Why Can't I Mix and Match RV AC Systems and Thermostats?
Updated 05/23/2025 | Published 05/03/2025
Products Featured in This Question
Question:
Good day. Im looking for a thermostat that works on 12 volts and will work with my RVs AC and Heating. All your thermostats say the brand they are made for, but it seems to me it shouldnt matter. My AC is coleman-mach. The problem with my current thermostat is it will not run the fan continuously while in heating mode. I would like a thermostat that does, has a digital display, and preferably has a heat/cold mode that uses heat/cold to maintain a steady temp within a margin. My current one does that but because of minimum run times it heats for too long rising the temp too high, then turns the AC on. That mode is not necessary, but preferable. Can you list a few models that would fit my needs and work with my system?
asked by: Dan C
Expert Reply:
No, I can't Dan because RV thermostats or at least 100% of ours don't work like that. It has to do with the signals sent to the control board in the ac unit or air diffuser box. There are some universal options out there but we do not carry them so I am not sure if there's one for the Coleman-Mach.
My only option for you is to replace your Coleman-Mach system with one that works with a thermostat like item # FR88TD. You can use the Furrion Chill HE RV Air Conditioner System item # FR65TD. This system has a zone controller that will allow you to wire in a furnace.
What kind of RV or trailer do you have?
Product Page this Question was Asked From
Replacement Wall Thermostat for Furrion Chill HE RV Air Conditioner - Single Zone - Black - R32
- Accessories and Parts
- RV Air Conditioners
- Thermostat
- Black
- Furrion
more information >
Continue Researching
- Search Results: rv ac soft start
- Search Results: furrion air distribution box
- Video: SoftStartRV RV AC Unit Soft Start Install - Fifth Wheel
- Shop: Timken Bearing Kit for Lippert, Dexter, and AL-KO Axles - 3,500 lb with #84 Spindle
- Shop: Dexter Bearing Kit for 1-1/16" BTR Spindle
- Shop: Timken Bearing Kit, L44643 Inner/Outer Bearings, L44610 Inner/Outer Races, 204507 Seal
- Shop: SoftStartRV Soft Start for Single Zone Air Conditioner Setup - Qty 1
- Shop: Bearing Buddy Bearing Protectors - Model 1980A-SS w/ Auto Check - Stainless Steel (Pair)
- Shop: Replacement Single Zone Controller for Furrion Chill HE Low-Profile RV Air Conditioner Setups - R32
- Video: Furrion Chill Cube RV Air Conditioner Air Distribution Box Comprehensive Review
- Q&A: Why Won't My Fan Shut off on My Furrion 13,500 BTU with Manual Air Distribution Box?
- Video: Review of Furrion Chill HE Low Profile AC Replacement Single Zone Controller - FR29AD
- Video: Upgrading the A/C On Your Retro RV
- Q&A: What Single Zone Controller Works With The R410A Furrion Chill HE FACR13HESA-PS-AM
- Video: Review of Furrion Replacement Wall Thermostat Chill HE RV Air Conditioner - FR88TD
- Shop: Replacement Single Zone Controller for Furrion Chill HE RV Air Conditioner Setup
- Video: Review of Furrion Ductless Air Distribution Box Chill Cube AC - LC44DX
- Q&A: Does the Thermostat for Furrion Chill Cube Ducted RV Air Conditioners Work w/ Ductless Setups?
- Video: Review of Furrion Replacement Single Zone Controller Chill HE RV Air Conditioner Setup - FR43PR
- Q&A: Instructions For Wiring Furrion Air Conditioning Unit with New Thermostat
- Q&A: Wiring Diagram for Softstart on Furrion Chill RV AC Unit
- Q&A: What is Function of 12 Volt Wires of Furrion Chill RV AC Thermostat
- Q&A: Purpose of Furrion Wiring Adapter for new R32 Units
- Search Results: 15000 btu ac
- Search Results: furrion chill cube ducted
- Search Results: furrion rv air conditioners
Dan C.
5/23/2025
The camper is a 2025 Jayco 29DDB. It has a Coleman-Mach AC, and a Suburban heater. The current thermostat is a Coleman-Mach 9420-381. With a brand new camper, it wouldn't be reasonable to replace the system so looking for a thermostat that will work with my current system and allow the fan to circulate while the heat mode is on. Thank you.