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03-08-2020, 07:46 AM
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#1
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Montana Fan
Join Date: Feb 2018
Location: Arlington
Posts: 136
M.O.C. #21176
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Furnace blower
I was washing my 2016 3820FK when I was done I heard the furnace blower running. Went inside to check thermostat to see if I left it on it was off tried turning on and off did nothing. Went to power panel pulled the fuse fan stopped waited 30 sec. or more put fuse back fan came back on so I left it out going to look at today. Anyone have this problem. Maybe water got inside and messed something up.
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2011 Volvo 780 485 HP/1750 TQ 13 Speed 32000 lb ET air ride hitch
2016 Montana 3820FK Legacy package
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03-08-2020, 09:50 AM
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#2
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Montana Master
Join Date: Sep 2013
Location: Pensacola (mail forward service)
Posts: 3,198
M.O.C. #13740
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Sounds like the water intrusion issue another noted in the past. Bet there is no sealant on the outside cover and water can migrate onto the circuit board.
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2012 F350 6.7 L dually, 2013 3800RE with 6 pt leveling, Sumitomo 17.5" load range h tires, Samsung 18 cu ft residential fridge, 8k Morryde I.S. with disc brakes. Full timing since 2012.
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03-08-2020, 10:37 AM
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#3
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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Also, be sure your fan is set on auto.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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03-08-2020, 08:24 PM
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#4
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Established Member
Join Date: May 2017
Location: ormond beach
Posts: 49
M.O.C. #19826
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I have a 2017 FB3820. A couple of weeks ago while draining the HWH, my furnance did the same exact thing. Seems the water ran over the cover and made its way inside and flooded the electronic fan board. The position of the board is terrible, it lays flat in a little box that doesn't drain to well. I pulled out the board and dried everything with a hair dryer. Then I filled the seam around the furnance with clear silicone, once fully cured I ran a razor through the middle of the silicone so I could still remove the cover pretty easily. Seamed to work, I haven't had the problem reoccur yet.
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03-09-2020, 02:48 PM
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#5
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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Used butyl tape on mine and haven't had water in there since.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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