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-   -   High Pitch Squeal ? (https://www.forestriverforums.com/forums/f113/high-pitch-squeal-26977.html)

camper22 07-29-2012 02:23 PM

High Pitch Squeal ?
 
We just bought a 2007 Surveyor 210T and I was out cleaning and putzing in it. Since today is very hot I turned the A/C on and the fan works, but when the AC unit goes to kick it everything in the trailer shuts off and restarts. I assume there is an inline fuse or something?
I decided to continue on cleaning and after about 20 minutes a high pitched squealing noise came from somewhere.... I had to shut off all of the fuses to make it stop.
Any ideas? I didn't have anything on when that happened, no lights, no fridge, AC ... nothing.

KarenKamper 08-26-2012 08:47 PM

Wondering if you ever found out what made the high pitch squealing noise?

I just had the Dometic frig recall completed along with other fixes (new pipes, seals, vents, mud daubers removed from air conditioner, etc) and went camping about 3 weeks ago. (The camper had been stored for about a year.)

After 2 days of camping, when we went to leave there was a high pitched squealing coming from below the frig as soon as I unplugged the trailer. It would stop when I plugged the AC trailer in, but then would start as soon as I unplugged it. Also, the frig didn't seem to switch from AC to gas even though I had it set to do so. (it should have been set correctly - frig=on, auto=on)

It sounds like some kind of warning. I asked the dealer (after driving home with the thing squealing) and they said that the battery may be dead and I would need to get a new battery, but the battery was dead before the camping trip began and it didn't squeal while unplugged.

I AM going to get a new battery this week, but, it still seems strange that the squealing would just start up after a camping trip.

I have the trailer plugged in, in the driveway, even though the frig is off (and left opened) just to keep the squealing sound off.

I usually have it plugged in unless I am storing it (then I open the frig and turn it off completely), then I unplug it and it usually doesn't "squeal".

Forest River Cardinal TT, year - 2005, Dometic Frig - recall fixed

Any help appreciated. I know enough to be dangerous... :)

OldCoot 08-26-2012 08:49 PM

Quote:

Originally Posted by KarenKamper (Post 243404)
Wondering if you ever found out what made the high pitch squealing noise?

I just had the Dometic frig recall completed along with other fixes (new pipes, seals, vents, mud daubers removed from air conditioner, etc) and went camping about 3 weeks ago. (The camper had been stored for about a year.)

After 2 days of camping, when we went to leave there was a high pitched squealing coming from below the frig as soon as I unplugged the trailer. It would stop when I plugged the AC trailer in, but then would start as soon as I unplugged it. Also, the frig didn't seem to switch from AC to gas even though I had it set to do so. (it should have been set correctly - frig=on, auto=on)

It sounds like some kind of warning. I asked the dealer (after driving home with the thing squealing) and they said that the battery may be dead and I would need to get a new battery, but the battery was dead before the camping trip began and it didn't squeal while unplugged.

I AM going to get a new battery this week, but, it still seems strange that the squealing would just start up after a camping trip.

I have the trailer plugged in, in the driveway, even though the frig is off (and left opened) just to keep the squealing sound off.

I usually have it plugged in unless I am storing it (then I open the frig and turn it off completely), then I unplug it and it usually doesn't "squeal".

Forest River Cardinal TT, year - 2005, Dometic Frig - recall fixed

Any help appreciated. I know enough to be dangerous... :)

Could be the converter fan needs lubricated or replaced.

KarenKamper 08-26-2012 08:57 PM

Is that located under the frig? (I suppose it depends on the model, duh)

Also, there is a green light that goes on and off. If it's plugged in, no squealing = green, not plugged in, squealing = yellow (I'm pretty sure, was concentrating on the noise not the color)

It doesn't really sound like a fan as it is constant, high pitched and same level. I had my son come out and listen and he said it sounded like a "warning".

Just a little concerned as I just saw pics of someone whose Dometic frig caught on fire and burned up their motorhome... Yikes...

traveler2955 08-26-2012 08:57 PM

Shot in the dark:

I'm uncertain just how many fuse/brekerss you pulled, and if these were the AC or DC or both.

However, did you check your converter?

KarenKamper 08-26-2012 09:15 PM

I didn't touch the fuse box and pull or flip the switches at all.

After camping, I unplugged the trailer from the post at the campsite when we were ready to leave. That's when the squealing started.

So, no fuses pulled, always plugged into AC either at home or at campsite. (Or completely unplugged and not used and no squealing.)

I guess what I'm hearing is that it may not be the battery, but the converter.

I will be getting a new battery anyway... but it looks like I will have to bring it back to service to check the converter as I'm not very mechanical.

I appreciate all the help.

EandMEcamping 08-28-2012 12:15 PM

I had the same issue with my new 312BHX. The converter cooling fan made a high pitch squealing noise during our first day with the new camper. It squealed for about a minute then stopped. The main power breaker tripped. I had to re-set the main power breaker a few times because the cooling fan was not working. I brought it to the dealer and they could not get it to repeat. The cooling fan is working for now. The dealer told me they can’t replace the converter under warranty until the fan stops completely. I am considering upgrading the converter.

KarenKamper 08-28-2012 10:07 PM

Sounds like this is going to be one of those ghost things. It works at the shop, but doesn't when you are at the campsite...

TURBS 08-28-2012 10:13 PM

Quote:

Originally Posted by EandMEcamping
I had the same issue with my new 312BHX. The converter cooling fan made a high pitch squealing noise during our first day with the new camper. It squealed for about a minute then stopped. The main power breaker tripped. I had to re-set the main power breaker a few times because the cooling fan was not working. I brought it to the dealer and they could not get it to repeat. The cooling fan is working for now. The dealer told me they can’t replace the converter under warranty until the fan stops completely. I am considering upgrading the converter.

You can just up grade the fan to something better I actually added another fan to the already 2 in my wfco converter.

If does ever go it's getting a progressive dynamics period !

TURBS 08-28-2012 10:20 PM

Quote:

Originally Posted by KarenKamper
Sounds like this is going to be one of those ghost things. It works at the shop, but doesn't when you are at the campsite...

Karen honestly the fan is the weak link in a wfco converter to which I'm guessing you have .

My last tt had a wfco converter in it and the fan gave up the ghost and overheated the converter.
I modded in a progressive dynamics converter/charger into my wfco housing and worked fine.

I now have a palomino sabre with the same wfco converter but noticed wfco now installs two fans instead of one.
One sucks in cool air whilst the other exhausts warm or hot air.
The fans are designed to rotate slowly with small or little load and then ramp up in speed as more power is required.
I added a third fan with a switch and run it at full speed 24/ 7 while camping.
To aid in better cooling.
Ron

KarenKamper 08-28-2012 10:33 PM

OK. I just got the name of a guy in town who does work from his house and everyone here says he's good.

I'm going to print these responses and bring it to him (after Labor Day weekend :) and see if he'll fix this stuff.

I don't think it will hurt to have the squeal on the way to the camp-site and back. It's only about an hour away...

Thanks for everyone's help. (I'm not mechanical, but I hate it when I bring it in and no one believes what I say...)

TURBS 09-10-2012 08:07 PM

Quote:

Originally Posted by KarenKamper (Post 244560)
OK. I just got the name of a guy in town who does work from his house and everyone here says he's good.

I'm going to print these responses and bring it to him (after Labor Day weekend :) and see if he'll fix this stuff.

I don't think it will hurt to have the squeal on the way to the camp-site and back. It's only about an hour away...

Thanks for everyone's help. (I'm not mechanical, but I hate it when I bring it in and no one believes what I say...)

so how did you end up ? :trink39:

KarenKamper 09-11-2012 06:02 PM

Well, I booked a flight to WI instead... LOL

But, actually, by replacing the battery, the squeal stopped. So, maybe that IS all that was needed.

Right now, after the Labor Day weekend, I have it plugged in. I will have to leave it like that til I get back from my trip. Then, unplug it and hope it was just the battery. I would still like to add the kill switch....

TURBS 09-11-2012 06:07 PM

Quote:

Originally Posted by KarenKamper
Well, I booked a flight to WI instead... LOL

But, actually, by replacing the battery, the squeal stopped. So, maybe that IS all that was needed.

Right now, after the Labor Day weekend, I have it plugged in. I will have to leave it like that til I get back from my trip. Then, unplug it and hope it was just the battery. I would still like to add the kill switch....

Definitely add the battery disconnect!

I leave my camper plugged in all year round.
Some are not able to do that.

camper22 09-15-2012 09:05 AM

I am not sure what it was but what I did was used a different extension cord with bigger gauge wire. I have not heard any squealing since

KarenKamper 09-15-2012 10:33 AM

Quote:

Originally Posted by camper22 (Post 252237)
I am not sure what it was but what I did was used a different extension cord with bigger gauge wire. I have not heard any squealing since

Interesting because I usually use the house connect at the site and now I'm using the 30 amp connection at the site and only use the house connect at the house.

Does anyone know how long it generally takes the battery to gain full strength?

I don't think I'll have time to mess with it before I leave, so the battery will be charging for about a month before I can get out there and disconnect it.

(Oh, how did I think I could just buy more toys and not have to mess with them??? :rolleyes:)

Triguy 09-15-2012 11:08 AM

2 Attachment(s)
Quote:

Originally Posted by KarenKamper (Post 252263)

Does anyone know how long it generally takes the battery to gain full strength?

Karen,

4-5 hours to do it right with a decent converter or the appropriate charger, but just a few hours to get to a 90% state of charge (SOC). That is the quick answer. But, that is the minimum time.

Batteries like to be charged slow and fully and then stayed charged, so its better to err on the side of charging longer than that. This is fine if you are doing it though your trailer's converter (assuming its a three-stage).

Read on if you want a little more...

The better answer is that it depends on the size of the battery, how run down it is, how much current is supplied from the converter/charger and how good that charger is - one-stage or three-stage.

So, for a small group 24 discharged to 50%, which you don't want to go below, its usually a few hours to get to 90% but then the amps drop way down and it will take several more hours to fully charge to a 100% SOC. This can be much longer with a bigger battery and much much longer with a trickle charger.


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