When there is a signal for heat the dial seems to get stuck and hums until i gently mov.
Wall mounted thermostat dial seems loose.
Thermostatscan be a little tricky but this is a pretty good plain answer what.
If it is a loose wire turn the ac unit off by switching the breaker.
I tried pushing just about as hard as i felt comfortable pushing but it still seems to sit crooked and feels very loose.
If you see dust being blown out this may have been your problem.
Pull the wall thermostat housing off of its wall mount plate.
The first thing you will want to do is to check the electrical panel to see if any breakers are off or tripped.
Basically it seems as though the two tabs at the top of the display aren t clicking into place.
Often when installing a thermostat people have no or little idea of what to do.
The other day i noticed that my 2nd gen nest thermostat is coming loose from the wall mount.
It should come off easily.
We have a round honeywell wall thermostat.
If everything looks ok then check the battery in your thermostat if it is a digital model.
Turn the thermostat off first and remove it from the wall base.
Get a can of compressed air the kind used to clean computer keyboards and blow it out.