DaikinAC VRV-S SYSTEM RXYMQ36·48PVJU R-410A Heat Pump 60Hz Service Manual

This Service Manual is for RXYMQ36·48PVJU R-410A Heat Pump 60Hz SiUS34-907

 

Indoor Units

Ceiling mounted cassette type (Multi flow)
FXFQ12MVJU ; FXFQ18MVJU ; FXFQ24MVJU ; FXFQ30MVJU ; FXFQ36MVJU
4-way ceiling mounted cassette unit (2’×2’)
FXZQ07M7 ; FXZQ09M7 ; FXZQ12M7 ; FXZQ18M7
Slim ceiling-mounted duct type
FXDQ07MVJU ; FXDQ09MVJU ; FXDQ12MVJU ; FXDQ18MVJU ; FXDQ24MVJU
Ceiling mounted duct type
FXMQ07PVJU ; FXMQ09PVJU ; FXMQ12PVJU ; FXMQ18PVJU ; FXMQ24PVJU ; FXMQ30PVJU ; FXMQ36PVJU ; FXMQ48PVJU
Ceiling suspended type
FXHQ12MVJU ; FXHQ24MVJU ; FXHQ36MVJU
Wall mounted type
FXAQ07MVJU ; FXAQ09MVJU ; FXAQ12MVJU ; FXAQ18MVJU ; FXAQ24MVJU
Floor standing type
FXLQ12MVJU ; FXLQ18MVJU ; FXLQ24MVJU
Concealed floor standing type
FXNQ12MVJU ; FXNQ18MVJU FXNQ24MVJU

 

Outdoor Units

RRXYMQ36PVJU ; RXYMQ48PVJU

 

CONTENTS:

  • 1. Introduction … v
  • 1.1 Safety Considerations for Repair … v
  • 1.2 Safety Considerations for Users… vi
  • 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 3
  • 3. Capacity Range … page 4
  • 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 20

  • 1. List of Electrical and Functional
    Parts … page 21
  • 1.1 Outdoor Unit … page 21
  • 1.2 Indoor Unit … page 22
  • Refrigerant Circuit … page 26

  • 1. Refrigerant Circuit … page 27
  • 1.1 RXYMQ36 · 48P … page 27
  • 2. Functional Parts Layout … page 29
  • 2.1 RXYMQ36 · 48P … page 29
  • Function … page 30

  • 1. Operation Mode … page 31
  • 2. Basic Control … page 32
  • 2.1 Normal Operation … page 32
  • 2.2 Compressor PI Control … page 33
  • 2.3 Electronic Expansion Valve PI
    Control … page 34
  • 2.4 Cooling Operation Fan Control … page 35
  • 3. Special Control … page 36
  • 3.1 Startup Control … page 36
  • 3.2 Oil Return Operation … page 37
  • 3.3 Defrosting Operation … page 39
  • 3.4 Pump Down Residual Operation … page 40
  • 3.5 Restart Standby … page 41
  • 3.6 Stopping Operation … page 41
  • 4. Protection Control … page 42
  • 4.1 High Pressure Protection Control … page 42
  • 4.2 Low Pressure Protection Control … page 43
  • 4.3 Discharge Pipe Protection Control … page 44
  • 4.4 Inverter Protection Control … page 45
  • 5. Other Control … page 46
  • 5.1 Demand Operation … page 46
  • 5.2 Heating Operation Prohibition … page 46
  • 6. Outline of Control (Indoor Unit) … page 46
  • 6.1 Drain Pump Control … page 46
  • 6.2 Louver Control for Preventing
    Ceiling Dirt … page 49
  • 6.3 Thermostat Sensor in Remote
    Controller … page 50
  • 6.4 Freeze Prevention … page 52
  • 6.5 View of Operations of Swing
    Flaps … page 53
  • Test Operation … page 54

  • 1. Test Operation … page 55
  • 1.1 Procedure and Outline … page 55
  • 1.2 Operation when Power is
    Turned On … page 57
  • 2. Outdoor Unit PCB 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 73
  • Troubleshooting … page 90

  • 1. Symptom-based Troubleshooting … page 92
  • 2. Troubleshooting by Remote
    Controller … page 95
  • 2.1 Self-diagnosis by Wired
    Remote Controller … page 96
  • 2.2 Self-diagnosis by Wireless
    Remote Controller … page 97
  • 2.3 Remote Controller Maintenance
    Mode … page 99
  • 2.4 Remote Controller Self-Diagnosis
    Function … page 102
  • 3. Troubleshooting by Indication on
    the Remote Controller … page 109
  • 3.1 “A0” Error of External Protection
    Device … page 109
  • 3.2 “A1” PCB Defect … page 110
  • 3.3 “A3” Malfunction of Drain Level
    Control System (S1L) … page 111
  • 3.4 “A6” Fan Motor (M1F) Lock,
    ]Overload … page 113
  • “A6” Malfunction of Indoor Unit
    Fan Motor … page 115
  • 3.5 “A7” Malfunction of Swing Flap
    Motor (M1S) … page 119
  • 3.6 “A9” Malfunction of Moving Part
    of Electronic Expansion Valve (Y1E) … page 121
  • 3.7 “AF” Drain Level above Limit … page 123
  • 3.8 “AJ” Malfunction of Capacity
    Determination Device … page 124
  • 3.9 “C4” Malfunction of Thermistor
    (R2T) for Heat Exchanger … page 125
  • 3.10 “C5” Malfunction of Thermistor
    (R3T) for Gas Pipe … page 126
  • 3.11 “C9” Malfunction of Thermistor
    (R1T) for Suction Air … page 127
  • 3.12 “CJ” Malfunction of Thermostat
    Sensor in Remote Controller … page 128
  • 3.13 “E1” PCB Defect … page 129
  • 3.14 “E3” Actuation of High Pressure
    Switch … page 130
  • 3.15 “E4” Actuation of Low Pressure
    Sensor … page 133
  • 3.16 “E5” Inverter Compressor Motor
    Lock … page 135
  • 3.17 “E7” Malfunction of Outdoor
    Unit Fan Motor … page 138
  • 3.18 “E9” Malfunction of Moving Part of
    Electronic Expansion Valve (Y1E, Y3E) … page 141
  • 3.19 “F3” Abnormal Discharge Pipe
    Temperature (R2T) … page 143
  • 3.20 “F6” Refrigerant Overcharged … page 145
  • 3.21 “H9” Malfunction of Thermistor
    (R1T) for Outdoor Air … page 146
  • 3.22 “J3” Malfunction of Discharge
    Pipe Thermistor (R2T) … page 147
  • 3.23 “J5” Malfunction of Thermistor
    (R3T, R5T) for Suction Pipe 1, 2 … page 148
  • 3.24 “J6” Malfunction of Thermistor (R4T) for
    Outdoor Unit Heat Exchanger … page 149
  • 3.25 “J7” Malfunction of Thermistor (R7T)
    for Outdoor Unit Liquid Pipe … page 150
  • 3.26 “J9” Malfunction of Subcooling Heat
    Exchanger Gas Pipe Thermistor (R6T) … page 151
  • 3.27 “JA” Malfunction of High
    Pressure Sensor … page 152
  • 3.28 “JC” Malfunction of Low
    Pressure Sensor … page 154
  • 3.29 “L1” Malfunction of PCB … page 157
  • 3.30 “L4” Malfunction of Inverter
    Radiation Fin Temperature Rise … page 159
  • 3.31 “L5” Inverter Compressor Abnormal … page 162
  • 3.32 “L8” Inverter Current Abnormal … page 164
  • 3.33 “L9” Inverter Compressor Start
    up Error … page 166
  • 3.34 “P1” High Voltage of Capacitor
    in Main Inverter Circuit … page 169
  • 3.35 “P4” Malfunction of Inverter
    Radiating Fin Temperature Rise Sensor … page 171
  • 3.36 “U0” Low Pressure Drop Due to
    Refrigerant Shortage or
    Electronic Expansion Valve Failure … page 173
  • 3.37 “U2” Power Supply Insufficient
    or Instantaneous Failure … page 175
  • 3.38 “U3” Check Operation is not Executed … page 178
  • 3.39 “U4” Malfunction of Transmission between
    Indoor Units and Outdoor Units … page 179
  • 3.40 “U5” Malfunction of Transmis … page 183
  • 3.41 “U8” Malfunction of Transmission between
    Main and Sub Remote Controllers … page 185
  • 3.42 “U9” Malfunction of Transmission between
    Indoor Units and Outdoor Units in the
    Same System … page 186
  • 3.43 “UA” Improper Combination of Indoor
    and Outdoor Units etc … page 187
  • 3.44 “UC” Address Duplication of
    Centralized Remote Controller … page 190
  • 3.45 “UE” Malfunction of Transmission between
    Centralized Remote Controller and
    Indoor Unit … page 191
  • 3.46 “UF” System is not Set yet … page 194
  • 3.47 “UH” Malfunction of System,
    Refrigerant System Address Undefined … page 195
  • 4. Troubleshooting (OP: Centralized
    Remote Controller) … page 197
  • 4.1 “M1” PCB Defect … page 197
  • 4.2 “M8” Malfunction of Transmission between
    Optional Controllers for Centralized Control … page 198
  • 4.3 “MA” Improper Combination of Optional
    Controllers for Centralized Control … page 200
  • 4.4 “MC” Address Duplication, Improper
    Setting … page 202
  • 5. Troubleshooting (OP: Unified ON/
    OFF Controller) … page 204
  • 5.1 Operation Lamp Blinks … page 204
  • 5.2 Display “Under Centralized Control”
    Blinks (Repeats Single Blink) … page 206
  • 5.3 Display “Under Centralized Control”
    Blinks (Repeats Double Blink) … page 209
  • Appendix … page 222

  • 1. Piping Diagrams … page 223
  • 1.1 Outdoor Unit … page 223
  • 1.2 Indoor Unit … page 224
  • 2. Wiring Diagrams … page 227
  • 2.1 Outdoor Unit … page 227
  • 2.2 Field Wiring … page 228
  • 2.3 Indoor Unit … page 229
  • 3. Option List … page 236
  • 3.1 Option List of Controllers … page 236
  • 3.2 Option List of Outdoor Unit … page 237
  • 4. Example of Connection … page 239
  • 5. Thermistor Resistance /
    Temperature Characteristics … page 241
  • 6. Pressure Sensor … page 243
  • Precautions for New Refrigerant
    (R-410A) … page 244

  • 1. Precautions for New Refrigerant
    (R-410A) … page 245
  • 1.1 Outline … page 245
  • 1.2 Refrigerant Cylinders … page 247