Hi,
I have two Phoenix Smart Charger IP43 50A. Both today stopped charging with the alert "Maximum Bulk Time Exceeded" after only 1.5hrs plugged into AC. The battery bank is a 600ah Smart Lithium 12v bank that was c45% charged.
I've disabled the setting and they are both working fine... but I found this behaviour very strange. I can post screenshots of the Victron Connect history if that helps.