We have had reports from multiple customers that after a firmware update from BMW, the i4 (all trim levels) is no longer able to restart a charge after a pause.
This will mostly occur during surplus solar charging as it's likely that Zappi may need to stop a charge and then recommence.
A proof of concept test to do is as follows:
Plug the car into the charger, give it a couple of minutes to charge, then switch it off at the wall.
Then leave it a good 10/15 minutes still plugged into the car
Then turn the power to the charger back on and see if it allows you to charge.
Assuming it does not, this confirms the theory that the issue is not the result of Zappi.
There does seem to be a lot of noise from the BMW owner's groups around this also
The BMW firmware we are aware that has the issue is Version 07/2023.53
We would urge customers to contact their local BMW dealer or BMW UK to raise concerns or request a possible rollback on firmware.