MTU 12V2000Gx6 series Operating Instructions Manual page 99

383 – AL Wiring TOP 3
Yellow alarm; warning
Cause
Short circuit or wire break on
transistor output 3 plant-side
(TOP 3).
384 – AL Wiring TOP 4
Yellow alarm; warning
Cause
Short circuit or wire break on
transistor output 4 plant-side
(TOP 4).
390 – AL MCR exceeded
Yellow alarm; warning
Cause
DBR/MCR function: MCR
(continuous maximum rate) was
exceeded.
400 – AL Open Load Digital Input 1
Yellow alarm; warning
Cause
Line disruption at digital input 1.
401 – AL Open Load Digital Input 2
Yellow alarm; warning
Cause
Line disruption at digital input 2.
402 – AL Open Load Digital Input 3
Yellow alarm; warning
Cause
Line disruption at digital input 3.
403 – AL Open Load Digital Input 4
Yellow alarm; warning
Cause
Line disruption at digital input 4.
Corrective action
u Check wiring (→ Page 221).
Corrective action
u Check wiring (→ Page 221).
Corrective action
1. No action required if alarm only applied temporarily.
2. Contact Service if alarm applied constantly.
Corrective action
u Check wiring (→ Page 221).
Corrective action
u Check wiring (→ Page 221).
Corrective action
u Check wiring (→ Page 221).
Corrective action
u Check wiring (→ Page 221).
MS15054/03E 2018-07 | Troubleshooting | 99