Ive just updated to the latest firmware hoping to eliminate a problem that i have been having for some time now, when the level sensor comes on and starts to top up the tank, after 3/4 seconds it trips out the whole plug bar. It comes back on approx 20 seconds later, i have tried disconnecting some items but it does not make any difference, im thinking of buying a new float switch. any suggestions?

The unit is about a year old.