Panasonic CS-VZ9SKE Service Manual page 112

17.4.11 H38 (Brand not Corresponding)
Troubleshooting
Are the correct models of indoor and outdoor units connected?
Diagnosis Procedures and Cause
No abnormality is observed
An abnormality
is observed
112
Measures to be Taken
Fix the problem.
Replace the control boards of indoor
and outdoor unit.