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Old 04-13-2020, 04:08 PM   #1
1 Rivet Member
2011 20' Flying Cloud
Orlando , Florida
Join Date: Jun 2016
Posts: 12
Fantastic Fan power oscillation

On 12v and 110v the fan motor continually oscillates slightly on/off by itself. This causes the motor to continue running when the vent is all the way up or down. The resistor speed switch was swapped out and the exterior rain sensor was replaced with no change. Voltage at the switch jumps around from 1 to 110 volts. Any suggestions without replacing the fan unit is greatly appreciated.
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Old 04-13-2020, 05:05 PM   #2
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1969 25' Tradewind
Shasta Lake , California
Join Date: Sep 2012
Posts: 862
The unit should never see 110 volts !

You have an electrical problem in the trailer !

It could be a floating ground or intermittent converter problem.

Get it checked out by a pro.

There could be a shock hazard on 110v if you’re standing outside and touch the trailer skin .
Glen & Jane 1969 all electric Airstream 25' TradeWind
2014 Toyota Tundra
1998 Chevy Tahoe

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Old 04-22-2020, 03:26 PM   #3
1 Rivet Member
2011 20' Flying Cloud
Orlando , Florida
Join Date: Jun 2016
Posts: 12
Voltage continually strays from 1 V to 110 mV. Should have checked my post sooner. Thanks for responding.

Any suggestions whether this is a full unit replacement issue or possibly a motor swap.
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Old 04-22-2020, 04:30 PM   #4
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2008 22' Sport
Spicewood (W of Austin) , Texas
Join Date: Mar 2015
Posts: 1,731
IT DOESN’T sound like a “fan problem”... it sounds as if it’s a wiring problem,...perhaps a dangerous one. Fix the WIRING and the fan will likely work properly.
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