Hi Ant,
When the van is on EHU and the isolation switch by the zig unit is turned off, am I right in thinking that the lights and other 12v electrics would be working by drawing power from the leisure battery, the battery would not be charging, but there would still be mains power available through the 3-pin mains sockets and the fridge would also work on the mains setting?
(If so, it would explain why my leisure battery ended up flat after a recent outing even though I was on EHU........... the isolation switch might have been accidentally left in the 'off' position without me noticing because everything still worked.............. as I said, an idiot's question!
) The battery itself seems OK and has just been checked and passed as fit for purpose by the garage, so I can't think why else it would have done this.
As an aside, is it really necessary / advisable to turn the isolation switch off before connecting to EHU and then back on again, as recommended in the handbook?
When the van is on EHU and the isolation switch by the zig unit is turned off, am I right in thinking that the lights and other 12v electrics would be working by drawing power from the leisure battery, the battery would not be charging, but there would still be mains power available through the 3-pin mains sockets and the fridge would also work on the mains setting?
(If so, it would explain why my leisure battery ended up flat after a recent outing even though I was on EHU........... the isolation switch might have been accidentally left in the 'off' position without me noticing because everything still worked.............. as I said, an idiot's question!

As an aside, is it really necessary / advisable to turn the isolation switch off before connecting to EHU and then back on again, as recommended in the handbook?
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