SERVICE MANUAL - BVT Partners OÃ

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'11 • SCM-SM-1101.5 Outline of automatic operation(1) Determination of operation mode(a) SRK20, 25, 35, 50, 60ZJX, SRF and SRR seriesThe unit checks the indoor air temperature and the outdoor air temperature after operating the indoor and outdoor blowersfor 20 seconds, determines the operation mode and the indoor air temperature setting correction value, and then enters inthe automatic operation.Cooling27.525.5Indoor air temperature (°C)Dehumidifying19.5Heating18 30Outdoor air temperature (°C)1) The unit checks the temperature every hour after the start of operation and, if the result of check is not same as the previousoperation mode, changes the operation mode.2) When the unit is started again within one hour after the stop of automatic operation or when the automatic operation is selectedduring heating, cooling or dehumidifying operation, the unit is operated in the previous operation mode.3) Setting temperature can be adjusted within the following range. There is the relationship as shown below between the signalsof the wireless remote controller and the setting temperature.◆ SRF seriesUnit : °CSignals of wireless remote control (Display)–6 –5 –4 –3 –2 –1 ±0 +1 +2 +3 +4 +5 +6Setting Cooling 0 21 22 23 24 25 26 27 28 29 30temperature Dehumidifying 18 19 20 21 22 23 24 25 26 27 28 29 30Heating 0 21 22 23 24 25 26 27 28 29 30 31 32◆ SRK, SRR seriesUnit : °CSignals of wireless remote control (Display)–6 –5 –4 –3 –2 –1 ±0 +1 +2 +3 +4 +5 +6Setting Cooling 0 21 22 23 24 25 26 27 28 29 30temperature Dehumidifying 19 20 21 22 23 24 25 26 27 28 28 30 31Heating 0 21 22 23 24 25 26 27 28 29 30 31 324) When the unit is operated automatically with the wired remote controller connected, the cooling operation is controlled accordingto the display temperatures while the setting temperature is compensated by +1°C during dehumidifying or by +2°C duringheating.(b)SRK25, 35ZJR-S, 20, 25, 35, 50ZJ-S, 71ZK-S seriesCooling27.525.5Indoor air temperature (˚C)18.0AHeatingDehumidifying18 30Outdoor air temperature (˚C)
'11 • SCM-SM-110 Signals of wireless remote controller (Display)–6 –5 –4 –3 –2 –1 0 +1 +2 +3 +4 +5 +6CoolingSettingDehumidifyingtemperatureHeating4) When the unit is operated automatically with the wired remote controller connected, the cooling operation is controlled accordingto the display temperatures while the setting temperature is compensated by +1°C during dehumidifying or by +2°Cduring heating.(c) FDTC, FDEN and FDUM seriesRefer to page 23.1.6 Operation permission/prohibition control(Refer to the FDTC, FDEN and FDUM series by 31 page)The air conditioner operation is controlled by releasing the jumper wire (J3) on the indoor PCB and inputting the externalsignal into the CnT.Note (1) Please install the separately-sold Interface kit (SC-BIK-E). Remove the jumper wire (J1 or J3) from the Interface kit circuit board.(1) The operation mode is switched over between Permission and Prohibition by releasing the jumper wire (J3)on the indoor PCB.When the jumper wire (J3) is short circuited When the jumper wire (J3) is releasedNormal operation is enable (when shipping)Permission / Prohibition modeWhen CnT input is set to ON, the operation starts When Cnt input is set to ON, the operation mode isand if the input is set to OFF, the operation stops. changed to permission and if input is set to OFF theFor the CnT and remote control inputs, the input operation is prohibited.which is activated later has priority and can start andstop the operation.(2) In the case of CnT input ON (Operation permission)(a) The air conditioner can be operated or stopped by the remote control signal.(When the "CENTER" mode is set, the operation can be controlled only by the center input.)(b) When the CnT input is changed from OFF to ON, the air conditioner operation mode is changed depending on the statusof the jumper wire (J1) on the indoor control board.When the jumper wire (J1) is short circuited When the jumper wire (J1) is releasedThe signal (1) above starts the air conditioner.When the CnT input is set to ON, the air conditioner(Shipping status)starts operation. After that, the operation of the airconditioner depends on (a) above. (Local status)(3) In the case of CnT input OFF (Operation prohibition)(a) Air-conditioner is unable to control the operation/stop, ect. in accordance with signals from the remote controller signalwire.(b) Air-conditioner stops as it changes CnT input ON → OFF.- 38 -
Page 1 and 2: Manual No.'11•SCM-SM-110updated N
Page 3 and 4: 1.7 External control (remote displa
Page 5 and 6: 7. COMPONENT REPLACEMENT ..........
Page 7 and 8: Model SRK71ZK-SRemote controllerOpe
Page 9 and 10: (c) SRR seriesRemote controllerOper
Page 11 and 12: '11 • SCM-SM-110• Model SRK20,
Page 13 and 14: (7) Econo operation(a)(b)(c)(d)Pres
Page 15: '11 • SCM-SM-110(e) Multi-directi
Page 20 and 21: 1.2 FDTC, FDEN and FDUM series(1) R
Page 22: (b)Wireless remote controllerIndica
Page 25 and 26: (d)(e)(f)'11 • SCM-SM-110Timer op
Page 27 and 28: (i)(j)'11 • SCM-SM-1102) When the
Page 29 and 30: (m) Drain motor (DM) control [Appli
Page 31 and 32: (s)(t)'11 • SCM-SM-110SW2 : For s
Page 33 and 34: '11 • SCM-SM-1102) Remote operati
Page 35 and 36: '11 • SCM-SM-1101.3 Outline of he
Page 37: '11 • SCM-SM-1101.4 Outline of co
Page 41 and 42: 1.8Protective control function'11
Page 43 and 44: '11 • SCM-SM-110(5) Heating high
Page 45 and 46: '11 • SCM-SM-110(8) Freezing cycl
Page 47 and 48: '11 • SCM-SM-110(13) Current cut(
Page 49 and 50: '11 • SCM-SM-110High pressure sen
Page 51 and 52: '11 • SCM-SM-1102 MAINTENANCE DAT
Page 53 and 54: (5) Self-diagnosis table(i) SCM40,
Page 55 and 56: '11 • SCM-SM-110(6) Service mode
Page 57 and 58: (Example)OperationswitchingCooling2
Page 59 and 60: (ii) SCM100,125Number of flashes wh
Page 61 and 62: - - '09•SRK-DB-087D'11 • SCM-SM
Page 63 and 64: - 62 - '09•SRK-DB-087D'11 • SCM
Page 65 and 66: (7) Inspection procedures correspon
Page 67 and 68: Over heat of compressor64)mainError
Page 69 and 70: '11 • SCM-SM-110Defective compres
Page 71 and 72: '11 • SCM-SM-110(C) Power transis
Page 73 and 74: CAUTION- HIGH VOLTAGEHigh voltage i
Page 75 and 76: CAUTION- HIGH VOLTAGEHigh voltage i
Page 77 and 78: '11 • SCM-SM-110(a)Inspection of
Page 79 and 80: (ii) Outdoor unit(a) Model SCM40, 4
Page 81 and 82: '11 • SCM-SM-110(iv) Display sequ
Page 83 and 84: (i) FDTC series• Control PCBRepla
Page 85 and 86: (ii) FDEN seriesSet to an appropria
Page 87 and 88: '11 • SCM-SM-110• Power PCBPSB0
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'11 • SCM-SM-110(4) Check of anom
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2.2.2 Troubleshooting flow(1) List
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'11 • SCM-SM-110Error codeLED Gre
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FUSE250V 15ATB1 250V 20ABK BKLR INP
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t°t°t°t°t°- 140 -RWC000Z247POW
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DISPLAYWIRELESS RECEIVERBACK-UP SWT
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LM2M M MMCNYDSCNSLM15 5CNXCNFUSMI5C
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DISPLAYWIRELESS RECEIVERBACK-UP SWA
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DMM1RDRDWHWH5F250V0.16ACNSCNWCNYRDU
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PConnecting line betweenindoor unit
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Gas lineIndoor unit(φ9.52)(φ9.52)
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Outdoor UnitCooling cycleHeating cy
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Gas lineLiquid line*1(φ9.52 or φ1
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5ANEREDe units.readblesition.rm.nno
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lethatof ailarlue.'11 • SCM-SM-11
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6CNEREDe units.readblesition.rm.nno
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'11 • SCM-SM-1107BEWARE OF WRONG
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'11 • SCM-SM-110
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'11 • SCM-SM-110
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eadableCNERSEDe units.sition.rmm.nn
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TerminalcoverScrewnit F2 33nit Folp
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BEFORE INSTALLATION Before installa
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ELECTRICAL WIRING WORKPreparation o
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seriously affect the user’s healt
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illustration, hold the panel at bot
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illustration, hold the panel at bot
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BEFORE INSTALLATIONBefore installat
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Concealed installationInstall the i
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30Hang301236Drain hose135 78 Liquid
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81 1 Before installation• Install
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drainithinP-20n site)P-20re on site
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'11 • SCM-SM-110Note : This funct
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'11 • SCM-SM-110Before installati
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Interconnecting wiringEarthSignal c
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.e..○This model is middle static
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oleh thethethelation.rmfulg into, d
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'11 • SCM-SM-110(7) Replacement p
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NO. Functions SRK SRR SRF Outline o
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Fan and fan motor (FMo1)7. Detach t
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Compressor (CM)7. Remove the top co
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Main PCB (upper layer)1. Loosen the
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Main PCB (upper layer)Layout of Mai
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Sub PCB (Lower layer)6. Loosen 4 sc
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4-way valve coil1. Disconnect the c
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Fan and fan motor (FMo1)7. Loosen 4
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Compressor (CM)9. Remove the contro
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Compressor (CM)13. Loosen 3 nuts of
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Sub PCB (PWB4) on the 1st layer2. D
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'11 • SCM-SM-110Noise filter PCB
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8 CHECKING PROCEDURE8.1 Models SCM7
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Suction pipetemp. sensor(Tho-S)Outd
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'11 • SCM-SM-110S-1 (WH) C-1 (RD)
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NameResistance 0.293Ω34Discharge p
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'11 • SCM-SM-110P2 N2(RD) (BL) CN
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'11 • SCM-SM-110INVERTER MULTI-SP
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