4.How to check the Fan-Error
(1)6871JB1431A ( ~ July 2007)
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 5 times. If the fan motor is determined to be defective, the error code will be shown continuously in the display. At this point, there is no further check of the fan motor.
No signal |
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| Error Display |
15s |
| 15s | 15s | 15s | 15s |
Normal | 10s | 10s | 10s |
| 10s |
drive |
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(2)EBR34917102 ( Aug 2007 ~)
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.
No signal
15s
Normal drive
No signal 
15s
Pause 30min
10s
10s
15s15s
10s
15s15s
10s
Repeat 
15s
Pause 30min
10s
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