ritter0404 Posted July 24 Report Share Posted July 24 Have a York 3.5 ton heat pump condenser. Last Friday the system went down and I tested and found the board to be the culprit. Replaced the board and not even 24 hours later same issue. 5 resistors under the relays are overheating and I can't figure out why. Unplugged the yellow wire on the y terminal and the bottom blue resistor cooled down. Checked voltage at t-stat wire and is 24 volts. Yellow wire has 24 volts on cool. Link to comment Share on other sites More sharing options...
hausdok Posted July 25 Report Share Posted July 25 Umm, Maybe you've mistaken this site for a bunch of HVAC guys? This is a home inspector's site. Link to comment Share on other sites More sharing options...
Bill Kibbel Posted July 25 Report Share Posted July 25 8 minutes ago, hausdok said: Umm, Maybe you've mistaken this site for a bunch of HVAC guys? This is a home inspector's site. Yeah, but Marc knows this stuff. Over current or surges would be my amateur guess. Intermitten failure of the transformer? 1 Link to comment Share on other sites More sharing options...
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