104
Alarm
Code
57
Abnormality of Fan Motor
●
The alarm code is ashed on the 7-segment display of the outdoor unit.
●
The alarm code is displayed on the wired controller of the indoor unit.
★
If the revolution of the fan motor is less than 10rpm in 10 seconds after the fan motor starts operation, the
fan motor stops. The fan motor restarts operation automatically after 10 seconds (During this, the compressor
continues to operate). If this occurs again nine times in the next ve minutes, this alarm code is displayed.
This alarm is caused by locking or electrical abnormality of the fan motor.
Restart operation
Does fan motor run when
inverter failure occurs?
Yes
No
Yes
Replace
driver of fan
motor.
Turn OFF outdoor unit
power supply and
disconnect compressor and
fan motor wiring.
Short circuit TCN10 (FCT)
connector.
Does it fail?
No
Is the power supply voltage higher than
85% of the rated voltage during
operation?
Turn OFF power supply and check if the
fan blade rotates smoothly.
Yes
Check fan
motor if wiring
is normal.
Replace fan
motor.
No
Yes
Replace
driver of fan
motor.
Check the power supply voltage, remove the
fault to avoid the voltage too low or too high
Check if there are any obstacles.
Replace the fan motor if it is damaged.
Fan motor damaged, replace fan motor.
Yes
Yes
No
No
TROUBLESHOOTING
To Next Page
Loading...
