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10.3 Diagnostic chart
After energizing, no indicator is lighted and the air conditioner can't be operated.
After energizing , the air conditioner can not be operated .
Check if AC 220V power supply outputs to indoor PCB .
Check if AC 220V exists at the primary coil of transformer.
Check if AC 14.5V exists at the secondary coil of transformer .
Take off the secondary plug of transformer , and then check if AC
14.5V exists at the secondary coil of transformer.
25
Yes
YES
No
No
Indoor PCB is defective.
No
Indoor PCB is defective.
Yes
Yes
Indoor PCB is defective.
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