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21 Room Air Conditioner
Troubleshooting Guide
Is Temp.
setting set lower than Room
Temp.-0.5°C?
Is the voltage No.10
of IC01M 0V?
• Exchange IC01M.
• Set the Temp. setting to lower Temp.
• Wait 3 Minutes
Is the Unit for 3 minutes
delay?
• Exchange MAIN
P.W.B Ass'y.
Is the voltage N0.7 of
IC01M DC 5V?
• Check the RY-COMP.
• Check the wiring
Diagram.
NO
NO
NO NO
YES
YES
YES
YES
Possible Trouble 2
• The compressor does not operate.
Is the wire connection of
RY-COMP all right?
• Check the RY-COMP.
• Connect LEAD Wire to
RY-COMP again.
NO
YES
Possible Trouble 3
• The compressor always operate.
• Exchange IC01M.
• Exchange IC01M.
Is the voltage NO.1 or 4
of IC01M DC 5V?
Is the voltage NO.13 or 16
of IC01M 0V?
• Check the RY-Hi or
RY-Lo.
•
Check the wiring diagram.
NO
NO
YES
YES
Possible Trouble 4
• Fan does not operate.