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Old 06-09-2019, 05:02 PM   #1
Junior Member
Join Date: Jun 2018
Posts: 2
Question Ceiling Vent Fans

Own a National 2007 Dolphin LX, Just started having trouble with the Celling Vent Fan starting and cycling without any pushing of operation buttons at the control panel. Has anyone had experience with these fans and what could cause it to run independently and cycle without control? The moterhome has been under a structured cover all of its life. Hope someone out there has experience with these Vent Fans.

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Old 06-09-2019, 07:28 PM   #2
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Join Date: Mar 2012
Location: Lac Du Bonnet, Manitoba
Posts: 526
I had an intermittent problem with ours, but different fault, fan would sometimes not run. It turned out to be an bad intermittent connection on the circuit board in the ceiling assembly, it appeared maybe moisture(rain) got on circuit board causing some corrosion. I cleaned that area of the circuit board and re-soldered the bad connection. This issue was found by closely visually examining the board and spotting the bad area. I was lucky it wasn't more serious, I was almost ready to replace the entire unit. If you are a DIY person, you could look at the circuit as well, also I would visually check plugs & connections at the back of the fan control panel. If not, I hear the manufacturer is very helpful in assisting owners of their product and solving the problem. Good luck.
Ellen & Greg
08 National Dolphin DL-35Ci, RoadMaster Rear Sway Bar, Rear Trac Bar,
Workhorse W22, Kelderman Air Ride, Towing 08 Smart Car
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