SkyAir RZR_PVJU ; RZQ_PVJU(9) ; FAQ_PVJU ; FBQ_PVJU ; FCQ_PAVJU ; FHQ_MVJU ; FHQ_PVJU – Service Manual

This Service Manual is for RZR-P, RZQ-P(9) Series
Cooling Only / Heat Pump R-410A 60Hz

 

Cooling Only Indoor Units :

Ceiling mounted cassette type (Round flow): FCQ18PAVJU ; FCQ24PAVJU ; FCQ30PAVJU ; FCQ36PAVJU ; FCQ42PAVJU
Ceiling suspended type: FHQ18PVJU ; FHQ24PVJU ; FHQ30PVJU ; FHQ36MVJU ; FHQ42MVJU
Wall mounted type: FAQ18PVJU ; FAQ24PVJU
Ceiling mounted duct type: FBQ18PVJU ; FBQ24PVJU ; FBQ30PVJU ; FBQ36PVJU ; FBQ42PVJU

Cooling Only Outdoor Units :

Ceiling mounted cassette type (Round flow): RZR18PVJU ; RZR24PVJU ; RZR30PVJU ; RZR36PVJU ; RZR42PVJU
Ceiling suspended type: RZR18PVJU ; RZR24PVJU ; RZR30PVJU ; RZR36PVJU ; RZR42PVJU
Wall mounted type: RZR18PVJU ; RZR24PVJU
Ceiling mounted duct type: RZR18PVJU ; RZR24PVJU ; RZR30PVJU ; RZR36PVJU ; RZR42PVJU

 

Heat Pump Indoor Units :

Ceiling mounted cassette type (Round flow): FCQ18PAVJU ; FCQ24PAVJU ; FCQ30PAVJU ; FCQ36PAVJU ; FCQ42PAVJU
Ceiling suspended type: FHQ18PVJU ; FHQ24PVJU ; FHQ30PVJU ; FHQ36MVJU ; FHQ42MVJU
Wall mounted type: FAQ18PVJU ; FAQ24PVJU
Ceiling mounted duct type: FBQ18PVJU ; FBQ24PVJU ; FBQ30PVJU ; FBQ36PVJU ; FBQ42PVJU
Air handling unit: FTQ18PAVJU ; FTQ24PAVJU

Heat Pump Outdoor Units :

Ceiling mounted cassette type (Round flow): RZQ18PVJU9 ; RZQ24PVJU9 ; RZQ30PVJU ; RZQ36PVJU9 ; RZQ42PVJU9
Ceiling suspended type: RZQ18PVJU9 ; RZQ24PVJU9 ; RZQ30PVJU ; RZQ36PVJU9 ; RZQ42PVJU9
Wall mounted type: RZQ18PVJU9 ; RZQ24PVJU9
Ceiling mounted duct type: RZQ18PVJU9 ; RZQ24PVJU9 ; RZQ30PVJU ; RZQ36PVJU9 ; RZQ42PVJU9
Air handling unit: RZQ18PVJU ; RZQ24PVJU

 

CONTENTS:

  • 1. Safety Considerations …v
  • 1.1 Safety Considerations for Repair …v
  • 1.2 Safety Considerations for Users …vi
  • General Information …page 1

  • 1. Model Names and Power Supply …page 2
  • 1.1 Cooling Only …page 2
  • 1.2 Heat Pump …page 2
  • 2. External Appearance …page 3
  • 2.1 Indoor Units …page 3
  • 2.2 Remote Controller …page 4
  • 2.3 Outdoor Units …page 4
  • Refrigerant Circuit …page 5

  • 1. Refrigerant Circuit …page 6
  • 1.1 RZR18 / 24 / 30PVJU
    RZQ18 / 24PVJU9
    RZQ30PVJU …page 6
  • 1.2 RZR36 / 42PVJU
    RZQ36 / 42PVJU(9) …page 8
  • 2. Functional Parts Layout …page 10
  • 2.1 RZR18 / 24 / 30PVJU
    RZQ18 / 24PVJU9
    RZQ30PVJU …page 10
  • Remote Controller …page 11

  • 1. Wired Remote Controller …page 12
  • 1.1 Applicable Models …page 12
  • 1.2 Names and Functions …page 13
  • 1.3 MAIN/SUB Setting when Using 2 Remote
    Controllers …page 17
  • 1.4 Centralized Control Group No. Setting …page 19
  • 2. Wireless Remote Controller …page 22
  • 2.1 Applicable Models …page 22
  • 2.2 Names and Functions …page 22
  • 2.3 Address and MAIN/SUB Setting …page 24
  • 3. Service Mode …page 25
  • 3.1 BRC1D71 …page 25
  • 3.2 BRC1E71 …page 28
  • 4. Inspection Mode …page 30
  • Function and Control …page 31

  • 1. Function General …page 32
  • 1.1 Operation Mode …page 32
  • 2. Basic Control …page 33
  • 2.1 Normal Operation …page 33
  • 2.2 Compressor PI Control …page 34
  • 2.3 Electronic Expansion Valve PI Control …page 35
  • 2.4 Cooling Operation Fan Control …page 36
  • 3. Special Control …page 37
  • 3.1 Startup Control …page 37
  • 3.2 Oil Return Operation …page 38
  • 3.3 Defrosting Operation …page 40
  • 3.4 Pump Down Residual Operation …page 41
  • 3.5 Restart Standby …page 42
  • 3.6 Stopping Operation …page 42
  • 3.7 Pressure Equalization Prior to Startup …page 43
  • 4. Protection Control …page 44
  • 4.1 High Pressure Protection Control …page 44
  • 4.2 Low Pressure Protection Control …page 45
  • 4.3 Discharge Pipe Protection Control …page 46
  • 4.4 Inverter Protection Control …page 47
  • 5. Other Control …page 48
  • 5.1 Heating Operation Prohibition …page 48
  • 6. Outline of Control (Indoor Unit) …page 49
  • 6.1 Drain Pump Control …page 49
  • 6.2 Louver Control for Preventing
    Ceiling Dirt …page 51
  • 6.3 Room Temperature Thermistor in Remote
    Controller …page 52
  • 6.4 Thermostat Control with Operation Mode
    Set to “AUTO” …page 54
  • 6.5 Freeze-up Prevention …page 55
  • 6.6 View of Operations of Swing Flaps …page 56
  • 6.7 Hot Start Control (In Heating
    Operation Only) …page 57
  • 6.8 Heater Control (FTQ) …page 59
  • 6.9 4 Step Thermostat Processing (FTQ) …page 62
  • 6.10 Interlocked with External Equipment
    (FTQ) …page 63
  • Field Setting …page 65

  • 1. Test Operation …page 66
  • 1.1 Procedure and Outline …page 66
  • 1.2 Operation when Power is Turned ON …page 69
  • 2. Field Setting from Remote Controller …page 70
  • 2.1 Wired Remote Controller …page 70
  • 2.2 Wireless Remote Controller …page 73
  • 2.3 Setting Contents and Code No. for
    Indoor Units …page 74
  • 3. Field Setting from Outdoor Unit …page 80
  • 3.1 Location of DIP Switch and BS Button …page 80
  • 3.2 Setting by DIP Switches …page 81
  • 3.3 Setting by BS Buttons …page 81
  • 3.4 Setting Mode 1 …page 83
  • 3.5 Setting Mode 2 …page 84
  • 3.6 Monitor Mode …page 86
  • 3.7 Detailed Explanation of
    Setting Modes …page 87
  • Service Diagnosis …page 94

  • 1. Symptom-based Troubleshooting …page 96
  • 2. Troubleshooting by Remote Controller …page 99
  • 2.1 Mode Change Over …page 99
  • 2.2 Procedure of Self-diagnosis by Remote
    Controller …page 100
  • 2.3 Error Codes and Description …page 103
  • 2.4 Error Codes – Sub Codes …page 104
  • 2.5 Error Code Indication by
    Outdoor Unit PCB …page 107
  • 2.6 Error of External Protection Device …page 109
  • 2.7 Indoor Unit PCB Abnormality …page 110
  • 2.8 Drain Water Level System Abnormality …page 111
  • 2.9 Indoor Unit Fan Motor Abnormality …page 113
  • 2.10 Swing Flap Motor Abnormality / Lock …page 115
  • 2.11 Abnormal Power Supply Voltage …page 117
  • 2.12 Electronic Expansion Valve
    Coil Abnormality …page 118
  • 2.13 Drain System Abnormality …page 120
  • 2.14 Capacity Setting Abnormality …page 121
  • 2.15 Transmission Error between Indoor Unit
    PCB and Fan PCB …page 122
  • 2.16 Heat Exchanger (Liquid pipe) Thermistor
    Abnormality …page 124
  • 2.17 Heat Exchanger (Gas Pipe) Thermistor
    Abnormality …page 125
  • 2.18 Combination Error between Indoor Unit
    PCB and Fan PCB …page 126
  • 2.19 Suction Air Thermistor Abnormality …page 127
  • 2.20 Humidity Sensor System Abnormality …page 128
  • 2.21 Room Temperature Thermistor in Remote
    Controller Abnormality …page 129
  • 2.22 Outdoor Unit PCB Abnormality …page 130
  • 2.23 High Pressure Abnormality …page 131
  • 2.24 Actuation of Low Pressure Sensor …page 133
  • 2.25 Inverter Compressor Motor Lock …page 135
  • 2.26 Outdoor Unit Fan Motor Abnormality …page 137
  • 2.27 Electronic Expansion Valve Coil
    Abnormality …page 138
  • 2.28 Discharge Pipe Temperature
    Control Error …page 141
  • 2.29 Refrigerant Overcharged …page 143
  • 2.30 High Pressure Switch System
    Abnormality …page 144
  • 2.31 Outdoor Unit Fan Motor Signal
    Abnormality …page 145
  • 2.32 Thermistor System Abnormality …page 146
  • 2.33 High Pressure Sensor Abnormality …page 147
  • 2.34 Low Pressure Sensor Abnormality …page 149
  • 2.35 Outdoor Unit PCB Abnormality …page 151
  • 2.36 Radiation Fin Temperature Rise …page 153
  • 2.37 Momentary Overcurrent of Inverter
    Compressor …page 154
  • 2.38 Electronic Thermal (Time Lag) …page 155
  • 2.39 Inverter Startup Error …page 157
  • 2.40 Transmission Error (between Control
    and Inverter PCB) …page 159
  • 2.41 Radiation Fin Thermistor Abnormality …page 160
  • 2.42 Refrigerant Shortage …page 161
  • 2.43 Power Supply Voltage Abnormality …page 162
  • 2.44 Check Operation not Executed …page 164
  • 2.45 Transmission Error (between Indoor
    Units and Outdoor Units) …page 165
  • 2.46 Transmission Error (between Remote
    Controller and Indoor Unit) …page 168
  • 2.47 Transmission Error (between Main and Sub
    Remote Controllers) …page 169
  • 2.48 Transmission Error (between Centralized
    Remote Controller and Indoor Unit) …page 170
  • 2.49 System is not Set yet …page 172
  • 2.50 Check …page 173
  • Appendix …page 182

  • 1. Piping Diagrams …page 183
  • 1.1 Indoor Unit + Outdoor Unit …page 183
  • 1.2 Indoor Unit …page .185
  • 2. Wiring Diagrams …page 187
  • 2.1 Outdoor Unit …page 187
  • 2.2 Indoor Unit …page 189