaporator temperature thermistor TH5 1 Remove the drain pan See Photo 6 2 Remove the turbo fan See Photo 3 3 Remove the 2 wiring clamps See Photo 3 4 Remove the coil plate 2 screws 5 Remove the thermistors which are inserted into the holders installed to the thin copper pipe 6 Disconnect the 4 pin white connector CN44
7. Set refrigerant address of each unit Dip switch on the outdoor unit Refrigerant address 00 01 Refrigerant address Refrigerant address noo 91 Operation pattern Fig 1 Back up function only Request code number 312 Error occurs on main unit Start operation Main Sub Main Sub unit unit O Rotation function amp Back up function Request code number 313 318 Error occurs on main unit i E Start operation Main Sub Main Sub Main Sub OC Outdoor unit Main CN i IC Indoor unit unit EE lt RC Wired remote controller Run x IC 1 l l Sub j unit IC 2 1 rt gt gt 4t 1 28 days l 1 28 days I Ex When the request code number is 313 each unit operates alternately in daily cycle Note When the unit is restarted to operate after turning off the power or OFF operation the unit which was operationg will start operation To operate the main unit refer to the 10 5 2 and set the requet code No which is not the same as the current one and set again the former reguest 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 4degrees C below set point the 2nd unit stops operat
8. Vcc Voltage between pins of C955 15VDC Same as of CNMF CNMF Fan motor DC 310 340V DC15V CNO1 d Wel EA D Connect to the Terminal Block TB4 CNP A o S a Indoor outdoor connecting line o oJ peen i Between and Drain pump output DP 220 240V AC 220 240V AC CNAC Connect to the auto grille controller board CN3A FUSE 6 3A 250V 220 240V AC 25 9 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 eguipped 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 x Open Jumper wire Functions Setting by the dip switch and jumper wire Remarks MODELS SETTING SW1 Mogel PLA RP100BA3 R settings jajal le OFF Capacity MODELS SETTING nee SE PLA RP100BA3 Hm 0 N alaian A lt lnitial setting gt Control PCB setting Wireless remote controller 0 Pair number Gontrolisr setting Jar J42 Control PCB O for both J41 and J42 J41 setting with 0 O O 4 pair number settings are supported J42 wireless 1 z O The pair number settings of the wireless remote remote 2 O X controller and indoor control PCB J41 J42 a
9. address O Defective transmitting receiving circuit of remote controller Defective transmitting receiving circuit of indoor controller board Noise has entered into trans mission wire of remote control ler O Set a remote controller to main and the other to sub amp Remote controller is connected with only one indoor unit The address changes to a separate setting Diagnose remote controller a When RC OK is displayed remote con trollers have no problem Turn the power off and on again to check When becoming abnormal again replace indoor controller board b When RC NG is displayed replace remote controller c When RC E3 or ERC 00 66 is dis played noise may be causing abnormal ity 18 Error Code Abnormal point and detection method Cause Countermeasure Indoor outdoor unit communication error Signal receiving error O Abnormal if indoor controller board cannot receive any signal normally for 6 minutes after turning the power on O Abnormal if indoor controller board cannot receive any signal normally for 3 minutes Consider the unit abnormal under the fol lowing 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 O Contact failure
10. circuits must be disconnected 2 2 CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilising refrigerant R410A Use new refrigerant pipes Do not use refrigerant other than R410A 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 If other refrigerant R22 etc is used chlorine in refrige rant 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 Make sure that the inside and outside of refrige rant 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 Use the following tools specifically designed for use with R410A refrigerant Contamination inside refrigerant piping can cause deterio ration of refrigerant oil etc The following tools are necessary to use R410A refrigerant Tools for R410A Flare tool Size adjustment gauge Vacuum pump adaptor Gauge manifold Charge hose Gas leak detector Store the piping to be used indoors during installation and both ends of
11. Height 3 2m 3 6m depending on indoor units number of air outlets and air volume ceiling en ddi comin DEE ee 200 may not reach me 12345678910 12345678910 indicated ceiling height as shown in the left table Lowering distance 2 8m Lowering distance 3 2m Rough Indication of N Rough Indication of N the Ceiling Height 3 6 m Lm the Ceiling Height 4 0 m 4 4 m Coniowaion OFF MMEWMM IMAM coriouaton OFFONANNNUNKN 12345678910 12345678910 Lowering distance 3 6 m Lowering distance 4 0m Rough Indication of 44m 48m Rough Indication of 4 8m 5 2m the Ceiling Height Configuration ee TA Configuration coat ll 12345678910 12345678910 3 Put the cover back on the electric box the Ceiling Height 10 1 2 How to perform the up down operation using wireless remote controller Ensure that the air conditioner is not running Otherwise it may cause an injury or a failure J AN Warning 1 Ensure that the air conditioner is not running 2 Press the Down button to lower the air intake grille By default the air intake grille will automatically stop at a lowering distance of 1 6 m from the ceiling level The distance can be changed to 1 2 m 2 0 m 2 4 m 2 8 m 3 2 m 3 6 m and 4 0 m These should be used only as a guide You should lower the air intake grille yourself to check the exact distanc
12. Vcc between 5 and 4 of the fan connector Vec DC15V 4 Is the voltage normal gt Yes gt gt C Replace the fan motor 2 No Yes OK Check the operation of fan gt END 4 NG Replace the indoor controller board Replace the indoor controller board 4 OK Check the operation gt END v NG Replace the fan motor 24 9 7 TEST POINT DIAGRAM Indoor controller board PLA RP100BA3 LED3 CN3G Transmission Indoor outdoor Connect to the auto grille controller board CN3G CN90 13V pulse output Connect to the wireless remote controller board CNB CNV Vane motor output MV 12V pulse output CN4Y SW1 i see sensor Model selection CN6Y SW2 Capacity setting Jumper wire J41 J42 i see sensor motor output 12V DC pulse output LED2 Pair No setting for wireless Power supply R B remote controller CN4F CN2L Connector LOSSNAY CN51 Connector Centrally control Drain float switch FS CN44 Pipe temperature SWE thermistor Emergency operation O O Liquid TH2 CN41 Condenser Evaporator TH5 Connector HA terminal A CN32 Connector Remote switch CN22 Connect to the terminal block TB5 Remote controller con necting wire 10 4 14 6V DC CN3C Transmission Indoor outdoor 0 24V DC CN20 Room temperature thermistor TH1 LED1 Power supply BI
13. button Clear button Airflow Up Down button Opening the lid Louver button Y Operation button To return operation number Built in temperature sensor Ventilation button A Operation button To go to next operation number Note PLEASE WAIT message This message is displayed for approximately 3 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 e Wireless remote controller CHECK STAN display CHECK and TEST RUN display indicate that the unit is being checked or test run MODELS display Blinks when model is selected OE Xt display OPERATION MODE display Operation mode display indicates which operation mode is in effect s display The vertical direction of air flow is indicated GI display a FAN SPEED display indicates which fan speed has been selected ON
14. connector CN90 on indoor con troller board Insert failure O Contact failure of connector between wireless remote controller board and indoor controller board 21 O Replace batteries of wireless remote con troller 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 9 5 EMERGENCY OPERATION 9 5 1 When wireless remote controller fails or its battery is exhausted When the remote controller cannot be used When the batteries of the remote controller run out or the remote control ler malfunctions the emergency operation can be done using the emer gency buttons on the grille D DEFROST STAND BY lamp Operation lamp Emergency operation switch heating O Emergency operation switch cooling ZC Zi Receiver Alv SIREN Starting operation O DR A ELECTRIC To operate the cooling mode press the button O for more than 2 O seconds i To operate the heating mode press the button for more than 2 seconds Lighting of the Operation lamp means the start of operation Details of EMERGENCY MODE are as shown below Operation mode COOL HEAT Set temperature 24 C 24 C Fan speed High High Air ow direction Horizontal Downward 5 Stopping operation e To
15. finishing service There is no abnormality in electrical component controller board remote controller and etc Not logged O Re check the abnormal symptom Conduct trouble shooting and ascertain the cause of the trouble according to 9 4 Troubleshooting by inferior phenomena amp Continue to operate unit for the time being if the cause is not ascertained O There is no abnormality concerning of parts such as electrical component controller board remote controller and etc 12 9 2 MALFUNCTION DIAGNOSIS METHOD BY REMOTE CONTROLLER lt in case of trouble during operation gt When a malfunction occurs to air conditioner both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop lt Malfunction diagnosis method at maintenance service gt CHECK display ON OFF button CHECK button A MITSUBISHI ELECTRIC ON OFF a TEMP AUTO STOP Z 0 0 VANE AUTOSTAR N SE h LOUVER gt gt gt 26 FAN Kb MODE CHECK TEST RUN min D SET RESET CLOCK o o o v Procedure 1 Press the CHECK button twice Refrigerant address display 2 Press the temperature amp Temperature buttons f button 3 Point the remote controller at the sensor on the indoor unit and press the HOUR button HOUR button 4 Point the remote controller at the sensor
16. l CH BLU aan eri 8155 z J i CNAC UKI KE RE 1 2 V i WHT EE n JWH onse CNB S yt WH wHT WHD GRN YLW l ru 112 112 R R a i sw22 B R Bir conga ID K T J o WK le LIE en SBE age LE UE 12345678910 L 1 1 KID K i 5 UB O o R B Symbol Name Symbol Name Auto grille controller board Wireless remote controller board FUSE Fuse 3 15A Emergency switch heating down Emergency switch cooling up Limit switch storage detection LS Jet switch tension detection Jop Wired remote controller WB Indoor controller board 2 Check point of trouble lt LED display gt Turn OFF No power supply Blink Storage detection switch ON short One blink Storage detection switch OFF open Two blinks Tension detection switch OFF open lt controller board gt Check item Up down controller P C board supply Check point Normal Remarks CN3A between 3 5 AC198 264V voltage Up down machine supply voltage Check when instructing up down with LED CN2B CN2C blinking once DC10 12V lt Up down machine gt Check item Check point Normal Check contents Storage detection switch CN2E open or short Check if it is short when pressing push switch Tension detection switch CN2F CN2G open or short Check if it is short when wire b is tensioned CN2B CN2C 5 20Q Check if it is not open or short Entwining wires Pull wire
17. on the indoor unit and press the ON OFF button 13 e CHECK lights and refrigerant address 00 flashes e Check that the remote controller s display has stopped before continuing e 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 e If an air conditioner error occurs the indoor unit s sensor emits an intermit tent 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 e Refer to the following tables for details on the check codes Output pattern A Beeper sounds Beep nt Sei Ei PS OPERATION 1 Repeated INDICATOR lamp flash Tn tn On O o o On pattern Self check ran 5 5 sec 0 5 sec 0 5 sec 0 5 sec 0 Y ae Approx 2 5 sec 0 5 sec 0 5 sec starts Ae v J Start signal Deg eg received Number of flashes beeps in pattern indicates the check Number of flashes beeps in pattern indicates code in the following table i e n 5 for P5 the check code in the following table Output pattern B Beeper sounds Beep Kei e e Beep Beep OPERATION ae 2 R Repeated INDICATOR lamp flash Off On On On On ou Off On On On pattern Self check Approx 2 5 sec Approx 3 sec 0 5 sec 0 5 sec 0 5 sec 0 5 sec A
18. short circuit or miswiring converse wiring of indoor outdoor unit connecting wire O Defective transmitting receiving circuit of indoor controller board Defective transmitting receiving circuit of indoor controller board O 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 O 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 O O 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 O Defective transmitting receiving circuit of indoor controller board O Noise has entered into power supply Noise has entered into outdoor control wire Turn the power off and on again to check If abnormality generates again replace indoor controller board Indoor controller board Abnormal if data cannot be read normally from the nonvolatile memory of the indoor controller board O Defecti
19. the malfunction of drain up machine 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 22 9 6 HOW TO CHECK THE PARTS PLA RP100BA3 Parts name Check points Room temperature Disconnect the connector then measure the resistance with a tester thermistor TH1 At the ambient temperature of 10 C 30 C Pipe temperature thermistor liquid TH2 Normal Abnormal Condenser Evaporator 4 3kQ 9 6kQ Open or short temperature thermistor TH5 Refer to the thermistor Vane motor MV Measure the resistance between the terminals with a tester At the ambient temperature of 20 C 30 C amp Connector Normal Abnormal Red Yellow 0 6 5 03 0 08 Red Blue O 0 O O 0 0 6 Blue Yellow Red Orange 0 0 5 0 0 0 Red White 0 0 6 0
20. Changes for the Better MITSUBISHI ELECTRIC SPLIT TYPE HEAT PUMP AIR CONDITIONERS SPLIT TYPE AIR CONDITIONERS April 2009 No OCH459 SERVICE MANUAL Series PLA Ceiling Cassettes R410A Indoor unit f NOTE Model names Service Ref THIS ain lia a useaa mmer PLA RP100BA3 SN e RoHS compliant prod ucts have lt G gt mark on the spec name plate CONTENTS 1 REFERENCE MANUAL saannnnmama aan ma maannut 2 2 SAFETY PRECAUTION sees eesseeeeee mamman unnn 3 3 PART NAMES AND EUNGCTIONS eent 4 AUS PEGIEIGATI ONS ee 7 5 NOISE CRITERION CURVES nuuuuaaana maana 8 6 OUTLINES AND DIMENSIONS En 9 EES 7 WIRING DIAGRAM ee NEEN en 10 indication 8 REFRIGERANT SYSTEM DIAGRAN 11 INDOOR UNIT 9 TROUBLESHOOTING EENS 12 10 SPECIAL FUNCTION aan aauounaa munana nm maa maan 27 11 DISASSEMBLY PROCEDURE nennen 36 PARTS CATALOG OCB459 man pore MrS CONTROLLER CONTROLLER 1 REFERENCE MANUAL OUTDOOR UNIT S SERVICE MANUAL Service Ref Service Manual No PU H P100VHA 2 UK 00379 PU H P100YHA 2 UK PUHZ P100VHA3 UK OCH415 0CB415 PUHZ P200YHA3 OCH424 0CB424 PUHZ HRP100VHA2 OCH425 OCB425 PUHZ HRP100YHA2 PUHZ RP100VKA OCH451 0CB451 PUHZ RP100 200YKA 2 SAFETY PRECAUTION 2 1 ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminal all supply
21. NS 1 Removing the air intake grille 1 Slide the knob of air intake grille toward the arrow O to open the air intake grille 2 Remove drop prevention hook from the panel 3 Slide the shaft in the hinge to the direction of the arrow amp and remove the air intake grille Figure 1 Air intake grille 2 Removing the room temperature thermistor TH1 1 Remove the air intake grille and the filter See Figure 1 2 Remove the 2 screws from the electrical box 3 Disconnect the connector CN20 Red from the indoor con troller board 4 Remove the room temperature thermistor and holder 3 Removing the reactor DCL Remove the air intake grille and the filter See Figure 1 Remove the 2 screws from the reactor cover Disconnect the relay connector of reactor Remove 2 reactor fixing screws and remove the reactor 1 2 3 4 4 Removing the indoor controller board I B 1 Remove the air intake grille and the filter See Figure 1 2 Remove the 2 screws from the electrical box cover 3 Disconnect the connectors CNMF White 7P for fan motor CN44 White 4P for thermistor TH2 TH5 CNP Blue 3P for drain pump CN4F White 4P for float switch CN01 Black 5P for earth and reactor CNV White 20P for vane motor 4 Remove the 6 supports from indoor controller board 5 Remove the indoor controller board 5 Removing the electrical box Remove the air intake grille and the filter See F
22. O Refer to 9 6 amp Check outdoor fan motor GOO Check operating condition of refrigerant circuit Heating mode O Check clogs of the filter Remove the blockage O Refer to 9 6 amp Check outdoor fan motor O OCheck operating condition of refrigerant circuit Pipe temperature lt Cooling mode gt Detected as abnormal when the pipe tem perature is not in the cooling range 3 min utes after compressor start and 6 minutes after the liguid 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 2 TH TH1 TH Lower temperature between liquid pipe temperature TH2 and condens er evaporator temperature TH5 TH1 Intake temperature lt Heating mode gt 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 heat ing 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 O Slight temperature difference between indoor room temperature and pipe lt liquid or condenser evaporator gt temperature thermistor e Shortage of refrigerant e Disconnected holder of pipe lt liqui
23. OFF button The unit is turned ON and OFF alternately each time the button is pressed FAN SPEED SELECT button Used to change the fan speed MODE SELECT button Used to switch the operation mode between cooling drying heating auto and fan mode CHECK TEST RUN button Only press this button to perform an inspection check or test operation Do not use it for normal operation VANE CONTROL button Used to change the air flow direction a MITSUBISHI ELECTRIC C CHECK EAN CC A WEE SITE vi AMPM O Dal 59 54 En E OO p NOT AVAILABLE IT ON OFF H TEMP JOG el FAN AUTOSTOP Po r S D gt MODE VANE AUTOSTART N G CHECK LOUVER h TEST RU min I SET RESET CLOCK i display Lights up while the signal is transmitted to the indoor unit when the button is pressed it display SET TEMP display indicates the desired temperature which is set CLOCK display Displays the current time TIMER display Displays when in timer operation or when setting timer vr 1 an er 1 display Displays the order of timer operation D O 0 0 display Displays whether timer is on or off button SET TEMPERATURE button sets any desired room temperature TIMER CONTROL buttons AUTO S
24. On wired remote controller Check code displayed in the LCD 14 e On wireless remote controller The continuous buzzer sounds from receiving section of indoor unit Blink of operation lamp e On wired remote controller Check code displayed in the LCD e If the unit cannot be operated properly after test run refer to the following table to find the cause Symptom Cais Wired remote controller LED 1 2 PCB in outdoor unit For about 2 After LED 1 2 are lighted LED 2 is For about 2 minutes following power on op PLEASE WAIT minutes after turned off then only LED 1 is eration of the remote controller is not possible power on lighted Correct operation due to system start up Correct operation PLEASE WAIT Error code Subsequent to about 2 minutes after power on Display messages do not appear even when operation switch is turned ON operation lamp does not light up Only LED 1 is lighted gt LED 1 2 blink 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 Only LED 1 is lighted LED 1 blinks twice LED 2 blinks once Incorrect wiring between indoor and outdoor units incorrect polarity of S1 S2 S3 e Remote controller wire short On the wireless remote controller with condition above following phenomena take place e No signals from the remote c
25. PACITY CORD See table 2 0 C 15kQ 25 C 5 4kQ DETECT SWE CONNECTOR EMERGENCY OPERATION OPTION PART PLA RP100BA3 X1 RELAY DRAIN PUMP W B PCB FOR WIRELESS REMOTE CONTROLLER ZNR01 02 VARISTOR BZ BUZZER DCL REACTOR LED1 LED OPERATION INDICATION GREEN DP DRAIN UP MACHINE LED2 LED PREPARATION FOR HEATING ORANGE FS DRAIN FLOAT SWITCH RU RECEIVING UNIT SW1 EMERGENCY OPERATION HEAT DOWN SW2 EMERGENCY OPERATION COOL UP TBS DeL 2 PJE TRANSMISSION YLW pe WIRES DC12V REMOCON CN22 BLU 3 E WIRELESS CN90 3 AUTO GRILLE WHT CN3G 1 4 I SEE I SEE SENSOR SENSOR MOTOR CN4Y CN6Y AUTO GRILLE POWER CNAC FLOAT SW LIOUID PIPE INTAKE CN4F CN44 CN WHT WHT RED 4 i 4 2 FAN CNMF RECTIFICATION OUTDOOR 1 CN01 BLK DSA ZNR02 U TB4 YINYIN Ra ORN ORN zl s3 ORN N BRN BLK 9 9 0 0 9 oO O 99 SEE TH2 TH5 TH1 CORNER PANEL OPTION PART Notes 1 Symbols used in wiring diagram above are Terminal block 000 2 Indoor and outdoor connecting wires have polarities make sure to match terminal numbers S1 S2
26. RVES PLA RP100BA3 NOTCH SPL dB High 40 o Medium1 37 e 0 Medium2 34 i i Low 32 60 90 T T J J 5 Se s 80 N i t q bh oO mis 4 4 oO 2 E T q q S t q bh 70 4 4 i i NN N 50 4 i i NC 50 40 30 E 4 ii WE A OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB 20 APPROXIMATE THRESHOLD OF TI HEARING FOR CONTINUOUS NOISE 10 T d NC 20 63 125 250 500 1000 2000 4000 800 BAND CENTER FREQUENCIES Hz 0 CEILING UNIT EE 1 5m O MICROPHONE 6 OUTLINES AND DIMENSIONS PLA RP100BA3 Unit mm Ceiling hole 20545 LL 860 910 112045 810 V N Fresh air F Suspension boll pitch ja Detail connecting of branch duct Both as
27. S3 for correct wirings 3 Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring diagram for servicing 4 This diagram shows the wiring of indoor and outdoor connecting wires specification of 230V adopting superimposed system for power and signal 1 If indoor and outdoor units have separate power supplies refer to Fig 1 2 For power supply system of this unit refer to the caution label located near this diagram Please set the voltage using the remote controller For the setting method please refer to the indoor unit Installation Manual KKK AUTOMATIC FILTER ELEVATION PANEL OPTION PART Connector 1 H 1 Wed 1 CN3G 1 Fig 1 Cum p BLK l 2 YLW RED Tee Sb ORN BLU de GRNYW YLW DEN S1 ORN BRN s 5 5 1 3 INDOORJOUTDOOR OC COMMUNICATION BLU 10 x Be sure to turn off the source power and then disconnect fan motor connector Failure to do so will cause trouble in Fan motor POWER SUPPLY 1PHASE 230V 50Hz fro OUTDOOR UNIT UNIT E OUTDOOR 8 REFRIGERANT SYSTEM DIAGRAM PLA RP100BA3 Strainer 50 Heat exchanger Refrigerant GAS pipe connection Flare Thermistor TH5 Cond Eva temperature Refrigerant flow in co
28. TOP 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 4 SPECIFICATIONS Service Ref PLA RP100BA3 Mode Cooling Heating Power supply phase cycle voltage Single phase 50Hz 230V Input 0 15 0 14 Running current 1 00 0 94 External finish Panel Munsell 6 4Y 8 9 0 4 Heat exchanger Plate fin coil Fan Fan drive x No Turbo fan direct x 1 Fan motor output KW 0 120 Airflow Low Medium2 Medium1 High ms min CFM 20 23 26 30 710 810 920 1 060 External static pressure Pa mmAq O direct blow Booster heater Operation control amp Thermostat Remote controller amp built in Noise level Low Medium2 Medium1 High 32 34 37 40 Field drain pipe O D in 32 1 1 4 Dimensions in UNIT 840 33 1 16 PANEL 950 37 3 8 i UNIT 840 33 1 16 PANEL 950 37 3 8 UNIT 298 11 3 4 PANEL 35 1 3 8 Weight UNIT 26 57 PANEL 6 13 Z 5 oc Q O a Z 5 NOISE CRITERION CU
29. Up down operation mode 3 Press the Ventilation button After a while it will switch to the individually specified up down operation mode Up down operation mode Individually specified up down operation mode e IIx S SEI LI g S SI Unit No J Refrigerant address No Ya In the upper right figure the air conditioner A for which the refrigerant address is 00 If the number of the target air and the unit No is 1 is currently If the number of the target air conditioner is unknown go to 4 Selected conditioner is known go to 5 nn UU e N 4 If you press the FILTER button when the Unit No or Refrigerant address No is blinking after a while the up down airflow direction of the displayed air conditioner will be switched downward and the airflow direction of the other vents will all be blocked m In Step 5 described below identify the target Remarks air conditioner by changing the Unit No and m If Err is displayed when you press the FILTER button to check the target Refrigerant address No and by pressing the FILTER air conditioner the air conditioner with that Unit No or Refrigerant button to check the up down airflow direction address may not exist Check and set that air conditioner again 5 Select the Unit No and Refrigerant address No m Unit No and Refrigerant address No c
30. al O Red Yellow Orange Red Blue a Open or short Red Orange R Red e Blue Yellow Red White 23 9 6 1 Thermistor lt Thermistor for lower temperature gt lt Thermistor Characteristic graph gt Thermistor for Room temperature thermistor TH1 lower temperature Pipe temperature thermistor liguid TH2 Condenser evaporator temperature thermistor TH5 CH Thermistor Ro 15kQ 3 a Fixed number of B 3480 2 S Rt 15exp 3480 273 t 273 oC 15kQ 10C 9 6kQ 20C 6 3kQ 25C 5 4kQ 30C 4 3kQ 0 40 C 3 0kQ 20 10 0 10 20 30 40 50 Temperature C 9 6 2 DC Fan motor FAN MOTOR INDOOR CONTROLLER BOARD Check method of DC fan motor fan motor indoor controller circuit board O 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 Wiring contact check Contact of fan motor connector CNMF 4 S Is there contact failure gt gt Yes gt 4 No Power supply check Remove the connector CNMF Measure the voltage in the indoor controller circuit board TEST POINT Voc between 1 and 4 of the fan connector Voc DC310 340V TEST POINT O
31. an be changed by using the TEMP buttons A v when the panel displays a or b m Every time you press the Mode selection button the target of operation will change as illustrated below et p ser itl x Lis E 00 1 og N N I e a Unit No selection c Standby for up down operation display display Remarks set Lis l i l i i TA m Each pressing action changes the unit No from 1 4 to 0 i Unit No O means that all of 1 4 are targeted b Refrigerant address No selection display m Each press changes the Refrigerant address from 0 to 15 6 Continue to press the Mode selection button until Waiting for up down operation is displayed a ITa 1 ag U ei Waiting for up down operation display The following steps are the same as steps 3 6 described in the General Operation section Refer to that section Operation status display A MITSUBISHI ELECTRIC Down Up buttons for selecting unit No and refrigerant address Button to exit the up down operation mode OD ONOFF Buttons to enter the up down operation mode Hold them down simultaneously for 2 seconds OhOO OMENU our Full E vue CO CO C e BACK MONTORSeT DAY S SH oe TEST CA OO PAR2IMAA Soot VOPERATION Mode selec
32. d or condenser evaporator gt thermistor e Defective refrigerant circuit O Converse connection of extension pipe on plural units connection amp Converse wiring of indoor outdoor unit connecting wire on plural units connection O Defective detection of indoor room temperature and pipe lt condenser evaporator gt temperature thermistor O Stop valve is not opened completely 17 O O Check pipe lt liquid or condenser evapora tor gt temperature with room temperature display on remote controller and outdoor controller circuit board Pipe lt liguid or condenser evaporator gt temperature display is indicated by set ting SW2 of outdoor controller circuit board as follows controller circuit board after connecting Conduct temperature check with outdoor A Control Service Tool PAC SK52ST OO Check converse connection of extension pipe or converse wiring of indoor outdoor unit connecting wire Error Code Abnormal point and detection method Cause Countermeasure Pipe temperature thermistor Condenser Evaporator TH5 O The unit is in 3 minute resume protec tion mode if short open of thermistor is detected Abnormal if the unit does not get back to normal within 3 minutes The unit returns to normal operation if it has been reset normally O Constantly detected during cooling drying and heating operation except defrosting Short 90 C or more Open 40 C or less O Defecti
33. door unit There is no unit corresponding to refrigerant address 0 20 O 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 O Set refrigerant address using SW1 3 6 on outdoor controller circuit board Phenomena Note Refer to the manual of outdoor unit for the detail of remote controller 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 Check indoor outdoor unit connecting wire for connection failure When LEDI is lit O Miswiring of remote controller wires Under twin triple indoor unit system 2 or more indoor units are wired together O Refrigerant address for outdoor unit is wrong or not set Under grouping control system there are some units whose refrigerant address is 0 amp Short cut of remote controller wires O Defective remote controller O Check the connection of remote con troller 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 O Check the setting of refrigerant address in case of grouping control system If there are some units whose refrigeran
34. e When you want to stop the air intake grille while it is lowering press the Stop or Up button on the remote controller to stop at that position L Wan ee Wireless remote 3 Remove the filter or air intake grille and clean them controller for 4 Press the Up button on the remote controller to put the air intake grille in place Automatic Filter If the air intake grille is not placed in the correct position at a time the operation is automatically retried Elevation Panel When you want to stop the air intake grille while it is rising press the Stop or Down button on the remote controller to stop at that position 27 10 1 3 How to perform the up down operation using wired remote controller PAR 21MAA mGeneral Operation Raise or lower all the air intake grilles managed by the remote controller at the same time Install the remote controller in a place where you can observe all the air conditioners Otherwise the lowering grille may make contact with something and cause damage to it 1 Ensure that the air conditioner is not running a i Ensure that the air conditioner is not running The up down operation mode is only available when the A Warning EE airconditioner is OFF 2 Press both the FILTER and Ventilation buttons simultaneously for 2 seconds or more to enter the up down operation mode Up down operation a II mode display
35. e current operation Shows the operating mode etc Multilanguage display is available Day of Week Shows the current day of the week Time Timer Display timer is set Shows the current time unless the simple or Auto Off If the simple or Auto Off timer is set the time to be switched off is shown Sensor indication Displayed when the remote controller sensor is used Locked indicator Indicates that remote controller but tons have been locked A MITSUBISHI ELECTRIC Centrally Controlled indicator Indicates that operation from the remote controller has been prohib ited by a master controller TIME SUN MON TUE WED THU FRI SAT men 101 10 Hr o AFTER CTT gt 1 1 AFTER or OR CODE FUNEHON gare ONC B 10101 FC s ER Sal WEEKLY SELD SIMPLE LINI DOUD RE AUTO OFF Clean The Filter indicator To be displayed on when it is time to clean the filter Timer indicators The indicator comes on if the corre sponding timer is set Timer is Off indicator Fan Speed indicator Shows the selected fan speed tor Up Down Air Direction indica Indicates that the timer is off Temperature Setting Shows the target temperature
36. e of thermistor wiring O Defective refrigerant circuit is causing thermistor temperature of 90 C or more or 40 C or less Defective indoor controller board Check resistance value of thermistor For characteristics refer to P1 above Check contact failure of connector CN44 on the indoor controller board Refer to 9 7 Turn the power on and recheck operation after inserting connector again O Check pipe lt liquid gt temperature with remote controller in test run mode If pipe lt liguid gt temperature is extremely low in cooling mode or high in heating mode refrigerant circuit may have defects Check pipe lt liguid gt temperature with remote controller in test run mode If there is extremely difference with actual pipe lt liguid gt temperature replace indoor controller board Turn the power off and on again to operate after checking Contact failure of drain float switch CN4F Extract when the connector of drain float switch is disconnected and of connector CN4F is not short circuited Constantly detected during operation O Contact failure of connector Insert failure O Defective indoor controller board O Check contact failure of float switch connector Turn the power on again and check after inserting connector again Operate with connector CN4F short circuited Replace indoor controller board if abnormalit reappears Drain over flow protection ope
37. ection Flared connection 3 8 inch 5 8 inch 7 WIRING DIAGRAM PLA RP100BA3 VANE CNV WHT 2018 16 14 12 10 8 dGoggddele 191919191919 6 42 AA ololo D amp LED3 LED2 LEDI 3 INDOOR OUTDOOR COMMUNICATION CN3C ES BLU 12 DC280V LEGEND SYMBOL NAME SYMBOL NAME lt Table 1 gt SW1 MODEL SELECTION LB INDOOR CONTROLLER BOARD MF FAN MOTOR Swi CN2L CONNECTOR LOSSNAY MV VANE MOTOR MODELS SETTING CN32 CONNECTOR REMOTE SWITCH TB2 TERMINAL BLOCK Indoor unit Power option 1234 CN41 CONNECTOR HA TERMINAL A TB4 TERMINAL BLOCK INDOOR OUTDOOR CONNECTING LINE PLA RP100BA3 alata af o CNS CONNECTOR CENTRALLY CONTROL TB5 TB6 TERMINAL BLOCK REMOTE CONTROLLER DSA SURGE ABSORBER TRANSMISSION LINE FUSE FUSE T6 3AL250V THI ROOM TEMP THERMISTOR LED1 POWER SUPPLY I B OC 15KQ 25 C 5 4kQ DETECT LED2 POWER SUPPLY R B TH2 PIPE TEMP THERMISTOR LIQUID lt Table 2 gt SW2 CAPACITY CODE LED3 TRANSMISSION INDOOR OUTDOOR OC 15kQ 25 C 5 4kQ DETECT SW1 SWITCH MODEL SELECTION See table 1 THS COND EVA TEMP THERMISTOR ODE SW2 SETTING SW2 SWITCH CA
38. en it is not the above mentioned problem of O O 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 O Abnormal if remote controller could not find blank of transmission path for 6 sec onds and could not transmit Error code E3 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 O Abnormal if indoor controller board could not find blank of transmission path Error code E5 O Indoor controller board receives trans mitted data at the same time and com pares the received and transmitted data Abnormal if these data are judged to be different 30 continuous times Error code E5 O 2 remote controllers are set as main In case of 2 remote con trollers amp Remote controller is connected with 2 indoor units or more Repetition of refrigerant
39. forming 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 3 3 Service tools Use the below service tools as exclusive tools for R410A refrigerant Tool name Specifications Gauge manifold Only for R410A Use the existing fitting specifications UNF 1 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 weg Gas leak detector Use the detector for R134a R407C or R410A Adaptor for reverse flow check Attach on vacuum pump Refrigerant charge base gt Refrigerant cylinder Only for R410A Top of cylinder Pink Cylinder with syphon Refrigerant recovery eguipment 3 PART NAMES AND FUNCTIONS Drain pipe Filter Air outlet Liguid pipe Gas pipe i see sensor option Air intake Intake grille e 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 th
40. igure 1 Remove the 2 screws from the electrical box cover Disconnect the connectors Refer to 4 Remove 2 electrical box fixing screws and remove 2 hooks Pull the electrical box lt Electrical parts in the electrical box gt Indoor controller board Terminal block TB4 TB5 1 2 3 4 5 Fixing screw reactor Fixing screw Electrical box cover Electrical box Photo 2 ant Electrical box e Fixing screw 1 j Bell mouth Room temp D thermistor TH1 Turbo fan Electrical box Electrical box Fixing screw Indoor controller board I B 36 OPERATING PROCEDURE PHOTOS amp ILLUSTRATIONS 6 Removing the fan and fan motor MF 1 Remove the electrical box See Photo 2 2 Remove the bell mouth 3 screws See Photo 2 3 Remove the turbo fan nut 4 Pull out the turbo fan 5 Remove the wire cover 3 screws 6 Remove 2 wiring clamps 7 Disconnect the connector of the fan motor CNMF 8 Remove the 3 nuts and washers and rubber mounts of the fan motor Photo 3 Coil plate Fan motor Wire cover fixing screw Nut Washer Rubber mount 7 Removing the panel 1 Remove the air intake grille and the filter See Figure 1 2 Disconnect the connector CNV White 20P Corner panel See Figure 2 3 Remove the corner screw 4 Slide the corner panel to the direction of the arrow O and remove the corner panel Panel See Photo 4 5
41. iling s L L Filter lt Z 5 Air intake grille Receiver DEFROST STAND BY lamp W PT lt Operation lamp N x Air intake grille 2 L W Vane motor IN A Note Please choose the grille from a standard grille auto grille 2 500 83 36 2 As for drain pipe please use VP 25 0 D 432 PVC TUBE j Air outlet hole U Pai Drain pump is included 950 Max lifting height is 850mm from the ceiling 3 As for suspension bolt please use M10 or W3 8 Procured at local site 4 Electrical box may be removed for the service purpose n Make sure to slack the electrical wire little bit for control power wires connection Indoor uni Indoor uni 5 The height of the indoor unit can be adjusted with the grille attached o 6 For the installation of the optional high efficiency filter or optional multi functional casement ve S 1 Reguires 440 mm or more space between transom and ceiling for the installation 2 Add 135 mm to the dimensions marked on the figure 3 Optional high efficiency filter must be used jointly with optional multi functional casement 7 When installing the branch ducts be sure to insulate adeguately 3000mm or more gon oF mon Otherwise condensation and dripping may occur homeo It becomes the cause of dew drops Water dew For high 8 As for necessary installation service space please refer to the left figure attachment Models e Refrigerant pipe Refrigerant pipe PLA RP100BA3 OO aan E E ON Floor Flared conn
42. ion automatically set point set temperature by R C remote controller 4 6 8C 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 C standby unit stops 1 unit operation 33 e System constraint This function is available only in cooling mode Ex Set temp by R C 20C Ir 2nd stage cut in function Request code number 322 324 Set point 26C i When request code number is 323 i Room temp 2 Set point Room temp lt Set point 4 C i Start operation Sub unit start operation Sub unit stop 26C 2nd unit Cut in Main i IC 1 4 degree C i i Sub 22C 2nd unit Cut out i i i IC 2 20 C PI KSS wet MITEN EELER AE m 10 5 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 NOTE 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 1 Request Code List Rotation setting Setting No A Initial Reguest code Una contents setting No 1 310 No 2 311 No 3 312 No 4 313 No 5 314 No 6 315 No 7 316 No 8 317 No 9 318 Monitoring the req
43. jan il PA 3 Press the TEMP v button After a while the air intake grille will begin lowering Stand by for lowering YI Menge STAND BY Note display gt You cannot stop the operation while the air intake grille is lowering N 4 If you press the A button while moving down the air intake grille may stop lowering but it Lowering display Ee SA will not stop immediately i N i N blinking A By default the air intake grille will automatically stop at the lowering distance of 1 6 m g TJ 4 N from the ceiling level St d displ The distance can be changed to 1 2 m 2 0 m 2 4 m 2 8 m 3 2 m 3 6 m and 4 0 m G K Ges R aie LI These should be used only as a guide You should lower the air intake grille yourself to check when finished lowering ani the exact distance 4 Remove the filter and or air intake grille to clean them 5 Press the TEMP 4 button After a while the air intake grille will begin to rise and then be put back into place Stand by for raising display daily STAND EY SEHR SEW Raising display blinking ally 2 Note BE You cannot stop the operation while the air intake grille is rising A KG A 4 H you press the y button while moving up the air intake grille may Stopped display when the air intake I J1I stop rising but it will not stop immediately grille has been
44. not receive any transmission normally from indoor unit of refrigerant address 0 for 3 minutes Error code EO O Abnormal if sub remote controller could not receive any signal for 2 minutes Error code EO O 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 Indoor controller board cannot receive any signal from remote controller for 2 minutes Error code E4 O Contact failure at transmission wire of remote controller O All remote controllers are set as sub remote controller In this case EO is displayed on remote controller and E4 is displayed at LED LED1 LED2 on the outdoor controller circuit board amp Miswiring of remote controller O Defective transmitting receiving circuit of remote controller Defective transmitting receiving circuit of indoor controller board of refrigerant addresses 0 G Noise has entered into the transmission wire of remote controller O Check disconnection or looseness of indoor unit or transmission wire of remote controller O Set one of the remote controllers main if there is no problem with the action above amp Check wiring of remote controller Total wiring length max 500m Do not use cable x 3 or more The number of connecting indoor units max 16 units The number of connecting remote control ler max 2 units Wh
45. oling Refrigerant flow in heating Refrigerant LIQUID pipe connection Cr Flare oO Thermistor TH2 Thermistor TH1 Pipe temperature Liquid Room temperature Distributor Strainer 50 with strainer 50 11 9 TROUBLESHOOTING 9 1 TROUBLESHOOTING lt Error code display by self diagnosis and actions to be taken for service summary gt 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 Unit conditions at service Error code Actions to be taken for service Summary Displayed The trouble is reoccurring Judge what is wrong and take a corrective action according to 9 3 Self diagnosis action table Not displayed Conduct troubleshooting and ascertain the cause of the trouble according to 9 4 Troubleshooting by inferior phenomena The trouble is not reoccurring O 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 amp Reset error code logs and restart the unit after
46. on OFF N i N i d d Configuration OFF A d d d Configuration OFF N A d d i d Configuration OFF N A i N i N d d 12345678910 12345678910 12345678910 12345678910 Lowering distance 2 8 m Lowering distance 3 2m Lowering distance 3 6 m Lowering distance 4 0m Rough Indication of Rough Indication of Rough Indication of Rough Indication of the Ceiling Height 3 6 m 4 0 m the Ceiling Height 4 0m 4 4m the Ceiling Height 4 4m 4 8m the Ceiling Height 4 8m 5 2m ene dal e OPM NKNKNNU ne Orr Mllgektdh nn 22 ekdtdig 12345678910 12345678910 12345678910 12345678910 30 10 3 ELECTRICAL CIRCUIT 1 Wiring diagram Panel Panel 1 Indoor unit i LS1 gt Ten BUR a dE J N TAS N NW 5 i LB I Lsa ose T l asti o Cen i lo WHT 1 2 et S 211 444 WHT I I7 WHT CN2G 5H i I BLK PII i i 6 i CN3G l FUSE ZH Ee BLK I
47. ontroller can be received e Operation lamp is blinking The buzzer makes a short ping sound 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 microcomputer always lit Indicates whether control power is supplied Make sure that this LED is 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 15 9 3 SELF DIAGNOSIS ACTION TABLE Error Code Abnormal point and detection method Note Refer to the manual of outdoor unit for the details of display Cause such as F U and other E Countermeasure Room temperature thermistor TH1 O 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 min utes The unit returns to normal opera tion if it has been reset normally amp Constantly detected during cooling drying and heating operation Short 90 C or more Open 40 o
48. pects intake nole U da NY j Cut out hole gt gt E SIS 2 i gt Wi y H ri i Remote controller i T EIS terminal block s x x Indoor tei unit a JA b Branch duct hole connecting ien inal block Zgo IS S gt j Swe 8 2 0 lt Branch duct hole 38 S 175 350 14 428 Indoor power sph s K Burring hole pitch Burring hole terminal blotk Option par 3 l 150 L i ee gl Cut out hole E i 2 sl o e i al Si x DS leid E Lis Detail drawing of fresh air intake hole Burring hole Sg 187 5 160 7 3 42 8 23 ole pi Suspension bolt 840 SN M10 or W3 8 d Drain pipe Connected the attached connected to VP 25 flexible pipe or socket Cut out hole a 100 f Keep approximately J 10 to 15mm space between unit ceiling and ceiling slab S Rilo Ceiling Sisi Sisin 7 7 In case of standard grille PLP 6BA PLP 6BAMD 3 Power supply wire lower edge N Indoor unt Outdoor unit Control wire entry connecting wire entry 597 Air intake hole Drain hole fe 7 Drain pump clean hole In case of auto grille PLP 6BAJ Me LA ae In case of wireless remote controller PLP 6BALM_ Auto grille l a Emergency operation Air intake grille up down distance Auto vane switch lt Cooling gt and Air outlet Emergency Up Down switch lt Up gt Emergency operation o 2 switch lt Heating gt and 2 2 Emergency Up Down switch lt Down gt 7 g gz a 5 de Zi CS SIS Ce
49. pprox 2 5 sec Approx 3 sec 0 5 sec 0 5 sec starts N W J Start signal d le SE received Number of flashes beeps in pattern indicates the check Number of flashes beeps in pattern indicates code in the following table Le n 5 for U2 the check code in the following table Output pattern A Errors detected by indoor unit Wireless remote controller Wired remote controller Beeper sounds OPERATION Symptom Remark INDICATOR lamp flashes Check code Number of times 1 P1 Intake sensor error 2 P2 Pipe TH2 sensor error P9 Pipe TH5 sensor error 3 E6 E7 Indoor outdoor unit communication error 4 P4 Drain sensor error Float switch connector CN4F open 5 P5 Drain pump error PA 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 10 11 12 Fb Indoor unit control system error memory error etc EO E3 Remote controller transmission error E1 E2 Remote controller control board error Output pattern B Errors detected by unit other than indoor unit outdoor unit etc Wireless remote controller Wired remote controller Beeper sounds OPERATION Symptom INDICATOR lamp flashes Check code ymp Remark Number of times Indoor outdoor unit communication error
50. put back into place i il x 6 Exit the up down mode either by pressing the ON OFF button or by pressing both the FILTER and Ventilation buttons simultaneously for 2 seconds or more After exiting the up down mode wait for about 30 seconds to perform the next operation The remote controller will not Operation status accept any operation for that period display Ja MTSUBISH ELECTRIC Button to exit the up down operation mode Down Up buttons S ry TEMP K KOEN E Buttons to enter the up down D nge OMENU emp ful operation mode Press them simultaneously for 2 seconds 28 m Up down operation with the individual specified air conditioner when used in combination with Mr SLIM model Raise or lower the air intake grille of the specific air conditioner that you select from all that are managed by that remote controller 1 Ensure that the air conditioner is not running The up down operation mode is only available when the air conditioner is OFF 2 Press both the FILTER and Ventilation buttons simultaneously for 2 seconds or more to enter the up down operation mode H N Ensure that the air conditioner is not running AN Warning Otherwise it may cause an injury or a failure
51. r less O Defective thermistor characteristics Contact failure of connector CN20 on the indoor controller board Insert failure amp Breaking of wire or contact failure of thermistor wiring O Defective indoor controller board Check resistance value of thermistor OC 15 0kQ 10C 9 6kQ 20C 6 3kQ 30C 43ko 40C 3 0ko If you put force on draw or bend the lead wire while measuring resistance value of thermis tor breaking of wire or contact failure can be detected O Check contact failure of connector CN20 on the indoor controller board Refer to 9 7 Turn the power on again and recheck opera tion after inserting connector again O 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 checking Pipe temperature thermistor Liguid TH2 O 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 min utes The unit returns to normal opera tion if it has been reset normally Constantly detected during cooling drying and heating except defrosting operation Short 90 C or more Open 40 C or less O Defective thermistor characteristics Contact failure of connector CN44 on the indoor controller board Insert failure amp Breaking of wire or contact failur
52. ration O When the drain float switch senses underwater condition for 1 minute and 30 seconds continuously while the drain pump is on abnormality detection will be deferred and indoor fan will be turned off Drain pump malfunction if above condi tion is detected during deferred abnor mality detection amp Constantly detected during drain pump operation O Malfunction of drain pump amp Defective drain Clogged drain pump Clogged drain pipe amp Defective drain float switch Jamming of drain float switch or malfunction of moving parts causing drain float switch to detect under water condition Switch On Defective indoor controller board 16 O Check if drain pump works Check drain function 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 O Replace indoor controller board if it is short circuited between 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 Error Code Abnormal point and detection method Cause Countermeasure Freezing overheating protection is work ing O Freezing protection Cooling mode The unit is in 6 minute
53. re controller 533 x S given in the table on the left x in the table indicates the jumper wire is dis connected JP1 Unit type Mags E There is no jumper JP1 because these models setting Without THS O have the cond eva temperature thermistor TH5 With TH5 x Indoor gei controller Indoor controler Zen type G b dt or produc iw ype Service parts O 26 10 SPECIAL FUNCTION 10 1 HOW TO PERFORM THE UP DOWN OPERATION OF THE AIR INTAKE GRILLE 10 1 1 Setting up the lowering distance of air intake grille Decorative JA You can set up 8 different stages of lowering distance for the air intake grille according to the set up location if desired Asafactory default the decorative panel will automatically stop at 1 6 m from the ceiling surface The distance is a rough indication check by actually lowering it 1 Take the cover off the electric box 2 screws 2 Set up the dip switches of SW22 on the control board as followed SW22 Lowering distance Set Up Lowering distance 1 2m Lowering distance 1 6 m Initial setting Rough Indication of Rough Indication of the Ceiling Height 2 4 m the Ceiling Height 2 4 m 2 8 m Cover for Electric Box A Control board ON ON D Configuration OFF ihn Configuration OFF dv SE SW22 12345678910 12345678910 eum SE EAD Airflow outreach distance is different the Gelling Height 2 8m 3 2m the Ceiling
54. resume preven tion mode if pipe lt liguid or condenser evaporator gt temperature stays under 15 C for 3 minutes 3 minutes after the compressor started Abnormal if it stays under 15 C for 3 minutes again within 16 minutes after 6 minute resume pre vention mode Overheating protection Heating mode The units is in 6 minute resume prevention mode if pipe lt liquid or con denser evaporator gt temperature is detected as over 70 C after the com pressor started Abnormal if the tem perature of over 70 C is detected again within 30 minutes after 6 minute resume prevention mode Cooling or drying mode O Clogged filter reduced airflow amp Short cycle of air path G Low load low temperature operation out of the tolerance range O Defective indoor fan motor Fan motor is defective e Indoor controller board is defec tive Defective outdoor fan control Overcharge of refrigerant Defective refrigerant circuit clogs Heating mode O Clogged filter reduced airflow O Short cycle of air path Over load high temperature operation out of the tolerance range O Defective indoor fan motor Fan motor is defective Indoor controller board is defec tive Defective outdoor fan control Overcharge of refrigerant Defective refrigerant circuit clogs Bypass circuit of outdoor unit is defective Cooling or drying mode O Check clogs of the filter O Remove the blockage
55. rille raised by the set distance And operation below will be repeated up to 4 times 10cm down 30cm up gt 10cm down 30cm up No load detection Case UP DOWN instruction without grille When both wire 1b and wire 2b are no loaded grille does not move amp Obstacle detection Case Making contact with something while lowering When both wire 1b and wire 2b is no loaded by making contact with something while lowering it stops and is raised by 10cm and stops again Emergency operation e When the wireless remote controller cannot be used in the case of battery discharge misplacing of the wireless remote controller malfunctioning and so on the emergency switch on the sensor can be used as an alternative When doing this particular caution must be taken not to fall To lower the air intake grille Press the button once For emergency heating operation press this button To raise the air intake grille Press the E button once For emergency cooling operation press this button SW22 Lowering distance Set Up Lowering distance 1 2m Lowering distance 1 6 m Initial setting Lowering distance 2 0m Lowering distance 2 4m Rough Indication of Rough Indication of Rough Indication of Rough Indication of the Ceiling Height 2 4m the Ceiling Height 2 4m 2 8 M _ the Ceiling Height 2 8 m 3 2 m the Ceiling Height 3 2m 3 6m ON ON ON ON Configurati
56. ring of indoor outdoor connecting at twin triple guad ruple system Room temperature thermistor liguid pipe temperature thermis tor detection is defective 19 O Check the drain pump O Check whether water can be drained O Check the resistance of the float switch O Check the connector contact failure amp Check the float switch leadwire mounted Check the filter clogging Check the piping connection O Check the indoor outdoor connecting wires Check the room temperature display of remote controller Check the indoor liquid pipe temperature dis play of outdoor controller board 9 4 TROUBLESHOOTING BY INFERIOR PHENOMENA Note Refer to the manual of outdoor unit for the detail of remote Phenomena controller Cause Countermeasure 1 LED2 on indoor controller board is off e When LED1 on indoor controller board is also off O Power supply of rated voltage is not supplied to out door uniit amp Defective outdoor controller circuit board amp Power supply of 220 240V is not supplied to indoor unit O Defective indoor controller board For the separate indoor outdoor unit power sup ply system O Power supply of 220 240V AC is not supplied to indoor unit amp The connectors of the optional replacement kit are not used Defective indoor controller board O Check the voltage of outdoor power supply terminal block L N or Ls N e When AC 220 240V i
57. s not detected check the power wiring to outdoor unit and the breaker e When AC 220 240V is detected check O below O Check the voltage between outdoor terminal block S1 and S2 e When AC 220 240V is not detected check the fuse on outdoor controller circuit board check the wiring connection e When AC 220 240V is detected check G below Check the voltage between indoor termi nal block S1 and S2 e When AC 220 240V is not detected check indoor outdoor unit connecting wire for miswiring e When AC 220 240V is detected check below O Check the fuse on indoor controller board Check the wiring connection If no problem are found indoor controller board is defective O Check the voltage of indoor power supply terminal block L N e When AC220 240V is not detected check the power supply wiring e When AC220 240V is detected check O below Check that there is no problem in the method of connecting the connectors e When there are problems in the method of connecting the connectors connect the connector correctly refer ring to installation manual of an optional kit e When there is no problem in the meth od of connecting the connectors check O below G Check the fuse on indoor controller board Check the wiring connection If no problem are found indoor controller board is defective e When LED on indoor controller board is lit O Mis setting of refrigerant address for out
58. stop operation press the 13 button O or the amp button 9 5 2 When wired remote controller or indoor unit microcomputer fails 1 When the wired remote control or the indoor unit microcomputer has failed but all other components work properly if you set the switch SWE on the indoor controller board ON the indoor unit will begin Emergency Operation When Emergency Operation is activated the indoor unit operates as follows 1 Indoor fan is running at high speed 2 Drain pump is working x 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 microcomputer has failed it is nesessary to proceed with points 2 and 3 below as in the case of the wired remote control 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 e the outdoor unit malfunctions the indoor fan malfunctions e when it has detected
59. t addresses are 0 in one group set one of the units to 0 using SW1 3 6 on outdoor controller circuit board OO Remove remote controller wires and check LED2 on indoor controller board e When LED2 is blinking check the short circuit of remote controller wires e 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 3 Upward downward vane performance failure O The vane is not downward during defrosting and heat preparation and when the thermostat is OFF in HEAT mode Working of COOL protection function O Vane motor does not rotate e Defective vane motor Breaking of wire or connection failure of connector amp Upward downward vane does not work The vane is set to fixed position O Normal operation The vane is set to horizontal regardless of remote control Check O left e Check the vane motor Refer to How to check the parts e Check for breaking of wire or connec tion failure of connector G Normal operation Each connector on vane motor side is disconnected or set ting the fixed vanes by wired remote controller 4 Receiver for wireless remote controller O Weak batteries of wireless remote controller Contact failure of connector CNB on wireless remote controller board Insert failure Contact failure of
60. the piping sealed in their packaging Torque wrench Electronic refrigerant charging scale until just before brazing Leave elbow joints etc Handle tools with care If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor Use ester oil ether oil or alkylbenzene oil small amount as the refrigerant oil applied to flares and flange connections Do not use a charging cylinder If large amount of mineral oil enters that can cause deterio ration of refrigerant oil etc If a charging cylinder is used the composition of refrigera nt will change and the efficiency will be lowered Charge refrigerant from liquid phase of gas cylinder If the refrigerant is charged from gas phase composition change may occur in refrigerant and the efficiency will be lowered Ventilate the room if refrigerant leaks during operation If refrigerant comes into contact with a flame poisonous gases will be released 1 Cautions for service 1 Perform service after 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 per
61. the screen After a while 00 appears in the refrigerant address number display area at Press the CHECK button for 3 seconds to switch to Maintenance monitor Note It is not possible to switch to Maintenance monitor during data request in maintenance mode i e while is blinking since no buttons are operative appears on the screen O when Maintenance monitor is activated The display now allows you to set a request code No Press the TEMP A and A 21 buttons to select the desired refrigerant address Press the CLOCK VY and A _ buttons to set the desired request code No 311 318 321 324 Press the FILTER button to perform function setting If above setting operations are done correctly Request code number will appear in data display area Example When the 311 of Request code number is set 311 appears on the screen Refererence Yo u can check current request code number setting by setting the request code number 310 or 320 and pressing the FILTER button O Example When the current setting is Setting No 2 Request code 311 311 appears on the screen 7 To return to normal mode press the DON OFF button 35 11 DISASSEMBLY PROCEDURE PLA RP100BA3 OPERATING PROCEDURE Be careful when removing heavy parts PHOTOS amp ILLUSTRATIO
62. tion 29 10 2 OPERATION AUTOMATIC FILTER ELEVATION PANEL PLP 6BAJ 1 Normal operation UP DOWN Air intake grille is raised lowered by instructions of UP and DOWN Air intake grille does not move under the state of no load detection or obstacle detection Air intake grille stops automatically at the set lowering lt distance from the ceiling level Detection STOP switch It stops in the cases below e When it reaches at the set lowering distance from the ceiling level It automatically stops based on the calculation at distance from the time taken to lower e When it is stored in the panel Air intake grille is judged to be stored in the panel when storage detection switch is pressed for 3 seconds continuously e When receiving instructions of STOP DOWN while moving up and UP while moving down STOP button is only for the remote controller for Automatic Filter Elevation Panel As for wired remote controller it takes several seconds to stop due to transmission speed e When both wire 1b and wire 2b are no loaded Only the wire b in each UP DOWN Machine has tension detection switch UP DOWN 2 Special operation O Re storing operation Case Catch of grille or malfunction of storage detection switch Re storing operation will be done when storage detection switch is not pressed with air intake g
63. uest code of current setting Rotation and Back up OFF Normal group control operation O Back up function only Rotation ON Alternating interval 1day and back up function Rotation ON Alternating interval 3days and back up function Rotation ON Alternating interval 5days and back up function Rotation ON Alternating interval 7days and back up function Rotation ON Alternating interval 14days and back up function Rotation ON Alternating interval 28days and back up function 2nd unit cut in setting Setting No Initial Reguest code Settingicoritents setting No 1 320 No 2 321 No 3 322 323 Cut in function ON Set point Set temp 6 C 10 8F Monitoring the reguest code of current setting Cut in function OFF O Cut in function ON Set point Set temp AC 7 2F 324 Cut in function ON Set point Set temp 8C 14 4F 34 2 Setting method of each function by wired remote controller a MITSUBISHI ELECTRIC B Refrigerant address cE C Data display area D Request code display area 3 nn O SEEN ES z D TEMP D ON OFF D Een 5 6 TABOE OMENU OON OFF e X as San Sal HECK TEST D GD 6 O e e PAR 21MAA CEAN 1 Stop operation Press the TEST button for 3 seconds so that Maintenance mode appears on
64. ve indoor controller board Replace indoor controller board Remote controller control board O Abnormal if data cannot be read nor mally from the nonvolatile memory of the remote controller control board Error code E1 amp Abnormal if the clock function of remote controller cannot be operated normally Error code E2 O Defective remote controller O Replace remote controller Forced compressor stop due to water leakage abnormality O The unit has a water leakage abnor mality 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 C 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 O Drain pump trouble O Drain defective Drain pump clogging Drain pipe clogging amp Open circuit of float switch O Contact failure of float switch connector Dew condensation on float switch Drain water descends along lead wire Drain water waving due to filter clogging Extension piping connection difference at twin triple quad ruple system O Miswi
65. ve thermistor characteristics amp Contact failure of connector CN44 on the indoor controller board Insert failure amp Breaking of wire or contact failure of thermistor wiring O Temperature of thermistor is 90 C or more or 40 C or less caused by defective refrigerant circuit Defective indoor controller board OO Check resistance value of thermistor For characteristics refer to P1 above Check contact failure of connector CN44 on the indoor controller board Refer to 9 7 Turn the power on and check restart after inserting connector again O Operate in test run mode and check pipe lt condenser evaporator gt temperature with outdoor controller circuit board If pipe lt condenser evaporator gt 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 lt condenser evaporator gt temperature with outdoor control circuit board If there is extreme difference with actual pipe lt condenser evaporator gt 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 SK52ST Remote controller transmission error E0 signal receiving error E4 O Abnormal if main or sub remote con troller can
66. ving up down This is the noise made when the wire is wound and unwound Noises are made while putting the air intake grille into place This is the operational noise for putting the air intake grille into place Air intake grille repeats rising and lowering several times while being put into place This is the operation for putting the air intake grille into place Air intake grille leans toward one side during the up down operation The speeds of winding unwinding wires are slightly different for each wire This is normal 32 10 5 ROTATION FUNCTION AND BACK UP FUNCTION 2ND STAGE CUT IN FUNCTION 10 5 1 Operation 1 Rotation function and Back up function e Outline of functions Main and sub unit operate alternately according to the interval of rotation setting x 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 e 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

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