Sunday, May 21, 2017

Air exchanger turning on and off rapidly – any theories?

I have a Venmar ER40200 in the basement of the house I just moved into. It usually seems to work fine, but occasionally will get into a pattern of cycling on/off rapidly – staying on for sometimes as little as a second before shutting off, only to come back on a few seconds later. It seems to keep this up indefinitely (I usually shut it down with the wall control for a few hours when I notice this happening). I've never had a house with an air exchanger in it before, so I'm a bit clueless – but I assume this can't be good for it. Any ideas what could cause this?

submitted by /u/omnimoogle
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