So, I seem to have the opposite problem to everybody else. I have a 24/5000 multiplus and 838ah FLA
Multiplus runs my washing machine perfectly off the batteries, including heating the water.
As soon as I connect my generator to charge, the washing machine fails in varying degrees. It sometimes resets the cycle, LEDs come on and off and there doesn't seem to be any set regime to it, it throws up the problems when the batteries are charging or in float.
This is frustrating because I have to run the washer off the batteries, which, during the heating cycle, if there's no solar, pulls the voltage down to below where I feel safe. I cannot supplement with gen power and so have to pause the wash cycle to let the batteries recover, and then let it continue heating the water.
Is this a generator frequency problem? Is there a way to stop the multiplus passing through the gen power, use the gen solely to charge and invert the power from the batteries? I know this is wasteful but it seems my only option.
This leads to my last question, what voltage is it safe to draw my batteries down to when heating water. Given that once the element in the washer is off, the batteries bounce back to 25.4/5 in a matter of minutes, but if allowed to heat for the full duration the voltage could be as low as 23.6. I cannot find any info on what is a safe voltage for quick but heavy discharge. The victron low battery cut out is 18v which seems very low!
TIA