SkyAir Inverter M Series R-410A Heat Pump 60Hz

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

Ceiling Mounted Cassette Type (Multi Flow) Indoor Units: FCQ24MVJU ; FCQ30MVJU ; FCQ36MVJU ; FCQ42MVJU
Ceiling Mounted Cassette Type (Multi Flow) Outdoor Units: RZQ24MVJU ; RZQ30MVJU ; RZQ36MVJU ; RZQ42MVJU
Ceiling Suspended Type Indoor Units: FHQ24MVJU ; FHQ30MVJU ; FHQ36MVJU ; FHQ42MVJU
Ceiling Suspended Type Outdoor Units: RZQ24MVJU ; RZQ30MVJU ; RZQ36MVJU ; RZQ42MVJU
 

CONTENTS:

    1. Introduction …V

  • 1.1 Safety Cautions …V
  • 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 5[/list_item]

  • 1. Specifications … page 6
  • 1.1 FCQ … page 6
  • 1.2 FHQ … page 8
  • List of Electrical and Functional
    Parts … page 11

  • 1. List of Electrical and Functional
    Parts … page 12
  • 1.1 Outdoor Units … page 12
  • 1.2 Indoor Unit … page 13
  • Refrigerant Circuit … page 15

  • 1. Refrigerant Circuit … page 16
  • 1.1 RZQ24·30·36·42MVJU … page 16
  • 2. Functional Parts Layout … page 18
  • 2.1 RZQ24·30·36·42MVJU … page 18
  • Function … page 19

  • 1. Operation Mode … page 20
  • 2. Basic Control … page 21
  • 2.1 Normal Operation … page 21
  • 2.2 Compressor PI Control … page 22
  • 2.3 Electronic Expansion Valve
    PI Control … page 23
  • 2.4 Cooling Operation Fan Control … page 24
  • 3. Special Control … page 25
  • 3.1 Startup Control … page 25
  • 3.2 Oil Return Operation … page 26
  • 3.3 Defrosting Operation … page 28
  • 3.4 Pump-down Residual Operation … page 29
  • 3.5 Restart Standby … page 30
  • 3.6 Stopping Operation … page 31
  • 3.7 Pressure Equalization Prior
    to Startup … page 32
  • 4. Protection Control … page 33
  • 4.1 High Pressure Protection Control … page 33
  • 4.2 Low Pressure Protection Control … page 34
  • 4.3 Discharge Pipe Protection Control … page 35
  • 4.4 Inverter Protection Control … page 36
  • 5. Other Control … page 37
  • 5.1 Heating Operation Prohibition … page 37
  • 6. Outline of Control (Indoor Unit) … page 38
  • 6.1 Drain Pump Control … page 38
  • 6.2 Louver Control for Preventing
    Ceiling Dirt … page 40
  • 6.3 Thermostat Sensor in Remote
    Controller … page 41
  • 6.4 Freeze Prevention … page 43
  • 6.5 View of Operations of Swing
    Flaps … page 44
  • Operation … page 45

  • 1. Test Operation … page 46
  • 1.1 Procedure and Outline … page 46
  • 1.2 Operation When Power is Turned
    On … page 49
  • 2. Outdoor Unit PC Board Layout … page 50
  • 3. Field Setting … page 51
  • 3.1 Field Setting from Remote
    Controller … page 51
  • 3.2 Field Setting from Outdoor
    Unit … page 62
  • 3.3 Detail of Setting Mode … page 68
  • Troubleshooting … page 79

  • 1. Troubleshooting by Remote
    Controller … page 82
  • 1.1 The INSPECTION / TEST Button … page 82
  • 1.2 Self-Diagnosis by Wired
    Remote Controller … page 83
  • 1.3 Self-Diagnosis by Wireless
    Remote Controller … page 84
  • 1.4 Operation of the Remote Controller’s
    Inspection / Test Operation Button … page 86
  • 1.5 Remote Controller Service
    Mode … page 87
  • 2. List of Malfunction Code … page 89
  • 3. Malfunction Code Indication by
    Outdoor Unit PCB … page 92
  • 4. Troubleshooting by Indication on the
    Remote Controller … page 94
  • 4.1 “A0” Indoor Unit: Error of
    External Protection Device … page 94
  • 4.2 “A1” Indoor Unit: PC Board
    Defect … page 95
  • 4.3 “A3” Indoor Unit: Malfunction of
    Drain Level Control System (S1L) … page 96
  • 4.4 “A6” Indoor Unit: Fan Motor (M1F)
    Lock, Overload … page 98
  • 4.5 “A7” Indoor Unit: Malfunction of
    Swing Flap Motor (MA) … page 99
  • 4.6 “A9” Indoor Unit: Malfunction of
    Moving Part of Electronic Expansion Valve
    (20E) … page 101
  • 4.7 “AF” Indoor Unit: Drain Level
    above Limit … page 103
  • 4.8 “AJ” Indoor Unit: Malfunction of
    Capacity Determination Device … page 104
  • 4.9 “C4” Indoor Unit: Malfunction of
    Thermistor (R2T) for Heat Exchanger … page 105
  • 4.10 “C5” Indoor Unit: Malfunction
    of Thermistor (R3T) for Gas Pipes … page 106
  • 4.11 “C9” Indoor Unit: Malfunction of
    Thermistor (R1T) for Suction Air … page 107
  • 4.12 “CJ” Indoor Unit: Malfunction
    of Thermostat Sensor in Remote
    Controller … page 108
  • 4.13 “E1” Outdoor Unit: PC Board
    Defect … page 109
  • 4.14 “E3” Outdoor Unit: Actuation of
    High Pressure Switch … page 110
  • 4.15 “E4” Outdoor Unit: Actuation of
    Low Pressure Switch … page 111
  • 4.16 “E5” Outdoor Unit: Compressor
    Motor Lock … page 113
  • 4.17 “E7” Outdoor Unit: Malfunction
    of Outdoor Unit Fan Motor … page 114
  • 4.18 “E9” Outdoor Unit: Malfunction
    of Moving Part of Electronic Expansion
    Valve … page 116
  • 4.19 “F3” Outdoor Unit: Abnormal
    Discharge Pipe Temperature … page 118
  • 4.20 “H9” Outdoor Unit: Malfunction
    of Thermistor (R1T) for Outdoor Air … page 119
  • 4.21 “J3” Outdoor Unit: Malfunction
    of Discharge Pipe Thermistor (R3T) … page 120
  • 4.22 “J5” Outdoor Unit: Malfunction of
    Thermistor (R2T) for Suction Pipe … page 121
  • 4.23 “J6” Outdoor Unit: Malfunction of
    Thermistor (R4T) for Outdoor Unit Heat Exchanger
    Deicer … page 122
  • 4.24 “J9” Outdoor Unit: Malfunction of
    Subcooling Heat Exchanger Gas Pipe T
    hermistor (R5T) … page 123
  • 4.25 “JA” Outdoor Unit: Malfunction of
    High Pressure Sensor … page 124
  • 4.26 “JC” Outdoor Unit: Malfunction of
    Low Pressure Sensor … page 126
  • 4.27 “L4” Outdoor Unit: Malfunction of
    Inverter Radiating Fin Temperature Rise … page 127
  • 4.28 “L5” Outdoor Unit: Inverter
    Compressor Abnormal … page 128
  • 4.29 “L8” Outdoor Unit: Inverter Current
    Abnormal … page 129
  • 4.30 “L9” Outdoor Unit: Inverter Start up
    Error … page .131
  • 4.31 “LC” Outdoor Unit: Malfunction of
    Transmission between Inverter and Control
    PC Board … page 132
  • 4.32 “P4” Outdoor Unit: Malfunction of
    Inverter Radiating Fin Temperature Rise Sensor … page 134
  • 4.33 “PJ” Outdoor Unit: Faulty
    Combination of Inverter and Fan Driver … page 135
  • 4.34 “UO” Outdoor Unit: Low Pressure
    Drop Due to Refrigerant Shortage or
    Electronic Expansion Valve Failure … page 136
  • 4.35 “U2” Outdoor Unit: Power Supply
    Insufficient or Instantaneous Failure … page 137
  • 4.36 “U3” Outdoor Unit: Check O
    peration not Executed … page 139
  • 4.37 “U4” Malfunction of Transmission
    between Indoor Units and Outdoor Units … page 140
  • 4.38 “U5” Indoor Unit: Malfunction of
    Transmission between Remote Controller
    and Indoor Unit … page 142
  • 4.39 “U8” Indoor Unit: Malfunction of
    Transmission between Main and Sub Remote
    Controllers … page 143
  • 4.40 “U9” Indoor Unit: Malfunction
    of Transmission between Indoor Units and
    Outdoor Units in the Same System … page 144
  • 4.41 “UA” Improper Combination of
    Indoor Units and Outdoor Units, Indoor Units
    and Remote Controller … page 146
  • 4.42 “UC” Address Duplication of
    Centralized Controller … page 147
  • 4.43 “UE” Malfunction of Transmission
    between Centralized Controller and Indoor Unit … page 148
  • 4.44 “UF” System is not Set yet … page 150
  • 4.45 “UH” Malfunction of System,
    Refrigerant System Address Undefined … page 151
  • 5. Troubleshooting by Indication
    on the Central Remote Controller … page 152
  • 5.1 “M1” PC Board Defect … page 152
  • 5.2 “M8” Malfunction of Transmission
    between Optional Controllers for Centralized
    Control … page 153
  • 5.3 “MA” Improper Combination of
    Optional Controllers for Centralized
    Control … page 154
  • 5.4 “MC” Address Duplication,
    Improper Setting … page 156
  • 6. Troubleshooting by Indication
    on the Unified ON/OFF Controller … page 157
  • 6.1 Operation Lamp Blinks … page 157
  • 6.2 Display “Under Centralized
    Control” Blinks (Repeats Single Blink) … page 159
  • 6.3 Display “Under Centralized Control”
    Blinks (Repeats Double Blink) … page 162
  • 7. Troubleshooting
    OP: Schedule Timer) … page 163
  • 7.1 “UE” Malfunction of Transmission
    between Centralized Controller and Indoor
    Unit … page 163
  • 7.2 “M1” PC Board Defect … page 165
  • 7.3 “M8” Malfunction of Transmission
    between Optional Controllers for Centralized
    Control … page 166
  • 7.4 “MA” Improper Combination of Optional
    Controllers for Centralized Control … page 167
  • 7.5 “MC” Address Duplication,
    Improper Controllers for
    Setting … page 169
  • 8. Check … page 170
  • Appendix … page 173

  • 1. Piping Diagrams … page 174
  • 1.1 Outdoor Unit … page 174
  • 1.2 Indoor Unit … page 175
  • 2. Wiring Diagrams for Reference … page 176
  • 2.1 Outdoor Unit … page 176
  • 2.2 Indoor Unit … page 177
  • 3. Thermistor Resistance / Temperature
    Characteristics … page 179
  • 4. Pressure Sensor … page 181
  • Precautions for New Refrigerant
    (R-410A) … page 183

  • 1. Precautions for New Refrigerant
    (R-410A) … page 184
  • 1.1 Outline … page 184
  • 1.2 Service Tools … page 186
  • Index …
    Drawings & Flow Charts …