Mitsubishi Electric SEZ-KD71VA Manual de servicio

TECHNICAL & SERVICE MANUALNo.OCH530REVISED EDITION-ASPLIT-TYPE, HEAT PUMP AIR CONDITIONERSR410AOutdoor unit[Model Name] [Service Ref.]SUZ-KA25VA3

10 11NOISE CRITERIA CURVES5OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BARCOOLINGFUNCTIONSPL(dB(A))LINEHighMed.FAN SPEEDHEATING4748OUTDOORUNI

10 116OUTLINES AND DIMENSIONS1069800302.5500 Bolt pitch for installation15022.3Handle550280164.599.5170.523Service panelService port285344.544400Air i

1312 13417.54042Drain hole17550033050Air inAir out2-Oval holes 10 2184010981880452Service panel99.5164.51953544Liquid refrigerantpipe jointRefrigera

1312 137WIRING DIAGRAMSUZ-KA25VA3.THSUZ-KA35VA3.THOCH530A

14 15SUZ-KA50VA3.THOCH530A

14 15SUZ-KA60VA3.THSUZ-KA71VA3.THOCH530A

1716 17REFRIGERANT SYSTEM DIAGRAM8Unit: mmSUZ-KA25VA3.THUnit: mmSUZ-KA35VA3.THFlared connectionDefrostthermistorRT61DischargetemperaturethermistorRT62

1716 17Unit: mmSUZ-KA50VA3.THOutdoorheatexchangerFlared connectionDefrostthermistorRT61DischargetemperaturethermistorRT62Flared connectionStop valveSt

1918 19ADDITIONAL REFRIGERANT CHARGE (R410A: g)SUZ-KA25VA3.TH SUZ-KA35VA3.TH SUZ-KA50VA3.THSUZ-KA60VA3.TH SUZ-KA71VA3.THMAX. REFRIGERAN

1918 19ACTUATOR CONTROL9SUZ-KA25VA3.TH SUZ-KA35VA3.TH SUZ-KA50VA3.TH SUZ-KA60VA3.TH SUZ-KA71VA3.TH9-3. RELATION BETWEEN MAIN SENSOR AND ACTUATOR9-2

2 31COMBINATION OF INDOOR AND OUTDOOR UNITSHeat pump typeOutdoor unitSUZ- SLZ-KA25VA(L).THSLZ-KA35VA(L).THSLZ-KA50VA(L).THSLZ-KA25VAL2.THSLZ-KA35VALR3

2120 21SUZ-KA25VA3.TH SUZ-KA35VA3.TH SUZ-KA50VA3.TH SUZ-KA60VA3.TH SUZ-KA71VA3.THCHANGE IN DEFROST SETTINGChanging defrost finish temperature<JS&g

2120 21SUZ-KA25VA3.TH SUZ-KA35VA3.TH SUZ-KA50VA3.TH SUZ-KA60VA3.TH SUZ-KA71VA3.TH temperature thermistor, outdoor heat exchanger temperature

22 23F1 F2 F3 F4unem ecivreSrosruC:unem niaMTest runInput maintenance info.Function settingCheckSelf checkF1 F2 F3 F4kcehc fleS:tceleSRef. addresssser

22 23If operations cannot be completed with the remote controller, diagnose the remote controller with this function.F1 F2 F3 F4unem ecivreSrosruC:une

24 25When a problem occurs to the air conditioner, the indoor and outdoor units will stop,and the problem is shown in the remote controller display.[

24 25Transmission data from remote controllerTransmission data on transmission pathWhen the number of data errors is "02":Press the ON/OFF b

26 27• "CHECK" lights, and refrigerant address "00" flashes.• Check that the remote controller's display has stopped before c

26 27[Output pattern A] Errors detected by indoor unit[Output pattern B]E91. If the beeper does not sound again after the initial 2 beeps to confirm t

28 2911-4. TROUBLE CRITERION OF MAIN PARTS Parts nameFigureCheck method and criterionOutdoor fan motor R.V. coil (21S4) Expansion valve coil(LEV)Measu

28 29 A How to check inverter/compressorAre the voltages balanced?Disconnect the connector between the compressor and the intelligent power module (K

2 32TECHNICAL CHANGESRefrigerantoilRefrigerantNew refrigerantR410AHFC-32: HFC-125 (50%:50%)Pseudo-azeotropic refrigerantNot includedA1/A172.6-51.41.55

30 31 D Check of compressor winding Disconnect the connector between the compressor and intelligent power module, and measure the resistance betw

30 31 G Check of R.V. coilFirst of all, measure the resistance of R.V. coil to check if the coil is defective. Refer to 11-4.In case CN721(KA25/35/50

32 33 I Check of LEV Turn on power supply to the outdoor unit after checking LEV coil is xed to the LEV body securely.YesDisconnect the connector C

32 33 Electromagnetic noise enters into TV sets or radiosYesIs the unit earthed?NoEarth the unit.YesIs the distance between the antennas and the i

34 3511-6. TEST POINT DIAGRAM AND VOLTAGE11-6-1. Inverter P.C. boardSUZ-KA25VA3.TH SUZ-KA35VA3.TH SUZ-KA50VA3.TH-20 -10 0 10 20 30 400102030405060708

34 3511-6-2. Inverter P.C. boardSUZ-KA60VA3.TH SUZ-KA71VA3.TH-20 -10 0 10 20 30 400102030405060708090100Temperature( )Defrost thermistor(RT61)Ambien

3736 3712DISASSEMBLY INSTRUCTIONS(1) Slide the sleeve and check if there is a locking lever or not. (2) The terminal with this connector has the

3736 37OPERATING PROCEDUREPHOTOS2. Removing the inverter assembly, inverter P.C. board(1) Remove the cabinet and panels. (Refer to procedure 1.)(2) Di

38 39OPERATING PROCEDUREPHOTOS5. Removing outdoor fan motor(1) Remove the cabinet and panels. (Refer to procedure 1.)(2) Disconnect the following conn

NOTE: Turn OFF power supply before disassembly.OPERATING PROCEDUREPHOTOS1. Removing the cabinet(1) Remove the screws of the service panel.(2) Remove t

4 5R410A tools Can R22 tools be used?Gas leak detectorR410A has high pressures beyond the measurement range of existing gauges. Port diameters have be

40 41OPERATING PROCEDUREPHOTOS2. Removing the inverter assembly, inverter P.C. board(1) Remove the cabinet and panels. (Refer to procedure 1.)(2) Disc

40 41OPERATING PROCEDURE PHOTOS4. Removing the discharge temperature thermistor, defrost thermistor, outdoor heat exchanger tempera-ture thermistor an

NOTE: Turn OFF power supply before disassembling.OPERATING PROCEDUREPHOTOS1. Removing the cabinet(1) Remove the screws of the service panel.(2) Remove

42 43OPERATING PROCEDUREPHOTOS2. Removing the inverter assembly, inverter P.C. board(1) Remove the cabinet and panels. (Refer to procedure 1.)(2) Disc

44 45OPERATING PROCEDURE PHOTOS4. Removing the discharge temperature thermistor, defrost thermistor, outdoor heat exchanger tempera-ture thermistor an

44 45OCH530A

HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPANTMcCopyright 2012 MITSUBISHI ELECTRIC CORPORATIONDistributed in Sep. 2013

4 5Electronic scale for refrigerant chargingOutdoor unitRefrigerant gas cylinderoperating valveRefrigerant gas cylinderfor R410A with siphonRefrigeran

76 76. Pumping DownWhen relocating or disposing of the air conditioner, pump down the system by following the procedure below so that no refrigerant i

76 73PARTS NAMES AND FUNCTIONSSUZ-KA25VA3.TH SUZ-KA35VA3.THSUZ-KA50VA3.THSUZ-KA60VA3.THSUZ-KA71VA3.THAir outletDrain outletPipingDrain hoseAir inlet

98 9SPECIFICATION4NOTE : Test conditions are based on ISO 5151 Cooling : Indoor D.B. 27°C W.B. 19°C Outdoor D.B. 35°C Heating : Indoor D.B. 2

98 9SUZ-KA25VA3.TH SUZ-KA35VA3.THSUZ-KA50VA3.TH SUZ-KA60VA3.THSUZ-KA71VA3.THSpecifications and rating conditions of main electric partsModelItemSUZ-KA