068 – SS T-Coolant
ZKP-Number:
Red alarm. Engine shutdown.
Associated parameter 2.0120.932
Cause
Corrective action
Coolant temperature after engine
too high (limit value 2). Engine
coolant pump failure, volumetric
flow too low, air in engine
coolant circuit.
u
Check engine coolant circuit.
089 – SS Engine Speed too Low
ZKP-Number:
Red alarm. Engine shutdown.
Associated parameter 2.2500.030
Cause
Corrective action
Engine is stalled. Engine speed
in normal operation has fallen
below the limit value of
parameter 2.2500.027 (speed
limit for stalling) without an active
stop command. The engine is
shutdown for safety reasons.
1. In parallel operation connected to mains:
• Check mains for frequency drop.
• Check generator and coupling for damage.
2. In isolated operation:
• Check throttle position.
• Check throttles for implausible closing. If throttles are fully
open: Check if load step values are admissible.
• Check bypass position.
• Check air filter for contamination, replace if contamination is
visible (→ Page 153),
• Check exhaust back pressure.
• Check differential pressure over mixture cooler.
• Check emissions and injection timing (→ Page 137).
• Check oil separator efficiency (oil in compressor intake
elbow), clean compressor if necessary.
• Check valve clearance (→ Page 145).
• Check gasket between mixture line and cylinder head for
correct installation position.
090 – SS Idle Speed Not Reached
ZKP-Number:
Red alarm. Start terminated.
Associated parameter 2.1090.925
Cause
Corrective action
Idling speed not attained.
1. Check ignition.
2. Check gas supply.
3. Check mixture setting.
108 | Troubleshooting | MS150059/01E 2012-07
TIM-ID: 0000017544 - 001
