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Service Manual 27
Troubleshooting Guide
Possible Trouble 2 The compressor does not operate.
Possible Trouble 3 The compressor always operate.
Is setting
Temp. set lower than Room
Temp.-0.5°C?
Is the voltage No.10
of IC01M 0V?
• Replace IC01M.
• Select the setting Temp. to lower Number.
• Wait 3 Minutes.
Does the Unit delay
for 3 minutes?
• Replace MAIN
PCB Ass'y.
Is the voltage N0.9 of
IC01M DC 12V?
• Check the RY-COMP.
• Check the wiring
Diagram.
NO
NO
NO
YES
YES
YES
YES
Is the wire connection of
RY-COMP OK?
• Check the RY-COMP.
• Connect LEAD Wire to
RY-COMP again.
NO
YES
NO