I have one zone in my house that seems to run the pump continuously, and that zone of the house will get overly warm. I have found that if I shut the system off and pull out the relay and re-insert, it will reset and work fine for a period of time (Not sure it's called a relay, but it's the parts with the clear plastic covers on them.) My first thought was just to try and replace this relay, but I wanted to get some of your thoughts first.
The Relay is a Taco 504 4 zone switching relay.
Thanks in advance.
Tried to post a picture, and a link to the picture, but not enough posts yet.