Question about Dometic Rooftop RV Air Conditioner
We are trying to wire this back up. Can you help?
Red and white are positive and neg 12v
green is low fan
grey is high fan
yellow is cooling
blue is neg 12v(marked B-)
Posted on Sep 13, 2011
Generally on most thermostats R is the power to the thermostat, W is for heating, Y is for cooling, and G is for fan operation.
Posted on May 31, 2008
I was replacing a DUO-Therm 3105058 Rev A. very old Thermostat in a Coachman RV with 3106995.032 from Amazon. After looking all the information on the directions it was clear I would have to play a hit or miss on some of the wiring. Instead of using the same coding, such as RC, RH, G, Yellow and such. they used the function and I had to guess at some.
Here is the wiring I found worked:
There are 6 wires. One set of two wires (white On the W & red on the RH) and the set of 4 (yellow On the Y, green on the G, red on the RC and blue on the H). So to keep it simple the red on the RH went to the +7.5. The White on the W went to the FUR. HS/HP not used. the Yellow from the Y went on the cool. The green on the G went to the fan. The red on RC went to GND. and the Blue on H went to Hi fan.
So red (RH) of the 2 wire goes to +7.5
White (W) of the 2 wire goes to FUR.
Yellow (Y) to cool
Green (G) to fan
Orange or red from the RC lug goes to GND
Blue (H) goes to Hi Fan
Posted on Jun 11, 2020
I looked everywhere for clarification on this mod
All the tips have RW + RC jumpered with a "BLACK OR GREEN" wire ground going to them....that didn't make any sense electronically to me so I put together a schematic diagram and just installed the mod last night...it works perfectly in cool, heat, fan speeds, everything.
RC and RW are unjumpered in mine since each could theoretically have a different power source, otherwise you could be working on one alone and the darn thing energize on you from the other units power source.
Posted on Aug 18, 2012
I am installing a therm from the old duo therm need the wiring diagram for the new one blue , y, white, bro, org where do they go
Posted on Apr 20, 2010
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