Read Panasonic CS-MZ20UD3EA Service Manual online
87
16.4.19 F11 (4-way Valve Switching Failure)
Malfunction Decision Conditions
When indoor heat exchanger is cold during heating (except deice) or when indoor heat exchanger is hot during
cooling and compressor operating, the 4-way valve is detected as malfunction.
Malfunction Caused
Indoor heat exchanger (pipe) thermistor
4-way valve malfunction
Troubleshooting
* Check gas side pipe – for hot gas flow in cooling mode
Click on the first or last page to see other CS-MZ20UD3EA service manuals if exist.