PSA-RP71KA PSA-RP100KA PSA-RP125KA PSA
Contents
1. PSA RP71KA NOTCH SPL dB LINE PSA RP100KA NOTCH SPL dB LINE High 44 0 High 50 o o Middle 42 Middle 49 o o Low 40 ee Low 45 oe 90 gt z 90 5 _ 80 ___ t F _ 80 5 i F F 5 amp E 5 8 70 8 8 60 60 a g 5 E 50 E 50 7 7 o o 5 40 5 40 8 8 2 30 a 30 5 5 E 20 APPROXIMATE A 20 APPROXIMATE THRESHOLD OF THRESHOLD OF HEARING FOR j HEARINGFOR E CONTINUOUS CONTINUOUS NOISE i NOISE 10 t 3 10 63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz BAND CENTER FREQUENCIES Hz PSA RP125KA NOTCH SPL dB LINE PSA RP140KA NOTCH SPL dB LINE High 51 o o High 51 o o Middle 49 Midde 49 e e Low 45 o e Low 45 oe 90 T F I r i i i i 90 7 J _ 80 1 5 S 4 4 4 5 PORTH i 8 F E 2 70 1 1 I E PE E i 1NC 70 60 T heo eS 40 N 50 SNN i JNC 50 BN eet2. 30 OCTAVE BAND SOUND PRESSURE LEVEL dB 048 OCTAVE BAND SOUND PRESSURE LEVEL dB 0dB 20 APPROXIMATE 20 APPROXIMATE THRESHOLD OF iu 1 THRESHOLD OF 3 HEARING f HEARING FOR CONTINUOUS i i 4 1 CONTINUOUS JNC 20 NOISE i i i NOISE E i i 10 J i 63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz BAND CENTER FREQUENCIES Hz MICROPHONE O OCH528 9 Unit mm MOOS JO UOIPASUl 10 SMO alow JO 000 1401 4 S8008 901 195 d 9 0 10 G be a 90UJ 10 002 Za OUTLINES AND DIMENSIONS 6 PSA RP100KA PSA RP71KA PSA RP125KA PSA RP140KA 122222222274 08 0 pue 10 jnoyoouy SOL N Sopis uo papi oid 17 Buum 104 ajoy 3noyoouy 4 104 jnoxoouy 0 4 Obl ei 2 gs ly gt edid
3. DC 15 V Is the voltage normal gt Replace the fan motor No Check the operation of fan END Replace indoor controller board Ne Replace indoor controller board Check the operation END NG Replace the fan motor OCH528 20 9 5 TEST POINT DIAGRAM Indoor controller board PSA RP71KA PSA RP100KA PSA RP125KA PSA RP140KA CN90 Connect to the wireless remote controller board CNB o LED3 Transmission Indoor outdoor CN105 LED2 Power supply R B CN44 Pipe temperature thermistor 9 9 Liquid TH2 8 4 Cond Eva 5 Capacity setting CN2L Connector LOSSNAY Jumper wire J41 J42 Pair No setting for wireless CN51 Centrally control Control signal 13V pulse input Operation indicator 13VDC NEU Malfunction indicator Room temperature 13VDC 9 thermistor TH1 CN41 LED1 Connector HA terminal A Power supply SWE Emergency operation CN22 Vre Voltage between PC6722 and C955 Same as of CNMF Vsp Voltage between pins of C626 Same as of CNMF CNMF i DCOV FAN stop DC1 6 5V FAN operation A Remote controller connecting wire 10 4 14 6V DC CN3C Transmission Indoor outdoor 0
4. 4 Remove the 2 screws at the lower part of the front panel 5 Pull down the front panel to remove OCH528 27 Photo 5 lt a Swing louver 4 Controller Front panel AE Screws OPERATING PROCEDURE PHOTOS 6 Removing the louver motor 1 Remove the intake grille Refer to Procedure 1 2 Remove the electrical parts cover Refer to Procedure 2 3 Remove the front panel Refer to Procedure 5 4 Remove the 5 screws of the swing louver and remove the swing louver 5 Remove the 2 screws of the louver motor and remove the louver motor 6 Disconnect the blue connector CNP LOUVER on the indoor controller board Photo 6 1 Top panel Screws of top panel Screws of swing louver louver Swing Screws of swing louver 27 Louver motor Photo 6 2 Swing louver Screws of louver motor 7 Removing the indoor coil thermistor 1 Remove the intake grille Refer to Procedure 1 2 Remove the electrical parts cover Refer to Procedure 2 3 Remove the front panel Refer to Procedure 5 4 Remove the swing louver See Photo 6 1 5 Remove the 10 screws of the insulation panel and remove the insulation panel 6 Remove the screw of the piping cover and remove the piping cover 7 Remove the indoor coil thermistor from the holder on the copper pipe 8 Disconnect the connector CN44 on the indoor controller board OCH528 Photo
5. ScreenB im we t Press CLOCK 7 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 You can check current request code number setting by setting the request code number 310 or 320 and ressing the FILTER button Example When the current setting is Setting No 2 Request code 311 311 appears on the 7 To return to normal mode press the DON OFF button OCH528 25 11 DISASSEMBLY PROCEDURE PSA RP125KA PSA RP140KA PSA RP71KA PSA RP100KA OPERATING PROCEDURE PHOTOS 1 Removing the intake grille 1 Remove the screw at the centre of the knob of the intake grille 2 Pull the knob of the intake grille toward you 3 Remove the 2 hangers 4 Lift the intake grille to remove Photo 1 Hangers 2 Removing the indoor controller board 1 Remove the intake grille Refer to Procedure 1 2 Remove the 3 screws of the electrical parts cover and remove the electrical parts cover 3 Disconnect the fan motor connector and the other connectors on the indoor controller board See Photo 3 4 Unhook the 6 catches
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7. me min CFM 25 28 31 893 1 000 1 107 External static pressure Pa mmAq O direct blow Booster heater kW Operation control amp Thermostat Remote controller amp built in Noise level Low Middle High dB 45 49 51 Unit drain pipe O D mm in 20 13 16 Dimensions 600 23 5 8 mm in 360 14 11 64 mm in mm in 1 900 74 13 16 OCH528 kg Ibs 2 5 x Q Q Service Ref PSA RP140KA Mode Cooling Heating Power supply phase cycle voltage Single phase 50Hz 230V Input 0 11 0 11 Running current 0 73 0 73 External finish Munsell 0 70Y 8 59 0 97 Heat exchanger Plate fin coil Fan Fan drive x No Centrifugal direct x 1 Fan motor output kW 0 16 Airflow Low Middle High m min CFM 25 28 31 893 1 000 1 107 External static pressure Pa mmAq O direct blow Booster heater kW Operation control amp Thermostat Remote controller amp built in Noise level Low Middle High dB 45 49 51 Unit drain pipe O D mm in 20 13 16 Dimensions mm in 600 23 5 8 mm in 360 14 11 64 mm in 1 900 74 13 16 OCH528 kg Ibs 48 106 5 NOISE CRITERION CURVES
8. 7 1 Insulation panel Screws of insulation panel Photo 7 2 28 Piping cover Screws of insulation panel Thermistor lt Cond Eva temp gt TH5 Thermistor Pipe temp TH2 OPERATING PROCEDURE PHOTOS 8 Removing the indoor heat exchanger Photo 8 1 1 Remove the intake grille Refer to Procedure 1 2 Remove the front panel Refer to Procedure 5 3 Remove the swing louver See Photos 6 1 and 6 2 4 Remove the 6 screws of the top panel and remove the top panel See Photo 6 1 5 Remove the insulation panel See Photo 7 1 6 Remove the electrical parts cover and electrical parts box Refer to Procedure 2 7 Remove the 2 screws of the drain pan support and remove the drain pan support See Photos 8 2 and 9 8 Remove the screw of pipe support and remove the pipe support 9 Remove the 4 screws of the indoor heat exchanger Drain pan pe Drain pan gt support 10 Remove the indoor heat exchanger Screws of indoor heat exchanger Photo 8 2 Screws of drain pan support Screws of electrical parts box N Screw of lu 59 9 Removing the drain Photo 9 indoor heat Drain pan 1 Remove the intake grille Refer to Procedure 1 exchanger 2 Remove the front panel Refer to Procedure 5 3 Remove the swing louver See Photo 6 1 and 6 2 4 Remove the top panel See Photos 6 1 5 Remove the insulation panel See
9. Abnormal if 1 receiving is detected 30 times continuously though indoor controller board has transmitted 0 Defective transmitting receiving circuit of indoor controller board Noise has entered into power supply Noise has entered into outdoor control wire 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 Defective indoor controller board Replace indoor controller board Remote controller control board Abnormal if data cannot be read nor mally from the nonvolatile memory of the remote controller control board Error code E1 Abnormal if the clock function of remote controller cannot be operated normally Error code E2 Defective remote controller Replace remote controller Forced compressor stop due to water leakage abnormality When the intake temperature subtracted with liquid pipe temperature is less than 10 C drain sensor is detected whether itis soaked in the water or not at the interval of 90 seconds Drain pump will start operating when the drain sensor is detected 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 8 The drain sensor
10. Photo 7 1 6 Remove the electrical parts cover electrical parts box and the drain pan support See Photo 8 1 7 Remove the pipe support See Photo 8 2 8 Remove the indoor heat exchanger See Photo 8 1 9 Remove the drain pan Drain pan support Screws of drain pan support OCH528 29 Mir MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN Copyright 2012 MITSUBISHI ELECTRIC CORPORATION Distributed in Oct 2012 No OCH528 New publication effective Oct 2012 Made in Japan Specifications are subject to change without notice
11. are judged to be different 30 continuous times Error code E3 Abnormal if indoor controller board could not find blank of transmission path Error code E5 Indoor controller board 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 E5 2 remote controllers are set as main In case of 2 remote controllers Remote controller is connected with 2 indoor units or more 9 Repetition of refrigerant address Defective transmitting receiving circuit of remote controller Defective transmitting receiving circuit of indoor controller board 8 Noise has entered into transmission wire of remote controller Set a remote controller to main and the other to sub Remote controller is connected with only one indoor unit The address changes to a separate setting 9 6 Diagnose remote controller a When RC 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 is displayed replace remote controller c When RC E3 or ERC 00 66 is displayed noise may be causing abnormality Indoor outdoor unit communication error Signal receiving error Abnormal if indoor controller board can not receive any signal normally for 6 minutes after turning t
12. exclusive tools for R410A refrigerant No Tool name Specifications Gauge manifold Only for R410A Use the existing fitting specifications UNF 1 2 Use high tension side pressure of 5 3 or over Charge hose Only for Use pressure performance of 5 09 or over Electronic scale Gas leak detector Use the detector for R134a R407C R410A Adaptor for reverse flow check Attach on vacuum pump Refrigerant charge base Refrigerant cylinder Only for R410A Top of cylinder Pink Cylinder with syphon Refrigerant recovery equipment OCH528 4 3 PART NAMES AND FUNCTIONS Indoor Unit Disperses air Horizontal Louver up and down Swing Louver Disperses air left Air Outlet and right m Power Lamp _ ON OFF Button Controller Long Life Filter Removes dust and pollutants from intake air Intake Grille Air Intake Intakes air from room Controller Once the controls are set the same operation mode can be repeated by simply pressing the ON OFF button Operation buttons Set Temperature buttons ON OFF button Cv Down Up Fan Speed button EX MIT
13. is detected to be soaked in the water 10 times in a row b The intake temperature subtracted with liquid pipe temperature is detected 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 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 descends along lead wire Drain water waving due to filter clogging Extension piping connection difference at twin triple quadruple system Mis wiring of indoor outdoor connecting at twin triple quadruple system 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 amp Check the piping connection Check the
14. of the controller case by opening and remove the indoor controller board See Photo 3 Photo 2 Screws cover Thermistor Room temp TH1 3 Removing the room temperature thermistor 1 Remove the intake grille Refer to Procedure 1 2 Remove the electrical parts cover Refer to Procedure 2 3 Remove the room temperature thermistor See Photo 2 4 Disconnect the red connector CN20 on the indoor controller board OCH528 Catches Electrical parts Indoor controller box board 26 OPERATING PROCEDURE PHOTOS 4 Removing the indoor fan and the indoor fan motor 1 Remove the intake grille Refer to Procedure 1 2 Remove the electrical parts cover Refer to Procedure 2 Turn the bell mouth clockwise to remove Remove the fan nut and the washer Pull out the sirocco fan Remove the 2 screws of the wiring cover and remove the wiring cover 7 Remove the 3 fan motor nuts and remove the indoor fan motor 8 Disconnect the white connector CNMF on the indoor controller board 3 4 5 6 Photo 4 1 Bell mouth Sirocco fan Fan nut amp washer Photo 4 2 Indoor fan motor Screws of wiring cover i Wiring cover 5 Removing the front panel 1 Remove the intake grille Refer to Procedure 1 2 Remove the electrical parts cover Refer to Procedure 2 3 Disconnect the blue connector CN22 on the indoor controller board
15. there is extreme difference with actual pipe condenser evaporator temperature replace indoor controller board There is no abnormality if none of above comes within the unit Turn the power off and on again to operate In case of checking pipe temperature with outdoor controller circuit board be sure to connect A control service tool PAC SK52ST Error Code Abnormal point and detection method Cause Countermeasure Remote controller transmission error E0 signal receiving error E4 Abnormal if main or sub remote controller cannot receive any transmission normally from indoor unit of refrigerant address for minutes Error code EO Abnormal if sub remote controller could not receive any signal for 2 minutes Error code EO 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 Contact failure at transmission wire of remote controller All remote controllers 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 Miswiring of remote controller Defective transmitting receiving circuit of remote controller Defective
16. transmitting receiving circuit of indoor controller board of refrigerant addresses 0 8 Noise has entered into the transmission wire of remote controller 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 500m Do not use cable x 3 or more The number of connecting indoor units max 16 units The number of connecting remote controller max 2 units When it is not the above mentioned problem of Q G Diagnose remote controllers a When RC 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 displayed noise may be causing abnormality f 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 Abnormal if remote controller could not find blank of transmission path for 6 seconds 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
17. varies Power On indicator according to model Indicates that the power is on The indicator goes off after one hour at which time the airflow di rection also changes e If you press a button for a feature that is not installed at the indoor unit the remote controller will display the Not Available message If you are using the remote controller to drive multiple indoor units this message will appear only if he feature is not present at the parent unit e When power is turned ON for the first time it is normal that PLEASE WAIT is displayed on the room temperature indication For max 2 minutes Please wait until this PLEASE WAIT indication disappear then start the operation OCH528 SPECIFICATIONS INDOOR UNIT 2 gt c a 2 INDOOR UNIT Service Ref PSA RP71KA Mode Cooling Heating Power supply phase cycle voltage Single phase 50Hz 230V Input 0 06 0 06 Running current 0 40 0 40 External finish Munsell 0 70Y 8 59 0 97 Heat exchanger Plate fin coil Fan Fan drive x No Centrifugal direct x 1 Fan motor output kW 0 12 Airflow Low Middle High m min CFM 20 22 24 714 786 857 External static pressure Pa mmAq O direct blow Booster heater kW Operation control amp Thermostat Remote controller amp built in Noise level Low Mid
18. 1 UK PUHZ P100 125 140VHA3R2 UK PUHZ P125 140VHA3R3 UK PUHZ P100 125 140YHA UK PUHZ P100 125 140YHAR1 UK PUHZ P125 140YHAR2 UK PUHZ P100YHA2 UK OCH415 0CB415 PU H P71 100VHA 1 UK PU H P71 100VHA 2 UK PU H P71 100VHA 3 UK PU H P71 100 125 140Y HA 1 UK PU H P71 100 125 140Y HA 2 UK PU H P71 100 125 140Y HAR3 UK PU H P125 140YHAR4 UK IL 2 2 1 2 TECHNICAL DATA BOOK Series Outdoor unit OC379 PUHZ P VHA PUHZ P YHA PU H P VHA PU H P YHA OCH528 OCS17 507 2 SAFETY PRECAUTION 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 RP71VHA3 RP100 125 and 140 be sure to perform replacement 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 f
19. 2 POWER SUPPLY lt R B gt option for PSA RP KA models LED3 TRANSMISSION lt INDOOR OUTDOOR gt TERMINAL BLOCK SW1 SWITCH MODEL SELECTION See Table 1 TB4 lt INDOOR OUTDOOR CONNECTING LINE gt SW2 SWITCH CAPACITY CODE See Table 2 ROOM TEMPERATURE THERMISTOR SWE SWITCH lt EMERGENCY OPERATION n lt 0 C 15kQ 25 C 5 4kQ DETECT gt X1 RELAY lt LOUVER gt TH2 PIPE TEMPERATURE THERMISTOR LIQUID lt 0 C 15kQ 25 C 5 4kO DETECT gt THS COND EVA TEMPERATURE THERMISTOR lt 0 C 15kQ 25 C 5 4kQ DETECT gt ML MF THI TH5 TH2 LB 1 BLU TOR LIQUIDIPIPE ES xi MF CN2 WHT WHT RED EN UI REMOCON CN22 9 ruse LED1 LED2 LED3 INDOOT OUTDOOR DCL COMMUNICATION TR fer to tables 1 OUTDOOR land 2for service PCB o o 5 1 42 J41 TB4 xd ee OUTDOOR 4 poRe Je UNIT as TEN ORG BRN 4 T WIRE Ie DC12V 2 SS RED B3 ERAS E Sea BLU ORG ols 230V 50Hz _ _ k RNW kr ww aie Be sure to turn off the source power x 1 pmi BLU and then disconnect fan motor connector OUTDOOR Sa E mA Failure to do so will cause trouble in fan motor UNIT 1 The black square I indicates Table 1 a switch position SW1 MODELS Manufacture Service PSA RP KA LEM ON aano Table 2 When work to supply power separately to indoor and outdoor unit SW2 was applied refer to Fig 1 MODELS Manufacture Service For power supply system
20. 24V DC Fan motor DC 310 340V DC15V CNP Voltage between pins of C955 15VDC Same as of CNMF posses S i CNO1 0 Connect the Terminal Block 1 TB4 Louver motor output 220 240V AC OCH528 Indoor outdoor connecting line Between and 220 240V AC ruse CAUTION mE d esce 6 250 21 9 6 FUNCTIONS OF DIP SWITCH AND JUMPER WIRE Each function is controlled by the dip switch and the jumper wire on control P C board 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 Setting by the dip switch and jumper wire Remarks Functions For service board Model settings Manufacture Service 12345 BN ON MODELS PSA RP71KA PSA RP100KA ON Capacity OFF settings PSA RP125KA ON OFF PSA RP140KA ON OFF Initial setting gt Wireless remote controller 0 Wireless remote Control PCB setting Pair number setting with wireless remote controller controller setting 41 42 Control PCB for both J41 and J42 Four pair number settings are supported The pair number
21. Cause Countermeasure 1 LED2 on indoor controller board is off OCH528 When LED1 on indoor controller board is also off Power supply of rated voltage is not supplied to out door unit Defective outdoor controller circuit board G Power supply of 220 240V is not supplied to indoor unit Defective indoor power board Defective indoor controller board For the separate indoor outdoor unit power sup ply system Power supply of 220 240V 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 N or L3 N When AC 220 240V is not detected Check the power wiring to outdoor unit and the breaker When AC 220 240V is detected Check below Check the voltage between outdoor terminal block S1 and S2 When AC 220 240V is not detected Check the fuse on outdoor controller cir cuit board Check the wiring connection When AC 220 240V is detected Check below G Check the voltage between indoor terminal block S1 and S2 When AC 220 240V is not detected Check indoor outdoor unit connecting wire for mis wiring When AC 220 240V is detected Check below Check voltage output from CN2S on indoor power board DC13 1V Refer to 10 6 1 When no voltage is o
22. Clean The Filter indicator MITSUBISHI ELECTRIC TIME SUN MON TUE WED THU FRI SAT did EE ON els EVID AFTER E38 Centrally Controlled indicator Indicates that operation of the re mote controller has been prohib ited by a master controller ERROR CODE ur 11 1 RE FILTER Ez Fos Fal al E NIE B LUN esee OE 5 ONLYtHr a AUTOOFF Timer Is Off indicator Indicates that the timer is off Temperature Setting Shows the target temperature Caution e Only the Power on indicator lights when the unit is stopped and power supplied to the unit Comes on when it is time to clean the filter Timer indicators The indicator comes on if the corre sponding timer is set Fan Speed indicator Shows the selected fan speed Up Down Air Direction indica Room Temperature display tor Shows the room temperature Ventilation indicator The indicator N shows the direc tion of the outcoming airflow Louver display Appears when the unit is running in Ventilation mode Indicates the action of the swing louver Does not appear if the louver is stationary One Hour Only indicator Displayed if the airflow is set to weak and downward during COOL or DRY mode Operation
23. MITSUBISHI ELECTRIC SPLIT TYPE HEAT PUMP AIR CONDITIONERS SPLIT TYPE AIR CONDITIONERS SERVICE MANUAL Changes for the Better October 2012 No OCH528 Series PSA Indoor unit Model names PSA RP71KA PSA RP100KA PSA RP125KA PSA RP140KA Floor Standing R410A Service Ref PSA RP71KA PSA RP100KA PSA RP125KA PSA RP140KA Note This manual describes only service data of the indoor units RoHS compliant products have lt G gt mark on the spec name plate indication Model name CONTENTS 1 REFERENCE MANUAL 2 2 SAFETY PRECAUTION 3 3 PART NAMES AND FUNCTIONS 5 SPECIFICATIONS enne 7 5 NOISE CRITERION CURVES 9 6 OUTLINES AND 5 5 10 7 WIRING 11 8 REFRIGERANT SYSTEM DIAGRAM 12 9 TROUBLESHOOTING eee 13 10 SPECIAL FUNCTION 23 11 DISASSEMBLY PROCEDURE 26 PARTS CATALOG 528 ifc 1 REFERENCE MANUAL 1 1 OUTDOOR UNIT S SERVICE MANUAL Service Ref Service Manual No PUHZ ZRP71VHA PUHZ ZRP100 125 140VKA PUHZ ZRP100 125 140YKA OCH527 OCB527 PUHZ P100 125 140VHA3 UK PUHZ P100 125 140VHA3R
24. Monitoring the request code of current setting hc 823 Cut in function OFF 1522 Cut in Function ON Set point Set temp 4 C 7 2 F E E Cut in Function ON Set point Set temp 6 C 10 8 F E 1228 Function ON Set point Set temp 8 C 14 4 F 528 24 2 Setting method of each function by wired remote controller Aa MITSUBISHI ELECTRIC B Refrigerant address mrninrEnnnce C Data display area D Request code display area nr 00 9 Lu EE e 5 PAR 21MAA GEN Ji TEMP ON OFF mm OMENU hal FILTER um CHECK TEST em eum Gp i Stop operation Q Press the TEST button for seconds so that Maintenance mode appears the screen After a while 00 appears in the refrigerant address number display area at amp Press the CHECK button for 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 when Maintenance monitor is activated The display now allows you to set a request code No Pressthe TEMP V7 and A buttons to select the desired refrigerant address
25. S on indoor power board and CN2D on indoor power board If no problem are found indoor controller board is defective When LED1 on indoor controller board is lit Mis setting of refrigerant address for outdoor unit There is no unit corresponding to refrigerant address 0 18 Reconfirm the setting of refrigerant address for outdoor unit Set the refrigerant address to For grouping control system under which 2 or more outdoor units are connected set one of the units to Set refrigerant address using SW1 3 6 on outdoor controller circuit board Note Refer to the manual of outdoor unit for the detail of remote controller Phenomena Cause Countermeasure 2 LED2 on indoor controller board When LED1 on indoor controller board is also blinking Check indoor outdoor unit connecting wire is blinking Connection failure of indoor outdoor unit connecting for connection failure wire When is lit D Check the connection of remote controller Mis wiring of remote controller wires wires in case of twin triple indoor unit Under twin triple indoor unit system 2 or more indoor system When 2 or more indoor units are units are wired together wired in one refrigerant system connect remote controller wires to one of those units Refrigerant address for outdoor unit is wrong or O Check the setting of refrigerant address set in case of grouping control
26. SUBISHI ELECTRIC Timer Menu button Monitor Set button Filter 41 button Mode button Return button lt Enter gt button ON OFF Test Run button Set Time buttons Check button Clear button oniorr Ts FILTER EE GE C D C BACK MONTORSE DAY CHECK TEST Cap Airflow Up Down button Timer On Off button PAR 21MAA CLOCK Set Day button V Operation button Louver button To preceding operation number Opening the A Operation button CA To next operation number Ventilation button OCH528 5 Display For purposes of this explanation all parts of the display are shown During actual operation only the relevant items will be lit Identifies the current operation Shows the operating mode etc Multilanguage display is sup ported Day of Week Shows the current day of the week Time Timer Display Shows the current time unless the simple or Auto Off timer is set If the simple or Auto Off timer is set shows the time remaining Sensor indication Displayed when the remote controller sensor is used Locked indicator Indicates that remote controller but tons have been locked
27. dle High dB 40 42 44 Unit drain pipe O D mm in 20 13 16 Dimensions mm in 600 23 5 8 mm in 360 14 11 64 mm in 1 900 74 13 16 Service Ref kg Ibs PSA RP100KA Mode Cooling Heating Power supply phase cycle voltage Single phase 50Hz 230V Input 0 11 0 10 Running current 0 71 0 66 External finish Munsell 0 70Y 8 59 0 97 Heat exchanger Plate fin coil Fan Fan drive x No Centrifugal direct x 1 Fan motor output kW 0 16 Airflow Low Middle High m min CFM 25 28 30 893 1 000 1 071 External static pressure Pa mmAq O direct blow Booster heater kW Operation control amp Thermostat Remote controller amp built in Noise level Low Middle High dB 45 49 50 Unit drain pipe O D mm in 20 13 16 Dimensions mm in 600 23 5 8 mm in 360 14 11 64 mm in 1 900 74 13 16 Weight Service Ref 5 46 102 PSA RP125KA Mode Cooling Heating Power supply phase cycle voltage Single phase 50Hz 230V Input 0 11 0 11 Running current 0 73 0 73 External finish Munsell 0 70Y 8 59 0 97 Heat exchanger Plate fin coil Fan Fan drive No Centrifugal direct 1 Fan motor output kW 0 16 Airflow Low Middle High
28. e is disconnected 4 Receiver for wireless remote Weak batteries of wireless remote controller Replace batteries of wireless remote controller controller Q Contact failure of connector CNB on wireless remote controller board Check contact failure of each connector Insert failure If no problems are found of connector G Contact failure of connector CN90 on indoor replace indoor controller board controller board Insert failure When the same trouble occurs even Contact failure of connector between wireless if indoor controller board is replaced controller board and indoor controller board replace wireless remote controller board 9 4 HOW TO CHECK THE PARTS PSA RP71KA PSA RP100KA PSA RP125KA PSA RP140KA Parts name Check points Room temperature Disconnect the connector then measure the resistance with a tester thermistor TH1 Surrounding temperature 10 C 30 C Pipe temperature thermistor 2 Normal Abnormal Condenser evaporator 4 3kQ 9 6kQ Open or short Refer to 9 4 1 Thermistor for a detail temperature thermistor TH5 Louver motor ML Measure the resistance between the terminals with a tester Surrounding temperature 25 C Normal Abnormal 11000 130000 Open or short OCH528 19 9 4 1 Thermistor lt Thermistor Characteristic graph gt lt Thermistor for lower temperature gt Thermistor for Room temperature thermisto
29. erant circuit clogs Heating mode Clogged filter reduced airflow Short cycle of air path Over load high temperature operation out of the tolerance range Defective indoor fan motor Fan motor is defective Indoor controller board is defective Defective outdoor fan control amp Overcharge of refrigerant Defective refrigerant circuit clogs Bypass circuit of outdoor unit is defective 14 Cooling or drying mode Check clogs of the filter Remove blockage Refer to 9 6 Check outdoor fan motor Check operating condition of refrigerant circuit Heating mode Check clogs of the filter Remove blockage Refer to 9 6 Check outdoor fan motor Check operating condition of refrigerant circuit Error Code Abnormal point and detection method Cause Countermeasure Pipe temperature lt Cooling mode gt Detected as abnormal when the pipe temperature is not in the cooling range 3 minutes after compressor start and 6 minutes after the liquid or condenser evaporator pipe is out of cooling range Note 1 It takes at least 9 minutes to detect Note 2 Abnormality P8 is not detected in drying mode Cooling range 3 C 2 TH TH1 TH Lower temperature between liquid pipe temperature TH2 and condenser evaporator temperature TH5 TH1 Intake temperature lt Heating mode gt When 10 seconds have passed after the compress
30. frigerant address of each unit Dip switch on the outdoor unit Refrigerant address 00 01 Operation pattern Fig 1 Refrigerant address Refrigerant address 00 01 Back up function only Request code number 312 Error occurs on main unit Start operation Sub Main unit IC 1 Sub unit Sub unit IC 2 Error occurs on main unit Start operation Main Sub Sub Main Main Sub i OC Outdoor unit Indoor unit Abnormal condition RC Wired remote controller Main unit IC 1 Sub unit IC 2 1 1 4 gt lt gt 1 28 days 1 28 days Ex When the request code number is 313 each unit operates alternately in daily cycle When the unit is restarted to operate after turning off the power or OFF operation the unit which was operating will start operation operate the main unit refer to the 10 1 2 and set the request code No which is not the same as the current one and set again the former request code No 2 2nd stage cut in function Outline of functions Number of operating units is determined according to the room temperature and set point When room temperature becomes higher than set point standby unit starts 2 units operation When room temperature falls below set point 4 standby unit stops 1 unit operation System constraint reu cM Dn DE E Mal M Me EI dard This functi
31. he power on Abnormal if indoor controller board can not receive any signal normally for 3 minutes Consider the unit abnormal under the following condition When 2 or more indoor units are connected to an outdoor unit indoor controller board cannot receive a signal for 3 minutes from outdoor controller circuit board a signal which allows outdoor controller circuit board to transmit signals Q 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 OCH528 Check LED display on the outdoor control circuit board Connect A control service tool PAC SK52ST Refer to outdoor unit service manual 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 9 4 Turn the power off and on again to check If abnormality generates again replace indoor controller board or outdoor controller circuit board Other indoor controller board may have defect in case of twin triple indoor unit system 16 Error Code Abnormal point and detection method Cause Countermeasure Indoor outdoor unit communication error Transmitting error
32. indoor outdoor connecting wires Check the room temperature display of remote controller Check the indoor liquid pipe temperature display of outdoor controller board Abnormal refrigerant circuit During Cooling Dry or Auto Cooling operation when the following are regarded as failures when detected for one second a The compressor continues to run for 30 or more seconds b The liquid pipe temperature or the condense evaporator temperature is 75 C or more These detected errors will not be cancelled until the power source is reset OCH528 Abnormal operation of 4 way valve Disconnection of or leakage in refrigerant pipes Air into refrigerant piping Abnormal operation no rotation of indoor fan Defective fan motor Defective indoor control board Defective refrigerant circuit clogging 17 When this error occurs be sure to replace the 4 way valve Check refrigerant pipes for disconnection or leakage After the recovery of refrigerant vacuum dry the whole refrigerant circuit Refer to section 10 6 2 Check refrigerant circuit for operation To avoid entry of moisture or air into refrigerant circuit which could cause abnormal high pressure purge air in refrigerant circuit or replace refrigerant 9 3 TROUBLESHOOTING BY INFERIOR PHENOMENA Note Refer to the manual of outdoor unit for the detail of remote Phenomena controller
33. ndoor outdoor unit connecting wire Pipe temperature thermistor Condenser Evaporator TH5 The unit is in 3 minute resume protection mode if short open of thermistor is detected Abnormal if the unit does not get back to normal within 3 minutes The unit returns to normal operation if it has been reset normally Constantly detected during cooling drying and heating operation except defrosting Short 90 C or more Open 40 C or less OCH528 Defective thermistor characteristics Contact failure of connector CN44 on the indoor controller board Insert failure Breaking of wire or contact failure of thermistor wiring Temperature of thermistor is 90 C or more or 40 C or less caused by defective refrigerant circuit Defective indoor controller board 15 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 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
34. of this unit refer to the caution label 123 4 5 located near this diagram PSA RP71KA B NOTES 1234 5 1 Symbols used in wiring diagram above are Connector Terminal block PSA RP100KA 1 n One 2 inher and outdoor Ni arte wires are made with polarities make wiring 12345 matching terminal numbers 51 52 53 PSA RP125KA i 3 Since the outdoor side electric wiring may change be sure to check the outdoor o unit electric wiring for servicing 5 12345 4 This diagram shows the wiring of indoor and outdoor connecting wires Su LEE m EE m OFF specification of 230V adopting superimposed system of power and signal OCH528 11 8 REFRIGERANT SYSTEM DIAGRAM PSA RP71KA PSA RP100KA PSA RP125KA PSA RP140KA Heat exchanger Room temperature thermistor TH1 OCH528 Strainer 50 Condenser evaporator temperature thermistor TH5 Pipe temperature thermistor liquid Distributor with strainer 50 TH2 Refrigerant GAS pipe connec
35. of wire or contact failure can be detected Check contact failure of connector CN20 on the indoor controller board Refer to 9 6 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 Pipe temperature thermistor Liquid TH2 The unit is in 3 minute resume prevention mode if short open of thermistor is detected Abnormal if the unit does not reset normally after 3 minutes The unit returns to normal operation if it has been reset normally Constantly detected during cooling drying and heating except defrosting operation Short 90 C or more Open 40 or less Defective thermistor characteristics Contact failure of connector CN44 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 C or more or 40 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 6 Turn the power on and check restart after inserting connector again Check pipe liquid temperature with remote con
36. on is available only in rota 2nd stage cut in function Request code number 322 324 tion operation and back up function in i Room temp 2 Set point Room temp lt Set point 4 C cooling mode Start operation Sub unit start operation Sub unit stop i Main unit IC 1 Sub unit IC 2 OCH528 23 10 1 2 How to set rotation function Back up function 2nd stage cut in function You can set these functions by wired remote controller Maintenance monitor NOTICE 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 Initial Request code Setting contents 310 Monitoring the request code of current setting Rotation and Back up OFF Normal group control operation Q 312 Back up function only 513 Rotation ON Alternating interval 1day and back up function 842 Rotation ON Alternating interval 3day and back up function d No 6 315 846 Rotation ON Alternating interval 7day and back up function Rotation ON Alternating interval 5day and back up function No 8 317 378 Rotation ON Alternating interval 28day and back up function Rotation ON Alternating interval 14day and back up function 2nd stage cut in setting Setting No Initial Request code Setting contents
37. or starts operation and the hot adjustment mode has finished the unit is detected as abnormal when condenser evaporator pipe temperature is not in heating range within 20 minutes Note 3 It takes at least 27 minutes to detect abnormality Note 4 It excludes the period of defrosting Detection restarts when defrosting mode is over Heating range 3 C TH5 TH1 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 G 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 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 SW2 of outdoor controller circuit board as follows controller circuit board after connecting Conduct temperature check with outdoor A Control Service Tool PAC SK52ST Check converse connection of extension pipe or converse wiring of i
38. or 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 during installation indoors and keep both ends of the piping sealed until just before brazing Leave elbow joints etc in their packaging Torque wrench Electronic refrigerant charging scale Keep the tools with care If dirt dust or moisture enter into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor If dirt dust or moisture enter 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 enter 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 liq
39. r TH1 lower temperature Pipe temperature thermistor TH2 Condenser evaporator temperature thermistor TH5 Thermistor Ro 15kQ 3 Fixed number of B 3480 2 Rt 15exp 3480 L 27341 273 x zm 9 c 5 S E c 15kQ 10 C 9 6kQ 20 C 6 3kQ 256 5 4kQ 30 C 4 3kQ 20 10 0 10 20 30 40 50 40C 3 0kQ Temperature 9 4 2 DC Fan motor FAN MOTOR INDOOR CONTROLLER BOARD Check method of DC fan motor fan motor indoor controller circuit board Notes High voltage is applied to the connector CNMF for the fan motor Pay attention to the service Do not pull out the connector for the motor with the power supply on It causes trouble to the indoor controller circuit board and fan motor Self check Symptom The indoor fan cannot rotate Indoor controller board fuse check Is the resistance No Yes Replace the fan motor Is the fuse normal gt between the ene of the indoor controller board yes drain pump normal Wiring contact check Jno Contact of fan motor connector CNMF Replace the drain pump Is there contact failure gt o 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 DC 280 V TEST POINT Vcc between 5 and 4 of the fan connector
40. remote controller Not logged OCH528 13 the abnormal symptom ldentify the cause of the trouble and take a corrective action according to TROUBLESHOOTING BY INFERIOR PHENOMENA 9 3 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 9 2 SELF DIAGNOSIS ACTION TABLE Error Code Abnormal point and detection method Note Refer to the manual of outdoor unit for the details of display such as F U and other E Cause Countermeasure Room temperature thermistor TH1 The unit is in 3 minute resume prevention mode if short open of thermistor is detected Abnormal if the unit does not reset normally after 3 minutes The unit returns to normal operation if it has been reset normally Constantly detected during cooling drying and heating operation Short 90 C or more Open 40 or less Defective thermistor characteristics Contact failure of connector CN20 on the indoor controller board Insert failure G Breaking of wire or contact failure of thermistor wiring Defective indoor controller board Check resistance value of thermistor OC 15 0kO 10 9 6kQ 20 C 6 3kQ 30 C 4 3kQ 40 C 3 0kQ If you put force on draw or bend the lead wire with measuring resistance value of thermistor breaking
41. settings of the wireless remote controller and indoor control PCB J41 J42 are given in the table on the left x in the table indicates the jumper line is disco nnected Unit type setting Model Without 5 With THS There is no jumper JP1 because these models have the cond eva temperature thermistor 5 Indoor controller board type setting OCH528 Indoor controller board type For product Service parts 22 10 SPECIAL FUNCTION 10 1 ROTATION FUNCTION AND BACK UP FUNCTION 2ND STAGE CUT IN FUNCTION For PSA RP71 100 125 140KA 10 1 1 Operation 1 Rotation function and Back up function Outline of functions Main and sub unit operate alternately according to the interval of rotation setting x Main and sub unit should be set by refrigerant address Outdoor Dip switch setting Refrigerant address 00 Main unit Refrigerant address 01 X Sub unit When error occurs to one unit another unit will start operation Back up function System constraint This function is available only by the grouping control system INDOOR UNIT OUTDOOR UNIT 1 1 of 2 refrigerant groups Refer to Fig 1 Main indoor unit should be connected for wired remote controller and the transmission line TB5 for main and sub unit should also be connected Refer to Fig 1 This function cannot be set by wireless remote controller Set re
42. system Under grouping control system there are some units If there are some units whose refrigerant whose refrigerant address is 0 addresses are 0 in one group set one of the units to 0 using SW1 3 6 on outdoor controller circuit board Short cut of remote controller wires Remove remote controller wires and Defective remote controller check LED2 on indoor controller board When LED2 is blinking check the short cut of remote controller wires When LED2 is lit connect remote controller wires again and if LED2 is blinking remote controller is defective if LED2 is lit connection failure of remote controller terminal block etc has returned to normal 3 Upward downward vane The vane is not downward during defrosting and D Normal operation The vane is set to performance failure preparation and when the thermostat is OFF in HEAT horizontal regardless of remote control mode Working of COOL protection function Vane motor does not rotate Check left Defective vane motor Check the vane motor Refer to How Breaking of wire or connection failure of connector to check the parts Up down vane setting is No vanes Check for breaking of wire or connection failure of connector Check Up down vane setting Unit function selection by remote controller Upward downward vane does not work Normal operation Each connector on The vane is set to fixed position vane motor sid
43. tion Flare Refrigerant flow in cooling Refrigerant flow in heating Refrigerant LIQUID pipe connection Flare Strainer 50 12 9 TROUBLESHOOTING 9 1 TROUBLESHOOTING 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 SELF DIAGNOSIS ACTION TABLE 9 2 Not displayed Conduct troubleshooting and ascertain the cause of the trouble according to TROUBLESHOOTING BY INFERIOR PHENOMENA 9 3 The trouble is not reoccurring 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 and wiring related Reset error code logs and restart the unit after finishing service There is no abnormality in electrical components controller boards and
44. troller in test run mode If pipe lt liquid gt temperature is extremely low in cooling mode or high in heating mode refrigerant circuit may have defective Check pipe liquid temperature with remote controller in test run mode If there is extremely difference with actual pipe liquid temperature replace indoor controller board Turn the power off and on again to operate after check Freezing overheating protection is operating Freezing protection Cooling mode The unit is in 6 minute resume prevention mode if pipe liquid or condenser evaporator gt temperature stays under 15 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 prevention mode Overheating protection Heating mode The units is in 6 minute resume prevention mode if pipe condenser evaporator temperature is detected as over 70 C after the compressor started Abnormal if the temperature of over 70 C is detected again within 30 minutes after 6 minute resume prevention mode OCH528 Cooling or drying mode Clogged filter reduced airflow Short cycle of air path 9 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 amp Overcharge of refrigerant Defective refrig
45. uid 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 Use the specified refrigerant only OCH528 3 Never use any refrigerant other than that specified Doing so may cause a burst an explosion or fire when the unit is being used serviced or disposed of Correct refrigerant is specified in the manuals and on the spec labels provided with our products We will not be held responsible for mechanical failure system malfunction unit breakdown or accidents caused by failure to follow the instructions 1 Cautions for service 1 Perform service after collecting the refrigerant left in unit completely 2 Do not release refrigerant in the air 3 After completing service charge the cycle with specified amount of refrigerant 4 When performing service install a filter drier simultaneously Be sure to use a filter drier for new refrigerant 2 Additional refrigerant charge When charging directly from cylinder Check that cylinder R410A on the market is syphon type Charging should be performed with the cylinder of syphon stood vertically Refrigerant is charged from liquid phase Gravimeter 3 Service tools Use the below service tools as
46. utput Check the wiring connection When output voltage is between DC12 5V and DC13 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 N When AC220 240V is not detected Check the power supply wiring When AC220 240V is detected Check below Check that there is no problem in the meth od 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 AC220 240V 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 AC220 240V is detected Check below Check voltage output from CN2S 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 DC12 5 13 7V is detected Check the wiring connection between CN2
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