I have this digital thermostat controlling my heater (gas).
When I turn it on to lets say 66 deg, and the house is at 60, the HVAC will start working of course.
Problem: After few minutes, the thermostat goes dead as if there is no electricity to it. The HVAC will continue working by the way.
After a few more minutes, it goes back to life as if nothing happened.
That will keep happening as long as the HVAC is working.
- It never happens that I go to the thermostat and it is "dead" if the HVAC is not working
- I thought the first time it was dead, that the breaker jumped. I went to check and of course it didn't. I say of course because I just said that it will come back to life by itself after few minutes.
What is going on?
to the thermostat by unused circuits and it does in many if not most cases however there are many complaining after a week or so of the Nest no longer operating or operating normally, this is due to no Common leg in most cases.
Best Answer
Sounds like a problem with the thermostat itself. Try replacing the batteries - and make sure you're using alkaline or NiMH batteries -- not "Heavy duty" (which drop off slowly, and are not good for electronics - or anything, really).
If the batteries are good, you likely have a defective thermostat. See if they'll replace it on warranty (quick reading of the 1 star reviews on amazon say this can be a hassle) or buy a new one.