MTU 12V4000L32F Operating Instructions Manual page 121

1.4550.136 – B - Temperature derating active
Yellow alarm. Initiated by throttle of cylinder bank B.
Cause
Internal temperature above 100
ºC. Adjustment rate is reduced.
1.4550.137 – B - Temperature above 120 °C
Red alarm. Initiated by throttle of cylinder bank B.
Cause
Internal temperature above 120
ºC.
1.4550.138 – B - Loss of Position Demand
Red alarm. Initiated by throttle of cylinder bank B.
Cause
Position setpoint is missing or out
of range.
1.4550.139 – B - Demand Tracking Fault
Yellow alarm. Initiated by throttle of cylinder bank B.
Cause
Throttle setting is not correct.
1.4550.140 – B - Analog Position Demand Failed
Yellow alarm. Initiated by throttle of cylinder bank B.
Cause
Throttle setting is not correct.
1.4550.141 – B - PWM Position Demand Failed
Yellow alarm. Initiated by throttle of cylinder bank B.
Cause
Throttle setting is not correct.
1.4550.142 – B - CAN Position Demand Failed
Red alarm. Initiated by throttle of cylinder bank B.
Cause
Position setpoint not received or
received too late.
Corrective action
1. Check room temperature and ventilation.
2. Restart throttle.
Corrective action
1. Check room temperature and ventilation.
2. Restart throttle.
Corrective action
1. Check throttle settings.
2. Check cabling (→ Page 202).
Corrective action
u Check throttle settings.
Corrective action
u Check throttle settings.
Corrective action
u Check throttle settings.
Corrective action
1. Check throttle settings.
2. Check cabling (→ Page 202).
MS150104/03E 2017-09 | Troubleshooting | 121