E20 No Indoor Unit In Automatic Address Setting - Panasonic 2WAY Multi Technical & Service Manual

E20 No Indoor Unit in Automatic Address Setting

(Cannot be detected when the water heat exchanger unit is connected.)
Error detection method
An error is determined when an indoor unit is not recognized at auto-addressing start up or upon turning the
outdoor unit power ON.
• Indoor unit address is not properly assigned.
• Indoor unit power is OFF.
Troubleshooting
1
1-1 Indoor unit address properly assigned?
Power
supply,
wiring
1-2 Is the indoor unit power ON?
The indoor/outdoor control wire may not be connected between the indoor unit and outdoor
1-3
unit. Check wiring connections on indoor/outdoor control wire.
IV–54
Yes 1-2
No Set address
Yes 1-3
No Turn power ON