Air Conditioner Operates, But Abnormalities Are Observed - Technibel KPAF124R5 Technical Data & Service Manual

5-4. Air conditioner operates, but abnormalities are observed

5-4-1. Operation does not switch from HEAT to COOL (or COOL to HEAT)
Remote control unit
may be defective
Measure resistance of
4-way valve's winding
COOL to HEAT
Check voltage between
terminals N and 6 (230V AC)
No voltage appears
Indoor PCB ass'y is defective
HEAT to COOL
Check voltage between
terminals N and 6 (230V AC)
Receiver in lamp ass'y
may be defective
OK Outdoor PCB ass'y is defective
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