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Old 12-06-2015, 04:23 PM   #31
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Join Date: Oct 2013
Location: Iowa
Posts: 210
Instructions to add a small switch to a big box store digital thermostat (Honeywell, etc.) to allow you to select both fan speeds can be found here.

An easy modification.

RVP Thermostat Replacement with Digital Honeywell Thermostat - RVTalk Forum

Days Camping 2015 - 26 Days
2014 Flagstaff 5th Wheel - 8528IKWS
Built and Flying - Van's Aircraft RV-12
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Old 12-11-2015, 09:19 PM   #32
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Had the same problem with our 2015 Rockwood 8289WS. Removed screws to get to the furnace and found a huge tear in one of the flex ducts going to the main cabin. Made repairs and all is well so far. Hope this helps.

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Old 12-12-2015, 04:13 PM   #33
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We notice that the bath and bedroom are warmer than downstairs. Not near as dramatic as others have posted. I'm for sure going to swap out the thermostat for the digital one to help keep temps more steady. I've found that using the fireplace and a ceramic heater downstairs helps a bunch too.
Greg & Patty
2014 Flagstaff 8528IKWS
2011 Chevrolet Silverado 2500HD Crew Cab 4x4
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Old 12-12-2015, 06:46 PM   #34
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The furnace in these units put out a fixed amount of air volume. You should have vents with the flaps in them to regulate the amount of airflow to each vent. You need to vent more air flow to larger areas. The other thing that you need to do is add some insulation in the ducts to help transfer the heat. But air balancing will help make things feel for comfortable.
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Old 12-12-2015, 06:53 PM   #35
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You can also move the duct hoses around...from outlet to outlet
Bob/Linda, 99 Dodge 2500 Cummins,2010 8280 Rockwood Ultra-lite 5er, PullRite Superglide----- I'm retired......but work part time as a pain in the ass!........... USMC.
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Old 12-12-2015, 07:04 PM   #36
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Location: Mass
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We have a 8280 with the same problem . In the spring I will be installing dampers in the ducts lines to the bathroom and the vent at the top of the stairs . There should be enough air flow not to overheat the furnace . All the supplies are at the big box stores .

2013 Silverado extended cab 4x4 1500 Series
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