Solar iboost not working

[bmcn85]

We have had solar Iboost+ installed in 2018, but it was bought in mid 2016, direct.

It runs 2.5kw oil heater, & has always worked fine. However at 8pm tonight, in walking past it, it was red hot,
the solar panel display said it was off, & it had saved 4.6kwh today, however a bit later it said it had saved 16.4
today, & bit later it had saved NIL, I tested out the connections, with no solar panel power being produced,
On the IBoost, the input was 240v, but circuit A, ** was 520V no load ** B=Nil. Unit said it was OFF.

I have emailed Marlec tonight, this is very concerning, I would have hoped it it went defective, it would be dead,
520v live, when you expected it to be off, & it said it was off, could have been a killer.

We have had solar Iboost+ installed in 2018, but it was bought in mid 2016, direct.

It runs 2.5kw oil heater, & has always worked fine. However at 8pm tonight, in walking past it, it was red hot,
the solar panel display said it was off, & it had saved 4.6kwh today, however a bit later it said it had saved 16.4
today, & bit later it had saved NIL, I tested out the connections, with no solar panel power being produced,
On the IBoost, the input was 240v, but circuit A, ** was 520V no load ** B=Nil. Unit said it was OFF.

I have emailed Marlec tonight, this is very concerning, I would have hoped it it went defective, it would be dead,
520v live, when you expected it to be off, & it said it was off, could have been a killer.

I've also just had this fault. The unit shows 'Water not heating' but the blue lightning symbol flashes. The iboost buddy was showing as importing 3kw so I checked the unit and it was heating immersion heater 1 (showing 480v). I also noticed that even when the panels are producing (say 800w), the unit will show 'heating by solar 2.7kw'. Yet the iboost buddy will show as importing 2kw.