Central Heat Won't Turn On When I Raise the Temperature on Nest Thermostat

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.