20 Most Recent Dometic 457915 Duo Therm Brisk Air Conditioner Questions & Answers


have to go through return air opening.

Dometic 457915... | Answered on Mar 13, 2016


sounds like duct damage or restriction in duct work.

Dometic 457915... | Answered on Aug 20, 2015


board or cable issue between thermostat and board.

Dometic 457915... | Answered on Aug 16, 2015


Low freon causes short cycling

Dometic 457915... | Answered on Aug 05, 2014


Low freon switch prevent the compressor from running when there is not enough freon to carry the oil to lubricate it. There is almost always enough pressure to start it but as soon as it's running low pressure drops and the compressor stops.

Dometic 457915... | Answered on Aug 05, 2014


Sounds like the compressor is seized up and the smell is from the clutch slipping when it tries to engage. If that is the case, you need a new compressor at a minimum.

Dometic 457915... | Answered on Aug 05, 2014


I'm sorry for posting here but I have the same problem and I want to know if you managed to find a solution

Dometic Heating... | Answered on Oct 25, 2020


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

Dometic Heating... | Answered on Jun 11, 2020


Need to go up there and give more info. Look for outdoor fan...Is it spinning? Compressor on? Could be dual capacitor as they are 50% of problem lately

Dometic Heating... | Answered on Aug 22, 2019

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