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Old 12-03-2013, 08:25 AM   #1
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Converter Fan cycles every 30 seconds

Since I brought home my Work and Play I have heard the converter fan come on every 30 seconds. It starts off by a slight hissing noise then both cooling fans come on for about 2 seconds and they shut off. You can almost set you watch by it. This is with no load except for maybe a light.

I did some searching on here and found that some people are pointing towards a battery issue but nothing that fits my problem exactly.

Any electronic folks have ideas??
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Old 12-03-2013, 09:21 AM   #2
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Originally Posted by tarfele View Post
Since I brought home my Work and Play I have heard the converter fan come on every 30 seconds. It starts off by a slight hissing noise then both cooling fans come on for about 2 seconds and they shut off. You can almost set you watch by it. This is with no load except for maybe a light.

I did some searching on here and found that some people are pointing towards a battery issue but nothing that fits my problem exactly.

Any electronic folks have ideas??
I'd suggest putting a volt/ohm meter on your battery and watch the voltage rise and fall. "Post results"
Fans kick on when the converter is charging at a high rate.
Just because your battery is new does not mean that it does not have an issue.

If you don't have a volt ohm meter, now is a good time to buy one to keep in the camper.

Not saying that the converter doesn't have an issue but its possible as well.

One thing you can do "after" you test battery voltage to see what the converter is putting out is to unhook battery cables and see if converter still does its current symptoms.

Turbs
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Old 12-03-2013, 10:13 AM   #3
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It'd be interesting to know if the converter's cooling fans are activated through a temperature sensor or if they just automatically turn on if the converter is in any mode other than the lowest...float mode.

Anyways a 30 sec cycle of 2 sec duration isn't right. Excellent suggestion from 'Turbs' to troubleshoot the issue.

Dave
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Old 12-03-2013, 07:35 PM   #4
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I unhooked the battery and it continued to do the same thing.
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Old 12-03-2013, 07:38 PM   #5
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I unhooked the battery and it continued to do the same thing.
Did you take voltage readings?
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Old 12-03-2013, 07:56 PM   #6
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Not yet, no volt meter. Will pick one up tomorrow
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Old 12-03-2013, 07:58 PM   #7
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Quote:
Originally Posted by tarfele
I unhooked the battery and it continued to do the same thing.
Like Dave, sounds like a thermal switch is bad inside. With a inexpensive converter, there is no provision for current flow, they rely on temp rise for cooling. Suggest live with it or contact Mfg for user parts inside. Biggest risk is fan may not run when needed.
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Old 12-03-2013, 08:09 PM   #8
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Not yet, no volt meter. Will pick one up tomorrow
That will tell a better tale.

Let us know what you find.

Btw a volt/ohm meter is a must in a camper.

Turbs
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Old 12-03-2013, 08:58 PM   #9
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Chances are good it's a WFCO and better chance it's fried.
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Old 12-03-2013, 11:09 PM   #10
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Fans did same thing...

Had the same symptoms (fans cycling on / off) and was at a loss for what was happening. When setting up the trailer, I unknowingly pulled the emergency brake switch cable, thus the 12v electric brakes on all 4 wheels were constantly activated.. the converter / batteries were always trying to keep the power to them... once the pulled cable was discovered 4 days later and reset, the problem went away... Just an idea...
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