SkyAir P-Series Heat Pump FAQ_PVJU ; FCQ_PVJU ; FHQ_PVJU ; RZQ_PVJU – Service-Manual

This Service Manual is for SkyAir Inverter P Series R-410A Heat Pump 60Hz

Ceiling Mounted Cassette Type (Multi Flow) Indoor Units: FCQ18PVJU ; FCQ24PVJU ; FCQ30PVJU
Ceiling Mounted Cassette Type (Multi Flow) Outdoor Unit: RZQ18PVJU ; RZQ24PVJU ; RZQ30PVJU

Ceiling Suspended Type Indoor Unit: FHQ18PVJU ; FHQ24PVJU ; FHQ30PVJU
Ceiling suspended type Outdoor Unit: RZQ18PVJU ; RZQ24PVJU ; RZQ30PVJU
Wall mounted type Indoor Unit: FAQ18PVJU ; FAQ24PVJU
Wall mounted type Outdoor UnitRZQ18PVJU ; RZQ24PVJU

 

CONTENTS:

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

  • 1. Model Names and Power Supply … page 2
  • 2. External Appearance … page 3
  • 2.1 Indoor Units … page 3
  • 2.2 Outdoor Units … page 3
  • Specifications … page 4

  • 1. Specifications … page 5
  • 1.1 FCQ … page 5
  • 1.2 FHQ … page 6
  • 1.3 FAQ … page 7
  • List of Electrical and Functional Parts … page 8

  • 1. List of Electrical and Functional Parts … page 9
  • 1.1 Outdoor Units … page 9
  • 1.2 Indoor Units … page 10
  • Refrigerant Circuit … page 11

  • 1. Refrigerant Circuit … page 12
  • 1.1 RZQ18·24·30PVJU … page 12
  • 2. Functional Parts Layout … page 14
  • 2.1 RZQ18·30PVJU … page 14
  • Function … page 15

  • 1. Operation Mode … page 16
  • 2. Basic Control … page 17
  • 2.1 Normal Operation … page 17
  • 2.2 Compressor PI Control … page 18
  • 2.3 Electronic Expansion Valve PI
    Control … page 19
  • 2.4 Cooling Operation Fan Control … page 20
  • 3. Special Control … page 21
  • 3.1 Startup Control … page 21
  • 3.2 Oil Return Operation … page 22
  • 3.3 Defrosting Operation … page 24
  • 3.4 Pump-down Residual Operation … page 25
  • 3.5 Restart Standby … page 26
  • 3.6 Stopping Operation … page 27
  • 3.7 Pressure Equalization Prior to
    Startup … page 28
  • 4. Protection Control … page 29
  • 4.1 High Pressure Protection Control … page 29
  • 4.2 Low Pressure Protection Control … page 30
  • 4.3 Discharge Pipe Protection Control … page 31
  • 4.4 Inverter Protection Control … page 32
  • 5. Other Control … page 33
  • 5.1 Heating Operation Prohibition … page 33
  • 6. Outline of Control (Indoor Unit) … page 34
  • 6.1 Drain Pump Control … page 34
  • 6.2 Louver Control for Preventing
    Ceiling Dirt … page 36
  • 6.3 Operation Range of Remote Controller
    Temperature Sensor … page 37
  • 6.4 Freeze Prevention … page 39
  • 6.5 View of Operations of Swing Flaps … page 40
  • Test Operation … page 41

  • 1. Test Operation … page 42
  • 1.1 Procedure and Outline … page 42
  • 1.2 Operation when Power is Turned On … page 45
  • 2. Outdoor Unit P.C.B. Layout … page 46
  • 3. Field Setting … page 47
  • 3.1 Field Setting from Remote Controller … page 47
  • 3.2 Field Setting from Outdoor Unit … page 55
  • 3.3 Detail of Setting Mode … page 60
  • Troubleshooting … page 65

  • 1. Symptom-based Troubleshooting … page 67
  • 2. Troubleshooting by Remote Controller … page 70
  • 2.1 The INSPECTION / TEST Button … page 70
  • 2.2 Self-diagnosis by Wired Remote
    Controller … page 71
  • 2.3Self-diagnosis by Wireless Remote
    Controller … page 72
  • 2.4 Operation of the Remote Controller’s
    Inspection / Test Operation Button … page 75
  • 2.5 Remote Controller Service Mode … page 76
  • 2.6 Remote Controller Self-Diagnosis
    Function … page 78
  • 3. Troubleshooting by Indication on the
    Remote Controller … page 85
  • 3.1 “A0” Indoor Unit: Error of External
    Protection Device … page 85
  • 3.2 “A1” Indoor Unit: P.C.B. Defect … page 86
  • 3.3 “A3” Indoor Unit: Malfunction of
    rain Level Control System (S1L) … page 87
  • 3.4 “A6” Indoor Unit: Fan Motor (M1F) Lock,
    Overload … page 89
  • 3.5 “A7” Indoor Unit: Malfunction of Swing
    Flap Motor (M1S) … page 90
  • 3.6 “A9” Indoor Unit: Malfunction of Moving
    Part of Electronic Expansion Valve (Y1E) … page 92
  • 3.7 “AF” Indoor Unit: Drain Level
    above Limit … page 94
  • 3.8 “AJ” Indoor Unit: Malfunction of Capacity
    Determination Device … page 95
  • 3.9 “C4” Indoor Unit: Malfunction of Thermistor
    (R2T) for Heat Exchanger … page 96
  • 3.10 “C5” Indoor Unit: Malfunction of Thermistor
    (R3T) for Gas Pipes … page 97
  • 3.11 “C9” Indoor Unit: Malfunction
    of Thermistor (R1T) for Suction Air … page 98
  • 3.12 “CA” Indoor Unit: Malfunction of Thermistor
    for Discharge Air … page 99
  • 3.13 “CJ” Indoor Unit: Malfunction of
    Thermostat Sensor in Remote Controller … page 100
  • 3.14 “E1” Outdoor Unit: P.C.B. Defec … page 101
  • 3.15 “E3” Outdoor Unit: Actuation of High
    Pressure Switch … page 102
  • 3.16 “E4” Outdoor Unit: Actuation of Low
    Pressure Sensor … page 104
  • 3.17 “E5” Inverter Compressor Motor Lock … page 106
  • 3.18 “E7” Malfunction of Outdoor Unit Fan Motor … page 108
  • 3.19 “E9” Outdoor Unit: Malfunction of Moving Part of
    Electronic Expansion Valve (Y1E) … page 109
  • 3.20 “F3” Outdoor Unit: Abnormal Discharge
    Pipe Temperature … page 111
  • 3.21 “F6” Outdoor Unit: Refrigerant Overcharged … page 112
  • 3.22 “H9” Outdoor Unit: Malfunction of Thermistor
    (R1T) for Outdoor Air … page 113
  • 3.23 “J3” Outdoor Unit: Malfunction of Discharge
    Pipe Thermistor (R2T) … page 114
  • 3.24 “J5” Outdoor Unit: Malfunction of Thermistor
    (R3T, R5T) for Suction Pipe 1, 2 … page 115
  • 3.25 “J6” Outdoor Unit: Malfunction of Thermistor
    (R4T) for Outdoor Unit Heat Exchanger … page 116
  • 3.26 “JA” Outdoor Unit: Malfunction of High
    Pressure Sensor … page 117
  • 3.27 “JC” Outdoor Unit: Malfunction of Low
    Pressure Sensor … page 119
  • 3.28 “L1” Outdoor Unit: Malfunction of P.C.B. … page 121
  • 3.29 “L4” Outdoor Unit: Malfunction of
    Inverter Radiating Fin Temperature Rise … page 122
  • 3.30 “L5” Outdoor Unit: Inverter Compressor
    Abnormal … page 123
  • 3.31 “L8” Outdoor Unit: Inverter Current
    Abnormal … page 124
  • 3.32 “L9” Outdoor Unit: Inverter Start up
    Error … page 126
  • 3.33 “LC” Outdoor Unit: Malfunction of Transmission
    between Inverter and Control P.C.B … page 127
  • 3.34 “P4” Outdoor Unit: Malfunction of
    Inverter Radiating Fin Temperature Rise Sensor … page 128
  • 3.35 “U0” Outdoor Unit: Low Pressure Drop Due to
    Refrigerant Shortage or Electronic Expansion Valve
    Failure … page 129
  • 3.36 “U2” Power Supply Insufficient or
    Instantaneous Failure … page 131
  • 3.37 “U3” Check Operation not Executedv … page 133
  • 3.38 “U4” Malfunction of Transmission between
    Indoor Units and Outdoor Units … page 134
  • 3.39 “U5” Malfunction of Transmission between
    Remote Controller and Indoor Unit … page 136
  • 3.40 “U8” Malfunction of Transmission between
    Main and Sub Remote Controllers … page 137
  • 3.41 “UE” Malfunction of Transmission between
    Centralized Remote Controller and Indoor Unit … page 138
  • 3.42 “UF” System is not Set yet … page 140
  • 3.43 “UH” Malfunction of System,
    Refrigerant System Address Undefined … page 141
  • 4. Troubleshooting by Indication on
    the Centralized Remote Controller … page 143
  • 4.1 “UE” Malfunction of Transmission between
    Centralized Remote Controller and Indoor Unit … page 143
  • 4.2 “M1” P.C.B. Defect … page 145
  • 4.3 “M8” Malfunction of Transmission between
    Optional Controllers for Centralized Control … page 146
  • 4.4 “MA” Improper Combination of Optional
    Controllers for Centralized Control … page 147
  • 4.5 “MC” Address Duplication, Improper
    Setting … page 149
  • 5. Troubleshooting by Indication on the Unified
    ON/OFF Controller … page 150
  • 5.1 Operation Lamp Blinks … page 150
  • 5.2 Display “Under Host Computer Integrate Control”
    Blinks (Repeats Single Blink) … page 152
  • 5.3 Display “Under Host Computer Integrate Control”
    Blinks (Repeats Double Blink) … page 155
  • Appendix … page 159

  • 1. Piping Diagrams … page 160
  • 1.1 Outdoor Unit … page 160
  • 1.2 Indoor Unit … page 161
  • 2. Wiring Diagrams for Reference … page 162
  • 2.1 Outdoor Unit … page 162
  • 2.2 Indoor Unit … page 163
  • 3. Thermistor Resistance / Temperature
    Characteristics … page 166
  • 4. Pressure Senso … page 168
  • Precautions for New Refrigerant (R-410A) … page 169

  • 1. Precautions for New Refrigerant (R-410A) … page 170
  • 1.1 Outline … page 170
  • 1.2 Service Tools … page 172