6-4) When Fan & Damper Does Not Operate - Samsung RS2530B Service Manual

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TROUBLE SHOOTING
6-4) When FAN & DAMPER does not operate
Note
"Check out the F-FAN with the Forced Operation selected"
1. Freezer FAN, Refrigerator DAMPER and COMP COOLING FAN remains off while COMP is turned off.
2. When Comp is ON, Damper does not always remain ON (including Forced Operaation) and when Refrigerator
temp reaches to set temp, Damper remains OFF.
3. When R-Room & Freezer get closeed after being opened, each Fan & Damper starts up immediately.
(Comp ON condition)
1) When Freezer FAN(F-FAN) does not operate
MICOM voltage
DOOR OPEN : 5V
DOOR CLOSE : 0V
Start
Is it during
Forced Operation?
YES
Does Fan operate with
DOOR S/W presses?
YES
Is DOOR S/W normal?
YES
Is voltage of MICOM
#49 normal?
YES
Is insertion of
CN71(W/BLUE) of MAIN
PCB normal?
YES
Is voltage of MICOM
Pin #34 "HIGH"(5V)?
YES
Is IC3 #17 "LOW"?
YES
Is Freezer-Fan RELAY normal?
YES
Is insertion of
CN71(BLUE) of MAIN PCB
normal?
YES
Is FAN ASS'Y normal?
YES
Check wire assembly & connection status
53
NO
Start Forced Operation
YES
Normal F-FAN
NO
Change DOOR S/W
NO
Check soldering / Change PCB
NO
Re-insert Connector CN71
NO
Check soldering / Change PCB
NO
Check soldering / Change PCB
NO
Check RELAY / Change PCB
NO
Re-insert Connector CN71
NO
Change or repair FAN

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