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

    Sorry, I don’t know the air handler model. I could check a bunch of things?

    It looks like the circuit supplying voltage is still providing roughly the measurable power needed to operate. https://ibb.co/Yfh5W1C

    • Des [she/her, they/them]
      ·
      2 years ago

      do you have any access to the inside unit? behind the return air vent (where the filter would be)? do you have a seperate furnace and air handler maybe? usually the brand and model number are on the inside unit. mostly so i can try to pull the manual for it because it will have it's own thermostat wiring info usually the color coding it uses and the voltages. for example i just have a heat pump with an electric strip in it so there's just a single air handler.

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

        It ended up just being a dead thermostat, got a dumb version to slot right in and it came up fine. Thanks for your help!