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