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Can Furrion Chill HE Air Conditioner Replace Dometic Duo-Therm AC Unit  

Updated 07/09/2024 | Published 06/29/2024

Question:

I have a 2008 Doubletree Mobile Suites 5th wheel RV with a Dometic Duo-Therm set up for two AC units. I want to replace the main AC unit with the FR42 unit. All of the documentation that I see shows either a 6 Prong or a 9 Prong connector going to the roof top unit. In my case I dont have either connector. Please see pictures. All of my work will need to be performed on the roof as there is no inside access panel for this unit. Is it possible for me to use the FR42 in this setup?

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Dometic Duo-Therm Tag
Dometic Duo-Therm Tag
(click to enlarge)
Dometic Duo-Therm Thermostat
Dometic Duo-Therm Thermostat
(click to enlarge)
Dometic Duo-Therm Wiring
Dometic Duo-Therm Wiring
(click to enlarge)
Dometic Duo-Therm Wiring
Dometic Duo-Therm Wiring
(click to enlarge)
2008 Doubletree Mobile Suites 5th wheel RV
2008 Doubletree Mobile Suites 5th wheel RV
(click to enlarge)

Expert Reply:

Hey Phillip, thanks for reaching out!

Yes, the Furrion Chill HE Replacement RV Air Conditioner for Coleman Setup # FR42PV can be installed in place of your Dometic Duo-Therm system, but you may need to hardwire your connections since you're having issues finding a plug and play connector. You may consider using part # FR58PR in your case though, as this is the same air conditioner but it doesn't come with the Coleman wiring so you'll save a little money there.

I'm attaching the wiring diagram from the instructions for you to reference. If you haven't hardwired an AC unit before, you might consider having a qualified technician or experienced friend do it for you or walk you through/double check everything.

expert reply by:
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Jon G
Furrion AC Unit Wiring Diagram
Furrion AC Unit Wiring Diagram
(click to enlarge)

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