9
The table below lists possible causes and solutions to some of the most common problems. Please review this information
before calling for service.
Symptom
Possible Cause
Possible Solution
Unit does not start.
• Power failure.
• Power to unit is OFF or disconnected.
• Circuit breaker may be tripped or
fuse may be blown.
• Remote control batteries may have
lost their charge or unit controller
may have malfunctioned.
• Wait for power to be restored.
• Turn on or reconnect power to the unit.
• Reset circuit breaker or replace fuse.
• Replace batteries in remote control.
Check controller for proper function.
Indoor fan is operating;
however, air is not cool.
• Temperature not properly set at con-
trol.
•
Compressor may be kept off by delay.
• Check temperature setting at control.
• Wait for delay to expire.
Unit cycles on and off frequently.
• Refrigerant charge is incorrect.
• Air in refrigerant circuit.
• Compressor malfuction.
• Improper voltage.
• System refrigerant circuit is blocked.
• Check for refrigerant leaks and prop-
erly charge system.
• Evacuate and properly charge system.
• Check compressor and replace, if ne-
cessary.
• Check with utility company to provide
proper voltage.
• Clear blockage.
Unit not cooling properly.
• Indoor and/or outdoor coil are dirty.
•
Air filter is dirty.
•
Air flow around indoor and/or outdoor
unit is obstructed.
• Doors and/or windows are open.
•
Direct sunlight is affecting indoor
tem perature.
• Heat source inside is placing a large
burden on the system.
• Suction pressure is low due to
possible refrigerant leak.
• Clean indoor and/or outdoor coil.
•
Clean or replace air filter.
• Remove obstructions.
• Close doors and windows.
• Use curtains or blinds to block direct
sunlight.
• Reduce burden of heat source.
• Check for refrigerant leaks and prop-
erly charge system.
Unit not heating properly.
• Doors and/or windows are open.
• Suction pressure is low due to
possible refrigerant leak.
• Close doors and windows.
• Check for refrigerant leaks and prop-
erly charge system.
Fan speed cannot be changed.
• Check the mode listed on the unit dis-
play. Fan speed cannot be changed
in the AUTO or DRY mode.
• Fan speed cannot be changed in
AUTO or DRY mode. Change mode to
COOL, FAN ONLY or HEAT.
Remote control signal is not
being trans mitted, even when
ON/OFF button is pressed.
• Batteries may have lost their charge. • Replace batteries.
The TEMP adjustment indicator
is not available.
• Check the mode listed on the unit
dis
play. Temperature cannot be
adjusted in the FAN ONLY mode.
• Change the mode to COOL, HEAT or
DRY.
Operation indicator disappears
from the display after a period
of time.
• Check to see if display reads TIMER
OFF.
• Timed operation is terminated at the
end of the TIMER period.
TIMER ON disappears from the
display after a period of time.
• Check to see if display reads TIMER
OFF.
• Timed operation is terminated when
time period has expired.
No tones being sounded by
indoor unit, even when ON/OFF
button is pressed.
• Infra-red receiver must be able to see
signal from remote control.
• Batteries may have lost their charge.
• Aim remote control infra-red transmit-
ter directly at receiver.
• Replace batteries.
