Turboman6680 Posted December 21, 2013 Share Posted December 21, 2013 Hi folks Just a quickie. Taken my 2008 Adria 502DK out of storage today to bolster the accomodation at the house over the festive period. Just been out and have got the caravan hooked up to the house, went in laid out the bedding strategically to be aired and have put the thermostatically controlled fan heater on however the electric box in the cupboard is buzzing loudly. Switched it on, off, flicked the switch, 'tested' it etc but still remains. When the fanm heater is off and instead i have the outside light on, it still buzzes but alot more quietly? Anything to worry about? I've never heard it on site before? Thanks, David Quote Link to comment Share on other sites More sharing options...
Millstone Posted December 21, 2013 Share Posted December 21, 2013 Check the polarity of the mains connection Quote Lunar Clubman SB 2013 following a Hyundai Tucson MHEV 4x4 2 ltr 185 hp Premium SE (2019) Link to comment Share on other sites More sharing options...
sleepyfolk Posted December 22, 2013 Share Posted December 22, 2013 Does the buzzing sound like the current being drawn is arcing across the contacts in the isolating switch, if this is a new noise to you I would get it checked out, as the louder buzz with a higher load could equal more arcing, more heat and eventually inferno! If it is the isolator it shouldn't take more than 30 minutes to change and they are easy to get hold of if you are happy doing the job yourself, someone might be along with a less doom laden opinion shortly though! Quote Link to comment Share on other sites More sharing options...
sleepyfolk Posted December 22, 2013 Share Posted December 22, 2013 First thing to do might be to make sure there are no loose connections, (isolate the power I. e remove the ehu lead so no one can plug it in) and check all the connections in your fuse/switch panel are tight on the 240v circuit breakers Quote Link to comment Share on other sites More sharing options...
xtrailman Posted December 22, 2013 Share Posted December 22, 2013 Does the Adria have a transformer? Could be the laminates vibrating on it. Quote Link to comment Share on other sites More sharing options...
DACS Posted December 22, 2013 Share Posted December 22, 2013 It could simply be that the battery is low after being in storage and the charger is working harder than usual to charge it up. Quote Link to comment Share on other sites More sharing options...
bspks Posted December 22, 2013 Share Posted December 22, 2013 If you can find the circuit breaker supplying the charger/power supply unit, switch it off. If the buzzing stops, it's just the laminates in the transformer vibrating. If not, it could be a circuit breaker, most are electromagnetically as well as thermally operated and can buzz, especially if working near there maximum limit. Try them one at a time to see if you can isolate the cause. If it does turn out to be one of the breakers check the tightness of the connections. If that doesn't locate it, unplug the 'van and recheck the tightness of all connections in the consumer unit. Plug it back in and see if it's stopped. If not, you need to get it checked by an electrician. See this thread to see what happens if you leave a loose connection http://www. caravantalk. co. uk/community/topic/90069-bailey-discovery-se-limousin-5-berth/ particularly the picture near the bottom. Quote Ssangyong Korando Sports SX / Adria Altea 472DS Eden Link to comment Share on other sites More sharing options...
Brocher12 Posted December 22, 2013 Share Posted December 22, 2013 Which electric box is buzzing, the house one or the caravan one? Quote Link to comment Share on other sites More sharing options...
ericmark Posted December 22, 2013 Share Posted December 22, 2013 There are many things that can cause a 50Hz buzz. As said the lamination in the step down transformer plus the MCB is a duel device and has both a thermal and magnetic trip and the latter can cause buzzing. Also low battery voltage can mean non switch mode power supplies can cause a radio to buzz. Locating which box is buzzing will help working out what is causing it. As to if anything to worry about often it is not my electric screwdriver charger has buzzed for last 25 years seen out around 4 sets of batteries finally put to rest when NiCad batteries became unavailable. But also could be sign of something on it's way out. Quote Link to comment Share on other sites More sharing options...
tictag Posted January 8, 2014 Share Posted January 8, 2014 Turboman> What was the outcome? I'm with DACS and the charger is simply working harder. .. Quote Link to comment Share on other sites More sharing options...
caravantechnology Posted January 20, 2014 Share Posted January 20, 2014 Turboman> What was the outcome? I'm with DACS and the charger is simply working harder. .. I would say this is the most likely cause too if all wiring has been checked. ... if the input voltage was a little high could also be the cause of problem example say mains at your house was at 245+ V which it can easily be then this could be causing the transformer inside the charger to buzz Quote Link to comment Share on other sites More sharing options...
david 1220 Posted January 20, 2014 Share Posted January 20, 2014 Hi, For what its worth -was there a battery fitted to the van at the time ? david Quote Skoda Scout 4x4 pulling a coachman Amara 520/4 at 93%---- when full! Link to comment Share on other sites More sharing options...
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