Daikin ERQ Series Service Manual page 5

ESiEN09-06 A
Table of Contents
3.4 "A6" AHU: Fan Motor (M1F) Lock, Overload........................................197
3.5 "A9" AHU: Malfunction of Moving Part of Electronic Expansion
Valve (Y1E) ..........................................................................................198
3.6 "AF" AHU: Drain Level above Limit ......................................................200
3.7 "AJ" AHU: Malfunction of Capacity Determination Device ...................201
3.8 "C4" AHU: Malfunction of Thermistor (R2T) for Heat Exchanger .........202
3.9 "C5" AHU: Malfunction of Thermistor (R3T) for Gas Pipes ..................203
3.10 "C9" AHU: Malfunction of Thermistor (R1T) for Suction Air .................204
3.11 "CJ" AHU: Malfunction of Thermostat Sensor in Remote Controller ....205
3.12 "E1" Outdoor Unit: PC Board Defect ....................................................206
3.13 "E3" Outdoor Unit: Actuation of High Pressure Switch.........................207
3.14 "E4" Outdoor Unit: Actuation of Low Pressure Sensor.........................209
3.15 "E5" Outdoor Unit: Inverter Compressor Motor Lock............................211
3.16 "E6" Outdoor Unit: STD Compressor Motor Overcurrent/Lock.............213
3.17 "E7" Outdoor Unit: Malfunction of Outdoor Unit Fan Motor ..................214
3.18 "E9" Outdoor Unit: Malfunction of Moving Part of Electronic
Expansion Valve (Y1E, Y2E)................................................................217
3.19 "F3" Outdoor Unit: Abnormal Discharge Pipe Temperature .................219
3.20 "F6" Outdoor Unit: Refrigerant Overcharged........................................220
3.21 "H7" Outdoor Unit: Abnormal Outdoor Fan Motor Signal .....................221
3.22 "H9" Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air....222
3.23 "J2" Outdoor Unit: Current Sensor Malfunction ....................................223
3.24 "J3" Outdoor Unit: Malfunction of Discharge Pipe Thermistor
(R3, R31~33T) .....................................................................................224
3.25 "J5" Outdoor Unit: Malfunction of Thermistor (R2T), (R7T) for
Suction Pipe .........................................................................................225
3.26 "J6" Outdoor Unit: Malfunction of Thermistor (R4T) for Outdoor
Unit Heat Exchanger ............................................................................226
3.27 "J7" Outdoor Unit: Malfunction of Liquid Pipe Thermistor (R6T) ..........227
3.28 "J9" Outdoor Unit: Malfunction of Subcooling Heat Exchanger
Gas Pipe Thermistor (R5T) ..................................................................228
3.29 "JA" Outdoor Unit: Malfunction of High Pressure Sensor.....................229
3.30 "JC" Outdoor Unit: Malfunction of Low Pressure Sensor .....................230
3.31 "L4" Outdoor Unit: Malfunction of Inverter Radiating Fin
Temperature Rise.................................................................................231
3.32 "L5" Outdoor Unit: Inverter Compressor Abnormal ..............................233
3.33 "L8" Outdoor Unit: Inverter Current Abnormal ......................................235
3.34 "L9" Outdoor Unit: Inverter Start up Error.............................................237
3.35 "LC" Outdoor Unit: Malfunction of Transmission Between
Inverter and Control PC Board .............................................................239
3.36 "P1" Outdoor Unit: Inverter Over-Ripple Protection..............................242
3.37 "P4" Outdoor Unit: Malfunction of Inverter Radiating Fin
Temperature Rise Sensor ....................................................................243
3.38 "PJ" Outdoor Unit: Faulty Field Setting after Replacing Main
PC Board or Faulty Combination of PC Board .....................................245
3.39 "UO" Outdoor Unit: Low Pressure Drop Due to Refrigerant
Shortage or Electronic Expansion Valve Failure ..................................246
3.40 "U1" Reverse Phase, Open Phase.......................................................247
3.41 "U2" Outdoor Unit: Power Supply Insufficient or Instantaneous
Failure ..................................................................................................248
3.42 "U3" Outdoor Unit: Check Operation not Executed ..............................251
3.43 "U4" Malfunction of Transmission Between AHUs ...............................252
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