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05-31-2014, 09:15 AM
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#1
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Senior Member
Join Date: Sep 2009
Location: Lexington, NC
Posts: 2,621
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Inverter fan problem?
I hardly ever notice my inverter fan, but during a quiet time last week, I heard the fan come on, but it was sort of revving like a car engine, instead of the constant whirring sound I was expecting. I don't think it was louder than usual...just sort of stuttering and very quickly going between fast and slow.
I was hooked to shore power in a site I use often at this particular campground. Just a couple of lights on in the camper, no major power draw. No dimming of lights or anything like that.
After a few minutes of this, the fan cut off. We were an hour away from breaking camp and coming home, so I never heard it again.
Any thoughts on this? Should I hook up and pull it in to be checked, or just keep an eye on things?
This is a one-year-old Surveyor 220. Thanks.
__________________
2018 Coachmen Apex 249 RBS
2010 Silverado LT 5.3 V8
The world is a great book, of which those who never stir from home
read only a page. - St. Augustine
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05-31-2014, 09:37 AM
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#2
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Senior Member
Join Date: Feb 2012
Location: Clarksville Va.
Posts: 10,422
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It might be going out, or is it a variable fan like on a convertor? Before you take it in I would run it at home and watch it first, keep a load on it for awhile and see how it does. Or do you mean your convertor? If you mean the convertor then it is variable that works off the heat being produced.
__________________
Coachmen M/H
Concord
2018 / 300 DSC
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05-31-2014, 10:01 AM
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#3
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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I think he is talking about the converter rather then inverter.
The cooling fan runs at a speed according to heat the hotter the converter the faster the fan runs.
TURBS
"Sabre owners united"
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05-31-2014, 11:04 AM
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#4
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Senior Member
Join Date: Sep 2009
Location: Lexington, NC
Posts: 2,621
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Quote:
Originally Posted by f1100turbo
I think he is talking about the converter rather then inverter.
The cooling fan runs at a speed according to heat the hotter the converter the faster the fan runs.
TURBS
"Sabre owners united"
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yes, my mistake. I guess I'm talking about the converter, where all the fuses are. Sounded like it was laboring to maintain any particular speed. I'm guessing that regardless of being variable speed, it would probably stay on the appropriate speed for more than a second or two under normal circumstances.
__________________
2018 Coachmen Apex 249 RBS
2010 Silverado LT 5.3 V8
The world is a great book, of which those who never stir from home
read only a page. - St. Augustine
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05-31-2014, 11:20 AM
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#5
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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I'd have to assume it's a Wfco and it's common for the fans to up and quit without your knowledge.
Soon after your converter will overheat and it's all over but the crying.
I installed a high quality ball bearing computer fan and installed a manual switch.
When ever we're camping the fan is running 24/7.
TURBS
"Sabre owners united"
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05-31-2014, 11:21 AM
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#6
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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120mm fan.
TURBS
"Sabre owners united"
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05-31-2014, 12:01 PM
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#7
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Senior Member
Join Date: Sep 2009
Location: Lexington, NC
Posts: 2,621
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Quote:
Originally Posted by f1100turbo
120mm fan.
TURBS
"Sabre owners united"
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Thanks for all the input. I will definitely get it checked next week before I get somewhere and the fan quits.
Once again, the folks on this site come through with good advice, good ideas and peace of mind. Thanks again.
__________________
2018 Coachmen Apex 249 RBS
2010 Silverado LT 5.3 V8
The world is a great book, of which those who never stir from home
read only a page. - St. Augustine
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05-31-2014, 12:04 PM
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#8
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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Remote switch next to ems.
TURBS
"Sabre owners united"
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06-05-2014, 10:45 AM
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#9
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Senior Member
Join Date: Sep 2009
Location: Lexington, NC
Posts: 2,621
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Update
Regarding the converter fan: yes, Turbs was right, it is not an inverter. Anyway, thanks to good advice here, I got it into the shop. They checked and said the converter is going bad, and a check of my battery indicated that it would eventually be fried.
The camper is a year and two months old, just out of warranty, but the service manager is going to call the converter company and see if he can get us some help on it.
So glad I took it in.
__________________
2018 Coachmen Apex 249 RBS
2010 Silverado LT 5.3 V8
The world is a great book, of which those who never stir from home
read only a page. - St. Augustine
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06-05-2014, 11:01 AM
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#10
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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Quote:
Originally Posted by mjones12
Regarding the converter fan: yes, Turbs was right, it is not an inverter. Anyway, thanks to good advice here, I got it into the shop. They checked and said the converter is going bad, and a check of my battery indicated that it would eventually be fried.
The camper is a year and two months old, just out of warranty, but the service manager is going to call the converter company and see if he can get us some help on it.
So glad I took it in.
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If they can't get you a wfco "cheap" then opt for a progressive dynamics brand with charge wizard and remote pendent.
The extra price is worth it.
TURBS
"Sabre owners united"
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06-05-2014, 01:52 PM
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#11
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Senior Member
Join Date: Feb 2012
Location: Clarksville Va.
Posts: 10,422
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Quote:
Originally Posted by mjones12
Regarding the converter fan: yes, Turbs was right, it is not an inverter. Anyway, thanks to good advice here, I got it into the shop. They checked and said the converter is going bad, and a check of my battery indicated that it would eventually be fried.
The camper is a year and two months old, just out of warranty, but the service manager is going to call the converter company and see if he can get us some help on it.
So glad I took it in.
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I would pay the difference and go with the Progressive. I would not put a WFCO back in. If you want a cheap one I will sell you the one I took out, works fine...... 
__________________
Coachmen M/H
Concord
2018 / 300 DSC
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