Samsung RS2530B Service Manual page 53

TROUBLE SHOOTING
3) When Comp Cooling Fan does not operate
Is COMP operating?
Is it COMP COOLING FAN ON
condition?
Is MICOM Pin #31
"HIGH"(5V)?
Is IC3 #17
"LOW"?
Is RELAY(RY77)
normal?
Is contact of Connector
CN71(ORANGE) normal?
Check wire assembled status of
FAN MOTOR
Start
YES
YES
Higher than (64.4 °F/18 °C)
Comp Fan
Between (55.4 °F/13 °C)
DELAY
Lower than (53.6 °F/12°C)
YES
YES
YES
YES
NO
Operate Forced Operation
NO
Stand by for FAN ON condition
Confirm FAN operating condition
Ambient Temp
and (62.6 °F/17°C)
NO
Check soldering / Change PCB
NO
Check soldering / Change PCB
NO
Check Relay / Change PCB
NO
Check contact of Connector
CN71 again
55
Range Load Operation Status
Comp Fan operates immediately
upon COMP ON
Comp Fan operates in 5 min after COMP ON
Comp Fan gets off regardless of COMP