19
TROUBLESHOOTING
PROBLEM
CAUSE
SOLUTION
Air conditioner does not
power on
• Unit is not plugged in.
• No electric current to outlet.
• Internal safety device has tripped.
• Plug unit in.
• Check electric breaker box for a
trip.
• Wait 30 minutes for safety de-
vice to reset.
Air conditioner works for a
limited amount of time
• There are bends in the exhaust
hose.
• Something is blocking the air
from being discharged.
• Position the air exhaust hose
correctly, keeping it as short
and free of curves as possible.
• Check and remove anything
obstructing air discharge.
During operation, there is an
unpleasant smell in the room
• Air filter is dirty.
• Remove air filters, clean and
re-install.
Air conditioner does not
operate after restarting the
unit
• The internal compressor safety de-
vice prevents the unit from being
restarted until three minutes have
elapsed since it was last turned off.
• Wait for compressor to turn on.
The control panel display
shows Lt/PF/Ft codes
• The unit has a self-diagnosis
system to identify the
malfunctions.
• See page 20 to diagnosis the
code.
