Fan running backwards, but not all the time...ideas?

Old 06-28-14, 08:12 PM
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Unhappy Fan running backwards, but not all the time...ideas?


My compressor fan will run backwards from time to time..but when it reaches the desired temp and the thermostat cuts off and then cuts back on its 50/50 if the fan will run forward or backwards. If it runs backwards then I can turn the unit off and then back on and it will usually change directions. Any ideas?

Thanks in advance,


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Last edited by PJmax; 06-29-14 at 12:16 AM.
Old 06-29-14, 12:18 AM
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Welcome to the forums.

What is the make and model of your outside unit ?
It may be a defective start/run capacitor on the fan motor.
Old 06-29-14, 02:35 AM
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I have replaced the run cap with this problem before and had to return and replace the motor within a week.

Run caps are cheap and it would be worth trying only the cap first.

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