MTU MS15027/02E Operating Instuctions page 132

536 – AL Wiring PWM_CM1
Red alarm.
Associated parameter 1.1041.921
Cause
Cable break or short circuit on
channel PWM_CM1.
552 – AL GasControlCheck Fault
Red alarm.
Associated parameter 2.1090.118
Cause
Gas train test was not
successful. Alarm is activated if
the gas train does not report OK
within a specified time-out
period. Either the gas train leak
test was not successful, the
time-out period is set too short,
or communication is faulty.
554 – AL Ignition Fault
Red alarm.
Associated parameter 2.1090.122
Cause
Ignition failure. Alarm is
activated if the feedback signal
from ignition system is not
received within a specified time-
out period. Either the ignition
could not be activated, the time-
out period is set too short, or
communication is faulty.
556 – AL GasValve Fault
Red alarm.
Associated parameter 2.1090.124
Cause
Gas supply solenoid valve faulty.
Alarm is activated when
problems with the gas supply
solenoid valves occur. Either the
gas supply solenoid valves are
faulty, the time-out period is set
too short, or communication is
faulty.
132 | Troubleshooting | MS15027/02E 2015-04
Corrective action
u Check cabling to ignition.
Corrective action
1. Check gas train.
2. Check cabling.
Corrective action
1. Check ignition system.
2. Check cabling.
Corrective action
1. Check gas train.
2. Check cabling.