Mitsubishi Electric MSZ-A.NA Series Manual de servicio

Inverter-controlled multi system typeModelsSERVICE MANUALCONTENTS1. TECHNICAL CHANGES ····································22. PART NAMES AND FUNCTIONS

10091215172409+0909+1209+1509+1709+2412+1212+1512+1715+1515+1717+1709+09+0909+09+1209+09+1509+09+1709+09+2409+12+1295959595959797979797979797979797979

100OPTIONAL PARTS1515-1. Different-diameter pipeUnit : inchBAC15-2. Outlet guideChanges air discharge direction.MAC-889SGZZ21-3/16"20-5/8"9/

101OB444C--4.qxp 07.10.18 2:21 PM Page 101

TMHEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPANCCCopyright 2006 MITSUBISHI ELECTRIC ENGINEERING CO.,LTDDistributed in

1109+12+1509+12+1709+15+1509+15+1709+17+1712+12+1212+12+1512+12+1712+15+1509+09+09+0909+09+09+1209+09+09+1509+09+12+129797979797979797979999999917.351

12091215172409+0909+1209+1509+1709+2412+1212+1512+1715+1515+1717+1709+09+0909+09+1209+09+1509+09+1709+09+2409+12+1209+12+15959595959597979797979797979

1309+12+1709+15+1509+15+1709+17+1712+12+1212+12+1512+12+1712+15+1509+09+09+0909+09+09+1209+09+09+1509+09+12+1297979797979797979999999913.3813.3813.381

14091215172409+0909+1209+1509+1709+2412+1212+1512+1715+1515+1717+1709+09+0909+09+1209+09+1509+09+1709+09+2409+12+1295959595959797979797979797979797979

1509+12+1509+12+1709+15+1509+15+1709+17+1712+12+1212+12+1512+12+1712+15+1509+09+09+0909+09+09+1209+09+09+1509+09+12+129797979797979797979999999915.691

16091215172409+0909+1209+1509+1709+2412+1212+1512+1715+1515+1717+1709+09+0909+09+1209+09+1509+09+1709+09+2409+12+1209+12+15959595959597979797979797979

1709+12+1709+15+1509+15+1709+17+1712+12+1212+12+1512+12+1712+15+1509+09+09+0909+09+09+1209+09+09+1509+09+12+1297979797979797979999999912.1012.1012.101

18SPECIFICATION4111Item ModelCapacityPowerconsumptionEER [SEER]HSPF IV (V)COPExternal finishPower supplyMax. fuse size (time delay)Min. circuit a

1911Item ModelCapacityPowerconsumptionEER [SEER]HSPF IV (V)COPExternal finishPower supplyMax. fuse size (time delay)Min. circuit ampacityFan moto

TECHNICAL CHANGES21MXZ-2A20NANew modelMXZ-30TN2 ➔ MXZ-3A30NA1. Combinations of connectable indoor units have been increased.2. Capacity class of conne

20Item208V208V36,000/ (11,400 ~ 41,200)3,100/ (740 ~ 4,000)230V230V36,000/ (11,400 ~ 43,000)3,100/ (740 ~ 4,350)ModelCapacityPowerconsumptionEER

21OUTLINES AND DIMENSIONS5MXZ-2A20NA MXZ-2A20NA - 1More than 3.94 in. Open as a ruleMore than 19.69 in.if the front and both sides areopenMore than 3.

22MXZ-3A30NA3-15/32"29/32"1-1/4"3-25/32"29-9/16"2-11/16"15"9-27/32"1-3/16"35-7/16"1-5/16"(7-7/8

23MXZ-3A30NA - 1 Unit: inchABC15/16"7/16"5/8"5/8"1-1/16"1-9/16"14"15-1/4"10-5/8"9-27/32"1-3/8"1

24MXZ-4A36NAUnit: inchABCD15/16"7/16"5/8"5/8"1-1/16"1-9/16"14"15-1/4"10-5/8"9-27/32"1-3/8"19-11

25WIRING DIAGRAM6MXZ-2A20NAOB444C--1.qxp 07.10.18 2:18 PM Page 25

26MXZ-2A20NA - 1OB444C--1.qxp 07.10.18 2:18 PM Page 26

27MXZ-3A30NAOB444C--1.qxp 07.10.18 2:18 PM Page 27

28MXZ-3A30NA - 1OB444C--1.qxp 07.10.18 2:18 PM Page 28

29F65 FUSE(T6.3AL250V)HC930INTELLIGENT POWER MODULERT61DEFROST THERMISTORR64A,BFAN MOTORFUSE(T3.15AL250V)R930A,BRESISTORPOWER FACTOR CONTROLLERNOISE F

3INFORMATION FOR THE AIR CONDITIONER WITH R410A REFRIGERANT• This room air conditioner adopts HFC refrigerant (R410A) which never destroys the ozone l

301Ball valve withservice portBall valveStrainer#100PowerreceiverLEV ALEV BOil separatorCompressorDefrost thermistorRT61DistributorMuffler4-way valveL

31Indoor unitExtension pipe diameterclass Pipe diameterLiquid 1/4 Liquid 1/409Gas 3/8 Gas 3/8Liquid 1/4 Liquid 1/412Gas 3/8 Gas 3/8Liquid 1/4 Liquid 1

32Indoor unitCBall valve withservice portBall valveDistributorPowerreceiverLEV ALEV BLEV COil separatorCompressorHigh-pressureswitchDistributorMuffler

33● Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes, refer to the tables below. ● When dia

34Stop valve (with service port)Stop valvePowerreceiverLEV ALEV BLEV COil separatorCompressorMuffler4-way valveLEV FIndoor unitCIndoor unitBIndoor uni

35● Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes, refer to the tables below. ● When dia

36DATA811CapacitySHFInputOutdoor unitPower supply (V, phase, Hz)InputComp. current (208/230V)Fan motor current (208/230V)Condensing pressureSuction p

3711CapacitySHFInputOutdoor unitPower supply (V, phase, Hz)InputComp. current (208/230V)Fan motor current (208/230V)Condensing pressureSuction pressu

38CapacitySHFInputOutdoor unitPower supply (V, phase, Hz)InputComp. current (208/230V)Fan motor current (208/230V)Condensing pressureSuction pressure

398-1. OPERATING RANGE(1) POWER SUPPLY11Outdoor unitRating208/230V 60Hz 1[Guaranteed VoltageModelMin. 198V Max. 253V208V230VMXZ-2A20NAMXZ-2A20NA -MX

4R410A tools Can R22 tools be used?Gas leak detectorR410A has high pressures beyond the measurement range of existing gauges. Hose material has been c

40MXZ-2A20NA MXZ-2A20NA - MXZ-3A30NA MXZ-3A30NA - MXZ-4A36NAThe standard specifications apply only to the operation of the air conditioner under norma

4109 class(36Hz)15 class(77Hz)12 class(50Hz)80 85 90 95 100 105 11080 85 90 95 100 105 11079757268647975726864Indoor unit class(Inverter output freque

428-3. Capacity and input correction by means of inverter output frequency (OUTDOOR UNIT : MXZ-2A20NA MXZ-2A20NA - )10 50 1000.51.01.52.00 50 1000.51

43(OUTDOOR UNIT:MXZ-3A30NA MXZ-3A30NA - MXZ-4A36NA )10 50 1000.51.01.52.00 50 1000.51.01.52.00 50 1000.51.01.52.00 50 1000.51.01.52.00 50 1000.51.01.

448-4. Outdoor low pressure and outdoor unit current 1. 09-class unit in single operation (OUTDOOR UNIT : MXZ-2A20NA MXZ-2A20NA - )(1) COOL operation

452. 12-class unit in single operation (OUTDOOR UNIT : MXZ-2A20NA MXZ-2A20NA - )(1) COOL operation165 70 75 80 85 90 95 100 105 110 11512014015016017

463. 15-class unit in single operation (OUTDOOR UNIT : MXZ-2A20NA MXZ-2A20NA - )(1) COOL operation165 70 75 80 85 90 95 100 105 110 11512013014015016

474. 09-class unit in single operation (OUTDOOR UNIT : MXZ-3A30NA MXZ-3A30NA - MXZ-4A36NA )(1) COOL operation11Data is based on the condition of indo

485. 12-class unit in single operation (OUTDOOR UNIT : MXZ-3A30NA MXZ-3A30NA - MXZ-4A36NA )(1) COOL operation165 70 75 80 85 90 95 100 105 110 115110

496. 15-class unit in single operation (OUTDOOR UNIT : MXZ-3A30NA MXZ-3A30NA - MXZ-4A36NA )(1) COOL operation165 70 75 80 85 90 95 100 105 110 115120

5R410APipe diameter(inch)1/43/81/25/817 [11/16]22 [7/8]26 [1-1/32]29 [1-5/32]Dimension of flare nutR22(mm) [inch]17 [11/16]22 [7/8]24 [15/16]27 [1-1/1

507. 17-class unit in single operation (OUTDOOR UNIT : MXZ-3A30NA MXZ-3A30NA - MXZ-4A36NA )(1) COOL operation1(2) HEAT operation<How to work fixed

518. 24-class unit in single operation (OUTDOOR UNIT : MXZ-3A30NA MXZ-3A30NA - MXZ-4A36NA )(1) COOL operation165 70 75 80 85 90 95 100 105 110 115130

SERVICE FUNCTIONS10ACTUATOR CONTROL529Relation between main sensor and actuatorMXZ-2A20NA MXZ-2A20NA - MXZ-3A30NA MXZ-3A30NA - MXZ-4A36NA11Discharge t

5310-2. Auto line correcting <MXZ-3A30NA - , MXZ-4A36NA >Outdoor unit has an auto line correcting function which automaticallydetects and corre

TROUBLESHOOTING54113. Troubleshooting procedure1) First, check if the OPERATION INDICATOR lamp on the indoor unit is flashing on and off to indicate a

55The left lamp of OPERATION INDICATORlamp (Indoor unit)OFF2-time flash3-time flash4-time flash5-time flash6-time flash7-time flash8-time flashLightin

56Operation startCheck the outdoor unit LED indicator.Refer to 11-6.A "Check of power supply".• Indoor unit serial signal errorRefer to 11-6

5711-4. Troubleshooting check table LED2LED1Outdoor electronic control P.C. board (Parts side)Lighting LED1LED2Lighting LED1(Red) LED2(Yellow)Lighting

58Primary current protectionSecondary current protectionHigh-pressure protectionDefrosting in cooling3 timesLightingDischarge temperatureprotection• C

5911-5. Trouble criterion of main parts MXZ-2A20NA MXZ-2A20NA - MXZ-3A30NA MXZ-3A30NA - MXZ-4A36NA11NormalDischarge temperaturethermistor (RT62)Fin te

6MXZ-3A30NAAir inletDrain outlet(Back and side)Air outletAir inletDrain outlet(Back and side)Air outletMXZ-3A30NA - MXZ-4A36NA1Air outletDrain outletA

60AACheck of power supplyOutdoor unit does not operate. (LED display: display OFF)Turn ON the power supply.NoYesYesNoYesNoYesNoReplace the power board

61Is there rated voltage in the power supply?Is there any mis-wiring, poor contact, or wire disconnection of the indoor/outdoor connecting wire?W1 Mi

62CCCheck of R.V. coilNoYesNoYesNoYesNoYesNoYes1. Disconnect the lead wire leading to the compressor.2. 3 minutes after turning ON the power supply, s

63DDCheck of LEVNoYe sNoYe sTurn ON the power supply to the outdoor unit after checking LEV coil is mounted to the LEV body securely.Is "click -

64EEHow to check inverter/ compressor• When heating, room does not get warm.• When cooling, room does not get cool.NoNoYesYesYesNoYesNoDisconnect the

65FFCheck of outdoor thermistors• When thermistor is abnormal. ThermistorDefrostDischarge temperatureOutdoor heat exchanger temperature Gas pipe tempe

66HHCheck of HPSInfinity0 "NoYes1. Disconnect the connector CN681 in the electronic control P.C. board.2. Check the resistance of HPS after 1 min

7006005004003002001000Resistance (k")Temperature (˚F)Discharge temperature thermistor (RT62)3250 68 86 104 122 140 158 176 194 212 230 248-4 -14

68MXZ-3A30NA - MXZ-4A36NA1LED 1LED 2F931FUSET3.15AL250V(CN93220-90V ACGND5V DC5V DCpulse wave(To fanmotor(+)Rush current relay(–)R.V. coil (–)CN781CN6

69{CN912R.V. coil 208/230V AC208/230V ACInput208/230V ACOutput{{CN901To electroniccontrol P.C. boardMXZ-2A20NA MXZ-2A20NA - MXZ-3A30NA1F64 FUSET2AL250

7109121509+0909+1209+1512+12959595979797973.344.537.057.809.649.649.643.695.017.798.6210.6610.6610.66–––9,00011,50012,50010,0009,000(5,400 ~ 9,000)12,

70MXZ-2A20NA MXZ-2A20NA - MXZ-3A30NA MXZ-3A30NA - MXZ-4A36NA11294-370V DCOutput3. Outdoor Power board(Red)(White)Connect to the compressorVoltage amon

71DISASSEMBLY INSTRUCTIONS12(1) Slide the sleeve and check if there is a locking lever or not. (2) The terminal with this connector has the loc

72OPERATING PROCEDUREPHOTOS2. Removing the fan motor(1)Remove the top panel, the service panel, and the cabinet(Photo 1).(2)Disconnect the connectors

73OPERATING PROCEDURE PHOTOS5. Removing the reactor(1)Remove the top panel (Photo 1).(2)Remove the service panel, cabinet, back panel and the relaypa

74OPERATING PROCEDUREPHOTOS1. Removing the compressor(1)Remove the screws of the top panel, and remove the toppanel (Photo 1).(2)Remove the screws of

75OPERATING PROCEDUREPHOTOS3. Removing the 4-way valve(1)Remove the top panel (Photo 1).(2)Remove the service panel, rear panel, and pipe cover. Recov

76OPERATING PROCEDURE PHOTOS5. Removing the reactor(1)Remove the top panel (Photo 1).(2)Disconnect the reactor lead wire.(3)Remove the screws of the r

77OPERATING PROCEDUREPHOTOS1. Removing the compressor(1)Remove the screws of the top panel, and remove the toppanel.(2)Remove the screws of the servic

78OPERATING PROCEDUREPHOTOS3. Removing the 4-way valve(1)Remove the top panel (Photo 1, 2).(2)Remove the service panel, rear panel, and pipe cover(Pho

79OPERATING PROCEDURE PHOTOS5. Removing the reactor(1)Remove the top panel (Photo 1, 2).(2)Disconnect the reactor lead wire.(3)Remove the screws of th

81091215172409+0909+1209+1509+1709+2412+1212+1512+1715+1515+1717+1709+09+0909+09+1209+09+1509+09+1795959595959797979797979797979797979797973.664.586.0

80PARTS LIST (non-RoHS compliant)13MXZ-2A20NA13-1. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS3214 11192021225 6 7 8 9 10 1213141516171823OB444

81Symbolin WiringDiagramQ'ty/unitMXZ-2A20NARemarksParts No. Parts NameE02 939 232E02 817 009E02 939 521E02 B05 900E02 065 506E02 851

821098124357126MXZ-2A20NA13-2. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS11PARTS LIST (non-RoHS compliant)OB444C--3.qxp 07.10.18 8:51 PM Pag

83Symbolin WiringDiagramQ'ty/unitMXZ-2A20NARemarksParts No. Parts NameE02 851 501E02 A58 301E02 B05 440E02 B05 450E02 B05 444E02 927 374E02 A53 3

84MXZ-3A30NA13-3. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS32141315212324255612117891017141819221620PARTS LIST (non-RoHS compliant)OB444C--3.

85Symbolin WiringDiagramQ'ty/unitRemarksParts No. Parts NameMXZ-3A30NAM21 TK0 232M21 TK0 027M21 TK5 010M21 TK0 245T92 500 801T2W TK0

861110912435687MXZ-3A30NA13-4. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS12PARTS LIST (non-RoHS compliant)OB444C--3.qxp 07.10.18 2:26 PM Pag

87Symbolin WiringDiagramQ'ty/unitRemarksParts No. Parts NameMXZ-3A30NAM21 TK0 501T2W J7E 301T2W J7E 440T2W J7E 451M21 TK0 337T2W J7E 424T2W

88RoHS PARTS LIST (RoHS compliant)14MXZ-2A20NA MXZ-2A20NA - 14-1. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS13214 11192021225 6 7 8 9 10 12131

89Symbolin WiringDiagramQ'ty/unitMXZ-2A20NAMXZ-2A20NA -RemarksParts No. Parts Name1E12 939 232E12 817 009E12 939 521E12 B05 900E12 C15

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90109812435712611RoHS PARTS LIST (RoHS compliant)MXZ-2A20NA MXZ-2A20NA - 14-2. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS1OB444C--3.qxp 07.10

91Symbolin WiringDiagramQ'ty/unitMXZ-2A20NARemarksParts No. Parts NameMXZ-2A20NA -1E12 851 501E12 A58 301E12 B05 440E12 C15 440E12 B05 450E12

92MXZ-3A30NA14-3. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS32141315212324255612117891017141819221620RoHS PARTS LIST (RoHS compliant)OB444C--4

93Symbolin WiringDiagramQ'ty/unitRemarksParts No. Parts NameMXZ-3A30NAM21 L2V 232M21 L2V 027M21 L2V 010M21 L2V 245T92 505 801M21 L2V

941110912435687MXZ-3A30NA14-4. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS12RoHS PARTS LIST (RoHS compliant)OB444C--4.qxp 07.10.18 2:21 PM Pa

95Symbolin WiringDiagramQ'ty/unitRemarksParts No. Parts NameMXZ-3A30NAM21 L2V 501T2W L7V 301T2W L7V 440T2W L7V 451M21 L2V 337T2W L7V 424T2W

96MXZ-3A30NA - MXZ-4A36NA14-5. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS1321244220212223561211891014131718161915RoHS PARTS LIST (RoHS complia

97Symbolin WiringDiagramQ'ty/unitRemarksParts NameMXZ-3A30NA -MXZ-4A36NAParts No.11234567891011121314151617181920212223242526272829No.GGGGGGGGGGG

9810912435687MXZ-3A30NA - MXZ-4A36NA14-6. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS111RoHS PARTS LIST (RoHS compliant)OB444C--4.qxp 07.10.18

99Symbolin WiringDiagramQ'ty/unitRemarksParts No. Parts NameMXZ-3A30NA -MXZ-4A36NA1M21 L2V 501T2W L7V 301M21 0A1 440T2W 0A6 451T2W 2G6 451M21 L2V