The Condenser Blades on My Air Conditioner Don't Work

Power

• If the unit fails to work, the power supply might have been compromised due to damage to the power line or a tripped circuit breaker. Inspect the power cord for frays or breaks. A tripped breaker might be due to a previous storm or power surge. Flip the breaker switch to the “On” position to restore power to the unit.

Thermostat

• A broken thermostat could hinder the condenser fan and/or the internal compressor. When the thermostat setting is lowered to a temperature that’s below the current room temperature, the condenser fan and the compressor turn on. If only the compressor turns on, not only is the cold air unable to enter the room, the unit is susceptible to a freeze. If the fan fails to turn on after the thermostat is lowered, the thermostat could be disconnected from the fan or damaged.

Debris

• It’s possible for debris to enter the unit’s fan compartment and prevent the fan from turning. Garbage, such as string or sticks, could be jammed in the fan motor or wrapped around the axle. Remove panels on the air conditioner unit to access the fan compartment. All debris should be cleared from the housing to prevent the fan motor from burning up.

Ball Bearings

• Improperly lubricated fan ball bearings could mean the difference between a stifled fan and one that runs smoothly. While the air conditioner panels are removed, test the fan by spinning it around a few times. The fan should rotate freely. If the fan fails to turn or you feel resistance, the bearings might require lubrication. Electric motor oil can be distributed through the ball bearing lubrication holes on the fan axle. After a few spins of the fan, the oil should work itself evenly among the bearings, providing an easy rotation.