DaikinAC VRV-S SYSTEM R410A Heat Pump 60Hz RXYMQ-M Series – Service Manual

This Service Manual is for R410A Heat Pump 60Hz RXYMQ-M Series

 

Indoor Units

Ceiling mounted cassette type (Multi flow)
FXFQ12MVJU ; FXFQ18MVJU ; FXFQ24MVJU ; FXFQ30MVJU ; FXFQ36MVJU
Ceiling mounted built-in type
FXSQ12MVJU ; FXSQ18MVJU ; FXSQ24MVJU ; FXSQ30MVJU ; FXSQ36MVJU ; FXSQ48MVJU
Ceiling mounted duct type
FXMQ30MVJU ; FXMQ36MVJU ; FXMQ48MVJU
Ceiling suspended type
FXHQ12MVJU ; FXHQ24MVJU ; FXHQ36MVJU
Wall mounted type
FXAQ12MVJU ; FXAQ18MVJU ; FXAQ24MVJU
Floor standing type
FXLQ12MVJU ; FXLQ18MVJU ; FXLQ24MVJU
Concealed floor standing type
FXNQ12MVJU ; FXNQ18MVJU ; FXNQ24MVJU

 

Outdoor Units

RXYMQ36MVJU ; RXYMQ48MVJU

 

CONTENTS:

  • 1. Indoduction …v
  • 1.1 Safety cautions …v
  •   General Information … page 1

  • 1. Model Names of Indoor/
    Outdoor Units … page 2
  • 2. External Appearance … page 3
  • 2.1 Indoor Units … page 3
  • 2.2 Outdoor Units … page
  • Specifications … page 5

  • 1. Specifications … page 6
  • 1.1 Outdoor Units … page 6
  • 1.2 Indoor Units … page 7
  • List of Electrical and
    Functional Parts … page 17

  • 1. List of Electrical and
    Functional Parts … page 18
  • 1.1 Outdoor Unit … page 18
  • 1.2 Indoor Unit … page 19
  • Refrigerant Circuit … page 23

  • 1. Refrigerant Circuit … page 24
  • 1.1 RXYMQ36 · 48M … page 24
  • 2. Functional Parts Layout … page 26
  • 2.1 RXYMQ36 · 48M … page 26
  • Function … page 27

  • 1. Operation Mode … page 28
  • 2. Basic Control … page 29
  • 2.1 Normal Operation … page 29
  • 2.2 Compressor PI Control … page 30
  • 2.3 Electronic Expansion
    Valve PI Control … page 31
  • 2.4 Cooling Operation Fan
    Control … page 32
  • 3. Special Control … page 33
  • 3.1 Startup Control … page 33
  • 3.2 Oil Return Operation … page 34
  • 3.3 Defrosting Operation … page 36
  • 3.4 Pump-down Residual
    Operation … page 37
  • 3.5 Restart Standby … page 38
  • 3.6 Stopping Operatio … page 39
  • 3.7 Pressure Equalization
    Prior to Startup … page 40
  • 4. Protection Control … page 41
  • 4.1 High Pressure Protection
    Control … page 41
  • 4.2 Low Pressure Protection
    Control … page 42
  • 4.3 Discharge Pipe Protection
    Control … page 43
  • 4.4 Inverter Protection Control … page 44
  • 5. Other Control … page 45
  • 5.1 Demand Operation … page 45
  • 5.2 Heating Operation
    Prohibition … page 45
  • 6. Outline of Control
    (Indoor Unit) … page 46
  • 6.1 Drain Pump Control … page 46
  • 6.2 Louver Control for
    Preventing Ceiling Dirt … page 48
  • 6.3 Thermostat Sensor in
    Remote Controller … page 49
  • 6.4 Freeze Prevention … page 51
  • 6.5 View of Operations
    of Swing Flaps … page 52
  • Test Operation … page 53

  • 1. Test Operation … page 54
  • 1.1 Procedure and Outline … page 54
  • 1.2 Operation when Power
    is Turned On … page 57
  • 2. Outdoor Unit PC Layout … page 58
  • 3. Field Setting … page 59
  • 3.1 Field Setting from
    Remote Controller … page 59
  • 3.2 Field Setting from
    Outdoor Unit … page 70
  • 3.3 Detail of Setting Mode … page 76
  • Troubleshooting … page 87

  • 1. Troubleshooting by
    Remote Controller … page 90
  • 1.1 The INSPECTION/TEST
    Button … page 90
  • 1.2 Self-diagnosis by Wired
    Remote Controller … page 91
  • 1.3 Self-diagnosis by Wireless
    Remote Controller … page 92
  • 1.4 Operation of the Remote
    Controller’s Inspection/
    Test Operation Button … page 94
  • 1.5 Remote Controller Service Mode … page 95
  • 2.List of Malfunction Code … page 97
  • 3.Malfunction Code Indication by
    Outdoor Unit PCB … page 100
  • 4. Troubleshooting by Indication
    on the Remote Controller … page 102
  • 4.1 “A0” Indoor Unit:Error of External
    Protection Device … page 102
  • 4.2 “A1” Indoor Unit:PC Board Defect … page 103
  • 4.3 “A3” Indoor Unit:Malfunction of
    Drain Level Control System (S1L) … page 104
  • 4.4 “A6” Indoor Unit:Fan Motor (M1F)
    Lock, Overload … page 106
  • 4.5 “A7” Indoor Unit:Malfunction of
    Swing Flap Motor (MA) … page 107
  • 4.6 “A9” Indoor Unit:Malfunction of
    Moving Part of Electronic
    Expansion Valve (20E) … page 109
  • 4.7 “AF” Indoor Unit:Drain Level
    above Limit … page 111
  • 4.8 “AJ” Indoor Unit:Malfunction
    of Capacity Determination Device … page 112
  • 4.9 “C4” Indoor Unit:Malfunction
    of Thermistor (R2T) for Heat Exchanger … page 113
  • 4.10 “C5” Indoor Unit:Malfunction
    of Thermistor (R3T) for Gas Pipe … page 114
  • 4.11 “C9” Indoor Unit:Malfunction
    of Thermistor (R1T) for Suction Air … page 115
  • 4.12 “CR“ Indoor Unit:Malfunction
    of Thermistor for Discharge Air … page 116
  • 4.13 “CJ” Indoor Unit:Malfunction
    of Thermostat Sensor in
    Remote Controller … page 117
  • 4.14 “E1” Outdoor Unit:PC Board
    Defect … page 118
  • 4.15 “E3” Outdoor Unit:Actuation
    of High Pressure Switch … page 119
  • 4.16 “E4” Outdoor Unit:Actuation
    of Low Pressure Switch … page 120
  • 4.17 “E5” Outdoor Unit:Compressor
    Motor Lock … page 122
  • 4.18 “E7” Outdoor Unit:Malfunction
    of Outdoor Unit Fan Motor … page 123
  • 4.19 “E9” Outdoor Unit:Malfunction
    of Moving Part of
    Electronic Expansion Valve … page 125
  • 4.20 “F3” Outdoor Unit:Abnormal
    Discharge Pipe Temperature … page 127
  • 4.21 “H9” Outdoor Unit:Malfunction
    of Thermistor (R1T) for Outdoor Air … page 128
  • 4.22 “J3” Outdoor Unit:Malfunction
    of Discharge Pipe Thermistor (R3T) … page 129
  • 4.23 “J5” Outdoor Unit:Malfunction
    of Thermistor (R2T) for Suction Pipe … page 130
  • 4.24 “J6” Outdoor Unit:Malfunction
    of Thermistor (R4T) for
    Outdoor Unit Heat Exchanger … page 131
  • 4.25 “J9” Outdoor Unit:Malfunction
    of Subcooling Heat Exchanger Gas Pipe
    Thermistor (R5T) … page 132
  • 4.26 “JA” Outdoor Unit:Malfunction
    of High Pressure Sensor … page 133
  • 4.27 “JC” Outdoor Unit:Malfunction
    of Low Pressure Sensor … page 135
  • 4.28 “L4” Outdoor Unit:Malfunction
    of Inverter Radiation Fin
    Temperature Rise … page 136
  • 4.29 “L5” Outdoor Unit:Inverter
    Compressor Abnormal … page 137
  • 4.30 “L8” Outdoor Unit:Inverter
    Current Abnormal … page 138
  • 4.31 “L9” Outdoor Unit:Inverter
    Compressor Start up Error … page 140
  • 4.32 “LC” Outdoor Unit:Malfunction
    of Transmission between Inverter
    and Control PC Board … page 141
  • 4.33 “P4” Outdoor Unit:Malfunction
    of Inverter Radiating Fin
    Temperature Rise Sensor……. 143
  • 4.34 “PJ” Outdoor Unit:Faulty Combination
    of Inverter and Fan Driver … page 144
  • 4.35 “U0” Outdoor Unit:Low Pressure Drop
    Due to Refrigerant Shortage or Electronic
    Expansion Valve Failure … page 145
  • 4.36 “U2” Outdoor Unit:Power Supply
    Insufficient or Instantaneous Failure … page 146
  • 4.37 “U3” Outdoor Unit:Check Operation
    is not Executed … page 148
  • 4.38 “U4” Malfunction of Transmission between
    Indoor Units and Outdoor Units … page 149
  • 4.39 “U5” Indoor Unit:Malfunction
    of Transmission between Remote
    Controller and Indoor Unit … page 151
  • 4.40 “U8” Indoor Unit:Malfunction
    of Transmission between Main
    and Sub Remote Controllers …page 152
  • 4.41 “U9” Indoor Unit:Malfunction
    of Transmission betweenIndoor Units
    and Outdoor Units in the
    Same System … page 153
  • 4.42 “UA” Improper Combination of Indoor
    Units and Outdoor Units,Indoor
    Units and Remote Controller … page 155
  • 4.43 “UC” Address Duplication of Central
    Remote Controller … page 156
  • 4.44 “UE” Malfunction of Transmission between
    Central Remote Controller and Indoor Unit … page 157
  • 4.45 “UF” System not Set yet … page 159
  • 4.46 “UH” Malfunction of System, Refrigerant
    System Address Undefined … page 160
  • 5.Troubleshooting by Indication on the Central
    Remote Controller … page 161
  • 5.1 “UE” Malfunction of Transmission between
    Central Remote Controller and Indoor Unit … page 161
  • 5.2 “M1” PC Board Defect … page 163
  • 5.3 “M8” Malfunction of Transmission between
    Optional Controllers for Centralized Control … page 164
  • 5.4 “MA” Improper Combination of Optional
    Controllers for Centralized Control … page 165
  • 5.5 “MC” Address Duplication,
    Improper Setting … page 167
  • 6.Troubleshooting by Indication on the
    Unified ON/OFF Controller … page 168
  • 6.1 Operation Lamp Blinks … page 168
  • 6.2 Display”Under Centralized Control”
    Blinks(Repeats Single Blink) … page 170
  • 6.3 Display”Under Centralized Control”
    Blinks(Repeats Double Blink) … page 173
  • 7.Troubleshooting (OP:Schedule Timer) … page 174
  • 7.1 “UE” Malfunction of Transmission
    between Central Remote Controller
    and Indoor Unit … page 174
  • 7.2 “M1” PC Board Defect … page 176
  • 7.3 “M8” Malfunction of Transmission between
    Optional Controllers for Centralized Control … page 177
  • 7.4 “MA” Improper Combination of Optional
    Controllers for Centralized Control … page 178
  • 7.5 “MC” Address Duplication,
    Improper Setting … page 180
  • 8.Check … page 181
  • Appendix … page 183

  • 1. Piping Diagrams … page 184
  • 1.1 Outdoor Unit …page 184
  • 1.2 Indoor Unit … page 185
  • 2. Wiring Diagrams for Reference … page 186
  • 2.1 Outdoor Unit … page 186
  • 2.2 Indoor Unit … page 187
  • 3.Thermistor Resistance / Temperature
    Characteristics … page 190
  • 4. Pressure Sensor … page 192
  • Precautions for New Refrigerant
    (R410A) … page 193

  • 1. Precautions for New Refrigerant
    (R410A) … page 194
  • 1.1 Outline …page 194
  • 1.2 Service Tools … page 196
  • Index … i
  • Drawings & Flow Charts … v