Mitsubishi Electric PKH18FK Technical & Service Manual page 58

7. OTHER TROUBLES AND CAUSES
t
Vanes do not work.
Unit stops after 5 to
20 seconds operation
t
Air discharge display
is OFF and air dis-
charge UP/DOWN
button does not oper-
ate.
In this case, remote
controller is normal.
t
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.
58
Vane motor does not work.
Limit swtich 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
t
t
Refer to check code on remote controller display.
t
See page 52.
t
Indoor controller is
damaged.
Dip switch setting is
wrong.
t
Indoor controller is
damaged.
Vane motor is dam-
aged.
Vane motor limit switch
is poorly connected.
Auto vane is wired after
power is turned to ON.
t
Indoor/outdoor connect-
ing wire is connected
incorrectly.
Indoor/outdoor connect-
ing wire shorts.
Compressor protector is
damaged.
Deicer is broken.
t
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 operat-
ing.
LOSSNAY fan speed is fixed to HIGH during interlock operation.
LOSSNAY fan speed LOW/HIGH can be switched only during LOSS-
NAY individual operation with the LOSSNAY contorl switch.
Vane motor is damaged.
Vane motor relay is damaged.
Limit switch is damaged.
The size of the cam is wrong.
t
Vane motor limit switch
is damaged.
Vane motor is dam-
aged.
t
Poorly connected
Disconnected
t
Transmission wire is
damaged.
Connector is poorly
connected.
Indoor terminal block is
poorly connected.
Remote controller ter-
minal block is poorly
connected.
Cause