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12-12-2022, 09:24 AM
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#1
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Seasoned Camper
Join Date: Jan 2020
Location: Myrtle Beach
Posts: 83
M.O.C. #25701
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Fan running in panel at steps going to bedroom
We have a 2020 3931FB and since we have moved to a permanent spot in the campground we are hearing a fan start running in the panel at the steps.
I seem to remember someone posting at one time about a fan running and the comment was it was the cooling fan for the inverter???
I don't know whether we just didn't hear it before because of other outside noise since it is much quieter here, or it just started. And it is not all the time. I did notice that the temperature in the rig inside is always at 74 or above before it comes on. The weather has been great and we have just been opening windows instead of running the A/C.
Any ideas or advice??
Thanks.
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12-12-2022, 09:49 AM
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#2
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Montana Master
Join Date: May 2019
Location: Alton
Posts: 2,701
M.O.C. #24086
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If your circuit breaker panel is there, it's the converter cooling fan.
The converter runs your 12v system and charges your batteries.
__________________
Daryl and Marianne,
2019 3130re 20th Anniversary Edition
2016 F350 Lariat
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12-12-2022, 09:53 AM
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#3
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Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,369
M.O.C. #4831
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Just to add, it is normal for the converter cooling fan to run. The process of making 12V to charge the battery and run 12V equipment generates heat and the fan help cool the converter.
__________________
Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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12-12-2022, 10:23 AM
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#4
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Montana Master
Join Date: Apr 2006
Location: Mesa az
Posts: 2,953
M.O.C. #5651
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Our bathroom is right above the fuse panel box. You can hear the fan speed go up each time another 12v light or such is turned on. Several different speeds.
__________________
Tom and Gail
2013 Mountaineer 362
2012 Silverado 2500
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12-12-2022, 01:24 PM
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#5
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Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,702
M.O.C. #12947
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Quote:
Originally Posted by twindman
Our bathroom is right above the fuse panel box. You can hear the fan speed go up each time another 12v light or such is turned on. Several different speeds.
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Our converter fan would run a lot before I replaced all the light bulbs inside the rig with LED's. Now, we rarely hear the fan run, so the 12 volt load has really decreased since doing the LED upgrade.
__________________
Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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12-18-2022, 02:02 PM
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#6
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Montana Master
Join Date: Jun 2020
Location: Qualicum Beach
Posts: 665
M.O.C. #26399
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Quote:
Originally Posted by greenportbeach
We have a 2020 3931FB and since we have moved to a permanent spot in the campground we are hearing a fan start running in the panel at the steps.
I seem to remember someone posting at one time about a fan running and the comment was it was the cooling fan for the inverter???
I don't know whether we just didn't hear it before because of other outside noise since it is much quieter here, or it just started. And it is not all the time. I did notice that the temperature in the rig inside is always at 74 or above before it comes on. The weather has been great and we have just been opening windows instead of running the A/C.
Any ideas or advice??
Thanks.
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Normal CONVERTER cooling fan noise. If you have an inverter it will be mounted elsewhere and will also have a loud fan.
__________________
2018 Keystone Montana 3811MS
2017 Ford F450 diesel dually
600AH Battle Born Lithium Batteries, 1,080 watts solar
3,000 watt hybrid inverter with 120A charger
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12-18-2022, 05:39 PM
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#7
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Montana Fan
Join Date: Apr 2019
Location: Long Isalnd
Posts: 136
M.O.C. #23929
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If it seems to be running more than normal, look around for something that would be draining the batteries. Same thing happened to me, it turned out to be my breakaway switch was pulled out from our last tow. Pushed it back in and the fan stopped about a half hour later when the batteries fully charged.
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