Daikin ERQ Service Manual page 160

4. Troubleshooting by Indication on the Unified ON/OFF Controller.......218
150
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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ESIE09-05
Troubleshooting