I have one “special” Cell module. It think’s that an external temp sensor is connected.
Reconnecting to the Battery or reflashing didn’t fix it.
It will be replaced now with a spare board.
How can I do some further investigations on this behaviour?
I have also had such a problem, if your module is v4.21 version, check your R21 resistance welding situation, false soldering will occur! The power supply of the module must be disconnected for welding! Caution!