Display text
Meaning
Measure
RL 211+A004-EMU
EMU 1 not recognized on redundant
bus
1. Check LOP visually (→ Page 157);
2. Perform LOP test procedures
(→ Page 160);
3. Contact Service.
• Have EMU checked and re‐
placed, if required.
SS Safety System
Failure (EMU)
Safety system has determined fault on
Engine Monitoring Unit
contact Service.
SS Power Reduction
Active
Safety system has requested power
reduction
1. Determine cause for automatic
power reduction;
2. Observe further display messages/
alarms;
3. Contact Service.
SS Emergency Stop Safety system has triggered emergen‐
cy stop
1. Determine cause for shutoff and
rectify;
2. Observe further display messages/
alarms.
SS Emergency Stop
External
Safety system has carried out an ex‐
ternally triggered emergency stop
1. Determine cause for shutoff and
rectify;
2. Observe further display messages/
alarms.
SS P-Coolant
Safety system detects that coolant
pressure is too low
Check coolant level and top up if re‐
quired (→ Page 129).
SS P-Lube Oil (ECU) Safety system detects that engine oil
pressure is too low
1. Check lube oil level and top up if
required (→ Page 120) .
2. Contact Service.
SS P-Lube Oil (EMU) Safety system detects that engine-oil
pressure is too low
1. Check lube oil level and top up if
required (→ Page 120) .
2. Contact Service.
SS Security Channel
Def EMU
Safety system fault message
Contact Service.
• Have EMU checked and replaced, if
required.
SS SDAF closed
Safety system reports closed emer‐
gency-air shutoff flaps
Open emergency-air shutoff flaps
(→ Page 117).
SS Security Shut‐
down
Safety system has caused emergency
stop
Determine cause for shutoff and recti‐
fy.
SS T-Coolant (ECU) Safety system has determined that the
coolant temperature is too high
Reduce power.
SS T-Coolant (EMU) Safety system has determined that the
engine coolant temperature is too high
Reduce power.
SS T-Lube Oil
Safety system has determined that the
lube oil temperature is too high
Reduce power.
Stop Activated (EMU) EMU has triggered automatic stop
command due to limit value violation
1. Determine cause for shutoff and
rectify
2. Observe further alarms / indica‐
tions on display.
78 | Troubleshooting | MS15021/01E 2012-02
TIM-ID: 0000008900 - 002
