Forum Discussion
maxum1989
Sep 20, 2020Explorer II
So I checked the ECO and thermostat for continuity. Seems as good. I took off the two wires, checked continuity through the ECO from one side to the other. Then did the same to the thermostat and then had continuity from top ECO to the thermostat. So am I correct to assume the board is the only thing left to check? Is there anything that can be done to the board to check it?
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