This
@duderoo you kind of shot your self in the foot - because you switched it off it had to work harder when you switched it on - keeping freezers closed is more effective then switching it off and opening and closing the freezer doors.
With your panels being east / west you may need to change your times, as your curve will be different to us with North panels , you may need to shift that geyser switch on / off earlier - (or later but as you home later and probably use more in the evening I would say earlier) - but definitely look at its temp