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NorthwestBound's avatar
Nov 25, 2016

Replacing Dometic Duo Therm thermostat

So i picked up a Honeywell programmable digital thermostat to replace the old analog Dometic Duo Therm that has more than a 10 degress f spread from off to back on, giving us a temperature roller coaster throughout the chilly nights.

My issue is my wiring. The colors dont match the terminals they are wired to causing confusion. If you have any insight i woul appreciate it. Heres what ive got:






And heres what i want to replace it with:

1 Reply

  • Hook it up by the terminal codes. RH most likely goes to R. The others look like they match.

    W=Black
    Y=White
    G=Green
    RC=Red
    H=Blue
    RH/R=Red?