Mitsubishi Electric CITY MULTI P250YMF-B Installationshandbuch

AIR CONDITIONERS CITY MULTI Series Y, Super YService HandbookModels PUHY-400YMF-B, 500YMF-BPUHY-P400YMF-B, P500YMF-BPUHY-600YSMF-B, 650YSMF-B, 700YSMF

–7–[7] Charging of RefrigerantR407C must be in a liquid state when charging, because it is a non-azeotropic refrigerant.For a cylinder with a syphon a

–97–ItemAt compressor is startedAfter thermostat reset or 3minutes after startupCompressor stopped duringcooling or heating modeAfter operation has be

–98–(5) Oil return control (Electronic expansion valve (SLEV); Variable Capacity Unit only)• The amount of opening of the oil-return LEV (SLEV) is det

–99–5) Change in number of operating indoor units while defrosting• If the number of indoor units changes while the outdoor unit is defrosting, the de

–100–(10) Liquid Distribution Control (electronic expansion valve (LEV2) constant capacity unit only)• Liquid distribution control refers to the proce

–101–(11) Liquid Refrigerant Correction ControlThe liquid refrigerant correction control adjusts the liquid refrigerant amounts between both accumulat

–102–(12) Refrigerant recovery controlRefrigerant recovery is conducted to prevent refrigerant from accumulating in the stopped unit (fan unit), the u

–103–(14) Control at initial starting• When the ambient temperature is low (5°C or less in cooling and – 5°C or less in heating), initial starting wil

–104–<Initial Start Control Timingchart>For steps 1 - 3Note 1: If the frequency of No. 1 compressor is above the specified level at the end of S

–105–For steps 4 - 6(Example 1)A-minuteStep 4 Step 5 Step 610minutes5minutesON/OFF of No.1 compressorON/OFF of No.2 compressorON/OFF of No.3 compresso

–106–Note 1: If Step 4 is interrupted (compressor stopped by thermostat OFF or regular stop), Step 4 will be redone atrestart.Note 2: If Step 5 is int

–8–22222 COMPONENT OF EQUIPMENT[1] Appearance of Components1 Variable capacity unitRearAmbient temperature SensorHeat ExchangerAccumulatorHeat Exchang

–107–(17) Emergency response operating modeThe emergency operation mode is a mode in which the unit is run in an emergency to respond to the trouble w

–108–2) Terminating Emergency Response Operation Mode(Termination Conditions)When one of the following conditions is met, emergency operation mode is

–109–[2] Operation Flow Chart(1) Outdoor unit (Cooling, heating modes)Note: 1 For about 2 minutes after turning on power source, address and group inf

–110–(2) Indoor unit (Cooling, heating, dry, and fan modes)Note: 1 At indoor unit LEV full closed, the opening angle indicates 60.Note: 2 The error mo

–111–YESNOYESYESYESNONO(3) Cooling operationNormal operationsTest runStopCooling operation4-way valve OFFIndoor unit fanoperationsTest run startThermo

–112–(4) Heating operationNote: 1 When the outdoor unit goes into defrost operations, a defrost operation command is sent to the indoor unit.Once the

–113–(5) Dry operationNote: 1 When indoor unit inlet temperature exceeds 18°C, outdoor unit (compressor) and indoor unit fan start intermittent operat

–114–1 Adjustment of super heat of heat ex-changer outlet port of indoor unitduring cooling.2 Adjustment of sub-cool of heat ex-changer outlet port of

–115–1 Detects the outdoor air temperature.2 Performs fan control, liquid levelheater control, opening settings ofLEV for oil return and other functio

–116–Resistance checkResistance checkConductivity checkusing tester.Conductivity checkusing tester.Conductivity checkResistance checkResistance checkB

–9–Controller BoxRELAY boardFANCON boardMAIN board INV boardChoke coil (L2)Magnetic contactor(52C2)Magnetic contactor(52F)Transistor module(TRM)Therma

–117–SV1Discharge –Suction BypassSV2capacitycontrol (fullload)SV3capacitycontrol(unload)SV4Discharge –Suction BypassSV5bLiquid pipesLEV1(SC coil)LEV2C

–118–[4] Resistance of Temperature SensorThermistor for low temperatureThermistor R0 = 15 kΩ ± 3 % (TH3 ~ 9a, 9b,10a,10b) Thermistor R120 = 7.465 kΩ ±

–119–66666 REFRIGERANT AMOUNT ADJUSTMENTBy clarifying the relationship between the refrigerant amount and operating characteristics for Super Y Series

–120–(2) Refrigerant Volume1) Checking the Operating ConditionOperate all the indoor units on cooling or on heating, checking the discharge temperatur

–121–(3) Additional Refrigerant Charge VolumeAt the time of shipping from the factory, the outdoor unit is charged with the amount of refrigerant show

–122–[3] Refrigerant Volume Adjustment Mode Operation(1) ProcedureDepending on the operating conditions, it may be necessary either to charge with sup

–123–Caution:Do not let the drained out refrigerant escape to the outside atmosphere.• Always be sure to charge with refrigerant from the liquid phase

–124–PUHY-(P) 600·650·700·750 YSMF-BOver 6 minutes have passed since variable andconstant capacity unit startup.AL1 and AL2 are0 or 1.Start adjustment

–125–(3) Refrigerant adjustment in heating season (Flow chart)PUHY-(P) 400·500 YMF-BStartAdjustmentHas the operating condition stabilized?Is the accum

–126–PUHY-(P) 600·650·700·750 YSMF-BYESNOStart AdjustmentAdjustment completedRun all the indoor units in theheating condition in the testrun mode.Has

–10–Noise filter (NF)DC reactor (DCL)Noise filter boxNoise Filter Box(Rear of the controller box)

–127–Note: 1 If there are any units which are not operating, it will cause refrigerant to accumulate, so by all means operate all theindoor units. Als

–128–(4) R22 Gauge pressure - saturation temperature conversion chartPressure→↓0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.91 – 25.2 – 24.0 – 22.8 – 21.7 – 20

–129–77777 TROUBLESHOOTING[1] Principal Parts(1) Judging FailurePressure Sensor (Discharge/Suction Pressure Sensor)1) Check for failure by comparing t

–130–• Connector connection specifications on the pressure sensor body side.The connector’s pin numbers on the pressure sensor body side differ from t

–131–5) SV6When No. 2 compressor is operating and No. 2 compressor is stopped, the main SV6 will be set to ON, making itpossible to confirm operation

–132–2) SV2, 3 (Full-load / Un-load switching valve) PUHN-P-YMF-B only1 It starts in un-load in the initial start mode and during defrosting, and star

–133–Outdoor LEVThe valve opening angle changes in proportion to the number of pulses.(Connections between the outdoor unit’s MAIN board and SLEV, LEV

–134–2 LEV2Pulse Signal Output and Valve OperationOutput (Phase) Output StateNo. 1 2 3 4ø1 ON OFF OFF ONø2 ON ON OFF OFFø3 OFF ON ON OFFø4 OFF OFF ON

–135–IndoorOutdoorIndoorOutdoorIndoorOutdoorIndoorIndoorOutdoorFailure Mode Judgment Method Treatment Affected LEVMicrocomputerDriver CircuitFailureLE

–136–Outdoor LEV (SLEV, LEV1) Coil Removal Procedure (configuration)As shown in the figure, the outdoor LEV is made in such a way that the coils and t

–11–MAIN boardCNTR CNFC1CNVCC4Power source forcontrolCNS1M-NETtransmissionCNS2M-NETtransmis-sion(Centralizedcontrol)CN40M-NET transmissionpower supply

–137–Power transistorMeasure resistances between each terminal of transistor module with tester, and use the results for troubleshooting.Specified res

–138–Thyristor module (SCRM)<Judgment Method> Measure the resistance between each of the SCRM pins and judge if there is a failure or not bythe

–139–12*1 Check the transformer in accordance with the “TROUBLE SHOOTING” in the indoor unit’s service handbook.Symptom Cause Checking method & co

–140–Symptom Cause3(Without using MELANS)1) Outdoor unit address is set to “000.”2) Erroneous address.1 Address setting miss of indoor unit to be coup

–141–Symptom Cause Checking method & countermeasure“88” appears on re-mote controller at theregistration and accessremote controller4 [Generates a

–142–Transmission Power Circuit (30 V) Check ProcedureIf “ ” is not displayed by the remote control, investigate the points of the trouble by the fo

–143–(3) Investigation of transmission wave shape/noiseControl is performed by exchanging signals between outdoor unit, indoor unit and remote control

–144–3) Checking and measures to be taken(a) Measures against noiseCheck the items below when noise can be confirmed on wave shape or the error code i

–145–4) Treatment of Inverter and Compressor TroublesIf the compressor does not work when error codes 4210, 4240, 4310 or 4340 are detected, determine

–146–5) Treatment of Fan Motor Related TroublesCondition Possible Cause Check Method and TreatmentIf there is an open phase condition before the break

–12–INV boardCN3 CN2-1 CN2-2 CN2-3CNVDCCN52CCNFANCNAC2CNR CNRS2 SW1CNCTCN30VCNTHCNL2CNVCC1CNVCC2Power source1 L23 NPower supply (5 V)Power supply1-2 3

–147–6) Troubleshooting at breaker trippingCheck items1 Check the breaker capacity.2 Check the a short circuit or grounding in the electricalsystem ot

–148–7) Individual Parts Failure Judgment Methods.[Caution at replacement of inverter parts]1 The transistor module and INV board should be replaced t

–149–Model PUHY-400YMF-B, 500YMF-B

–150–8) Compressor Replacement ProcedureWhen replacing a compressor, please proceed by the following procedure.• When replacing the No. 1 compressor (

–151–(13) Solder the discharge piping, suction piping, volume control valve piping (All but model PUHY-400YMF-B) andprocess piping (All but model PUHY

–152–Belt HeaterNo2. CompressorOil EqualizationPipeBelt Heater Compressor shell temperature sensor(TH10c, PUHY-P-YMF-B only)FasteningFitting 1Flare Nu

–153–Around the No. 2 Compressor (All but model PUHY-400 YMF-B)Insulation + Discharge ThermistorTerminal CoverBelt HeaterMounting fittings 2Discharge

–154–(4) Constant Capacity UnitObserve the following notes when changing the compressor(1) Make sure the main power supply is turned off.If the reason

–155–Process pipePipe joints for Volume Control(PUHN-P-YMF-B only)Terminal coverInsulation + DischargethermistorDischarge pipe jointMounting fittingBe

–156–Check Code Check Content0403 Serial transmission abnoramlity0900 Trial operation1102 Discharge temperature abnormality1111 Low pressure saturatio

–13–FANCON boardCNV CNWCNU CNFC2

–157–Check Code Check Content6607 No ACK abnormality6606 Communications with transmission processor abnormality6608 No response abnormality7100 Total

–158–[2] LED monitor display and Countermeasures Depending on the Check Code Displayed(1) MechanicalChecking code Meaning, detecting method Cause Chec

–159–Checking code Meaning, detecting method Cause Checking method & Countermeasure111111121113Lowpressuresaturationtempera-turesensorabnor-mality

–160–Checking code Meaning, detecting method Cause Checking method & Countermeasure13011302Low pressureabnormality(Outdoor unit)High pressureabnor

–161–A error is detected in the outlettemperature super heat (TH11,12-Tc) and in the liquid level in theaccumulator as indicated below.1 If the liquid

–162–Checking code Meaning, detecting method Cause Checking method & Countermeasure15051559Suctionpressureabnormality(Variablecapacity unit)Oil ba

–163–Checking code Meaning, detecting method Cause Checking method & Countermeasure2500250225034103Leakage (water)abnormality(Indoor unit)Drain pu

–164–1) Power cord problem(constant capacity unit is discon-nected from the power source)2) Power board fuse (F01, F02) isblown.3) Power board is defe

–165–Checking code Meaning, detecting method Cause Checking method & Countermeasure41164200Fan speedabnormality(motorabnormality)(Indoor unit)VDC

–166–Checking code Meaning, detecting method Cause Checking method & Countermeasure42104220Breaking ofovercurrent(Variablecapacity unit)Bus voltag

–14–RELAY boardCN51C2 CNOUT2 CNRT2CN52F CN52C2 CNCH

–167–Checking code Meaning, detecting method Cause Checking method & Countermeasure42304240Radiator paneloverheatprotection(Variablecapacity unit)

–168–Discharge(TH11)(TH12)LowPressureSatura-tion (TH2)LiquidLevelDetection(TH3)LiquidLevelDetection(TH4)Liquid pipe(TH5)AmbientTempera-ture(TH6)Liquid

–169–Checking code Meaning, detecting method Cause Checking method & Countermeasure520153011When pressure sensor detects1 kg/cm2G (0.098 MPa) or l

–170–(2) Communication/systemCheckingcode66006602Meaning, detecting method Cause Checking method & CountermeasureMultiple address errorTransmissio

–171–Checkingcode66026603Meaning, detecting method Cause Checking method & CountermeasureTransmission processor hard-ware errorTransmission circui

–172–Checkingcode6606Meaning, detecting method Cause Checking method & CountermeasureCommunications with trans-mission processor errorCommunicatio

–173–6607Meaning, detecting methodNo ACK error When no ACK signal is detected in 6 continuous times with 30 second interval by transmission sidecontr

–174–Checkingcode6607(continued)Meaning, detecting methodNo ACK error When no ACK signal is detected in 6 continuous times with 30 second interval by

–175–Checkingcode6607(continued)Meaning, detecting methodNo ACK error When no ACK signal is detected in 6 continuous times with 30 second interval by

–176–Checkingcode6607(continued)Meaning, detecting methodNo ACK error When no ACK signal is detected in 6 continuous times with 30 second interval by

–15–2 Constant capacity unitRearHeat exchangerAccumulator Sub-cool coilAmbient temperature sensorSolenoid valve (SV3, PUHN-P-YMF-B only)Solenoid valve

–177–1) Total capacity of indoor units in thesame refrigerant system exceeds thefollowing:Model Total capacityPUHY-400 520PUHY-500 650PUHY-600 780PUHY

–178–If different units within one system are using different types of refrigerant as shown in table 1 below, the system will notoperate correctly.Tab

–179–[3] LED Monitor Display(1) How to read LED for service monitorBy setting of DIP SW1-1 ~ 1-8 and SW4-2, the unit operating condition can be observ

–180–No SW1 Item Display Remarks12345678910 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD801234567891011121314151617181920000000000010000000000100000000(Also include

–181–No SW1 Item Display Remarks12345678910 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8212223242526272829303132333435363738394041424344454647484950511010100000011

–182–No SW1 Item Display Remarks12345678910 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8525354555657585960616263646566676869707172737475767778798081828384850010110

–183–IC6 Address/Capacity CodeIC7 Address/Capacity CodeIC8 Address/Capacity CodeIC9 Address/Capacity CodeIC10 Address/Capacity CodeIC11 Address/Capaci

–184–0 ~ 9.999↑0000 ~ 9999↑↑↑↑– 99.9 ~ 999.90000 ~ 99990000 ~ 9999↑– 99.9 ~ 999.9↑↑↑↑↑↑↑↑↑↑↑↑↑00101110001010111000011011100011101110000001111000100111

–185–No SW1 Item Display Remarks12345678910 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8142143144145146147148149150151152153154155156157158159160161162163164165166

–186–No SW1 Item Display Remarks12345678910 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8172173174175176177178179180181182183184185186187188189190191192193194195196

–16–Controller BoxCONT boardTerminal block TB1powersourceTerminal block TB3transmissionFANCON boardTransformerNoise Filter (NF)Thyristor module(SCRM)M

–187–No SW1 Item Display Remarks12345678910 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8208209210211212213214215216217218219220221222223224225226227228229230231232

–188–No SW1 Item Display Remarks12345678910 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8235236237238239240241242243244245246247248249250251252253254255256257258259

–189–No SW1 Item Display Remarks12345678910 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8011100001011110000100000100010100010001001001000101100100010001010001010101

–190–No SW1 Item Display Remarks12345678910 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8101011001001101100101110110010000111001010011100100101110010110111001000111

–191–No SW1 Item Display Remarks12345678910 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8345346347348349350351352353354355356357358359360361362363364365366367368369

–192–No SW1 Item Display Remarks12345678910 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8381382383384385386387388389390391392393394395396397398399400401402403404405

–193–No SW1 Item Display Remarks12345678910 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8408409410411412413414415416417418419420421422423424425426427428429430431432

–194–No SW1 Item Display Remarks12345678910 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8Variable capacity unit43443543643743843944044144244344444544644744844945045

–195–No SW1 Item Display Remarks12345678910 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8Variable capacity unit47047147247347447547647747847948048148248348448548648

–196–No SW1 Item Display Remarks12345678910 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8Variable capacity unit49649749849950050150250350450550650750850951051100001

Contents1 PRECAUTIONS FOR DEVICESTHAT USE R407C REFRIGERANT ... 1[1] Storage of Piping Material ...

–17–CONT boardSWU2CNTRSWU1CNFC1SW3SW2CNS1M-NETtransmissionCN20Power supply1 N3 L1

–197–SV2, 3Only forthePUHN-P-YMF-BNo SW1 Item Display Remarks12345678910 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8Relay OutputDisplay 1 (blinkingdisplay)Check D

–198–No SW1 Item Display Remarks12345678910 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8Constant capacity unit25262728293031323334353637383940414243444546474849505

–199–No SW1 Item Display Remarks12345678190 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8Constant capacity unit64656667686970717273747576777879808182838485868788899

–200–No SW1 Item Display Remarks12345678910 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8Constant capacity unitCOMPOpera-tionSV452C1 21S4 SV1CH2, 310110210310410510

HEAD OFFICE MITSUBISHI DENKI BLDG. MARUNOUCHI TOKYO 100-8310 TELEX J24532 CABLE MELCO TOKYOService Handbook PUHY-400YMF-B, 500YMF-BPUHY-P400YMF-B, P50

–18–BV3TH6TH7TH8TH5CJ1O/S63HSTH11HEX2bHEX1bCJ2CV1SV4SV1CP1TH4TH3CP4BV2BV1TH12Comp2Comp1HEX2aHEX1aCV2SAMACP3aSV6SCCLEV163H163H221S4a21S4bSV5bSV22SV32ST

–19–2 PUHY-400·500YMF-BCP1ST6SV1SLEVCP4No.1Comp.TH8HEX2aTH5SV5bHEX1aTH6HEX2bHEX1b21S4b21S4aCJ163HSST5SV4SV6TH1163H1CV1O/SCJ2BV1ST1MASATH2CP2ST2BV2BV3S

–20–3 PUHY-P600·650·700·750YSMF-BDistributer(Gas)Indoor unitOil balancepipeBV3TH6TH7TH8TH5CJ1O/S63HSTH11HEX2bHEX1bCJ2CV1SV4SV1CP1TH4TH3CP4BV2BV1TH12Co

–21–21S4bHEX1bTH6TH10bHEX2b21S4aCJ163HSST5SV4SV6TH10aO/SST6CP1SV1HEX1aHEX2aSV5bTH5CV163H1TH11Comp1Comp2TH8ST10CP4SLEVTH4ST4ST8CJ363H2CV2CP3aTH12SV22

–22–40LW-FD. Indoor unitCassette ceilingCeiling concealedWall mountedCeiling suspendedFloor standingExposed ConcealedPLFY-PPLFY-P PEFY-P PKFY-P PCFY-P

–23–

–24–*3:NF is in the back of the Inverter Controller Box. (Refer to the <Unit Internal layout>.)642531642531BlackWhiteRedBlackWhiteRedCH11Fan mo

–25–FLAG3FLAG2FLAG1FLAG5FLAG6FLAG7<LED display>FLAG4FLAG8LED1TH7❇3PUHY-P400YMF-B -(P)500YMF-BPUHY-400YMF-BSV22MC263H2TH12SV5b21S4bSV6SV4SV1TH12

–26–2 PUHN-(P)200·250YMF-BModel 200: 24AModel 250: 27A*1<Difference of appliance>*1Appliance PUHN-P200·250YMF-BPUHN- 200·250YMF-BL2L1L3PE5GKGKGK

Safety precautionsBefore installation and electric works Before installing the unit, make sure you read allthe “Safety precautions”.s The “Safety prec

–27–Discharge (TH11/TH12)Heat exchanger outlet (TH5)InletAccumulatorOutletSuction (Comp) (No.1/No.2)Low pressure saturationtemperature (TH2)Upper (TH4

–28–Discharge (TH11/TH12)Heat exchanger outlet (TH5)AccumulatorInletOutletSuction (Comp)Low pressure saturationtemperature (TH2)Liquid levelUpper (TH4

–29–Discharge (TH11/TH12)Heat exchanger outlet (TH5)AccumulatorInletOutletSuction (Comp)Low pressure saturationtemperature (TH2)Liquid levelUpper (TH4

–30–27.0/19.5 27.0/19.535.0/24.0 35.0/24.055555555 5522.4 28.928.2/26.8/25.8 34.2/32.5/31.3164 17934420.0/4.4 20.0/4.3(1.96/0.43) (1.96/0.42)90/95 95/

–31–VariablecapacityunitConstantcapacityunitIndoor unitOutdoor unitItemsAmbient temp.Indoor unitPipingConditionIndoorOutdoorQuantityQuantity in operat

–32–VariablecapacityunitConstantcapacityunitIndoor unitOutdoor unitItemsAmbient temp.Indoor unitPipingConditionIndoorOutdoorQuantityQuantity in operat

–33–Discharge (TH11/TH12)Heat exchanger inlet (TH5)InletAccumulatorOutletSuction (Comp) (No.1/No.2)Low pressure saturationtemperature (TH2)Upper (TH4)

–34–Discharge (TH11/TH12)Heat exchanger outlet (TH5)AccumulatorInletOutletSuction (Comp)Low pressure saturationtemperature (TH2)Liquid levelUpper (TH4

–35–Discharge (TH11/TH12)Heat exchanger outlet (TH5)AccumulatorInletOutletSuction (Comp)Low pressure saturationtemperature (TH2)Liquid levelUpper (TH4

–36–21.0/- 21.0/-7.0/6.0 7.0/6.055555555 5522.4 28.726.0/24.7/23.8 32.2/30.6/29.50012218.0/3.6 18.0/3.2(1.77/0.35) (1.77/0.31)85/90 85/9079– 4 – 5– 4

–1–11111 PRECAUTIONS FOR DEVICES THAT USE R407C REFRIGERANTCautionDo not use the existing refrigerant piping.• The old refrigerant and refrigerator oi

–37–VariablecapacityunitConstantcapacityunitIndoor unitOutdoor unitItemsAmbient temp.Indoor unitPipingConditionIndoorOutdoorQuantityQuantity in operat

–38–VariablecapacityunitConstantcapacityunitIndoor unitOutdoor unitItemsAmbient temp.Indoor unitPipingConditionIndoorOutdoorQuantityQuantity in operat

–39–Function According to Switch Operation Switch Set TimingWhen Off When On When Off When OnSWU 1 ~ 2SW11 ~ 8Refer to LED monitor display on the outd

–40–2 Constant Capacity UnitFunction According to Switch Operation Switch Set TimingWhen Off When On When Off When OnSWU 1 ~ 2SW212345678910SW31234567

–41–-Centralized control notconnected.Storing of refrigerationsystem connectioninformation.Store IC•OC error history.Ordinary control--Ordinary contro

–42–2 Constant Capacity UnitFunction According to Switch Operation Switch Set TimingWhen Off When On When Off When OnSWU 1 ~ 2SW212345678910SW31234567

–43–(2) Indoor unitDIP SW1, 3Note 1: The shaded part indicates the setting at factory shipment. (For the SW not being shaded, refer to th

–44–Ceiling height3 3.5 m2 2.8 m1 2.3 mSetting of DIP SW4 Setting of DIP SW51234ON OFF ON OFF––––ON OFF ON OFFOFF OFF OFF ONON OFF OFF ONOFF ON OFF O

–45–33333 TEST RUN[1] Before Test Run(1) Check points before test run1 Neither refrigerant leak nor loose power source/ transmission lines should be f

–46–(3) Check points for test run when mounting options(4) Attention for mounting drain water lifting-up mechanismBuilt-in optional parts Content of t

–2–[1] Storage of Piping Material(1) Storage locationStore the pipes to be used indoors. (Warehouse at site or owner’s warehouse)Storing them outdoors

–47–

–48–(5) Check points for system structureIn the case of the PUHY-(P) 400·500 YMF-BCheck points from installation work to test run.Classification Porti

–49–Classification Portion Check item TroubleTransmissionlineSystem setBefore startingLimitation of transmission line length followed? Forexample, 200

–50–PowersourceforoutdoorunitSwitchSwitchMAIN boardOutdoor unit21161234516215782In the case of the PUHY-(P) 600·650·700·750 YSMF-BCheck points from in

–51–Classification Portion Check item TroubleTransmissionlineSystem setBefore startingLimitation of transmission line length followed? Forexample, 200

–52–[2] Test Run MethodNote) 1. If check code is displayed on remote controller or remote controller does not operate normally.2. Test run automatical

–53–44444 GROUPING REGISTRATION OF INDOOR UNITS WITH REMOTE CONTROLLER(1) Switch function• The switch operation to register with the remote controller

–54–(2) Attribute display of unit• At the group registration and the confirmation/deletion of registration/connection information, the type (attribute

–55–(3) Group registration of indoor unit1) Registration method• Group registration of indoor unit ... 1The indoor unit to be contro

–56–2) Method of retrieval/confirmation• Retrieval/confirmation of group registration information on indoor unit... 2The address of the i

–3–[2] Piping MachiningUse ester oil, ether oil or alkylbenzene (small amount) as the refrigerator oil to coat flares and flange connections.Use only

–57–3) Method of deletion• Deletion of group registration information of indoor unit ... 4[Operation procedure]1 With the remote control

–58–4) Deletion of information on address not existing• Deletion of information on address not existing ... 5This operation is to be con

–59–55555 CONTROL[1] Control of Outdoor Unit[1]- 1 PUHY-P400·500 YMF-B(1) Initial processing• When turning on power source, initial processing of micr

–60–• The operating temperature is 124°C (No. 1 compressor) or 115°C (No. 2 compressor).4) Compressor frequency control1 Ordinary controlThe ordinary

–61–ItemAt compressor is startedCompressor stopped during cool-ing or heating modeAfter operation has been stoppedDuring defrosting ((*1) in Fig below

–62–(5) Oil return control (Electronic expansion valve (SLEV))• The amount of opening of the oil-return LEV (SLEV) is determined as follows: in coolin

–63–5) Change in number of operating indoor units while defrosting• If the number of indoor units changes while the outdoor unit is defrosting, the de

–64–(10) Refrigerant recovery controlRefrigerant recovery is conducted to prevent refrigerant from accumulating in the stopped unit (fan unit), the un

–65–(12) Control at initial starting• When the ambient temperature is low (5°C or less in cooling and – 5°C or less in heating), initial starting will

–66–<Initial start control timing chart>Note 1: If the frequency of No. 1 compressor is above the specified level at the end of Step 2, the mode

–4–[3] Necessary Apparatus and Materials and Notes on Their HandlingThe following tools should be marked as dedicated tools for R407C.<<Comparis

–67–(13) Operation Mode1) Operating modes of the indoor unitThe following five modes can be set by the remote control.1 Cooling mode2 Heating mode3 Dr

–68–[1]-2 PUHY-400·500 YMF-B(1) Initial processing• When turning on power source, initial processing of microcomputer is given top priority.• During i

–69–• The operating temperature is 124°C.4) Compressor frequency control1 Ordinary controlThe ordinary control is performed after the following times

–70–ItemAt compressor is startedCompressor stopped during cool-ing or heating modeAfter operation has been stoppedDuring defrosting ((*1) in Fig below

–71–(5) Oil return control (Electronic expansion valve (SLEV))• The amount of opening of the oil-return LEV (SLEV) is determined as follows: in coolin

–72–5) Change in number of operating indoor units while defrosting• If the number of indoor units changes while the outdoor unit is defrosting, the de

–73–(10) Refrigerant recovery controlRefrigerant recovery is conducted to prevent refrigerant from accumulating in the stopped unit (fan unit), the un

–74–(12) Control at initial starting• When the ambient temperature is low (5°C or less in cooling and – 5°C or less in heating), initial starting will

–75–<Initial start control timing chart>Note 1: If the frequency of No. 1 compressor is above the specified level at the end of Step 2, the mode

–76–(13) Operation Mode1) Operating modes of the indoor unitThe following five modes can be set by the remote control.1 Cooling mode2 Heating mode3 Dr

–5–[4] BrazingNo changes from the conventional method, but special care is required so that foreign matter (ie. oxide scale, water, dirt,etc.) does no

–77–[1]- 3 PUHY-P600·650·700·750 YSMF-B(1) Initial processing• When turning on power source, initial processing of microcomputer is given top priority

–78–2 Switching No. 3 compressor from operation to stoppingWhen the required performance is exceeded with the No. 1 and No. 2 variable capacity unit c

–79–(4) Bypass - capacity controlThe solenoid valves have bypass valves (SV1, SV4 and SV6) that allow bypassing of the high pressure and lowpressure s

–80–130°C(No. 1 compressor)115°C(No. 2 compressor)• Td >SV1ON OFFON for 4 minutesONON for 3 minutesONON during oil recovery operation aftercontinuo

–81–ItemAt compressor is startedAfter thermostat reset or 3minutes after startupCompressor stopped duringcooling or heating modeAfter operation has be

–82–(5) Oil return control (Electronic expansion valve (SLEV); Variable Capacity Unit only)• The amount of opening of the oil-return LEV (SLEV) is det

–83–5) Change in number of operating indoor units while defrosting• If the number of indoor units changes while the outdoor unit is defrosting, the de

–84–(10) Liquid Distribution Control (electronic expansion valve (LEV2) constant capacity unit only)• Liquid distribution control refers to the proces

–85–(11) Liquid Refrigerant Correction ControlThe liquid refrigerant correction control adjusts the liquid refrigerant amounts between both accumulato

–86–(12) Refrigerant recovery controlRefrigerant recovery is conducted to prevent refrigerant from accumulating in the stopped unit (fan unit), the un

–6–[5] Airtightness TestNo changes from the conventional method. Note that a refrigerant leakage detector for R22 cannot detect R407Cleakage.Halide to

–87–(14) Control at initial starting• When the ambient temperature is low (5°C or less in cooling and – 5°C or less in heating), initial starting will

–88–<Initial Start Control Timingchart>For steps 1 - 3Note 1: If the frequency of No. 1 compressor is above the specified level at the end of St

–89–For steps 4 - 6OperationFrequency Level (Hz)–217 (For variable capacityunit model 500)183 (For variable capacityunit model 400)100100Less than 100

–90–Note 1: If Step 4 is interrupted (compressor stopped by thermostat OFF or regular stop), Step 4 will be redone atrestart.Note 2: If Step 5 is inte

–91–(17) Emergency response operating modeThe emergency operation mode is a mode in which the unit is run in an emergency to respond to the trouble wh

–92–2) Terminating Emergency Response Operation Mode(Termination Conditions)When one of the following conditions is met, emergency operation mode is t

–93–[1]-4 PUHY-600·650·700·750 YSMF-B(1) Initial processing• When turning on power source, initial processing of microcomputer is given top priority.•

–94–2 Switching No. 3 compressor from operation to stoppingWhen the required performance is exceeded with the No. 1 and No. 2 variable capacity unit c

–95–(4) Bypass - capacity controlThe solenoid valves have bypass valves (SV1, SV4 and SV6) that allow bypassing of the high pressure and lowpressure s

–96–ItemAt compressor is startedCompressor stopped during cool-ing or heating modeAfter operation has been stoppedDuring defrosting ((*1) in Fig below