The electronics panel in our A/C air handler keeps getting condensation on it. The blower motor moves cool air behind the panel, and eventually enough water collects on the electronics - namely the control board - that the blower motor continuously starts up and shuts off as if it were a relay problem. Once I dry it off, it runs fine.

It's not a perfectly sealed unit. There are a few small air gaps where the handler access doors attach for example.. but is there another reason why this thing would be building up this much moisture inside?

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Posted by wickowick

Head of Island

Member since Dec 2006

45794 posts

Posted on 9/11/16 at 8:36 am to jmcwhrter

The duct work prior to the air handler might have gaps, causing it to pull warm humid air that is contributing to the condensation

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Posted by Bullfrog

Institutionalized but Unevaluated

Member since Jul 2010

56166 posts

Posted on 9/11/16 at 8:38 am to jmcwhrter

Strange issue. Sounds like it needs to be better insulated and not have any gaps that I assume are pulling in attic air.

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Posted by Cajun Invasion

Abbeville, Louisianna

Member since Jan 2012

1799 posts

Posted on 9/11/16 at 9:04 am to jmcwhrter

Check to see if your return air duct is sealed good, don't want to be sucking in attic air. Also could be a dirty evaporator coil not allowing the blower to push the air throw properly. Could make the condensation on coil to splash around inside.

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Posted by jmcwhrter

Member since Nov 2012

6551 posts

Posted on 9/11/16 at 9:43 am to wickowick

quote:
The duct work prior to the air handler might have gaps, causing it to pull warm humid air that is contributing to the condensation

What is the best way to check for gaps in the return duct work?

Also there is very little evidence of condensation anywhere else inside the handler.. it's almost exclusively inside the "cabinet" where all of the electronics are

This post was edited on 9/11/16 at 9:45 am

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