Mitsubishi SEZ-KD50VAQ Service Manual

TECHNICAL & SERVICE MANUALCONTENTS1. PART NAMES AND FUNCTIONS ········22. SPECIFICATIONS·································43. OUTLINES AND DIMENSIO

1090807060504030201063 125 250 500 1000 2000 4000 8000APPROXIMATETERESHOLD OFHEARING FORCONTINUOUSNOISENC-60NC-50NC-40NC-30NC-20NC-70OCTAVE BAND SOUND

1190807060504030201063 125 250 500 1000 2000 4000 8000APPROXIMATETERESHOLD OFHEARING FORCONTINUOUSNOISENC-60NC-50NC-40NC-30NC-20NC-70OCTAVE BAND SOUND

12INDOOR FAN PERFORMANCE AND CORRECTED AIR FLOWSEZ-KD25VAQ(External static pressure 15Pa) 220-240V 50/60HzExternal static pressure (Pa)01020304050Air

13External static pressure (Pa)SEZ-KD35VAQ(External static pressure 15Pa) 220-240V 50/60HzAirflow rate(m3/min)010203040506789101112MiddleLowHighLimit

14External static pressure (Pa)SEZ-KD50VAQ(External static pressure 15Pa) 220-240V 50/60HzAirflow rate(m3/min)891011 12 13 14 15 1605040302010HighLim

15External static pressure (Pa)SEZ-KD60VAQ(External static pressure 15Pa) 220-240V 50/60HzAirflow rate(m3/min)91011121314151617181905040302010MiddleL

16External static pressure (Pa)SEZ-KD71VAQ(External static pressure 15Pa) 220-240V 50/60HzAirflow rate(m3/min)0504030201011 12 13 14 15 16 17 18 19 2

17OUTLINES AND DIMENSIONS3Unit : mm2420169007005009751060860660LJHK{12.7SEZ-KD71VAQSEZ-KD60VAQSEZ-KD50VAQSEZ-KD35VAQ700 752 798 660 7 600 800{15.88{9.

184WIRING DIAGRAML1:ONLY SEZ-KD71VAQINSIDE SECTION OF CONTROL BOXCN22(BLUE)LED1CN3C(BLUE)CNMFSW2SW1CN32CN20(RED)CN44CN4FCN41SWEONOFFCN51FS TH2 TH5

19REFRIGERANT SYSTEM DIAGRAM5Pipe temperature thermistor/liquid (TH2)DistributorCondenser/evaporator temperature thermistor(TH5)Room temperature therm

21PART NAMES AND FUNCTIONSIndoor UnitAir outlet duct flangeAir outletAir inlet● Operation buttonsOnce the controls are set, the same operation mode ca

206TROUBLESHOOTING6-1. CAUTIONS ON TROUBLESHOOTING(1) Before troubleshooting, check the followings:1 Check the power supply voltage.2 Check the indoor

21•If the unit cannot be operated properly after the test run has been performed, refer to the following table to remove the cause.SymptomCauseWired r

22• If the unit cannot be operated properly after the above test run has been performed, refer to the following table to remove the cause.On the wirel

23Indicates whether control power is supplied. Make sure that this LED is always lit.Indicates whether power is supplied to the remote controller. Thi

246-3. SELF-DIAGNOSIS ACTION TABLENote: Refer to the manual of outdoor unit for the details of display such as F, U, and other E.Error CodeAbnormal po

25Error CodeAbnormal point and detection method CauseCountermeasureP6Freezing/overheating protection isworking1 Freezing protection (Cooling mode)The

26Error CodeAbnormal point and detection method CauseCountermeasureP9Abnormality of pipe temperature ther-mistor / Condenser-Evaporator (TH5)1 The uni

27E61 Contact failure, short circuit or,mis-wiring (converse wiring) ofindoor/outdoor unit connectingwire2 Defective transmitting receivingcircuit of

286-4. TROUBLESHOOTING BY INFERIOR PHENOMENA Note: Refer to the manual of outdoor unit for the detail of remote controller.PhenomenaCauseCountermeasur

296-5. TEST POINT DIAGRAM6-5-1. Indoor controller boardCN01 Power supply voltage (220 - 240VAC)SWE Emergency operationSW1 Model selectionSW2 Capacity

3● DisplayFor purposes of this explanation,all parts of the display are shownas lit. During actual operation, onlythe relevant items will be lit.˚F˚C˚

306-6. TROUBLE CRITERION OF MAIN PARTSRoom temperaturethermistor(TH1)Condenser/evaporator temperature thermistor(TH5)Measure the resistance with a tes

316-7. DC FAN MOTOR (FAN MOTOR/ INDOOR CONTROLLER BOARD) Notes · High voltage is applied to the connecter (CNMF) for the fan motor. Give attention to

321. Control box1. Removing the control box cover(1) Remove the two fixing screws on the cover (A)to remove it.2. Thermistor (Intake air)1. Remove the

333. DrainpanExercise caution when removing heavy parts.1. Removing the filter and the bottom plate(1) Push up the tab on the filter, and pull out the

344. Thermistor (Condenser / evaporator)(Liquid pipe)1. Remove the drain pan according to the proce-dure in section [3].2. Removing the Heat exchanger

353. Removing the motor cable(1) Remove the motor cable threw the rubberbush.4. Removing the fan motor and the Sirocco fan(1) Remove the two motor fix

36(K)Fig. 13(2) Remove the two bearing retainer screws toremove the bearing.Fig. 146. Bearing [KD50·60·71VAQ model only]1. Removing the bearing(1) Rem

42SPECIFICATIONS kW kW A˚C(˚F) FanPa kWm3/minmm In.kg mm(in.) A Liquidmm(in.) Gasmm(in.)mm(in.)dB<A> Net weightR410A Motor output Airflow rat

New publication, effective Dec. 2010Specifications subject to change without notice.HWE10080Printed in JapanTM

5 kW kW A˚C(˚F) FanPa kWm3/minmm In.kg mm(in.) A Liquidmm(in.) Gasmm(in.)mm(in.)dB<A> Net weightR410A Motor output Airflow rate(Low-Mid-High)

6 kW kW A˚C(˚F) FanPa kWm3/minmm In.kg mm(in.) A Liquidmm(in.) Gasmm(in.)mm(in.)dB<A> Net weightR410A Motor output Airflow rate(Low-Mid-High)

790807060504030201063 125 250 500 1000 2000 4000 8000APPROXIMATETERESHOLD OFHEARING FORCONTINUOUSNOISENC-60NC-50NC-40NC-30NC-20NC-70OCTAVE BAND SOUND

890807060504030201063 125 250 500 1000 2000 4000 8000APPROXIMATETERESHOLD OFHEARING FORCONTINUOUSNOISENC-60NC-50NC-40NC-30NC-20NC-70OCTAVE BAND SOUND

990807060504030201063 125 250 500 1000 2000 4000 8000APPROXIMATETERESHOLD OFHEARING FORCONTINUOUSNOISENC-60NC-50NC-40NC-30NC-20NC-70OCTAVE BAND SOUND