20
7 Troubleshooting
7.1 Troubleshooting Guide
Air conditioner does
not function at all.
Wall plug is disconnected.
Insert plug firmly into proper wall outlet.
House fuse blown or circuit
breaker tripped.
Replace fuse with time delay type or reset
circuit breaker.
Press the RESET button on the power cord.
Turn unit ON and set to desired setting.
Ribbon cable to control panel is
disconnected.
Remove front grill and reconnect cable.
Loose or disconnected wiring
on main PCB.
Remove front grill and outer shell. Check all
connections to the PCB and reconnect any
loose or disconnected leads.
Air from unit does
not feel cold
enough.
Room temperature is below
62℉ (17℃).
Cooling will not occur until room temperature
rises above 62℉ (17℃).
Temperature sensor behind the
front grill and air filter is
touching the cold evaporator.
Realign sensor so it does not touch the
evaporator coil. It should only be sensing the
air temperature leaving the evaporator.
Set temperature is too high.
Set to a Lower temperature.
Compressor is shut-off by
changing modes.
Wait approximately 3 minutes and listen for
compressor to restart when set in COOL
mode.
Air conditioner
cooling, but room is
too warm - ice
forming on cooling
coil behind front grill.
Outdoor temperature below
62℉ (17℃).
To defrost the coil, set to FAN ONLY mode.
Clean filter. Refer to Installation and Cleaning
section. To defrost, set to FAN ONLY mode.
Thermostat set too cold for
night-time cooling.
To defrost the coil, set to FAN ONLY mode.
Then set temperature to a Higher setting.
Air conditioner
cooling, but room is
too warm - NO ice
forming on cooling
coil behind front grill.
Dirty air filter- air restricted.
Clean air filter. Refer to Installation and
Cleaning section.
Temperature is set too High.
Set to a Lower temperature.
The directional louvers on the
front are positioned improperly.
Position louvers for better air distribution.
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