I have a dual unit/zone AC/Heat setup at my home. I believe they are Puron units (but that could just be the refrigerant in them). I bought two new rite temp touch screen thermostats.
I swapped out the downstairs unit and it worked great. However a couple days later when swapping the upstairs unit, I forget to put the mounting plate on before I wired the back of the thermostat. Power at the breaker was turned back on to test. However, when removing the wires to do this I spaced on switching the power off at the breaker box, and apparently shorted one or more of the wires together. Now, I can hear the thermostat click on and off, but I can't get that AC unit to fire up, AZ or heat.
The thermostat was not on when this happened, only the wiring plate, so I doubt the problem is with it. I am suspecting I may have caused a blown fuse (hopefully there is a fuse!) in the transformer or controller board?
Does this sound right? My wiring setup is a 4 wire (R G W Y, with a blue colored "C" wire as well).
I guess step one is pull out the continuity tester? Then see if I did permenant damage.
Just want to run this by those more knowledgable than myself in case I'm on the wrong track.