I have recently installed new batteries on my Multiplus 24/3000 and since then the fan is running most of the time, while the mains power is on and the charger is on float (i.e. no heavy charging should be happening). Why could that be? I had very depleted batteries before this and in the 6 months I have been running them the fan would hardly come on when in float mode. Nothing changed in the settings of the multiplus, only changed batteries.
