Edit: can’t believe I didn’t describe the issue. The thermostat itself is just unresponsive, blank screen. It’s not receiving power. It doesn’t appear to be a model with batteries btw, as I see no way to open any of the back portion of it.

Edit 2Am I an idiot? I don’t see a battery compartment anywhere:

https://ibb.co/hYDhVYH

Also I can see from the voltmeter that the C-R labeled wiring is receiving roughly the required voltage. https://ibb.co/Yfh5W1C

Heading to the hardware store to buy a multimeter.

I threw some circuit breakers in the house last night while investigating a light, but they all should’ve just been in the kitchen.

The user manual says nothing of real value to me. I’ve thrown the AC, heater, and other circuit breakers. Anything I can do other than check with a multimeter and then call a technician?

https://digitalassets.resideo.com/damroot/Original/10014/33-00182EFS.pdf?_ga=2.88827611.1567563007.1669391413-594870340.1669391413

  • copyleft [none/use name]
    ·
    2 years ago

    Ask and ye shall receive, I think most of them look seated OK but the last time I wired anything was high school: https://ibb.co/GnTvR2N

    • StewartCopelandsDad [he/him]
      ·
      2 years ago

      looks fine, give em a tug to make sure they're not loose. with a C wire your thermostat is unlikely to need a battery

      oh and FYI - if you are cold, you can manually connect the R and W wires with an alligator clip / paperclip / etc. this will turn your heater on, buy you some comfort to fix the problem. Safe for furnace, a thermostat just switches a relay to connect these two wires.

      • copyleft [none/use name]
        ·
        2 years ago

        Nothing came loose! I cleaned up the thermostat pins / checked they weren’t bent.

        Thanks for the tip, that’ll definitely come in handy in the meantime cause I think I might just have to go pick up a new thermostat and test it out.

        • StewartCopelandsDad [he/him]
          ·
          2 years ago

          Good luck! And check if your local utilities have a smart thermostat rebate program, mine gave me a Nest for free.

          • copyleft [none/use name]
            ·
            2 years ago

            One last quick question: I just threw my breakers labeled Furnace and AC, and the lines are still hot. What else could it be receiving power from?

            • StewartCopelandsDad [he/him]
              ·
              2 years ago

              that's odd. power should be coming from your furnace. They sell adapter kits that use a power outlet to inject power where you don't have a C wire from the furnace, but those are pretty obvious and usually located near the thermostat on the wall. Maybe your breakers are mislabeled?