Ip43 12/50 1+1 Bulk error message

[mewgaf (mark)]

Hi All
For the first time I’m experiencing problems with a Phoenix IP43 12/50 1+1.
It has displayed 2 faults.

1. Charger - BatteryCharger 50A [279] Charge state: Fault
2. Charger - BatteryCharger 50A [279] Error: Err 20: Bulk time limit reached
   Yet the charger has only been on for 3hr 48m.

I changed the Bulk Time limit from 10hr to 12Hrs, but this did not fix the problem. Normal operation only started after I turned off Bulk Time.
Is this a firmware bug??