Need help with weird (?) wiring to thermostat and condensate pump

by Gil Cohn   Last Updated October 17, 2019 22:21 PM - source

I've searched a lot and can't quite find what how to solve this one. I installed an ecobee smart thermostat, which didn't work with 5 wire connection so I switched to their PEK module with only 4 wires. With this wiring the heat is working fine, but the cooling doesn't (the compressor doesn't kick in, and the fan is blowing ambient air). Anyhow, I tried to map my wiring and this is what I have. Looks wired to me that the Rc is jumped with the common. Any ideas how to fix it? enter image description here



Related Questions


Help wiring a Nest thermostat in an unusual situation

Updated December 10, 2016 08:09 AM



Only getting 15-16 volts from Furnace R and C

Updated August 27, 2019 21:21 PM