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Noisy inverter....anyone?

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Lieutenant

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Noisy inverter....anyone?
« on: November 30, 2014, 01:46:04 pm »
Our inverter just started getting "noisy"..anyone have a clue what's happening?  We have a 2012 2910 on a ford 450 chassis

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Barry-Sue

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Re: Noisy inverter....anyone?
« Reply #1 on: November 30, 2014, 01:52:23 pm »
The first thing I would think of is the inverter fan.  Usually these are muffin fans, you can get them at a reasonable price at an electronic store.  If you go to an RV shop they are generally more expensive.

If you hear like a high pitched whine, a constant squeak or shrill sound then I would suspect a bearing in the fan. 
« Last Edit: November 30, 2014, 01:55:56 pm by Barry-Sue »
Barry and Sue 
Current   2012 2551 w/Slide
Previous 2008 2350 w/Slide

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Lieutenant

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Re: Noisy inverter....anyone?
« Reply #2 on: November 30, 2014, 02:06:52 pm »
I took off the bottom panel to expose the fan and it seemed to be operating correctly. It ( inverter) seems to go from a low pitched sound and intensify and get louder

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Bob Mahon

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Re: Noisy inverter....anyone?
« Reply #3 on: November 30, 2014, 11:33:16 pm »
So does mine. But that doesn't seem to be a change from the day we bought it.
Carry on, regardless..................
"In God we trust" to save our country and bring our troops safely home.

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gl1500

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Re: Noisy inverter....anyone?
« Reply #4 on: December 01, 2014, 12:34:24 am »
Only two things that can make an Inverter noisy.  One is mechanical which would be the fan.  The other is the electronics of inverting DC to AC and you would need to be sensitive to the 60 cycle frequency which for the most part is not detectable by the human ear.  Sometimes there are physical parts of the  inverter and other devices that are in the close proximity that will pick up the 60 cycle frequency and resonate mechanically at that rate.  I have seen that happen in aviation.
     Bob

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lmichael

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Re: Noisy inverter....anyone?
« Reply #5 on: December 01, 2014, 02:53:13 pm »
Odds are it's the fan which is normal with PC's.  There's an old string on this forum on fan noise and what some have done from turning the breaker off to installing a switch to turn it off at night