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Old 04-22-2019, 07:06 AM   #3
1retired06
Montana Master
 
Join Date: Feb 2012
Location: Lake Gaston
Posts: 8,773
M.O.C. #12156
We have a Dometic 4door. Three computer fans kick in and out to push heat. When they kick in, does make a loud hum. Normal.
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Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
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