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Old 05-21-2019, 06:48 PM   #11
BlueJay Traveler
Junior Member
Join Date: Jan 2019
Location: Merrill
Posts: 4
I picked up my 26 RBS cougar at the beginning of April 2019. I had it home one week and slept in the unit over the weekend. Temperature was below 40° and furnace had issues the first night. Everything worked fine until 3 AM. That’s when I noticed I had a fuse blown. After replacing the fuse I’ve noticed the AC unit would Click when IN·command was calling on the furnace to ignite. The furnace fan would engage normally but would never attempt to fire. Over the next few hours the furnace would try to ignite and burn for several seconds and then shut off. Over the next few weekends we slept in the camper several times while having the same problems. The furnace would run perfectly for a while and then The in command would attempt to start the furnace, that’s when the AC unit would click several times and the furnace would never attempt to fire. I found that when I would disconnect the power plug in the relay control box and plug it back in the system would reset and the furnace would work for a while. I took the unite to the dealer and they have no idea what is wrong. How can this problem still be happening? Very disappointed

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Old 05-21-2019, 06:52 PM   #12
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Join Date: Feb 2019
Location: Wickenburg
Posts: 474
I had this exact same symptom right after the dealer fixed the gateway module problem, and I had to bring it back. It turned out to be construction debris (sawdust and styro chips) fouling the sail switch in the furnace. They had to remove the entire unit and it was a month all told before we got our rig back.

In general, you will be finding a lot of sawdust for the first couple trips. I also had styro waste plugging up the intake screen on my toilet, with the result that I had almost no water flow the entire three weeks of our first trip.

2019 Cougar 26RBSWE
2019 Ford F-250
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Old 05-22-2019, 09:32 AM   #13
Junior Member
Join Date: Jan 2019
Location: Canada
Posts: 26
We've had similar issues in our 2019 315 Cougar. Our furnace would quit igniting usually at the best times 2-4:30am. It would try to cycle on but wouldn't light. My fix was to go outside with a flashlight and screw driver, and remove the furnace cover and toggle the power switch on and off till it started to work again. The diagnostic sticker in the furnace cabinet indicated 1flash every 3 seconds was a airflow/limit fault. Took it to the dealer who had it for 2 weeks and couldn't find anything wrong asked them to replace the sail switch or the whole furnace. Called Krapstone and they denied any issues with the furnace. The unit is an inbred cross between Atwood crap and Dometic junk. The dealer put in a new sail switched it's still working. So who knows? I'm just getting very disappointed with paying good money for something that has no quality or backing by Krapstone even under warranty. It seems to me their just hoping to out wait doing anything until the warrenty is done.

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