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Old 05-10-2014, 03:54 PM   #1
Junior Member
Join Date: Mar 2013
Posts: 13
Coleman-Mach Thermostat Wiring Help

I have a 2013 26BH Jay Flight with a white analog Coleman-Mach thermostat. During PDI in March last year the furnace was working. During the summer I had an issue with AC and resolved it by replacing the factory thermostat wire nuts and fixing a broken wire connection in the AC access panel in the ceiling. Didn't think to check the furnace after getting the AC running. I replaced the wire nuts one at a time and don't think I mixed anything up, but today the AC works, but heat does not. Does anybody know the correct thermostat wiring?

What I have at the moment:

Four wire bundle in wall:
- White to Thermostat Gray
- Red to Thermostat Yellow
- Green to Thermostat Green
- Blue to Thermostat Blue

Single large gauge White wire in wall:
- To both blue wires

Two wire pair in wall:
- Red/White to Thermostat Red
- White to Thermostat White

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Old 05-11-2014, 09:24 AM   #2
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Location: Grants, New Mexico
Posts: 2,637
Check the thread "New Digital Thermostat." I believe it will give you the help you need for wiring. Good luck.

2014 Jayflight 24FBS Elite. 2009 F150 Supercab UNICORN, 5.4L ,3.73, HD/Max Tow Package, Equal-i-zer 1K,
Progressive EMS-LCHW30, TST 507RV TPMS, Hydro Life HL-200, Maxxis 8008.
Best friend wife, Di, and dog Cooper. RETIRED 6/30/16. WOOHOO!
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Old 05-11-2014, 08:29 PM   #3
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Join Date: Mar 2013
Posts: 13
After digging I found a wiring diagram in this thread.
Appears that I am wired correctly. 12v fuse is shared with refrigerator and fridge is working. Anything else I could check before trying to schedule for service.
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