MTU Gas engine8 V 4000 L62 Operating Instructions Manual page 171

557 – AL speed drop fault
Red alarm. Engine shutdown.
Associated parameter 2.1090.126
Cause
Speed drop. Alarm is activated if
engine speed drops during
starting sequence.
559 – AL mixture throttle A fault
Red alarm. Engine shutdown.
Associated parameter 1.1450.010
Cause
A problem related to mixture
throttle on A side occurred.
Possible causes: Mixture throttle
defective, no power supply to
throttle, cabling of feedback and/
or position signal faulty.
560 – AL mixture throttle B fault
Red alarm. Engine shutdown.
Associated parameter 1.1450.013
Cause
A problem related to mixture
throttle on B side occurred.
Possible causes: Mixture throttle
defective, no power supply to
throttle, cabling of feedback and/
or position signal faulty.
565 – AL L1 P-Intake Air after Filter A
Yellow alarm.
Associated parameter 2.0186.921
Cause
Pressure loss over air filter on A
side is too high.
ZKP-Number:
Corrective action
u Check gas train.
ZKP-Number:
Corrective action
u Check mixture throttle on A side and cabling. Replace mixture
throttle on A side if necessary.
ZKP-Number:
Corrective action
u Check mixture throttle on B side and cabling. Replace mixture
throttle on B side if necessary.
ZKP-Number:
Corrective action
u Replace air filter (→ Page 68).
MS150032/02E 2012-07 | Troubleshooting | 171