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Old 10-08-2015, 07:26 PM   #1
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High pitch noise with coach and chassis disconnected

Have a 2013 Sightseer 33c, even with both chassis and coach switches off, still,have a slight noise in center of coach. Help?
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Old 10-08-2015, 07:33 PM   #2
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illinibill, are you connected to shore power?
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Old 10-08-2015, 07:45 PM   #3
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Inverters make a hum noise...you said you cut off switches was one of those the inverter GlenB
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Old 10-08-2015, 09:13 PM   #4
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Noise

No, we do not have shore power where we store the coach. Other question regarding the inverter. It has a huge power area with all kinds of procedures automatically switched.

The inverter indeed might be the problem. This coach is a 2013 but brand new to me. The inverter is the lowest of the gauges on the panel. It was showing 13 volts and I "assumed" it would go out after a time delay. Wrong????

We will actually take the coach out for its first trial run this coming Monday.
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Old 10-08-2015, 11:38 PM   #5
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On our Suncruiser there is a battery disconnect switch for the inverter separate from the chassis and house disconnects. It is located in the compartment with the inverter.
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Old 10-09-2015, 05:10 AM   #6
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My Atwood water heater control board (on the heater) makes a constant high pitched hum when on, gas or electric it doesn't matter, if it is heating is it humming. Only I can hear it. DW and repair techs can't.
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Old 10-10-2015, 06:57 PM   #7
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I have a high pitched whistle that fades out in a second or two when I switch off the coach batteries. I also had a Journey that did the same thing I think its the carbon monoxide detector.
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