Mitsubishi SRK35ZD-S Specifications

11.1 SRK20ZD-S SRK25ZC-SSRK25ZD-S SRK35ZC-SSRK35ZD-S SRK50ZC-SSRK50ZD-S ... 21.2 SRK63ZE-

10Model SRK50ZC-S (Indoor unit)SRC50ZC-S (Outdoor unit)ItemModelSRK50ZC-S SRC50ZC-SCooling capacity(1)W 5000 (600~5300)Heating capacity(1)W 6300 (600~

100(h) Heating low outdoor temperature protective control◆ < I >(i) Operating conditions: When the outdoor air temperature sensor (Th5) is 4°C o

101(l) Freezing cycle system protective control(i) Operating conditions: When both of following conditions have continued for more than 5 minutes late

102(q) Power transistor overheat protection(i) Purpose: In order to prevent the power transistor overheating during operation, faulty controller opera

103(t) Compressor lockIf the motor for the compressor does not turn 1/12 revolution 0.044 seconds after it has been started, it is determined that aco

1041.2.5 APPLICATION DATASAFETY PRECAUTIONS¡ Please read these “Safety Precautions” first then accurately execute the installation work.¡ Though the p

105(1) Selection of location for installation(a) Indoor unit(i) Where there is no obstructions to the air flow and where the cooledair can be evenly d

106Fixing on concrete wallUse of nut anchor Use of bolt anchorBolt(M6 × 12)MountingboardNut(M6)MountingboardMax. 10Adjustment of the installation boar

107(c) Preparation of indoor unit(i) Mounting of connecting wires1) Open the air inlet panel.2) Remove the lid.3) Remove the wiring clamp.4) Connect t

108[Drain hose changing procedures]1. Remove the drain hose.¡Remove the drain hose,making it rotate.Since this air conditioner has been designed to co

109(3) Installation of outdoor unit(a) Installation of outdoor unit(i) Make sure that the unit is stable in installation. Fix the unit to stable base.

11(2) Range of usage & limitations(3) Exterior dimensions(a) Indoor unit Models SRK20ZD-S, 25ZD-S, 35ZD-S, 50ZD-SIndoor return air tempera

110Service Valve(three-way valve) Charge hose(Designed specifically for R410A)CompoundpressuregaugePressuregaugeGauge Manifold(Designed specifically f

111(d) Explain to the customer on the correct usage of the air conditioner in simple layman’s terms.(e) Make sure that drain flows properly.(f) Standa

112(ii) When manipulating the remote control mounted on awall:Make sure that it works normally (i.e., transmission/receptionsignal is audible) before

113(7) Installation of wired remote controland super link adapter (SC-AD-E)(Optional parts)(a) Modifying the indoor unit’s printed circuitboard(i) Rem

1142) Recessed fittinga) The Electrical box and remote control (shieldwire must be use in case of extension) arefirst embedded.(b) Installation of wir

115(c) Setting functions using the wired remote control(i) The default settings of this unit's functions are as follows: If you want to charge a

116(ii) Function setting method1) Stop the air conditioner2) Press the SET and MODE buttons simultaneouslyfor 3 seconds or longer.The screen display w

117 When “I/U FUNCTION ” is selected.1 The screen display will be switched as follows:“ I/U SELECT” “ SET” “I/U No.00” (blinking)2 Press either

11812Function No. A (Example) If the upper limit is set at 28˚CFunction Contents B Setting Contents CTEMP RANGE SETDISP CHANGENO DISP CHANGEControl Co

119(d) SUPER LINK ADAPTER (SC-AD-E)(i) Functions1) Transmits the settings from the Super link option to the indoor units.2) Returns the priority indoo

12Models SRK25ZC-S, 35ZC-S, 50ZC-SUnit: mmAVIEW A815117.5580 117.52474.54.54.5356078860 14.5609148.5216.5216.5216.58.244.5236.15.745045067.542.747.21

1201.2.6 MAINTENANCE DATA(1) Troubleshooting procedures for electrical equipment(a) Cautions1 If you are disassembling and checking an air conditioner

121(d) Troubleshooting procedure (If the air conditioner runs)NONONONOYESYESYESYESNote (1) Even in cases where only intermittent stop data are generat

122(e) Self-diagnosis tableWhen this air conditioner performs an emergency stop, the reason why the emergency stop occurred is displayed by the flashi

123(f) Service mode (Trouble mode access function)This air conditioner is capable of recording error displays and protective stops (service data) whic

124*3: To count the number of flashes in the service mode, count the number of flashes after the light lights up for 1.5 secondinitially (start signal

1252 Stop dataRemote control settingFan speedswitchingOperation switchingDisplayed dataTemperaturesetting21°C22°C23°C24°C25°C26°C27°C28°C29°C30°CDispl

126Current safe4 timeflash1 timeflash2 timeflash3 timeflash4 timeflash5 timeflash6 timeflash411 timeflash612 timeflash62OFF 506 timeflashOFF 607 timef

127Notes (1) The number of flashes when in the Service Mode do not include the 1.5 second period when the lights light up at first (starting signal).

128(v) Room temperature sensor temperature, indoor heat exchanger sensor temperature, outdoor air temperaturesensor temperature, outdoor heat exchange

129(vi) Discharge pipe temperature tableUnits: °CBuzzer sound (minus)TIMER light(1’s digit)RUN light(10’s digit)Yes(sounds for 0.1 second)321001234567

13(b) Outdoor unit Models SRC20ZD-S, 25ZD-S, 35ZD-S SRC25ZC-S, 35ZC-SDrain holes286.4125029049.643.5850203.1510 136.9476E

130Service data record formCustomerDate of investigationMachine nameError code on previous occasion.Room temperature sensor temperature on previous oc

131(g) Inspection procedures corresponding to detail of troubleSensor error[Broken sensor wire,connector poor connection](Shortcircuit)(Broken wire)Is

132Current cut[Open phase on compressor outputterminal, compressor lock]YESYESNONOYESNO¡ Check compressor wiring visually.¡ Check insulation resistanc

133Over heat of compressor[Gas shortage, defective dischargepipe sensor]Is discharge pipe sensorresistance value good?(page 131)Is sufficient quantity

134Outdoor fan motor error[Defective fan motor, connectorpoor connection, defective PCB]Is connector connection good?YESNONOIs the output of the outdo

135OperationmodeHeat exchangersensorOutdoor airtemperature sensorDischarge pipesensorCompressor overload protection is disabled.(Can be operated.)(i)

136(j) Inverter failure diagnosisIf the results of the diagnosis in Item (h) indicate that the inverter is defective, perform the following inspection

137 Inspection of resistance value of dischargepipe sensor.Remove the connector and check the resis-tance value. See the section of sensor char-acter

138Output voltage(ACV)(Example)Self-diagnosis display : Flashes 2 timesMeasure in this sectionOperation SW ON8 ~ 10 sec.01◆ Power transistor inspectio

139(2) Servicing(a) EvacuationThe evacuation is an procedure to purge impurities...noncondensable gas, air, moisture from the refrigerant equipment

14(4) Piping system Models SRK20ZD-S, 25ZD-S, 35ZD-SSRK25ZC-S, 35ZC-SOutdoor unitIndoor unitRoom temp.sensorHeatexchangerFlare connectionHeate

140MEMO

15(5) Selection chartCorrect the cooling and heating capacity in accordance with the conditions as follows. The net cooling and heating capacity can b

161.1.3 ELECTRICAL DATA(1) Electrical wiringModels SRK20ZD-S, 25ZD-S, 35ZD-SSRK25ZC-S, 35ZC-SPower source1 Phase220/230/240V 50HzOutdoor unitIndoor u

17Power source1 Phase220/230/240V 50HzOutdoor unitIndoor unitHEATEXCHANGERPrinted circuit boardBRBLY/GNBKWHYORRDRDBKWHYBLTB TBF2 (250V 15A)F1250V3.15A

18LOMEDHIAUTOHI POWERECONOON OFFAM PMHI POWERTEMPECONOAIR FLOWCANCELON OFFRESERVETIMERTIMEACLFAN SPEEDONMODELOMEDHIAUTOTIMEOFFHI POWERECONOON OFFAM PM

19 Unit indication sectionModels SRK20ZD-S, 25ZD-S, 35ZD-S, 50ZD-S(2) Unit ON/OFF buttonWhen the remote controller batteries become weak, or if the

2CONTENTS1.1.1 GENERAL INFORMATION ... 3(1) Specific features ...

20(4) Flap controlControl the flap by AIRFLOW button on the wireless remote control.(a) Air scroll (AUTO)The flap will be automatically set to the ang

21(c) Hot keep operationIf the hot keep operation is selected during the heating operation, the indoor blower is controlled based on the temperature o

22Notes (1) Refer to the table shown above right for the values A and B.Note (2) Values in ( ) are for type 20, 25, 35.¡ Hot keep M mode [Duri

23(v) Heating “HI POWER” operation (HI POWER button on remote controller: ON)Operation is maintained for 15 minutes with a higher blow out air tempera

24(c) Detail of control in each mode (Pattern)(i) Fuzzy operationDuring the fuzzy operation, the air flow and the inverter speed are controlled by cal

25D range C range B range A range(ii) Heating oriented dehumidifyingAfter interrupting the compressor operation for 3 minutes (by the 3-minute ti

26(9) Outline of automatic operation(a) Determination of operation modeThe unit checks the room temperature and the outdoor air temperature after oper

27(b) Indoor fan motor protectionWhen the air conditioner is operating and the indoor fan motor is turned ON, if the indoor fan motor has operated at

28(g) Inching preventionWhen the compressor goes into the thermo operation within 10(5) minutes since operation start or becomes various dehumidifying

29Notes (1) When the discharge pipe temperature is in the range of 100(90) to 125(110)ºC, the speed is reduced by 4 rps.(2) When the discharge pipe te

3Over heat of compressorError of signal transmissionOutdoor fan motor error1.1.1 GENERAL INFORMATION(1) Specific featuresThe “Mitsubishi Daiya” room a

30(p) Heating low outdoor temperature protective control (50 type only)◆ <I>(a) Operating conditions: When the outdoor air temperature sensor (T

31◆ 50 typeNote (1) When the start delay of compressor of indoor unit controller is actuated and the operation is reset, it takes 2 minutes and 55 sec

321.1.5 APPLICATION DATASAFETY PRECAUTIONS¡ Please read these “Safety Precautions” first then accurately execute the installation work.¡Though the pre

33(1) Selection of location for installation(a) Indoor unit(i) Where there is no obstructions to the air flow and where the cooledair can be evenly di

34(2) Installation of indoor unit(a) Installation of installation board(i) Fixing of installation board(b) Drilling of holes and fixture sleeve (Optio

35(c) Preparation of indoor unit(i) Mounting of connecting wires1) Remove the lid (R).2) Remove the terminal cover.3) Remove the wiring clamp.4) Conne

36(d) Installation on indoor unit(i) Install the indoor unit on the mounting plate.Hook the upper part of the indoor unit on the stoppers disposed at

37 Service Valve(three-way valve) Charge hose(Designed specifically for R410A)CompoundpressuregaugePressuregaugeGauge Manifold(Designed specifically f

38(d) Insulation of connecting portion(i) Cover the connecting portion of the refrigerant piping with the pipe cover and seal them.If neglecting to do

39(ii) When manipulating the remote controller mounted ona wall:Make sure that it works normally (i.e., transmission/receptionsignal is audible) befor

4ItemModelSRK20ZD-S SRC20ZD-SCooling capacity(1)W 2000 (500~2800)Heating capacity(1)W 2700 (500~4600)Power source 1 Phase, 220-240V, 50HzCooling input

401.1.6 MAINTENANCE DATA(1) Troubleshooting procedures for electrical equipment(a) Cautions1 If you are disassembling and checking an air conditioner,

41(d) Troubleshooting procedure (If the air conditioner runs)NONONONOYESYESYESYESNote (1) Even in cases where only intermittent stop data are generate

42(e) Self-diagnosis tableWhen this air conditioner performs an emergency stop, the reason why the emergency stop occurred is displayed by the flashin

43(f) Service mode (Trouble mode access function)This air conditioner is capable of recording error displays and protective stops (service data) which

44*3: To count the number of flashes in the service mode, count the number of flashes after the light lights up for 1.5 secondinitially (start signal)

452 Stop dataRemote controller settingFan speedswitchingOperation switchingDisplayed dataTemperaturesetting21°C22°C23°C24°C25°C26°C27°C28°C29°C30°CDis

46Current safe4 timeflash1 timeflash2 timeflash3 timeflash4 timeflash5 timeflash6 timeflash411 timeflash612 timeflash625 timeflashOFF 506 timeflashOFF

47Notes (1) The number of flashes when in the Service Mode do not include the 1.5 second period when the light light up at first (starting signal). (S

48(v) Room temperature sensor temperature, indoor heat exchanger sensor temperature, outdoor air temperaturesensor temperature, outdoor heat exchanger

49(vi) Discharge pipe temperature tableUnits: °CBuzzer sound (minus)TIMER light(1’s digit)RUN light(10’s digit)Yes(sounds for 0.1 second)321001234567-

5ItemModelSRK25ZD-S SRC25ZD-SCooling capacity(1)W 2500 (500~3000)Heating capacity(1)W 3400 (500~4800)Power source 1 Phase, 220-240V, 50HzCooling input

50Service data record formCustomerDate of investigationMachine nameError code on previous occasion.Room temperature sensor temperature on previous occ

51(g) Inspection procedures corresponding to detail of troubleSensor error[Broken sensor wire,connector poor connection](Shortcircuit)(Broken wire)Cur

52Outdoor unit error[Broken power transistorbroken compressor wire]Compressor overheat[Gas shortage, defective dischargepipe sensor]Is output voltage

53Serial signal transmission error[Wiring error including power cable, defective indoor/outdoor unit PCB, error on power supply system]Does error pers

54Outdoor fan motor error[Defective fan motor,defective PCB]YESYESNONOIs connector connection good?Is voltage applied to fan motor?Defective fan motor

55(j) Inspection procedures of indoor electrical equipmentNotes (1) Since the communication timing signal is transmitted only when the52C is turned ON

56Printed circuit boardF2 (250V 20A)WHRDUVWBKC2S.INR.INReGTh4Th5Th6CNB CNE CNACNDNPPowertransistor20SEEVFMoDSCMBKWHRDY/GN123◆ Inspection of resista

57F2 (250V 15A)G3N-1L-1CNO.1 FMoEEVCMCFoSWITCHINGPOWERCIRCUITCNSPWB1PWB3PWB21CNG2N_1N_3P_1P_1RDRDRDORORBKBKGRORYN-OUT2GRAC.NAC.LAF_L1AF_L2BLBLL-OUT2UV

58(2) Servicing(a) EvacuationThe evacuation is an procedure to purge impurities...noncondensable gas, air, moisture from the refrigerant equipment

591.1.7 REFRIGERANT PIPING INSTALLATION/SERVICINGMANUAL FOR AIR CONDITIONERS USING R410A(These materials are extracted from document issued by The Jap

6ItemModelSRK35ZD-S SRC35ZD-SCooling capacity(1)W 3500 (500~3900)Heating capacity(1)W 4500 (500~5100)Power source 1 Phase, 220-240V, 50HzCooling input

60(iii) Lubricating oils for R410AAs the lubricating oils for R22, mineral oils, alkylbenze synthetic oils, etc. have so far been used. As R410A featu

61(ii) JointsFor copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants.1) Flare jointsFlare joints us

624) Flare processingMake certain that a clamp bar and copper pipe have been cleaned.By means of the clamp bar, perform the flare processing correctly

63(ii) Flare connecting procedures and precautions1) Make sure that the flare and union portions do not have any scar or dust, etc.2) Correctly align

64(ii) Identification1) Piping setA copper pipe as piping set for R410A must have a thickness as stated in Table 3 (see on page 60), and, as shown in

65(iii) Flux1) Reasons for the use of flux• By removing the oxide film and any foreign matter on the metal surface, it assists the flow of brazing fil

66* Cautions during brazing1 General cautions1) The brazing strength should be high as required.2) After operation, airtightness should be kept under

67(i) Tools exclusive for R410A1) Gauge manifold• As R410A is characterized by high pressure, conventional tools cannot be used.• In order to prevent

685) Flare tool (clutch type)• A flare tool for R410A is provided with a large clamp bar receiving hole so that the projection of the copper pipe from

69(b) New installation work (when using new refrigerant piping)(i) Air purge by vacuum pump and gas leakage inspection (see Fig. 6)1) Connect the char

7Model SRK50ZD-S (Indoor unit)SRC50ZD-S (Outdoor unit)ItemModelSRK50ZD-S SRC50ZD-SCooling capacity(1)W 5000 (600~5300)Heating capacity(1)W 6300 (600~7

706) After charging liquid refrigerant into the air conditioner by closing the charging valve, stop operation by fully closing thegauge manifold’s val

71(f) Refrigerant recharging at servicingWhen it becomes necessary to recharge refrigerant, charge the specified amount of new refrigerant according t

72(iv) Recovering procedures1) According to the instructions for handling the refrigerant recovering equipment (described in the attached instruction

732) Charge hose (pressure resistant hose for fluorocarbon) and packing• It is 1/4B in thickness and available in various lengths, etc.• Use a hose wh

74CONTENTS1.2.1 GENERAL INFORMATION ... 75(1) Specific features ...

75Over heat of compressorError of signal transmissionOutdoor fan motor error1.2.1 GENERAL INFORMATION(1) Specific featuresThe “Mitsubishi Daiya” room

76ItemModelSRK63ZE-S SRC63ZE-SCooling capacity(1)W 6300 (900~7100)Heating capacity(1)W 7100 (900~9000)Power source 1 Phase, 220-240V, 50HzCooling inpu

77ItemModelSRK71ZE-S SRC71ZE-SCooling capacity(1)W 7100 (900~8000)Heating capacity(1)W 8000 (900~10500)Power source 1 Phase, 220-240V, 50HzCooling inp

78(2) Range of usage & limitations(3) Exterior dimensions(a) Indoor unit Models SRK63ZE-S, 71ZE-SIndoor return air temperature(Upper, lower

79(b) Outdoor unit Models SRC63ZE-S, 71ZE-S(4) Piping system Models SRK63ZE-S, 71ZE-SUnit: mmTerminal blockService valve (Gas)Flare fi

8ItemModelSRK25ZC-S SRC25ZC-SCooling capacity(1)W 2500 (500~3000)Heating capacity(1)W 3400 (500~4800)Power source 1 Phase, 220-240V, 50HzCooling input

80(5) Selection chartCorrect the cooling and heating capacity in accordance with the conditions as follows. The net cooling and heating capacity can b

811.2.3 ELECTRICAL DATA(1) Electrical wiring Models SRK63ZE-S, 71ZE-SHeatHAJRDY/GNR-AMPWirelessDisplayGY/GNIndoor unit Outdoor unitBK2/N1WH32/N

82S Indication section(a) Wireless remote control1.2.4OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER(1) Operation control function by remote control sw

83(b) Wired remote control (Optional parts)The figure below shows the remote control with the cover opened. Note that all the items that may be displa

84(2) Unit ON/OFF buttonWhen the remote control batteries become weak, or if the remote control is lost or malfunctioning, this button may be used to

85EXTERNAL INPUTWIRED REMOCONOPE PERMISSIONCUSTOMAUTO RESTARTLO TEMPDIRT PREVENTCOOL ONLYHI CEILPANEL50/60(4) Custom cord switching procedureIf two wi

86Corrects the starting time of next operation bycalculating the temperature difference.(Example) HeatingSetting temperatureRoom temperatureOperation

87(c) Details of control at each operation mode (pattern)(i) Fuzzy operationDeviation between the room temperature setting correction temperature and

88(d) Defrosting operation(i) Starting conditions (Defrosting operation can be started only when all of the following conditions are met.)1) 1 After s

89Note (1) When outdoor unit heat exchanger sensor (Th4) temperature becomes 2°C or higher, inverter command changes 70 rps to 40rps.(iii) Ending cond

9ItemModelSRK35ZC-S SRC35ZC-SCooling capacity(1)W 3500 (500~3900)Heating capacity(1)W 4500 (500~5100)Power source 1 Phase, 220-240V, 50HzCooling input

90ModelSRK63ZE-S SRK71ZE-SItemInverter command speed 64 rps 74 rpsIndoor fan motor 8th speedOutdoor fan motor 6th speed(9) Outline of cooling operatio

91(10) Outline of dehumidifying operation(a) After operating the indoor blower for 20 seconds from immediately after the start of operation, the indoo

92(ii) Heating oriented dehumidifyingAfter interrupting the compressor operation for 3 minutes (by the 3-minute timer) following the determination of

93(12) Outline of fan operation(a) Operation of major functional components(13) Outline of clean operationCOOL,DRY,AUTO (COOL,DRY); after operation ha

94When the compressor is operatingWhen the compressor is stopped(Including protection stoppage)Inverter command speed (rps) 20 0Indoor fan motor OFFOu

95(iv) Fan operation2 (v) Standby operation1) Operation content 1) Operation contentInverter command speed (rps) 0Indoor fan motor OFFOutdoor f

96(17) Operation permission/prohibition controlThe air conditioner operation is controlled by releasing the jumper wire (J3) on the indoor control boa

97(18) Protective control function(a) Indoor fan motor protectionWhen the air conditioner is operating and the indoor fan motor is turned ON, if the i

98◆ < II >(i) Operating conditions: When all of the following conditions are met.1 After the inverter command speed is at a value other than 0 r

99◆ < II >(i) Operating conditions: When the outdoor air temperature sensor (Th5) is 22ºC or lower continues for 30 seconds whileoutdoor speed