Google Nest Community

Finally got to swapping out the nest thermostat for my old 'dumb' one. The problem (heat for 10 mins then stop even though the desired temp hadn't been reached) still existed. Good news - it isn't the nest thermostat. Had a service tech out this morn...

I'm sure mine is also not a wiring issue - ran great for a year. Originally, I thought it was the furnace, but I'm starting to think it's the Nest thermostat (that's why I'm going to test it by swapping with the 'dumb' thermostat). My initial thought...

Great minds....earlier tonight I dug up my old thermostat and will swap it out tomorrow to try to narrow down the problem.

I did and it worked for one cycle.

I have the same problem. Seemed to start about a week ago. Still haven't found the answer.