Friedrich C24YJ User Manual

Single Zone Air ConditionerSVC MANUAL(General)CAUTIONBefore Servicing the unit, read the safety precautions in General SVC manual.Only for authorized

- 10 -Only for training and service purposesPart 2 Functions & Controls1. List of Functions & Accessory ...

- 11 -Only for training and service purposes1. List of Functions & Accessory1. Ceiling Concealed Duct IndoorCategory Functions RemarkAir flowAir s

- 12 -Only for training and service purposesAir supply outlet 4Airflow direction control(left & right) -Airflow direction control(up & down) A

- 13 -Only for training and service purposes3. OutdoorCategory FunctionsMR24UY3J MR36UY3JReliabilityDefrost / Deicing O OHigh pressure switch X XLow p

- 14 -Only for training and service purposes2. Air flow2.1 Auto swing (left & right)RightLeft110° ~ 120°OpenClose110° ~ 120°Mode2Mode3Mode4Mode5Mo

- 15 -Only for training and service purposesNOTE: Some Models are different by swing width and swing pattern.2.4 Air flow step• Indoor fan motor contr

- 16 -Only for training and service purposes3.Reserved (Blank)

- 17 -Only for training and service purposes4.1 E.S.P. (External Static Pressure) Setting (DUCT)4. Installation FunctionsThis is the function that dec

- 18 -Only for training and service purposesE.S.P. setting value (reference)[ Notes ] 1. To get the desired Airflow & E.S.P. combination from the

- 19 -Only for training and service purposes4.2 E.S.P. (External Static Pressure) Setting (Cassette)Function Code PressurePress button for 4 sec

- 2 -Only for training and service purposesAir Conditioner Service ManualTABLE OF CONTENTSPart 1 General Information ...

- 20 -Only for training and service purposesIf entering into ESP setup mode by using button, it indicates as the picture below.2Select ESP f

- 21 -Only for training and service purposes5.1 Hot start• When heating is started, the indoor fan is stopped or very slow to prevent the cold air car

- 22 -Only for training and service purposes6.1 Cooling & heating Operations6.1.1 Cooling Mode• Operating frequency of compressor depends on the

- 23 -Only for training and service purposes6.4 Auto restart Operation• Whenever there is electricity failure to the unit, and after resumption of the

- 24 -Only for training and service purposes6.5 Child Lock FunctionIt is the function to use preventing children or others from careless using.TEMPFAN

- 25 -Only for training and service purposes6.6 Forced operation• To operate the appliance by force in case when the remote control is lost, the force

- 26 -Only for training and service purposes6.7 Group Control1. When installing more than 2 units of air conditioner toone wired remote controller, pl

- 27 -Only for training and service purposes6.8 Sleep Timer Operation• When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is inpu

- 28 -Only for training and service purposes6.10 Weekly ProgramPlease move to 'weekly' by repeatedly pressing reservation button. 'Week

- 29 -Only for training and service purposesPlease move to 'AM/PM' setup part of turning off by using button.- AM/PM setup is identical

- 3 -Only for training and service purposes1. Safety Precautions ...

- 30 -Only for training and service purposes6.11 Two Thermistor ControlTEMPFANSPEEDOPERMODEWhen pressing the button and button simultaneou

- 31 -Only for training and service purposesFunction Code Thermistor settingSet Thermistor value by pressing button. (01: Remote Controller, 02: Indoo

- 32 -Only for training and service purposes7.1 Low Ambient control• This Function is for cooling operating in outdoor low temperature .• If outdoor

- 33 -Only for training and service purposes

- 34 -Only for training and service purposes

- 35 -Only for training and service purposesPart 3 Basic Control1. Normal operation...

- 36 -Only for training and service purposesBasic principle is to control the rpm of the motor by changing the working frequency of the compressor.Thr

- 37 -Only for training and service purposesPart 4 Trouble Shooting 1. Self-diagnosis Function...

- 38 -Only for training and service purposes1. Self-diagnosis FunctionEx) Error 03 (Remote controller error)1.1 Error Indicator (Indoor)3 Times 3 Time

- 39 -Only for training and service purposes1.2 Error Indicator (Outdoor)If abnormal voltage is supplied, the protection circuits will turn off the pr

- 4 -Only for training and service purposes1. Safety Precautions 1.1 Cautions in Repair To prevent injury to the user or other people and property dam

- 40 -Only for training and service purposes2. Pump DownSetting Procedure1) Set the Dip Switch as follow after shutting the power source down.2) Reset

- 41 -Only for training and service purposes• Procedure(1) Connect the vacuum pump to the center hoseof charge set center hose (2) Evacuation for appr

- 42 -Only for training and service purposesLoChargingcylinder Outdoor unitIndoor unitLiquid sideGas sideOpen3-Wayvalve3-WayvalveOPENOpenCheck valve(1

- 43 -Only for training and service purposesTrouble analysis1. Check temperature difference between intake and discharge air, and check for the operat

- 44 -Only for training and service purposes6.1 The Product doesn’t operate at allThe operation check of the Indoor PCB AssemblyProcedure1) The input

- 45 -Only for training and service purposes6.2 The Product doesn't operate with the remote controllerTurn on the main powerYesNoA "Beeping

- 46 -Only for training and service purposesTurn on the main power.When in air circulation mode, compressor/outdoor fan is stopped.Turn off main power

- 47 -Only for training and service purposes6.4 When indoor Fan does not operate.Check the SSR high speed operation by remote control.(the Indoor Fan

- 48 -Only for training and service purposes• Confirm that the vertical louver is normally geared with the shaft of Stepping Motor.• If the regular to

- 49 -Only for training and service purposes6.6 Troubleshooting Indoor ErrorCheck Point1. Unplug the sensor on Indoor unit PCB.2. Estimate the resist

- 5 -Only for training and service purposesDo not turn on the breaker under condition that front panel and cabinet areremoved.Be sure to earth the air

- 50 -Only for training and service purposesCheck the Volt.Indoor UnitV12Vdc12V(RD)S(YL)S(YL)GND(BK)Check the Volt.Wired R/CV12Vdc12V(RD)GND(BK)Check

- 51 -Only for training and service purposesCheck the wire connection (Open, Soldered poorly)❊ Drain pump check Check drain tube installationIs it nor

- 52 -Only for training and service purposesChange Option PCBCheck the the connection port.Is it normal ?YesNo Correct connectionCheck Flow Chart (CH0

- 53 -Only for training and service purposes10Indoor BLDC Fan MotorLockThe Fan is not operatedproperlyCheck the Indoor fan lockingDisplaycodeTitle Cau

- 54 -Only for training and service purposesIs the connection of GND,GND1,GND2, correctly connected?Change PCB❊ CH05 is displayed at indoor unit,

- 55 -Only for training and service purposes6.7 Troubleshooting Outdoor Error21DC PEAK(IPM Fault)• Instant over current• Over Rated current• Poor insu

- 56 -Only for training and service purposesn AUUW24GD2 [MR24UY3J]Y^ Y] Y\ Y[ YZ YY YXw ~ } | u u uzwtZLED02MLED01MUVW1. Wait until inverter PCB DC

- 57 -Only for training and service purposesn AUUW36GD2 [MR36UY3J]AC(N)-BLUEAC(L)-BROWNUVWU,V,W CONNECTOR1. Wait until inverter PCB DC voltage is disc

- 58 -Only for training and service purposes22Max. C/T• Input Over Current• Malfunction of compressor• Blocking of pipe• Low voltage input• Refrigeran

- 59 -Only for training and service purposesCheck Point1. Check the power source.(230V ±15%)2. Check the fan operation is right.3. Check the current.4

- 6 -Only for training and service purposes1.2 Inspections after RepairCheck to see if the parts are mounted correctly and wires are connected.Imprope

- 60 -Only for training and service purposes23DC Link High / Low Volt• DC Link Voltage isabove 420Vdc• DC Link Voltage isbelow 140Vdc• Check CN_(L), C

- 61 -Only for training and service purposesCheck Point1. Check the WCN_P(L),P(N) Connection condition at the Main PCB.(Refer to outdoor wiring diagra

- 62 -Only for training and service purposesVdc AUUW36GD2 [MR36UY3J]PGND

- 63 -Only for training and service purposesCheck Point1. Check the Input Voltage (L1- L2 ‘ 230V±10%)2. Check Input Voltage Sensor output voltage (2.5

- 64 -Only for training and service purposes< Inverter PCB> < Input Voltage Sensing Check Point > AUUW24GD2 [MR24UY3J]AUUW36GD2 [MR36UY3J

- 65 -Only for training and service purposes26DC CompressorPosition• Compressor Starting fail error• Check the connection of comp wire “U,V,W”• Malfu

- 66 -Only for training and service purposes AUUW36GD2 [MR36UY3J]UWVGND

- 67 -Only for training and service purposes27AC Input Instant overCurrent Error Inverter PCB input current is over100A(peak)for 2us1. Overload operat

- 68 -Only for training and service purposes<Short Check Point> <Short Check Point> * AUUW24GD2 [MR24UY3J]* AUUW36GD2 [MR36UY3J]

- 69 -Only for training and service purposes29Inverter compressor overcurrentInverter compressor inputcurrent is over 30A1. Overload operation (Pipe c

- 7 -Only for training and service purposesCategoryChassisNameCapacity Index[kBtu/h]24 36CeilingConcealedDuctHighStaticPressureBGBRCeilingCassette4way

- 70 -Only for training and service purposesDisplaycodeTitle Cause of error Check point & Normal condition32High temperature inDischarge pipe of t

- 71 -Only for training and service purposesDisplaycodeTitle Cause of error Check point & Normal condition35 Low Presser ErrorExcessive decrease o

- 72 -Only for training and service purposes39Transmission ErrorBetween (PFC Micom ’INV Micom)Communication ErrorBetween PFC Micomand INV Micom.1. Mic

- 73 -Only for training and service purposesCheck Point1. Check the Input Voltage (L1- L2 ‘ 230V±10%)2. Check Input Voltage Sensor output voltage (2.5

- 74 -Only for training and service purposes AUUW36GD2 [MR36UY3J] AUUW24GD2 [MR24UY3J]IN/IGND<CT Sensing Check Point> BlackRedVdc123Vdc<CT Se

- 75 -Only for training and service purposesDisplaycodeTitle Cause of error Check point & Normal condition41 D-pipe sensor (Inverter)• Open / Shor

- 76 -Only for training and service purposesDisplaycodeTitle Cause of error Check point & Normal condition43Sensor error of highpressureAbnormal v

- 77 -Only for training and service purposes53TitleCommunication(Indoor ’ Outdoor)• Communication poorly• Power input AC 230V. (Outdoor, Indoor)• The

- 78 -Only for training and service purposes60Inverter PCB & Main EEPROM check sum errorEEPROM Access errorand Check SUM error1. EEPROM contact de

- 79 -Only for training and service purposes* AUUW36GD2 [MR36UY3J]EEPROM

- 8 -Only for training and service purposes3.Blank

- 80 -Only for training and service purposesDisplaycodeTitle Cause of error Check point & Normal condition61High temperature in out-door Cond. Pip

- 81 -Only for training and service purposes62Heatsink High errorInverter PCB heatsinktemperature is over 85°C1. ODU fan locking2. Heatsink assembly o

- 82 -Only for training and service purposes* AUUW24GD2 [MR24UY3J]* AUUW36GD2 [MR36UY3J]ΩPFCM: Measuring resistance between No.19,20 pin

- 83 -Only for training and service purposes65Heatsink Sensor errorInverter PCB heatsinksensor is open or short1. ODU fan locking2. Heatsink assembly

- 84 -Only for training and service purposes* AUUW24GD2 [MR24UY3J]* AUUW36GD2 [MR36UY3J]ΩPFCM: Measuring resistance between No.19,20 pin

- 85 -Only for training and service purposes67Fan Lock ErrorFan RPM is 10RPM orless for 5 sec. when ODUfan starts or 40 RPM orless after fan starting.

- 86 -Only for training and service purposes<Main PCB> AUUW36GD2 [MR36UY3J]AUUW24GD2 [MR24UY3J]TesterFan motorconnectorCheck voltage betwen1pin

- 87 -Only for training and service purposes73AC input instant over cur-rent error (Matter of software)Inverter PCB input powercurrent is over 48A(pea

- 88 -Only for training and service purposes< Input Power Source Check Point > < Main PCB wiring Check Point > NN LN L < Noise Filter

- 89 -Only for training and service purposesLNNLLLNNNLNLLN< Input Power Source Check Point > AUUW36GD2 [MR36UY3J]LNNLLLNNNLNLLN< Input Power

- 9 -Only for training and service purposes2.3 NomenclatureM RH 36 D Y 3 J M Installation Type M : Multi ZoneMarketing Model Electrical rating 1

P/No : MFL62542027