61
Diagnostics
2) When R-Room FAN(R-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 the
R-Room temperature a
Fan-On condition?
Is DOOR S/W normal?
Is the
voltage of MICOM #43 5V
(Close condition)?
Is insertion of
CN71(W/BLUE)of MAIN
PCB normal?
Start
YES
Normal R-FAN
Check temp conditions,
Select Super Cool
NO
Change DOOR S/W
YES
Check soldering /Change PCB
YES
Re-insert ConnectorCN71
NO
Is voltage
of MICOM Pin #30
"HIGH"(5V)?
Check soldering /Change PCB
YES
YES
NO
Is voltage
of IC70 #17
“LOW”(0.7V)?
Check IC70 /Change PCB
YES
NO
Is R-FAN RELAY
(SSR72) normal?
Check RELAY /Change PCB
YES
Check wire assembled status/
Change MAIN PCB AASS’Y
Freezer Door Switch input #43
• Refer to the list (15-1)
