Troubleshooting Flow - Mitsubishi Heavy Industries FDT40VF Technical Manual

1.12.2 Troubleshooting flow

(1) List of troubles
a) FDT, FDTC, FDEN, FDU, FDUM, FDF series
Remote controller display
None Operates but does not cool.
None Operates but does not heat.
None Earth leakage breaker activated
None Excessive noise/vibration (1/3)
None Excessive noise/vibration (2/3)
None Excessive noise/vibration (3/3)
None Louver motor failure (FDT, FDTC, FDEN, FDF series)
None Power supply system error (Power supply to indoor control PCB)
None Power supply system error (Power supply to remote controller)
INSPECT I/U INSPECT I/U (When 1 or 2 remote controllers are connected)
INSPECT I/U INSPECT I/U (Connection of 3 units or more remote controllers)
Communication error at initial operation (Models SRC40-60 only)
WAIT
Communication error at initial operation (Models FDC71-140 only)
WAIT
None No display
E1 Remote controller communication circuit error
E5 Communication error during operation
E6 Indoor heat exchanger temperature thermistor anomaly
E7 Return air temperature thermistor anomaly
E8 Heating overload operation
E9 Drain trouble
E10 Excessive number of connected indoor units (more than 17 units) by controlling with one remote controller
E14 Communication error between master and slave indoor units
E16 Indoor fan motor anomaly
E18 Address setting error of moster and slave indoor unit
E19 Indoor unit operation check, drain motor check setting error
E20 Indoor fan motor rotation speed anomaly
E21 Defective panel switch operation (FDT only)
E28 Remote controller temperature thermistor anomaly
E35 Cooling overload operation (Models SRC40-60 only)
E35 Cooling overload operation (Models FDC71-140 only)
E36 Discharge pipe temperature error
E37 Outdoor heat exchanger temperature thermistor anomaly
E38 Outdoor air temperature thermistor anomaly
E39 Discharge pipe temperature thermistor anomaly
E40 High pressure error (63H1 activated) (Models FDC71-140 only)
E41 Power transistor overheat (Models FDC71-140 only)
E42 Current cut
E45 Communication error between inverter PCB and outdoor control PCB (Models FDC71-140 only)
E47 Inverter over-current error (Models SRC40-60 only)
E47 Inverter PCB A/F module anomaly (Model FDC71 only)
E48 Outdoor fan motor anomaly (Models SRC40-60 only)
E48 Outdoor fan motor anomaly (Models FDC71-140 only)
E49 Low pressure error or low pressure sensor anomaly (Models FDC71-140 only)
E51 Power transistor anomaly (Models SRC40-60 only)
E51 Inverter and fan motor anomaly (Models FDC71-140 only)
E53 Suction pipe temperature thermistor anomaly (Models FDC71-140 only)
E54 Low pressure sensor anomaly (Models FDC71-140 only)
E57 Insufficient refrigerant amount or detection of service valve closure (Models SRC40-60 only)
E57 Insufficient refrigerant amount or detection of service valve closure (Models FDC71-140 only)
E58 Current safe stop (Models SRC40-60 only)
E59 Compressor startup failure (Models SRC40-60 only)
E59 Compressor startup failure (Models FDC71-140 only)
E60 Anomalous compressor rotor lock (Models SRC40-60 only)
Description of trouble
363
- -
'12 • PAC-T-173
Reference page
365
366
367
368
369
370
371
372
373
374
375
376 ‐ 378
379 ‐ 381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405・406
407
408
409
410
411
412・413
414
415
416
417
418
419
420
421
422・423
424