I have a GE Weathertron thermostat that I am replacing with a new digital one, but I am having trouble removing the old thermostat. I can get the front cover off, and I have access to the mercury element, but I cannot remove the thermostat from the wall. I don't see any screws that hold the thermostat to the wall. All I see is the terminal strip that holds the wires from the heat pump and two terminals on the mercury element. Can anyone who has experienced this problem let me know how to remove this from the wall?

Hello, I have a problem with Heat Pump Unit, it is a Nordyne 12 Seer unit. Unit will not turn on in Heat or A/C. Contactor will click but not pull in. Replaced Contactor thinking coil might have been bad. The inside unit works ok (Emerg. Heat) and fan will blow when HP is supposed to be running. I do not get 24V to the contactor but I have 24V at T-stat and outside where wires go to Defrost control board. I can manually activate contactor and unit will run. Pipe warms up as it is supplying heat but unit will not start. I am fairly competent electrically and it seems that something (safety) is holding out my control voltage. Any help would be appreciated!!! Thanks alot, Tom