Panasonic WH-ADF0309J3E5CM Service Manual page 254

25.2.8 Brand Code Not Matching (H38 / L02 / H38)
Malfunction Caused:
1 Indoor and outdoor brand code not match.
Brand code not match
Check the brand of indoor and outdoor unit both Panasonic?
Change PCB outdoor
YES
254
For safety reason and to prevent
component breakdown, always switch
Caution
off the power before remove and
connect the component.
NO
● Use only Panasonic units.
● Change to Panasonic unit.