Aqua logic SWG transformer HOT and humming when off

[caycarem]

Yeah thanks James, I guess it could be the transformer or the board, but I’d also suspect it’s a heat issue that caused this problem somehow. The panel gets direct sun from around 2-5pm. I checked at 6pm yesterday, noticed a few things:

- the humming sound (and hot)was present even though the pump and swg stopped at 5:30pm. Noise stopped when I pressed on the transformer slightly, and resumed when released. Something in there must be vibrating, not sure which part. Screws are tight. Weird thing is, if I reboot the aqua logic, the humming goes away. Could a board circuit go haywire when hot and stay that way until reboot?

-I tried to turn on the pump but it gave me “check system” light and “pool comm error”. On the pump was some “poor comm signal connection” message. First time i’ve seen these, not sure why this error. Rebooted the aqualogic, no go. Rebooted the ecostar pump and everything back to normal, no more humming.

today will be ~8 degree higher (84F), I am taking out the inside cover in hope the board/transformer would have more room to release the heat. Will see how this will go in the PM.

 

[JamesW]

Ok. Maybe check out the price of a new transformer and replace it if necessary.

Sometimes, these things are hard to diagnose precisely.

There might be more than one problem that makes it harder to diagnose.

 

[caycarem]

I ended up bending the cover plate to vent the top corners of the box and that seems to help reduce heat near the transformer. Posting this in case it might help someone.

 

[ajw22]

I ended up bending the cover plate to vent the top corners of the box and that seems to help reduce heat near the transformer. Posting this in case it might help someone.

Depending on your local ecology I think you will get insects and maybe other critters in the box. I would get some window screen material you can put over the openings.

 

[caycarem]

Depending on your local ecology I think you will get insects and maybe other critters in the box. I would get some window screen material you can put over the openings.

Good point, not too many 🕷 in my area, but there’s also the outside swing door/box cover so nothing big can get inside.