Troubleshooting
The following table describes some common problems that may be encountered with a room air conditioner. Each problem is accompanied by several possible causes and solutions.
Problem
Unit will not turn on.
Unit repeatedly blows fuse or trips breaker.
Possible Cause
•Power cord unplugged.
•Blown fuse or tripped breaker.
•Electrical power low ("brown out").
•Electrical power outage.
•Compressor in
•Other devices sharing circuit results in circuit overload.
•Incorrect fuse size or type.
•Incorrect circuit breaker size.
•Extension cord used to provide power.
Solution
•Ensure power cord is firmly plugged into outlet.
•Replace blown fuse; reset tdpped breaker.
•Low voltage protection prevents operation if supply voltage drops below 90 VAC for 115 volt units;
171 VAC for 230 volt units. Contact local electric utility if voltage is low.
•Contact local electric utility.
•Wait 3 minutes for compressor start.
•Disconnect other devices or move
devices to different circuit.
NOTE: Air conditioners labeled "Use on Single Outlet Circuit Only" require separate, dedicated, circuit.
•Ensure fuse is correct size. Unit requires
•Ensure circuit breaker is correct size.
•Do not use an extension cord with
this air conditioner. If power cord on air conditioner does not reach outlet
have qualified electrician move out- let or install new outlet closer to unit.
Unit does not | • Dirty air filter. |
adequately cool room
or area.
•Optional charcoal air filter (if used) clogged.
•Room or area not sealed.
•Vent Control in EXHAUST position.
•Airflow to or from unit blocked.
•Unit impropedy sized for room or area.
•Remove and clean air filter.
NOTE: Do not operate air conditioner with filter removed.
•Replace charcoal filter (if desired).
NOTE: Optional charcoal filter can- not be cleaned. Filter must be
replaced after three months use.
•Close all doors and windows in
cooling area. Close all air vents and ducts in area.
•Vent Control should be in CLOSED
position whenever air conditioner is in cooling mode.
•Remove any obstruction to airflow from air discharge vent or return air vent on unit.
•Reduce cooling area (close doors or otherwise isolate area).
NOTE: See Sizing Instructions for information on correctly sizing room air conditioners.
