Air Conditioner Operates, But Abnormalities Are Observed - Technibel MCAF92R5TA Technical Data & Service Manual

6-4 Air conditioner operates, but abnormalities are observed

6-4-1 Operation does not switch from HEAT to COOL (or COOL to HEAT).
•
Remote control unit may be
detective.
•
Measure resistance of 4-way
valve's winding
COOL HEAT
•
Check voltage between terminals
No.1 and N, must be 230 VAC
•
Indoor PCB Ass'y is defective
HEAT COOL
•
Check voltege between terminals
No. 1 and N, must be 0 Volt
OK
No voltage appears
Reciver in lamp Ass'y may be
detective.
Check wiring connection
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