Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 928

FDC-HKX
Current cut is indicated and the compressor cannot operate
Disconnect the compressor wiring
The compressor can operate
Is the current
cut function activated?
NO
Is the output
voltage of the inverter
normal?
YES
When the compressor wiring is
performed, the unit can operate.
Isn't the stating
current (2) excessive?
NO
Defective inverter
926
Is the insullation
resistance of the compressor
YES
YES
Defective inverter
(Refer to 933 page)
NO
Defective inverter
(Refer to 933 page)
YES
Defective compressor
Inverter output voltage
Frequency
Model
All models
(outdoor unit)
NO
Defective compressor
(1)
proper?
Notes (1) when a short-circuit or ground-fault occurs in the
compressor motor, the current cut function is also
activated.
If the insulation resistance is 10MΩ or more, it is
normal.
The insulation resistance may considerably drop
depending on the refrigerant volume in the
compressor, but this is not faulty.
(2) 1-2 seconds after a start :
FDC140 type : Approx. 14A
FDC224 type : Approx. 32A
FDC280 type : Approx. 37A
35Hz 40Hz
160 ~ 180 180 ~ 210 290 ~ 320
Unit : V (AC)
65Hz 75Hz 95Hz
330 ~ 360 380 ~ 410