9-4 HOW TO CHECK THE FAN-ERROR
No signal Error Display
15s
10s
15s
10s
15s
Normal drive
No signal Repeat
20s
10s
15s
10s Pause 30min
Pause 30min
10s
15s 20s
After sending a signal to the fan, the MICOM checks the BLDC fan motor s lock status. If there is no feedback signal from the
BLDC fan, the fan motor stops for 10 seconds and then is powered again for 15 seconds. To determine that there is a fan
motor malfunction, this process is repeated 3 times. If the fan motor is determined to be defective, the error code will be shown
in the display for 30 minutes.
At this point, the process will be repeated until the fan motor operates normally. If normal operation is achieved, the error
display is erased and the MICOM is reset automatically.
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