Recent content by Fred T

Thanks for responding, I should clarify that the thermostat keeps the reversing valve (O) active (cool mode), when the heat pump is not running, even when the thermostat is set to manual heat mode. In the winter the reversing valve switches to heat mode simultaneously with stage one (Y1)...

Do all thermostats switch reversing valve at every start? Greetings, My Climate Master thermostat on my Climate Master Geothermal Heat pump switches the reversing valve to heat mode every time the unit starts for heating. The reversing valve does not switch all summer. I had expected that...