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Joined 10 months ago
Cake day: November 23rd, 2023
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1·10 months agoI’m pretty sure the C wire is for the AC which is outside - but then, I’m not sure what that means for how to install the PEK?
You were right - the previous installer had wrapped the c wire around the others further into the wall on both thermostats.
I did end up making a frustrating mistake following the directions - at first, since I didn’t find the C wire, I figured I would need the PEK and started following those steps. Ecobee’s steps for the PEK install said that if you have a zoned system [I do] then you’ll have to install it at the zone control and not in the HVAC control board.
I did that and it blew a very hard to find fuse on the zone board - I ended up having to order online after not finding it at the various supply stores locally. When I called ecobee they said that the PEK should never be installed in the zone board itself - which is the opposite of what the app told me to do.
Anyway, once I found the C wire I realized I didn’t need the PEK after all. I replaced the fuse after a few chilly nights and both zones are up and running now.