Daikin ERQ Service Manual page 5

ESIE09-05
4. Troubleshooting by Indication on the Unified ON/OFF Controller.......218
Part 10 Appendix ........................................................................ 227
Table of Contents
3.10 "C6" AHU: Failure of Combination (Between AHU PC Board and Fan PC
Board)...................................................................................................176
3.11 "C9" AHU: Malfunction of Thermistor (R1T) for Suction Air .................177
3.12 "CA" AHU: Malfunction of Thermistor for Discharge Air .......................178
3.13 "CC" AHU: Malfunction of Humidity Sensor System ............................179
3.14 "CJ" AHU: Malfunction of Thermostat Sensor in Remote Controller ....180
3.15 "E1" Outdoor Unit: PC Board Defect ....................................................181
3.16 "E3" Outdoor Unit: Actuation of High Pressure Switch.........................182
3.17 "E4" Outdoor Unit: Actuation of Low Pressure Sensor.........................184
3.18 "E5" Inverter Compressor Motor Lock ..................................................186
3.19 "E7" Malfunction of Outdoor Unit Fan Motor ........................................187
3.20 "E9" Outdoor Unit: Malfunction of Moving Part of Electronic Expansion
Valve (Y1E, Y3E) .................................................................................188
3.21 "F3" Outdoor Unit: Abnormal Discharge Pipe Temperature .................190
3.22 "F6" Outdoor Unit: Refrigerant Overcharged........................................191
3.23 "H9" Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air....192
3.24 "J3" Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R2T)....193
3.25 "J5" Outdoor Unit: Malfunction of Thermistor (R3T, R5T) for Suction Pipe
1, 2 .......................................................................................................194
3.26 "J6" Outdoor Unit: Malfunction of Thermistor (R6T) .............................195
3.27 "J7" Outdoor Unit: Malfunction of Thermistor (R7T) for Outdoor Unit Liquid
Pipe ......................................................................................................196
3.28 "J9" Outdoor Unit: Malfunction of Thermistor (R4T) .............................197
3.29 "JA" Outdoor Unit: Malfunction of High Pressure Sensor.....................198
3.30 "JC" Outdoor Unit: Malfunction of Low Pressure Sensor .....................199
3.31 "L1" Outdoor Unit: Malfunction of PC Board.........................................200
3.32 "L4" Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature
Rise ......................................................................................................201
3.33 "L5" Outdoor Unit: Inverter Compressor Abnormal ..............................202
3.34 "L8" Outdoor Unit: Inverter Current Abnormal ......................................203
3.35 "L9" Outdoor Unit: Inverter Start up Error.............................................204
3.36 "LC" Outdoor Unit: Malfunction of Transmission between Inverter and
Control PC Board .................................................................................205
3.37 "P1" Outdoor Unit: High Voltage of Capacitor in Main Inverter Circuit .206
3.38 "U0" Low Pressure Drop Due to Refrigerant Shortage or Electronic
Expansion Valve Failure.......................................................................207
3.39 "U2" Power Supply Insufficient or Instantaneous Failure .....................209
3.40 "U3" Check Operation not Executed ....................................................211
3.41 "U4" Malfunction of Transmission between AHUs and Outdoor Units .212
3.42 "U5" Malfunction of Transmission between Remote Controller and
AHU......................................................................................................214
3.43 "UA" Excessive Number of AHUs.........................................................215
3.44 "UF" System is not Set yet ...................................................................216
3.45 "UH" Malfunction of System, Refrigerant System Address Undefined .217
4.1 Operation Lamp Blinks .........................................................................218
4.2 Display "Under Host Computer Integrate Control" Blinks (Repeats Single
Blink) ....................................................................................................220
4.3 Display "Under Host Computer Integrate Control" Blinks (Repeats Double
Blink) ....................................................................................................223
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