Forum Discussion
CarnationSailor
Nov 09, 2019Nomad
sayoung wrote:CarnationSailor wrote:sayoung wrote:
OP, you mentioned 3 wires so have a question. Is your heatpump a Dometic and if so you might have the " communicating " tstat & if so that's what you must use.
The 3 wires I mentioned are in a sheath and come from the gas furnace. There are 4 wires in another sheath that come from the Coleman Air Conditioner/Heat Pump.
With only 4 wires back to roof AC , you don't have a heatpump based on the Coleman wireing diagrams I have seen.
Trust me, I have a heat pump.
Check out the online manual for my thermostat which is the RVComfort.HP Model 8530. Seven wires are attached to it and are identified as follows:
These 3 connect to trailer wires that are in the same sheath so undoubtedly go to the same place, the furnace:
Red (+12 vdc)
Blue (-12 vdc)
White (Furnace)
These 4 connect to trailer wires that are in another sheath so they go to the same place, the Air Conditioner/Heat Pump:
Gray (Fan Lo)
Green (Fan Hi)
White/Black (Heat Pump)
Yellow (Compressor)
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