MikeS said:
Are you trying to charge from a standard UK 13A socket? Maybe the car charge rate has to be reduced from max? Only guessing.
Mine works at all three settings, it draws 1.4kWh at low, 1.7 at reduced and 2.25 at max. I too use it in preference to my 32A installed EVSE on days when I have a solar panel surplus and I don't need more charge than the std cable can give me. As the max from my panels is 3.6, giving me a surplus of 3.1-3.4, I don't want to be charging from the 7kWh unit on either setting and unnecessarily drawing from the grid.
Something else which may help the OP: I've also plugged my std cable into the 13A socket via a Belkin WeMo Insight plug which gives me wireless control and shows me the current draw. This means that I can set a time band on the WeMo, which stops the car's off peak management trying to be too clever and charging outside the off peak band when it realises it can't reach 100% solely from charging within the band; it also allows me to switch off from my phone on dull days to prevent drawing from the grid if the car already has sufficient charge for the needs of the day. I have a detached brick garage, separated from the house by a 1.5m wide path and my wireless broadband router happens to be in the room nearest to the garage. The WeMo didn't get a signal when plugged in to the socket at the back of the garage but succeeded when on the sidewall nearest the house, which also happens to be nearest to the car's input socket, so it's clearly fairly sensitive to house/garage layout.
Incidentally, control from the phone only works at home, not remotely.