Hi all, thanks in advance for any help and apologies for such a long post, but wanted to give as much details as possible
I have a caravan with 400ah (delivering 200a continuous) of pylontech lithium batteries. 2000Va multiplus ii inverter/charger, solar charger and bmv, all victron.
induction cooktop is a westinghouse dual cooktop
https://westinghousesmallappliances.com.au/products/westinghouse-dual-induction-cooktop
one hob is 1400w and the other 1000w, when running off the inverter i only use the 1000w hob.
the caravan came with a 1600 multiplus, and the sales person led me to believe it was 1600w (not Va) so i thought i could easily run a 1400w induction cooktop on it. Wrong. It threw a fault and gave me the solid red light alarm on the multiplus. I dind't hear any earlier alarms, if there were any, since it is under a mattress in the caravan. Disconecting the muliplus for 48 hours didn't help, but when it was returned for repair they said it was working just fine, so somehow it reset itself while in transit over a few more days
so, research told me that the 1600 was only good for 1300w continuous, although peaked at over 2000w, so i thought the induction cooktop was peaking for too long for the unit to handle.
I then upgraded to the 2000Va multiplus, this should give me 1600w continuous power.
like the first time, everything worked ok for a few days, then when boilding some water at 800w on the small hob, the multiplus gave out again, and once again gave the solid red alarm light and would not reset.
i am checking on the bmv and it tells me that the watts/amps are in line with what i am expecting the unit to pull. I also use a nespresso machine and it pulls 1500w briefly, so the bms seems to be telling me the right numbers
i am careful not to have several appliances running at once so can be fairly certain that's not the problem
I will be taking it back for repair to the place i bought it from, but i really want to be able to use a induction setup and want some input on what to look for in such a unit.
Since this has happened twice now, i suspect the induction cooker is the cause, but i can't work out why.
is the induction cooktop pulling power in such a way that it is overloading the electronics? square wave instead of sine? I think when running at 800w on the 1000w side, it cycles at 100% for 80% of the time, but that still shouldn't overload the multiplus.
thanks again for reading all this, looking forward to any advice
mark
