Air Conditioner Operates, But Abnormalities Are Observed - Technibel GR120R Technical Data & Service Manual

8-8 Air conditioner operates, but abnormalities are observed

8-8-1 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
COOL4 HEAT
•
Check voltage between terminals
No.1 and N, must be 230 VAC
•
Indoor PCB Ass'y is defective
HEAT4 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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