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Old 09-05-2012, 09:44 PM   #1
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High pitched noise from fuse panel area - SOLVED

I have a 2005 Palomino Puma 30 ft trailer. I have a high pitched noise coming from my fuse panel area when plugged into shore power 110v. lights will dim and brighten and the pitch of the noise changes as the lights dim and brighten. Also, when I turn on my air conditioning, it tries to work, but then seems to not have enough power and after 15 or 20 seconds it quits trying. Until I turn it off for a minute then it will try again, only to fail. Any help with this electrical problem would be appreciated. thanks
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Old 09-05-2012, 11:15 PM   #2
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probably bad converter cooling fan.
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Old 09-06-2012, 05:36 AM   #3
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Quote:
Originally Posted by mozy View Post
I have a 2005 Palomino Puma 30 ft trailer. I have a high pitched noise coming from my fuse panel area when plugged into shore power 110v. lights will dim and brighten and the pitch of the noise changes as the lights dim and brighten. Also, when I turn on my air conditioning, it tries to work, but then seems to not have enough power and after 15 or 20 seconds it quits trying. Until I turn it off for a minute then it will try again, only to fail. Any help with this electrical problem would be appreciated. thanks
When you say "it seems to not have enough power", have you checked the line voltage. You could have low voltage and start to do damage to your A/C if you continue. Start with making sure you have good power going into your rig before diagnosing the rig itself.
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Old 09-06-2012, 06:24 AM   #4
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If it's a wfco converter most likely bikendan is correct there a converter fan bad.
It needs to be replaced Immediately or your converter/charger will emit smoke and rip.
The fact that the lights are dimming and going bright may be to late. But you need to charge your battery with a separate charger and load tested it may be bad as well.
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Old 09-06-2012, 06:35 AM   #5
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Would the converter have anything to do with the A/C not being able to start?
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Old 09-06-2012, 07:27 AM   #6
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Originally Posted by ttrost65
Would the converter have anything to do with the A/C not being able to start?
No it should not.

Are you sure you don't have low voltage coming in ?
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Old 09-12-2012, 12:37 PM   #7
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Yes, I have enough voltage coming in.
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Old 09-12-2012, 01:38 PM   #8
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Quote:
Originally Posted by ttrost65
Would the converter have anything to do with the A/C not being able to start?
No
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Old 09-12-2012, 01:39 PM   #9
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Originally Posted by mozy
Yes, I have enough voltage coming in.
Hows the condition of your battery?

I also bet you have more than one issue going on here.
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Old 09-12-2012, 01:56 PM   #10
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The battery is good.
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