556 – AL GasValve Fault
Red alarm.
Associated parameter 2.1090.124
Cause
Corrective action
Gas supply solenoid valve faulty.
Alarm is active if there are
problems with the gas supply
solenoid valves. Either the gas
supply solenoid valves are faulty,
the timeout period is set too
short, or communication is faulty.
1. Check gas train.
2. Check cabling.
557 – AL speed drop fault
Red alarm. Engine shutdown.
Associated parameter 2.1090.126
Cause
Corrective action
Speed drop. Alarm is activated if
engine speed drops during
starting sequence.
u
Check gas train.
559 – AL mixture throttle A fault
Red alarm. Engine shutdown.
Associated parameter 1.1450.010
Cause
Corrective action
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.
u
Check mixture throttle on A side and cabling. Replace mixture
throttle on A side if necessary.
560 – Mixture throttle B
Red alarm. Engine shutdown.
Associated parameter 1.1450.013
Cause
Corrective action
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.
u
Check mixture throttle on B side and cabling. Replace mixture
throttle on B side if necessary.
MS150098/02E 2016-11
| Troubleshooting | 115
TIM-ID: 0000027858 - 001
