Comment on Google pulls the plug on first and second gen Nest Thermostats
unphazed@lemmy.world 2 weeks agoI replaced mine with a Sensi. 4 months with Nest, and it decided to confuse hot vs cold signals. Middle of August, it tried to “cool” my house at 3am, instead turning on the furnace, and just kept on going due to the temperature rising. For a week straight, I awoke to 90 degree temps in my house at 3:30 to 4am, and a nice heating bill. I had an hvac friend come over ad tell me in fact, yep, it’s sending signal to furnace, not ac. He checked the wiring, all good. He admitted he knew little of Nests, but said only an idiot would design a thermostat that could allow for a hot/cold signal switch without rewiring.
I have the same brand and didn’t program it correctly, though my wiring was on point. HVAC guy puzzled over it a few then called me over to show me what the cryptic options meant. Been solid for a few years now.
I’d like to see those options in the app, but if those were included people would fuck them up and blame the company. 🤷🏻
Brkdncr@lemmy.world 2 weeks ago
Heat/cool wiring is rarely correct, many thermostats will have a software option to reverse the wiring.
Sucks that yours got reset for no good reason but it’s probably for the best
unphazed@lemmy.world 2 weeks ago
I mean, I’m not a trained tech, but it isn’t hard to open up the heat pump and look at wires going in and looking at the thermostat and making sure they match. Although I admit someone ran stranded wire instead of solid core (one day I might try to fish a new wire). For now I just tinned the ends.
Zoot@reddthat.com 2 weeks ago
There’s nothing wrong with stranded wire, it just means if it’s carrying voltage and a few strands snip or break (leading to greater than 15% voltage loss) it can cause issues. Solid is simply an all or nothing kind of wire.
The only thing I use solid core for is fire alarm systems (where all or nothing is crucial), certain audio equipments, and anything nearing high voltage which a thermostat generally reaches. If it does take 120v+ then wow what why