I can only see one supply cable into your iBoost, which presumably comes from your household circut.
I therefore do not believe that your iBoost is capable of supplying DC to the immersion heater.
when the solar generation has spare capacity ( more than the network will or can accept ) the excess is routed to one or two heaters.
if no current is coming into the house ( invertor supplying all the house needs ) then the immersion heater(s) are switched on by connecting to the house 230 V AC wiring.
Yes I have thanks, I had been in contact with them who suggest an option would be to fit the previous model which has AC output but I’m not that keen as it doesnt have a second output. pickup sensor is fitted correctly and the switch has been back replaced
media
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