ritter0404

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.