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Old 01-08-2008, 09:39 AM   #1
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WFCO Converter Hiss

I noticed that my WFCO Converter hissed anytime it had NO load. But turn on a light, and it was gone.

Thought it was just nature of the beast as I have read a few similar comments.

While finally doing some maintenance on the trailer, I checked the water level in the battery. It was low. I added DI water, and let it charge for a while. A few measurements & tests later, I deemed that the battery didn't suffer major damage (held a charge & was load tested).

But the odd thing is the hiss is now gone. Camped the week after Christmas, and at no time did the hiss return. Checked on the camper at the storage facility yesterday, still no hiss.

So... if you start hearing a hiss from your converter, go check the water level in your battery!

Robert & Dawn
2007 Rockwood 2502
2010 F-150 FX4
Equalizer Hitch -w- 1000# bars
Yamaha EF2400iS generator
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Old 01-09-2008, 07:48 PM   #2
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Wow. Good tip!!

  • Salem 401-2b; 31" Sony Trinitron and two channels on the antenna.
  • Smokin' hot wife... 2 boys, 25 and 10.

83 sweet sweet days camped in 2008 - not easy in my neck of the woods!
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Old 01-09-2008, 08:18 PM   #3
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Originally Posted by welshman599 View Post
Wow. Good tip!!
yes sir
thanks, great info
Living in the Piney Woods of Texas.
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Old 01-10-2008, 08:43 AM   #4
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Velly Intelesting
Happy Camping! ///// Richard D.
2006 4x4 Ford 250 SD / 2007 Flagstaff 827 FLS
One very patient wife and one furry child who travels with us. Forty-two years of trailering and camping, and I still have a blast.

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Old 01-10-2008, 09:07 AM   #5
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Location: I live on 12 acres in Cut and Shoot, Texas.
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My RV's have always been parked at my home and plugged in. I have had problems with loosing water in the batteries. A mechanic at an RV center told me to put a timer on the converter, so that it alternated back and forth from converter to battery power. He said the batteries would last much longer. He said to start out with one hour on and one hour off. If the batteries were fine, keep lengthening the time cycle. Trouble is, you don't know when you have lengthened it too long util you boil the water out of the batteries.

Happy camping,
Dizzy Dick (wb3dzy)
Forest River Sunseeker 2900
Jeep Liberty 4x4 Toad
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Old 04-30-2008, 12:27 AM   #6
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Converter hiss

Just a quick comment. I just bought a new tent popup the other day. When I dropped my truck off to get a new hitch put on it they were in the process of preparing my trailer for delivery. They had 120 a/c hooked up to it but no battery in it yet. The converter was hissing just like you mentioned. And the same thing, when you turned on a light, it quit. My guess is that this is normal if there is no battery load or the battery is bad. The guy at the dealership wasn't sure himself why it was doing that but from what I can gather, all WFCO converters are probably going to do this. I haven't opened the trailer up since I got it home to check to see if it's still doing it with a charged battery in place. I'll post again after I check it.
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Old 04-30-2008, 03:30 PM   #7
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I wish I would have seen this I just hooked my battery back up for the season!
Pete (Jolly Mon)

2014 Jayco Whitehawk 24 RBS
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Old 05-02-2008, 01:23 PM   #8
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My WFCO 55 amp converter has a funny sound omitted through the concertone speakers, that sounds like a very low base piano key being played about every 45 seconds. It only does this when the camper is plugged in to the house power. On battery power nothing. My radio was JUST replaced, and so far....(knockonwood), it is functioning properly. I don't think the radio is associated with the "piano" note noise, as the old radio did the same thing. Randy
/SIGPIC]'08 V-lite Flagstaff 30WRLS
'06 Ram 1500 QC hemi Reese dual cam sway control,
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Old 05-03-2008, 07:31 AM   #9
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Great thread posting, I have not any problems like that so far but if I do I know where to start looking. Now as far battery go's, it is my understanding that the battery should be filled when warm or hot not cold. If the battery is added to while cold and then there is a load on the battery for any given time, heat is generated and expansion occurs causeing the water and acid to rise and leak out from the caps on the battery. If so, one might want to remember this and keep an eye on the battery.

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