Well, I'm not on a quest to **bleep** Nest for their product design
first of all. I happen to have experienced the same failure mode three
times since my early adoption. I also cannot make a 100% guarantee that
the guidance I am providing here is fla...
25 volts ac rms seems to be a popular rating in the "little fuse" ZA
product line. This matches the control power transformer output on my
particular HVAC system, but I think it's fair to say 24vac is
universally common. As far as the joule rating go...
Be aware of common failure mode when using a nest thermostat on a heat
pump system which causes a no heat condition that the thermostat does
not self diagnose or even identify is happening.I have had 3 nest
thermostats fail in the same way, and I hav...