...there is no temp reading. 1F80-51 Look for a tiny reset button in the area where you replaced the batteries. Very tiny button. Might need a pen point to press it. sounds like you need a new
...1F80-51...It won't call for heat from zone valve and thermostat keeps flashing 05. When I jump the red and white it kicks the zone valve open so I don't think there are issues with the valve. Does ...
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