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thermostat

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Dave0377

Newbie
Joined
Apr 2, 2022
Messages
7
Location
snohomish wa
RV Year
2001
RV Make
holiday rambler
RV Model
alumascape
RV Length
26'
Chassis
5th wheel
Engine
na
TOW/TOAD
f350 Lariat 7.3 modified
Fulltimer
No
I need help with a color code for a 8 wire system thermostat on a 2001 26' fidfth wheel
 

DavidL

At Cruise Speed
Joined
May 8, 2021
Messages
86
Location
Metamora, MI
RV Year
2002
RV Make
Newmar
RV Model
MountainAire
RV Length
4370
Chassis
Spartan K2
Engine
Cummins 500hp
TOW/TOAD
Grand Cherokee
Fulltimer
No
What thermostat make / model?
Find the manual for that.
Don't just assume the colors are correct.
 

Dave0377

Newbie
Joined
Apr 2, 2022
Messages
7
Location
snohomish wa
RV Year
2001
RV Make
holiday rambler
RV Model
alumascape
RV Length
26'
Chassis
5th wheel
Engine
na
TOW/TOAD
f350 Lariat 7.3 modified
Fulltimer
No
Thanks for the reply. I only have the wires. The original thermostat is missing. I have the heat functioning. Just need the AC now. Dave
 

DavidL

At Cruise Speed
Joined
May 8, 2021
Messages
86
Location
Metamora, MI
RV Year
2002
RV Make
Newmar
RV Model
MountainAire
RV Length
4370
Chassis
Spartan K2
Engine
Cummins 500hp
TOW/TOAD
Grand Cherokee
Fulltimer
No
Then you should find the other end of the wires and map them to the function of each wire. If this is a multizone system then they probably go to a "Dometic" Controller
https://www.amazon.com/dp/B00HSO05R4/?tag=rvf01-20
or the equivalent. You should find out this information before thinking about replacing the thermostat as it all has to be compatible with rest of system. This isn't like a house thermostat where the same colors mean the same thing (if wired standard). On my Newmar the controller was in the master bedroom under the clothing drawers...so it can be "anywhere".
 

Dave0377

Newbie
Joined
Apr 2, 2022
Messages
7
Location
snohomish wa
RV Year
2001
RV Make
holiday rambler
RV Model
alumascape
RV Length
26'
Chassis
5th wheel
Engine
na
TOW/TOAD
f350 Lariat 7.3 modified
Fulltimer
No
thanks, i'm pulling the ac cover, checking wire colors there
 

DavidL

At Cruise Speed
Joined
May 8, 2021
Messages
86
Location
Metamora, MI
RV Year
2002
RV Make
Newmar
RV Model
MountainAire
RV Length
4370
Chassis
Spartan K2
Engine
Cummins 500hp
TOW/TOAD
Grand Cherokee
Fulltimer
No
Note that if you have a multizone system, the thermostat doesn't plug into the rooftop units. They plug into the controller...
 

Dave0377

Newbie
Joined
Apr 2, 2022
Messages
7
Location
snohomish wa
RV Year
2001
RV Make
holiday rambler
RV Model
alumascape
RV Length
26'
Chassis
5th wheel
Engine
na
TOW/TOAD
f350 Lariat 7.3 modified
Fulltimer
No
thanks, i'm pulling the ac cover, checking wire colors there.
 

Dave0377

Newbie
Joined
Apr 2, 2022
Messages
7
Location
snohomish wa
RV Year
2001
RV Make
holiday rambler
RV Model
alumascape
RV Length
26'
Chassis
5th wheel
Engine
na
TOW/TOAD
f350 Lariat 7.3 modified
Fulltimer
No
it's not multizone.
 

Rich W.

Fire Dept. - mostly retired
RVF Supporter
Joined
Jan 19, 2021
Messages
775
Location
Grass Valley Ca
RV Year
2016
RV Make
Newmar
RV Model
Ventana 3427
RV Length
35
Chassis
Freightliner XCR
Engine
6.7 360/800
TOW/TOAD
2001 Jeep Wrangler, M&G air brake system, Blue Ox bar
Even if its not multi-zone, if it controls an AC unit up top AND a propane furnace, it will have a controller between the t-stat and the units, and that controller might be in the AC unit. What make/model AC unit do you have?

While youre at it you might check this out:

This Coleman chart might help:
 

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Dave0377

Newbie
Joined
Apr 2, 2022
Messages
7
Location
snohomish wa
RV Year
2001
RV Make
holiday rambler
RV Model
alumascape
RV Length
26'
Chassis
5th wheel
Engine
na
TOW/TOAD
f350 Lariat 7.3 modified
Fulltimer
No
duo-therm 59516.303c1, thanks for the response's. I was a fire comish for 6 years. Dave
 

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