MTU 20V4000L32FNER Operating Instructions Manual page 146

560 – AL mixture throttle B fault
Red alarm. Engine shutdown.
Associated parameter 1.1450.013
Cause
A problem related to mixture
restrictor flap on B side occurred.
Possible causes: Mixture
restrictor flap faulty, no power
supply to restrictor flap, 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.
566 – AL L2 P-Intake Air after Filter A
Yellow alarm.
Associated parameter 2.0186.931
Cause
Pressure loss over air filter on A
side is too high.
567 – AL L1 P-Intake Air after Filter B
Yellow alarm.
Associated parameter 2.0187.921
Cause
Pressure loss over air filter on B
side is too high.
568 – AL L2 P-Intake Air after Filter B
Yellow alarm.
Associated parameter 2.0187.931
Cause
Pressure loss over air filter on B
side is too high.
146 | Troubleshooting | MS150122/02E 2017-09
Corrective action
u Check mixture restrictor flap on B side and cabling. Replace
mixture restrictor flap on B side as necessary.
Corrective action
u Replace air filter (→ Page 186).
Corrective action
u Replace air filter (→ Page 186).
Corrective action
u Replace air filter (→ Page 186).
Corrective action
u Replace air filter (→ Page 186).