Mitsubishi PUHZ-SHW80YAA Service Manual page 28

Symptoms: "PLEASE WAIT" is kept being displayed on the remote controller.
Check the display time of "PLEASE WAIT"
after turning on the main power.
6 minutes
or more
Check the LED display of the
outdoor controller circuit board.
Are any check codes
displayed on the LED?
NO
OCH651
Diagnosis flow
How long is "PLEASE WAIT"
kept being displayed on the
remote controller?
2 to 6
minutes
Are any check codes
displayed on the
remote controller?
YES
YES
2 minutes
or less
"PLEASE WAIT"
will be displayed
during the start-up
diagnosis after turning
on the main power.
NO
outdoor connecting
wire
outdoor connecting
wire (S3)
controller board
controller circuit
board
controller board
controller
Inspection method and
Cause
troubleshooting
The start-up diagnosis will
be over in around 2 minutes.
action table" in order to
solve the trouble.
errors, the display of
remote controller may not
match the LED display of
the outdoor unit.