One last update. After all it was not a safety switch. The technician
looked at the back of the control board and one of the metal points was
partially damaged apparently to vibration over the years by not enough
to completely be out service. Very bi...
This might help. Today we tested power coming from all thermostat wires
-dead. Then we uncovered hvac unit cover and tested the panel and all
checks out. Flame sensor and the fuse were good. However, this only can
be detected when thermostat is dead ...
I have the same issue after ten years of using second generation nest
seamlessly. I bought new one after old one started showing no power
error code. The same thing is happening. I had hvac person inspect the
unit (regular force air electric) and nes...
