Forum Discussion
Chris_Bryant
Aug 05, 2019Explorer II
camperdave wrote:
I'm replacing the original RVP analog thermostat with a Honeywell. The old system had 6 wires which I believe to be as follows:
Red (+12v)
Blue (-12v)
Yellow (cooling)
White (heat)
Green (high fan)
Grey (low fan)
Based on some interneting, I thought I had it figured out. Capped the 12v+, Yellow to Y, White to W, Green/Grey combined to G, and Blue to R/Rc.
It did not work... Thermostat is calling for cooling, but AC is not coming on. Any help? :)
original thermostat:
New Honeywell:
Coleman uses +12 vac to energize their relays, so just disconnect and cap the blue (-12 v or ground) and hook red to R/Rc. This will provide the +12 vac to the relays.
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