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CHECK THE INSTALLATION STATUS
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6-2) IF FAN does not operate
• The refrigerator of this model has BLDC FAN motor. BLDC motor is driven by DC 7~12V.
• On the normal condition of COMP ON, it operates together with F-FAN motor. If door is opened and closed once at a high
ambient temperature, it will be operated after 1 minute delay. Therefore, you are advised not to taken it for an error.
• If there is a trouble, you should select the self-diagnostic function to check the trouble before power off.
◆ Expected causes
①
Check that if FAN-MOTOR has failure itself.
②
Check that if wiring connection has bad contact.
③
Check the input of the fan motor rotation pulsewhen motor fan operates.
Replace MAIN PCB Ground.
Does DC7~12V alternate
with below DC 2V between
MAIN PCB Ground CN51 “15"
(PNK) and CN51 ”19” (GRY)?
Does DC7~12V alternate
with below DC 2V between
MAIN PCB Ground CN51 “16"
(YEL) and CN51 ”20” (GRY)?
Does DC7~12V alternate
with below DC 2V between
MAIN PCB Ground CN51 “21"
(BLU) and CN 51 ”25” (GRY)?
For C-FAN
For R-FAN
For F-FAN
In initial power to appliance, the
compressor and fans of fresh food/
freezer, compressor fan operate.
If freezer temperature is sensed of
41℉ by momentary power failure, fans
will operate after 7 minutes.
Repair the connection of Door switch.
FAN work normally.
Execute manual operation.
Recheck after 7 minutes.
(Time could be delayed
depending on the temperatures.
If the temperature is lower, It
may not operate : about 59℉
(below 15℃)
Power ON with 7 minutes
delay after power OFF.
For preventing the over
load of compressor.)
Door & MICOM State
Door FZ MICOM
(#1)
R MICOM(#5)
Right and Left
Close 0V (Low)
0V (Low)
Open 5V (High)
5V (High)
For C-FAN
For R-FAN
For F-FAN
Is the voltage between
MAIN PCB Ground CN51 “23"
(PRP) and CN51 ”25” (GRY)
around DC7~12V?
Is the external temperature
above 66.2 ℉(19℃ )?
Is the voltage between
MAIN PCB Ground CN51 “18"
(BRN) and CN51 ”20” (GRY)
around DC7~12V?
Is the voltage between
MAIN PCB Ground CN51 “10"
(BLK) and CN51 ”13” (GRY)
around DC4.5~5V?
Is the voltage between
MAIN PCB Ground CN51 “17"
(S/BLU) and CN51 ”19” (GRY)
around DC7~12V?
Is the voltage between
MAIN PCB Ground CN51 “1"
(ORG) and CN51 ”3” (WHT)
around DC4.5~5V?
Is COMPRESSOR ON ?
Start
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes