Mitsubishi Electric PCH-2GKHA Service Manual page 56

7. OTHER TROUBLES AND CAUSES
Vanes do not work.
Unit stops after 5 to
20 seconds operation
Air discharge display
is OFF and button
does not operate.
In this case, remote
controller is normal.
Power ON/OFF button
is not available.
8. MR. SLIM/LOSSNAY INTERLOCK OPERATION
<Symptoms that are not malfunctions>
If any of the following symptoms occur, they are not malfunctions.
LOSSNAY control switch does not work.
LOSSNAY air speed can not be controlled in interlock
operation.
For LOSSNAY, troubleshooting refer to the LOSSNAY technical & service manual.
56
Vane motor does not work.
Connector is poorly connected.
Vane motor is poorly assembled.
Indoor controller board is damaged.
Protection function is working.
Indoor controller board
deems the auto vanes
are not attached to the
unit.
Horizontal anlgle can
not be detected.
Beep sound is heard,
but display is turned
OFF.
Beep sound is not heard,
and display remains
OFF.
"CENTRALLY CONTROLLED" is displayed.
Symptom
Vane motor is damaged.
Refer to check code on remote controller display.
See page 51.
Indoor controller is
damaged.
Dip switch setting is
wrong.
Indoor controller is
damaged.
Vane motor is
damaged.
Auto vane is wired after
power is turned to ON.
Indoor/outdoor
connecting wire is
connected incorrectly.
Indoor/outdoor
connecting wire shorts.
Compressor protector is
damaged.
Deicer is broken.
Remote controller is
damaged.
Transmission wire is
poorly connected
LOSSNAY control switch can not work during interlock
operation.
LOSSNAY control switch is effective only while Mr. SLIM is not
operating.
LOSSNAY fan speed is fixed to HIGH during interlock
operation.
LOSSNAY fan speed LOW/HIGH can be switched only during
LOSSNAY individual operation with the LOSSNAY contorl
switch.
Vane motor is damaged.
Poorly connected
Disconnected
Transmission wire is
damaged.
Connector is poorly
connected.
Indoor terminal block is
poorly connected.
Remote controller
terminal block is poorly
connected.
Cause