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05-21-2020, 07:47 PM
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#1
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Junior Member
Join Date: May 2020
Location: Richmond
Posts: 3
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Buzzing breaker panel
Just got this 18 year old hornet. Plugged camper into my house receptacle. Had the refrigerator on, a few lights and then turned on the kitchen hood/ exhaust fan. I heard the panel trip, lights out. I then Reset the house receptacle and now there is a distinct buzz sound coming from panel. I manually turned off the breakers and the sound went away. I then turned them back on and sound is back. All the lights work, fridge running, etc, but buzz/humm remains. What should I do?
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05-21-2020, 08:18 PM
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#2
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Senior Member
Join Date: Dec 2019
Location: Oregon High Desert
Posts: 1,553
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Greetings and welcome to the forum!
Breakers sometime buzz when current is flowing thru them. I would turn them all off, then on and off, one at a time, to see if you can find the culprit. If none do, then try turning one on, then the next and so on. It may be the master breaker causing the buzz as well.
Another possibility might be loose wiring at the rear of the panel.
Just a few ideas, I know another member more learned than myself will offer help soon.
Take care!
__________________
Gary & Deb (44 years)
RV: Keystone 2013 Alpine 3495FL
TV: 2014 RAM 3500HD Laramie Long Box, 6.4 HEMI, 4x4, 4.10's, with Mopar Puck system, and a B&W Companion hitch.
Retired Firefighter/EMT.
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05-21-2020, 08:29 PM
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#3
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Site Team
Join Date: Oct 2011
Location: Joppa, MD
Posts: 11,751
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Quote:
Originally Posted by Bdwatson27
Just got this 18 year old hornet. Plugged camper into my house receptacle. Had the refrigerator on, a few lights and then turned on the kitchen hood/ exhaust fan. I heard the panel trip, lights out. I then Reset the house receptacle and now there is a distinct buzz sound coming from panel. I manually turned off the breakers and the sound went away. I then turned them back on and sound is back. All the lights work, fridge running, etc, but buzz/humm remains. What should I do?
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More than likely you are hearing the converter. The converter charges the battery and supplies 12vdc power for the lights, exhaust fan, fridge controls, furnace, water heater gas igniter, and TV antenna amplifier and stereo radio. I'm guessing the old trailer has incandescent bulbs in the lights not less and the battery is most likely old and dead causing the old converter to work hard.
__________________
Marshall
2012 Laredo 303 TG
2010 F250 LT Super Cab, long bed, 4X4, 6.4 Turbo Diesel
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05-21-2020, 09:26 PM
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#4
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Senior Member
Join Date: Dec 2019
Location: Oregon High Desert
Posts: 1,553
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Thank you Marshall, I had not considered the converter. When they are working hard, they do buzz a bit.
Cheers!
__________________
Gary & Deb (44 years)
RV: Keystone 2013 Alpine 3495FL
TV: 2014 RAM 3500HD Laramie Long Box, 6.4 HEMI, 4x4, 4.10's, with Mopar Puck system, and a B&W Companion hitch.
Retired Firefighter/EMT.
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05-22-2020, 04:42 AM
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#5
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Site Team
Join Date: Oct 2011
Location: Joppa, MD
Posts: 11,751
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I'd let it charge 24 hrs and disconnect the battery for at least an hr then check the voltage. Best to have it load tested but that's a start. While it's setting for an hour go record the date codes on those tires. Then take a good look see under, in and on top the trailer. Enjoy.
__________________
Marshall
2012 Laredo 303 TG
2010 F250 LT Super Cab, long bed, 4X4, 6.4 Turbo Diesel
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05-22-2020, 04:46 AM
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#6
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Senior Member
Join Date: Jan 2015
Location: Northeast Florida/Southeast Maine
Posts: 784
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Welcome to the forum.
Aren't hornets supposed to buzz?
I had an issue like this with the S&B panel; faulty breaker. Replaced and the noise went away.
__________________
Now: 2019 Winnebago 2500FL w/e2 WDH;Sold: 2015 Bullet Premier 19FBPR (shown)
2012 Ford F-250 Lariat Super Duty Crew Cab (gas 6.2 L, 3.73 gear ratio 2WD, 172" WB)
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05-22-2020, 05:18 AM
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#7
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Junior Member
Join Date: May 2020
Location: Richmond
Posts: 3
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I turned off the breakers one by one and the noise stops when main and gfi are off. The noise was definitely coming from the bottom half of panel. So maybe just replacing breakers should solve it?
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05-22-2020, 05:49 AM
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#8
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Site Team
Join Date: Oct 2011
Location: Joppa, MD
Posts: 11,751
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Quote:
Originally Posted by Bdwatson27
I turned off the breakers one by one and the noise stops when main and gfi are off. The noise was definitely coming from the bottom half of panel. So maybe just replacing breakers should solve it?
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By default, turning the "main" breaker will kill everything. So did you mean main OR gfi?
__________________
Marshall
2012 Laredo 303 TG
2010 F250 LT Super Cab, long bed, 4X4, 6.4 Turbo Diesel
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05-22-2020, 10:57 AM
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#9
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Junior Member
Join Date: May 2020
Location: Richmond
Posts: 3
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Sorry, I meant when I flip the main breaker off with the other still on the buzzing stops. Once I turn them back on I then only turn off the gfi breaker and the buzzing stops.
I am charging the battery now.
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05-22-2020, 11:42 AM
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#10
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Senior Member
Join Date: Feb 2015
Location: Texas
Posts: 1,090
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Quote:
Originally Posted by Bdwatson27
Sorry, I meant when I flip the main breaker off with the other still on the buzzing stops. Once I turn them back on I then only turn off the gfi breaker and the buzzing stops.
I am charging the battery now.
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In my camper the power for the converter comes from the same breaker as some of the receptacles, I think the label on that breaker is con/rec.
The converter has an internal fan and when it is working, providing power to lights, charging the batteries, or other 12 volt items the fan will run to keep it cool.
-Brian
__________________
2014 Bullet Premier 22RBPR - let the camping commence!
2013 F150 Platinum - 5.0 - 3.55 ELD + towing package
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05-22-2020, 02:11 PM
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#11
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Senior Member
Join Date: Dec 2019
Location: Trinidad,TX
Posts: 975
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Leave the main on, turn off the individual breakers, then turn them on one at a time to determine which one is humming.
__________________
Woody
Cedar Creek Lake, Texas
2019 Laredo 290 SRL
2019 Ram 2500, 4x4, Cummins diesel
Andersen hitch
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