MTU 12 V 4000 Lx4 Operating Instructions Manual page 134

583 – AL GLS closed
Red alarm. Engine stop.
Associated parameter 2.0451.115
Cause
Generator load switch does not
open when engine stops. Engine
is motoring.
609 – AL Wiring PWM_CM7
Red alarm.
Associated parameter 1.1041.927
Cause
Cable break or short circuit on
channel PWM_CM7.
617 – LO Current net calorific value
Yellow alarm.
Associated parameter 2.1210.006
Cause
Fuel calorific value has fallen
below the first limit value.
618 – LOLO Current net calorific value
Yellow alarm.
Associated parameter 2.1210.007
Cause
Fuel calorific value has fallen
below the second limit value.
619 – HI Current net calorific value
Yellow alarm.
Associated parameter 2.1210.008
Cause
Fuel calorific value has
exceeded the first limit value.
620 – HIHI Current net calorific value
Yellow alarm.
Associated parameter 2.1210.009
Cause
Fuel calorific value has
exceeded the second limit value.
134 | Troubleshooting | MS15027/00E 2013-10
Corrective action
1. Check generator load switch.
2. Disconnect generator switch manually.
3. Open mains power switch if available.
4. Do not actuate manual emergency off if possible.
Corrective action
u Check cabling to the Nox sensors and to the air humidity
sensor.
Corrective action
u Check gas quality if feasible.
Corrective action
u Check gas quality if feasible.
Corrective action
u Check gas quality if feasible.
Corrective action
u Check gas quality if feasible.