MTU 20V4000Lx2x Operating Instructions Manual page 123

634 – SD T0-Ambient Air (HDT2800)
none
Associated parameter 1.0700.089
Cause
Air humidity sensor defect.
635 – SD Air humidity (HDT2800)
none
Associated parameter 1.0700.091
Cause
Air humidity sensor defect.
642 – SD Electr. Motor Power AI2
Yellow alarm.
Associated parameter 2.8006.040
Cause
Engine power sensor defect
(analog input 2).
646 – Al Knock Intensity
Red alarm.
Associated parameter 2.1200.934
Cause
Knock intensity exceeded
(extreme knocking detected).
649 – Al Req Angle Throttle A
Red alarm.
Associated parameter 2.1200.935
Cause
Opening angle of throttles A
exceeded.
Corrective action
u Sensor currently not in standard scope of delivery.
Corrective action
u Sensor currently not in standard scope of delivery.
Corrective action
1. Generator eff. power not correctly transmitted.
2. Generator eff. power can also be transmitted via CAN bus as an
option.
3. Check configuration of plant control system.
Corrective action
1. Check gas quality if feasible (methane number).
2. Check emissions.
3. Check combustion chamber.
Corrective action
1. Check charge-air pressure reserve.
2. Intake air temperature outside TVU data.
3. Check compressor for contamination.
4. Reduce power.
MS150122/00E 2015-07 | Troubleshooting | 123