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Thread: Pump hot to touch and will not power on: My solution

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    Pump hot to touch and will not power on: My solution

    Quote Originally Posted by epxroot View Post
    Came home today from work and my pump was not running. I went to look at it, flipped the switch off and back on and nothing. Felt the pump and it was very hot, I couldn't keep my hand on it for longer than 4 to 5 secs. We had a storm today and I know that that there were power issues in my area, which from what I have read could have lead to it over heating. I have read that some pool pumps power off when getting to hot, does anyone know if all pool pumps are designed this way. I have a very old pump and it has been running like a champ 20 to 24hrs per day for the last month with no issues.
    I had the same issue today. The pump shut off and the exterior metal housing was very hot to the touch. After cooling off for an hour, it would allow itself to be turned on and then run for 2-3 seconds and shut off again and become very hot again. So something was definitely wrong with it. But the fact that it started at least was telling me that there was power supply to the pump and the issue was within the pump itself. My pump model is Pentair WF-28, 2 hp. The method for fixing it was:

    1. Watch a bunch of videos on Youtube on pool pump troubleshooting.
    2. Remove the rear housing of the pump motor and turn the pump rotor rod by hand in both directions to rule out a bad bearing or something being stuck in the movement mechanism.
    3. Remove the top cover housing the run capacitor (which is a silver cylinder with 2 nipples on top) and discharge and remove the capacitor.
    4. Test the capacitor using a digital multimeter (again watched how to do it on Youtube).
    5. Buy a new capacitor at my local pool store and replace the old one. The local store sold capacitors for around $35. Same ones are under $10 on Amazon, but I did not want to wait for delivery.

    And the pump is back in business. The guy at the pool store said that the majority of the time when a pump stops working it is due to a bad capacitor. So pool pumps are very similar to HVAC systems in that aspect of troubleshooting.
    Anyhow, a capacitor is very easy to access and replace. And if you do it yourself, it saves a lot of money compared to calling for service.

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    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Pump hot to touch and will not power on.


    Welcome to the forum. Very nice first post.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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