1

I'm sure my heater is working. It's 47 degrees outside, and I'm only a little cool inside. My Nest thermostat is set to 67 degrees. The screen on my app (which agrees with the thermostat) is shown below.

I tried to make it a little warmer, putting the setting to 72 degrees and nothing happened. I raised the temperature further, and still nothing, all the way up to 90 degrees. It's been nearly an hour now, an nothing is happening.

The thermostat screen says "Heat Stage 2". I don't know if that is related to my question below, but I'd like to know. And the screen is orange when the setting is above 67 degrees.

If I set the temperature below 67 degrees, the screen turns gray and is says "Heat Set To" whatever I set it to. And a green leaf appears.

I have used this thermostat for many months now without any major issues.

Have I inadvertently configured something or accepted some utility company mode of operation that is preventing me from having a system that is more responsive to my manual temperature setting? Is the auto-scheduling the reason I can't control the temperature? (I think I just recently accepted the suggestion to try that.)

UPDATE

I woke up this morning to 37 degrees outside and the thermostat reading 71 degrees. It was comfortable inside all night. The furnace was running when I woke up, and probably off and on during the night.

I think this has something to do with the program that the Nest is running. Accepting suggested settings offered by our utility company probably has something to do with this unwillingness to follow the temperature I manually dialed in. I'm sure there's a way to override that in the settings, but the most obvious way - using the temperature setting on the dial - didn't work. I'll have to call Nest product support to see what is going on. I'll post back if and when they tell me what's going on.

In the meantime, all your Nest are belong to us.

Also, it's not a heat pump.

enter image description here

  • Is this a new thermostat or was it working fine and then stopped? Why are you sure your heater is working? – HazardousGlitch Feb 22 at 9:43
  • I have used this thermostat for many months. (3 years maybe). It's now 37 degrees outside, and while I have been sleeping, my thermostat says it t's 71 degrees inside. It's actually more comfortable now than when I posted my question. So the question is why isn't it turning on when I manually raise the temp setting? – Jim Feb 22 at 11:00
  • If you remove the thermostat and jumper Rh to W, does the heat come on? – ThreePhaseEel Feb 22 at 12:27
  • Are you on heatpump or on fuel for heating? If you're on heatpump is possible that backup element is not powerful enough to heat the home fast (or even not installed at all). I think you could try to set the fan to maximum (or manually on) to see if soemthing changes – DDS Feb 22 at 13:28
0

Is this a heat pump? It sounds like a heat pump.

To quote Boromir, "one does not simply cycle a heat pump on and off." Heat pumps are similar to air conditioning units (but with the ability to pump the other way). When they shut off, they need some time to stabilize before they start up again, otherwise you have what's called a "short cycle" which can damage it.
Most units have an internal protective circuit to make sure it doesn't restart too soon after a shutoff.

If you command increased heat shortly after it has shut off, the thermostat might call for heat, but the internal protective circuit will prevent it from starting right away. This may cause the thermostat to call for 2nd stage heat.

  • It's a furnace, not a heat pump. It doesn't include protection to keep the blower going after the furnace stops burning. But, as I said in my question, I couldn't get the furnace to go on by setting the temp higher, even after an hour of off time. I am going to update my question with new info. Sorry I didn't have time to post it this morning. – Jim Feb 23 at 0:13

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.