Hi, I have an issue with my 12v system not working on my caravan, swift challenger 580, 2010, all 230v are working fine, when you turn the power on on the control panel (EC441) It lights up as normal and all 12v systems work normally for about 10 seconds then it shuts down with a loud beeping, press the on button again and the beeping stops but nothing comes on except 2 flashing lights 1 over the diagram of the caravan and 1 over the car, sometimes the system will stay on for upto 6 hours before switching off again, you need to turn the black button off and on again on the PSU EC400 to reset, my original thought was smart charger issue so after speaking to Sergeant Electrical I changed for new one but still same issue. I would be grateful for any info please
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