I've been noticing the house getting colder the last few days. I checked my Nest, and it says that it's heating the house. I've got it set to 20C, but it never goes higher than 16C. It's always just saying "20C in 1.5 hours". I check the vents, and the fan is working. There is air coming through them...but it's not warm.
I've tried turning the nest off and on, and I also turned the breaker for the furnace off, left it off for about 5 minutes, and then turned it back on. Still nothing.
