Last night it has failed as well
22:30-00:00 charge and hold accepted but not actioned
00:00-05:30 charge and hols accepted and not actioned.
In both cases the Inverter is idle, on hold at 6% charge.
What I do see is that the hold command for the first period was sent to the Inverter 17 seconds AFTER the charge instruction for the start of the second period had been sent. But that does not explain why the Inverter did not action the first charge period successfully.