2) Remove the grille and filter and unscrew the metal case (taking care not to damage the coil’s fins).
3) Wash the filter thoroughly or replace it with a new filter; most filters are readily available at most appliance stores.
4) Using a vacuum with a soft brush attachment, clean the coil’s fins.
5) Then, from the fan side, spray water back through the fins (protect the wiring and the motor with plastic).
6) Clean the unit up with a rag, making sure all drains that allow condensed water to drip away from the unit are open. Allow it to dry thoroughly.
7) While you have the unit apart, lubricate the motor according to your owner’s manual.
8) Finally, reassemble and reinstall the unit.
Window or Room Air Conditioner Doesn’t Turn On
Window and room air conditioners draw a lot of electrical power, which can lead to less than peak performance or even complete failure. If your room air conditioner doesn’t turn on:
1) Be sure the unit is plugged in and turned on.
2) Check that the outlet works by plugging in a light that works (only for standard-voltage models—do not plug a light into a 220/240- volt receptacle).
3) If the light doesn’t go on, the circuit has probably overloaded—check the electric panel or fuse box and reset the breaker or replace the fuse.
4) If the light works, it’s likely that the air conditioner’s switch is faulty or the thermostat needs adjustment or repair.
5) Be sure the thermostat is set to “cool” and below room temperature.
6) Refer to the owner’s manual for thermostat repair. If repairing the thermostat doesn’t solve the problem, unplug the unit and call an air conditioner technician.
