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Occurrence Possible Cause Solutions
Air conditioner will not operate • Wall plug disconnected. ✔ Push plug firmly into wall outlet.
• House fuse blown or circuit breaker tripped. ✔ Replace fuse with time delay type
or reset circuit breaker.
• Power control in OFF position. ✔ Turn power control to ON.
• Unit accidentally turned off by moving the ✔ Wait approximately 3 minutes.
thermostat to a higher temperature and then Listen for the compressor to start.
immediately turned back to a colder position.
• Unit turned off and then on too quickly. ✔ If air conditioner is turned off,
wait 3 minutes before restarting.
• Thermostat set too low for cooling. ✔ Adjust thermostat to higher setting for cooling.
Air from unit does not • Selector in fan position. ✔ Set mode to cool position.
feel cold enough • Thermostat set too warm. ✔ Set thermostat to colder temperature.
• Room temperature below 70°F. ✔ Cooling may not occur until room
temperature rises above 70°F.
Air conditioner cooling, • Outdoor temperature below 70°F. ✔ To defrost the coil, set selector to FAN position.
but room is too warm — Then, set thermostat to warmer position.
ice forming on cooling coil • Dirty air filter — air restricted. ✔ Clean filter. See “Cleaning the Air Filter” section.
behind decorative front To defrost, set selector to FAN.
• Thermostat set too cold for nighttime cooling. ✔ To defrost the coil, set selector to FAN position.
Air conditioner cooling, • Dirty air filter — air restricted. ✔ Clean air filter. Refer to“Cleaning the air filter”
but room too warm — section (above).
NO ice forming on cooling coil • Thermostat set too warm. ✔ Set thermostat to colder setting.
behind decorative front • Fan selector set on LOW. ✔ Set fan speed selector to HIGH
for maximum cooling.
Noise when unit is cooling • Air movement sound. ✔ The sound of rushing air is normal. If too loud,
turn selector to lower fan setting.
• Sound of fan hitting water-moisture ✔ This is normal when humidity is high.
removal system. Close doors, windows and registers.
• Window vibration — poor installation. ✔ Refer to installation instructions —
check with installer.
Water dripping inside • Improper installation. ✔ Tilt air conditioner slightly to the outside to
when unit is cooling allow water drainage. Refer to installation
instructions — check with installer.
Water dripping outside • Unit removing large quantity of moisture ✔ This is normal during excessively humid days.
when unit is cooling from humid room.
Troubleshooting Guide
MAINTENANCE
Air filter
Decorative front
15
Cleaning the air filter
EVERY TWO WEEKS: Clean the filter.
1. Turn Power OFF.
2. Remove the air filter by grasping the top corners and pulling
it up and out of the unit. (Fig. 15)
3. Wash in hot soapy water, rinse and shake dry.
4. Replace the filter with the front of the filter toward you.
5. To dry the filter thoroughly, run your unit in fan mode for a
few minutes. Remember, only a clean filter works properly
and delivers top efficiency at every setting.
Note: Failure to keep air filter clean will result in poor air
circulation. DO NOT operate without filter.This can render the
unit inoperative.
Proper use and care of your air conditioner will help ensure
longer life of the unit. It is recommended to have a
professional annually inspect and clean the coils and
condensate water passages. Expense of annual inspection is
the consumer’s responsibility.