60
Diagnostics
"Check out the F-FAN with the Forced Operation selected"
1. F-Room FAN, R-Room FAN and COMP COOLING FAN remains OFF while COMP is off.
(R-FAN can be on with the defrost function.)
2. When Comp is ON,R-FAN does not always remain ON (including Forced Operaation) and
when R-Room temp reaches to set temp,R-FAN remains OFF.
3. When R-Room &F-Room are closed after being opened,each FAN starts up with a delay time
(5sec ~1min) immediately.(Comp ON condition)
Note
1) When F-Room FAN(F-FAN)does not operate
13-4) When FAN does not operate
NO
YES
NO
NO
NO
NO
Start Forced Operation
Is it during Forced Operation?
Does Fan
operate with DOOR S/W
presses? (Including
Delay Time)
Is DOOR S/W normal?
Is the voltage
of MICOM #42 5V (Close
condition)?
Is insertion of
CN71
PIN(YELLOW)of MAIN
PCB normal?
Is voltage
of MICOM Pin #27
"HIGH"(5V)?
Start
YES
Normal R-FAN
Change DOOR S/W
NO
Check soldering /Change PCB
YES
Re-insert ConnectorCN71
YES
Check soldering /Change PCB
YES
YES
NO
Is voltage of IC70 #14 “LOW”(0.7V)?
Check IC70 /Change PCB
NO
Is F-FAN RELAY(SSR71) normal?
Check RELAY /Change PCB
YES
Check wire assembled status/Change MAIN PCB ASS’Y
Freezer Door Switch input #42
• Refer to the list (15-1)
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