Mitsubishi Electric PUZ-WZ50VAA Service Manual page 48

Symptoms: LED display is kept being blinked on the remote controller
Check the abnormal code by
connecting an optional part "A-Control
Service Tool (PAC-SK52ST)" to
connector CNM on outdoor
controller board.
Check code
display?
YES
OCH816
Diagnosis flow
No
Cause
• Troubles at Indoor
unit.
• Abnormality at Fixed
speed circuit.
48
LED display of the
remote controller
Inspection method and
troubleshooting
• Check trouble
conditions by referring
to service manual of
indoor unit.
• Refer to "9-2. SELF-
DIAGNOSIS ACTION
TABLE".