I don't know if you received this info, but before you advised me to go to the LuxProducts website, I found it on my own and after the Tenant sent me pics of the thermostat, I was able to 2nd guess the thermostat to be LuxPro HP2110 Series Programmable Heat Pump Thermostat. The Tenant and myself cannot figure out how one can put in 1111 to unlock the termostat for the heater and/or fan to work.
According to the instruction manual, it only reads about the program lock which requires next, next, next and hold buttons to be pushed to lock or unlock. Is this one and the same as you were talking about but without the code 1111?
I did what the instructions stated, next, next, next, hold to remove the lock feature.
But, the heat still does not go on. The only thing I can imagine is the termostat is bad. Is that possible - doesn't make sense to me?
We have a technician on their way to the home. He said he can over-ride the system so they can at least get heat this evening. There are 4 children and 2 adults in the home, and although they are lucky they are not living back east, 30 is too cold to be without heat in a home in CA.