How To Fix Ac Unit S Fan Not Spinning 5 Common Issues Photo: istockphoto . if the ac unit fan is not spinning, the first thing to check is the circuit breaker. take a look at the circuit breaker associated with the ac unit and see if it’s been. A dead capacitor is by far the most common reason why the condenser ac fan stops working. this is a culprit in more than 30% of all ‘central air fan not spinning’ issues. ac capacitor is a cylindrical device you will find in the outdoor unit. it’s about the same size as your hand, or a bit smaller.
5 Steps To Identify And Fix Air Conditioner Fan Not Spinning 1. power supply problems. one of the most straightforward reasons why your ac fan isn’t spinning could be due to a power supply problem. this might include a tripped circuit breaker, a blown fuse, or a loose electrical connection. solution: start by checking your circuit breaker panel to see if the breaker that controls your ac unit has tripped. Burnt out ac fan motor. there are many reasons why an ac fan motor may burn out, such as over use, poor maintenance, or an obstruction that is preventing the fan from operating properly. once the fan motor burns out, the fan will not longer be able to spin. hvac technicians can fix this problem by replacing the fan motor and inspecting the unit. Build up of dirt, rust, or sludge. cause. dirt by itself can lead to a bad ac fan motor. dirt on the indoor blower or the outdoor fan can unbalance the blades and cause bad bearings, warped shafts, or cause the motor to overheat and trip the breaker. dirt can also clog up a drain line. 6. loose or broken belt. cause: some older ac units use a belt driven fan. the belt connects the fan motor to the fan, which causes the fan to spin and circulate air. if the belt is loose or broken, the ac fan will stop working. solution: turn off power to the unit and remove the grille to access the fan and motor.
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