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rrev's avatar
rrev
Explorer
Apr 17, 2016

Replacing Coleman thermostat

I apologize if this has been answered before but I can't find the answer. I'm looking to replace the Coleman Mach analog thermostat with a digital unit. I'm looking at the Dometic 3313192.019 so we can have the a.c. fan running with the furnace. Does anybody know if this is compatible? Thanks.
  • time2roll's avatar
    time2roll
    Nomad
    Apr 18, 2016
    rrev wrote:
    Any tricks to wiring up the Honeywell thermostat or is it the same as the Coleman one I'm replacing? And just for my knowledge, why wouldn't the Dometic one work?
    Dometic uses a digital signal to a relay box specific to Dometic. Just 3 wires to the thermostat and 2 are for 12v power.

    It might be possible to adapt the relay box. You would need the wire diagram for both and connect accordingly.

    Possibly Coleman has a digital replacement that is compatible? I would look there first.

    Here is my Dometic install for comparison: (I have a Dometic A/C)
    > Dometic digital thermosta

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