Mitsubishi Electric PUHZ-SHW80VHA Service Manual page 48

S y mp toms: " P L E A S E W A I T " is kep t b eing disp lay ed on th e remote c ontroller.
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
OCH526C
Diagnosis flow
2 minutes
or less
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?
Y ES
Y ES
Cause
"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
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.