The charging is not the only bug in this post.
Ask the question again please.
"Charging fault" usually means there is a problem with your EVSE, not the car. Which one are you using?
Correct, with J1772 car expects the pilot duty cycle to be set to 100% or constant 12V if the EVSE is to stop charging. If the EVSE just shuts off the pilot signal, that will cause a charge fault because it's not how it's supposed to work according to the J1772 standard. I don't know what the European standard is, but it's probably a similar thing where the EVSE is not doing things correctly. It is also a problem if the duty cycle or 12V is cut off too soon before the high voltage AC is shut off, because the car thinks there's a problem with the EVSE not opening the AC relay. Again, the J1772 standard says you can't do that, so faults will be generated as a result of the EVSE not being compliant with the standards.It seems to me that the car is expecting power to be delivered and it’s getting cut off from your description. The car does not know that charging is being paused, so when it sees that the power it is expecting is terminated, it doesn’t know what id going on. Thus, it thinks there is a fault with the supply equipment. The supply equipment needs to monitor the supply of power and perform a graceful pause of power rather than just going off line due to loss of power.
Your solar is probably cutting off due to lack of sun or insufficient power and the EVSE is not going through a graceful shutdown. Think of it like pulling the plug on your computer instead of shutting down properly, your computer will think there was a fault when it is booted back up.
