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Old 05-21-2014, 12:54 PM   #1
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Inverter buzzing?

I have a new Crusader 296BHS. It seems when the batteries are charging, that there is a high pitched buzzing noise -- very obnoxious sound right at the circuit breaker panel by the stairs.

I'm guessing that it is happening during battery charging because I tend to hear it when I plug in to shore power and after awhile it goes away (awhile could be 20 minutes).

The dealer today told me that all of the trailers do it and that it is the inverter making the sound and that it is normal. I assume they say "all" they mean Crusader but they didn't clarify that.

I've got experience with computers and electronics and this buzzing/pitch noise does not sound intentional to me.

Is this normal?
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Old 05-21-2014, 12:58 PM   #2
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I think this may be your converter buzzing not your inverter.
If it's under warranty take it back.

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Old 05-21-2014, 09:37 PM   #3
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They don't all do it. The better quality ones, such as those used in Airstream's don't make that noise, at least the one that the Airstream dealer put in my previous Forest River Grand Surveyor was quiet - it was an emergency repair on New Years Eve on the way to Arizona

My 2012 Lacrosse has a noisy (a.k.a. cheap) convertor that needs a cooling fan to run whenever it has to power more than about 4 overhead lights. It's totally quiet at low loads, but produces a very irritating high pitched whine when loaded. My solution was to take it to the Airstream Dealer to solve a noisy furnace (that drowned out the TV) and irritating convertor issue. He moved the convertor deeper into it's cabinet, redirected the cold air return into the space the convertor occupied, blanked off the existing return, and used lot's of sound deadening Roxul insulation in appropriate places.

I had no luck getting my PT Dealer to replace the convertor - I also got the "they all do it" response.

Bob
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Old 05-22-2014, 12:01 PM   #4
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My Tracer does it also, usually with 4 or more overhead lights on.. Not loud, but I can hear it. I'll follow this thread to see if anyone has any ideas.
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Old 05-22-2014, 12:15 PM   #5
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I've got an answer especially if it's a Wfco converter.
Throw it in the trash and buy a good one such as a progressive dynamics brand.
Jmo.

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Old 05-22-2014, 12:25 PM   #6
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I'll look into that TURBS
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Old 05-22-2014, 01:11 PM   #7
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I'll look into that TURBS
You won't be disappointed.
BTW you should get the pd unit with "remote pendent"
Check out pd's website.
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Old 05-22-2014, 02:13 PM   #8
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I get a high pitched noise but only randomly when my heater is running which happens to be right next to converter. Are you sure it's the converter? I'm out in mine now for 10 days and haven't heard the noise once but I haven't ran the heater either. Been running a/c.
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Old 05-22-2014, 03:48 PM   #9
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It's the fan for the converter. I noticed that when I had just a couple of lights on, the fan would turn on and vibrate. Drives me nuts. But once I replaced all the lights with LED, the fan literally never comes on now, even with all the lights on. There's a chance it comes on when the furnace runs, but I can't hear that over the noise of the furnace.
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Old 05-22-2014, 04:00 PM   #10
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It's the fan for the converter. I noticed that when I had just a couple of lights on, the fan would turn on and vibrate. Drives me nuts. But once I replaced all the lights with LED, the fan literally never comes on now, even with all the lights on. There's a chance it comes on when the furnace runs, but I can't hear that over the noise of the furnace.
The biggest downfall of a Wfco converter is the fan/ fans
They cool the unit and if they quit then soon after your converter will let out the magical puff of smoke.
When there making noise it's obvious that before long they will stop all together. .......💨🔥

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