Buzzing in the house? Heater capacitor?

[JohnA902]

We heard a buzzing in the house near the electric input from the pool. It stops when pool heater is off. Another post on this forum suggests that it’s the heater capacitor. But what confuses me is that the fan still spins. I just ran the heater and put my hand over the jet and it’s not hot so I think I found the problem.

Is this a pool heater capacitor issue?

 

[setsailsoon]

John,

Sounds possible and the capacitor isn't that hard to test. This is really way out of my area so I'll ping in a couple of our experts: @pooldv @mas985 @CJadamec

I hope this is helpful.

Chris

 

[JohnA902]

Thanks Chris, any other takers on this one? I might have to call for service I suppose if this is too tricky. I could probably change a capacitor myself but if it could be more then I don’t want to mess around.

 

[JohnA902]

I have a guy coming to look at it on Friday. Who knows.

 

[Bama Rambler]

Sorry I missed this before now, but hopefully you're going to get it sorted out.

Most buzzing or humming from electrical equipment that still operates is usually from a transformer. Most of the time it's a mounting screw that's came loose, but it can also be from loose windings or armature.

Capacitors can cause a buzzing sound, but once they start buzzing they usually don't last long.

 

[homegameroom]

I had a similar issue - the culprit for me was the transformer for the pool lighting (knocking 120 volts down to 12).

Can you turn off the breakers individually? That should help you flush out the issue.....

 

[JohnA902]

Very late follow up to this. HVAC guy came and replaced the capacitor and now it works. He tested everything though and didn’t think it was a capacitor at first. Been running well since.