If your ac compressor is not working, but the fan is running, someone might have unknowingly set the wrong temperature on the thermostat. In such cases, the room may be already cold enough, so the compressor is not required to operate.
Why is my AC compressor fan not working?
If the fan doesn’t start running, you may have a bad fan motor. If you have difficulty getting the blades to turn, there may be debris wrapped around the fan axle, or the motor bearings may be dirty or jammed.
What causes a condenser fan to not turn on?
Capacitor Problems
There are several reasons the capacitor of your HVAC unit can fail. These include overheating, running too long, power surges, and age. When the capacitor fails, the condenser fan will no longer rotate.
Should the condenser fan run when the compressor is running?
On some compressor / condenser units the fan may run before or after the compressor motor has shut off, but it should eventually stop. If it doesn’t there is a control or wiring problem to be found and repaired.
How do I know if my AC compressor fan is bad?
5 Signs That Indicate a Failing AC Fan Motor
- The fan won’t start even though the AC is on. …
- The fan continues to run, even when shutting off the AC. …
- The fan is on but rotating very slowly. …
- The fan runs intermittently. …
- There’s a rattling or buzzing noise coming from the condenser unit when the fan is turned on.
Will AC fan run if compressor is bad?
Inappropriate maintenance of the AC compressor sometimes can lead to its malfunctioning. An air conditioning unit can still appear to run with a malfunctioning HVAC compressor. AC unit is equipped with a pair of fans, which still can run even in case of a malfunctioned compressor.
How do I reset my outside air conditioner fan?
How do you reset your AC unit?
- Turn off your air conditioning system using the thermostat. …
- Search for the breaker box. …
- Shut off your AC unit at the breaker. …
- Wait at least a full minute before switching the breaker back to the “on” position.
- Wait for 30 minutes before turning your unit back on at the thermostat.
How do I test my AC compressor fan motor?
Signs and Symptoms of a Bad AC Fan Motor
- The fan won’t start even though the AC is on.
- The fan won’t stop, even when you shut the AC off.
- The fan turns on, yet the blades are rotating very slowly.
- There’s a rattling noise coming from the condenser unit when the fan is turned on.
How do you know if your fan motor is broken?
Be aware of the following signs and symptoms of a bad AC fan motor.
- AC Fan Doesn’t Start. Even though you have the AC turned on, the fan does not start.
- AC Fan Doesn’t Stop. …
- Slow Rotating Blades. …
- Outside Fan Blades Are Still. …
- Rattling, Humming, and Buzzing Noises. …
- AC Runs Intermittently. …
- No Cold Airflow.
How do I know if my evaporator fan motor is bad?
Listen for a squeal or chirp sound.
If the evaporator fan motor is going bad, it may still run while making a high pitched sound that may come and go. If you hear that sort of sound, something may be caught in the fan blades or the motor may be dying.
When should AC fan turn on?
Your HVAC fan should turn on and off with the rest of your heating and cooling system. It’s normal for the fan to kick on a couple of minutes before heating starts or to stay on for a couple of minutes after cooling stops, but your fan shouldn’t run for hours on its own.
What controls the condenser cooling fan?
The condenser fan relay is the electronic relay that controls the power to the AC condenser cooling fan. When the relay is activated the AC condenser fan is switched on so that it can keep the AC condenser cool.
Should fan be on with AC?
Answer: You can— and should— run your A/C and ceiling fan together. Doing so can help lower your cooling costs each month, but only if you’re using them right.
