Mitsubishi PLH-3AK.UK Technical & Service Manual page 63

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 opera-
tion.
For LOSSNAY, troubleshooting refer to the LOSSNAY technical & service manual.
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 angle 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.
Vane motor relay is damaged.
Refer to check code on remote controller display.
See page 54.
Indoor controller is
damaged.
Dip switch setting is
wrong.
Indoor controller is
damaged.
Vane motor is dam-
aged.
Auto vane is wired after
power is turned to ON.
Indoor/outdoor connect-
ing wire is connected
incorrectly.
Indoor/outdoor connect-
ing wire shorts.
Compressor protector
is damaged.
Outdoor controller
board is defective.
Remote controller is
damaged.
Transmission wire is
poorly connected
LOSSNAY control switch can not work during interlock opera-
tion.
LOSSNAY control switch is effective only while Mr. SLIM is not
operating.
LOSSNAY fan speed is fixed to HIGH during interlock opera-
tion.
LOSSNAY fan speed LOW/HIGH can be switched only during
LOSSNAY individual operation with the LOSSNAY control
switch.
63
Vane motor is damaged.
Transmission wire is
damaged.
Connector is poorly
connected.
Indoor terminal block is
poorly connected.
Remote controller ter-
minal block is poorly
connected.
Cause