Air Conditioner Fan Not Spinning Making Noise

Explanation on how to fix an air conditioner unit or outdoor heat pump fan that is not working due to a bad capacitor.

Air conditioner fan not spinning making noise.

Check the float switch. If the fan blades don t spin at all it s likely the condenser fan is not working and possibly burnt out requiring replacement. That s your cue to turn the system off and call the pros to repair. If the compressor is working but the fan blades are not spinning the motor is faulty.

Condenser fan motor failure. The evaporator coil sits inside your home within the air handler unit furnace or fan coil pulling heat and humidity from indoor air as it passes through. Another problem that may cause your air conditioner fan to not spin might be a belt that has either broken or became loose. Do not use any kind of conductive metal or material to do this.

Here s an easy way to test if the fan s capacitor is bad. Squealing if your air conditioner is making a squealing sound the belt connecting the motor to the blower may have slipped or the bearings on your condenser fan s motor may be worn down. Here s what to check if your hvac system is making an unfamiliar sound. If your ac has stopped blowing air has weak airflow or you hear unusual noises do a quick inspection of the fan motor.

A rattling noise can mean that your air conditioner is starting to deteriorate and some of its parts are loosening. Check out the noise my condenser fan motor is making after years of neglect. Your first line of defense is to check for loose screws or bolts in the unit s casing. Check to make sure your breaker has not tripped.

Slide a long thin wooden stick through the fan grate and gently push one of the blades to try to get the fan spinning. Clanking or banging if you re hearing these sounds from your unit the issue is usually the blower assembly or the motor. This is why you cover it in the winter and make sure it is greased well. Run capacitor is weak or has failed.

The hvac s fan motor could be seized unable to spin but power is still going to it creating resistance that produces a loud and noticeable hum. Another culprit could be the fan which rattles when loose. The contactor may be faulty. Listen for a humming sound that tells you the ac compressor is functioning.

If the motor is running you can get y. Most of the air conditioning systems that use belts are outdated units. In either case we recommend calling a professional hvac technician to diagnose and remedy the problem. If your air conditioner make a loud hum check the following.

Air conditioner fans not working can be a sign of a frozen evaporator coil. The dual run capacitor is defective. Next look through the vents at the top of the unit to see the fan. If your air conditioner fan is not spinning the problem could be a faulty belt.

The electrical contractor in the equipment can also make a chattering sound which can damage other components including the compressor if allowed to continue. Another cause could be twigs or leaves that have clogged your system. You may want to think about replacing the whole system. Six reasons your air conditioning fan may not be running.

So if the capacitor attached to your fan motor is bad the fan won t start spinning.