How to troubleshoot an AC motor in a car?
Rotate the motor’s shaft and feel for rubbing. Check the source of power, overload, fuses, controls, etc.. 2. Motor Has Been Running, Then Fails to Start Replace the fuse or reset the breaker. Check for leaks through the coils. If leaks are found, the motor must be replaced. Inspect to see that the load is free.
Why does my AC fan keep running after I Turn Off the AC?
The opposite problem can also occur, i.e. the fan continues to run even after switching off the air conditioner. In some cases, this is caused by a malfunctioning thermostat. Replacing the thermostat will have it up and running again. If the thermostat isn’t the issue, the most likely problem is a stuck relay switch.
When do you Know Your AC fan motor is bad?
If the compressor is working but the fan blades are not spinning, the motor is faulty. That’s your cue to turn the system off and call the pros to repair the AC fan motor. Replacing an HVAC motor is a job that can be done quickly once the problem is identified.
What to do if your air handler fan stops running?
Pull the cover off the thermostat, then remove the mounting screws holding the thermostat to the sub-plate, and pull the thermostat off. If the fan stops running, the thermostat is the problem and should be replaced.
What causes an air conditioner motor to stop working?
Another common problem that can be caused by air conditioner blower motors is the formation of ice, or icicles, on, or around the air conditioner unit and vents.
What to do if your a / C fan won’t stop running?
1. At the room thermostat: the FAN-AUTO-OFF or FAN ON/OFF switch on the room thermostat should be checked. The fan control should be set to AUTO. You can try turning the switch to OFF too. Other snafus such as a shorted thermostat wire can also cause the A/C or warm air furnace fan to run continuously.
What to do if your air conditioner won’t turn on?
There is usually a fan limit control in the air handler that turns the fan on or off depending on air temperature sensed in the plenum just above the heater’s heat exchanger. If the fan won’t stop on your unit look for one of the controls described above on this page and that can be used to manually turn the fan on for continuous operation.
Why is my air conditioner blower fan not working?
Like all moving parts and similar to stand alone fans, the blower motor and blower fan is susceptible to wear and tear, as well as damage, all of which could result in the air circulation being restricted, or possibly not working at all.