8.2.2 Troubleshooting flow
(1) List of troubles
Remote control display
Description of trouble Reference page
None Operates but does not cool 227
None Operates but does not heat 228
None Earth leakage breaker activated 229
None Excessive noise/vibration (1/3) 230
None Excessive noise/vibration (2/3) 231
None Excessive noise/vibration (3/3) 232
None Louver motor failure (FDTC and FDE only) 233
None
Power source system error (Power source to indoor control PCB)
234
None Power
source
system error (Power
source
to remote control) 235
INSPECT I/U INSPECT I/U (When 1 or 2 remote controls are connected) 236
INSPECT I/U INSPECT I/U (Connection of 3 units or more remote controls) 237
Communication error at initial operation 238−240
E1 Remote control communication circuit error 241
E5 Communication error during operation 242
E6 Indoor heat exchanger temperature sensor anomaly 243
E7 Return air temperature sensor anomaly 244
E8 Heating overload operation 245
E9 Drain trouble (FDTC and FDUM only) 246
E10
Excessive number of connected indoor units (more than 17 units) by controlling with one remote control
247
E11
Address setting error of indoor units
248
E16 Indoor fan motor anomaly 249
E19 Indoor unit operation check, drain motor check setting error 250
E20 Indoor fan motor rotation speed anomaly 251
E28 Remote control temperature sensor anomaly 252
E35 Cooling high pressure operation 253
E36 Discharge pipe temperature error 254
E37 Outdoor heat exchanger temperature sensor anomaly 255
E38 Outdoor air temperature sensor anomaly 256
E39 Discharge pipe temperature sensor anomaly 257
E42 Current cut 258·259
E45 Outdoor sub PCB communication error 260
E47 Active filter voltage error 261
E48 Outdoor fan motor anomaly 262
E51 Power transistor anomaly 263
E53 Suction pipe temperature sensor anomaly 264
E57 Insufficient refrigerant amount or detection of service valve closure 265
E58 Current safe stop 266
E59 Compressor startup failure 267
E60 Compressor rotor lock error 268
-
226
-
'18 • SCM-T-251
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