Heat pump set up. See pics for setup info. No control board to wire in c-wire adapter. [heatpump1] Have not labelled anything, but what I believe I should do is to approach as if the wire nuts are the control board. So I would wire in the adapter for the Y, W, R, G, but I am not sure how to wi…

[heatpump2] One more, past the wire nuts

Black is common, yes. Just gonna copy/paste and edit from the other thread with point to point wiring: I think you should connect your thermostat adapter wire as follows: You want to make sure all power is off to both the inside and outside units before unscrewing any wire nuts. Have extra wire n…

Thank you so much! I’m going to give this a shot Friday or Saturday!

anxiously awaiting your findings, as I’ve received a Wyze today that is convinced that my Electric Furnace is a heat-pump, and my furnace does not have a control board from what I can tell. [image]

your B wire is a C wire. Tell the wyze app that you have the following wires (from left to right on your current stat): C G Y R

It works! Wyze turned my Aux into W1 and my G into C. Wired in and everything worked perfectly first time when it powered up and tested. Thanks for your help!

Wiring issue - no control board at Furnace for C-wire adapter

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Waterbird December 27, 2020, 1:03pm 4

Found this wiring diagram that may prove helpful also

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Wiring issue - no control board at Furnace for C-wire adapter

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