MTU MS15027/02E Operating Instuctions page 110

1.4550.143 – B - CAN Fault (CAN Bus Off, CAN Ad)
Red alarm. Initiated by ProAct B-Bank.
Cause
CAN bus connection faulty.
1.4550.144 – B - CAN Stop Command
Yellow alarm. Initiated by ProAct B-Bank.
Cause
"Stop" command received via
CAN bus
110 | Troubleshooting | MS15027/02E 2015-04
Corrective action
u Check cabling and setting.
Corrective action
u Check setting.