068 – SS T-Coolant
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
Red alarm. Engine shutdown.
Associated parameter 2.2500.030
Cause
Corrective action
Engine stalls. In normal
operation the engine speed is
below the limit set in parameter
2.2500.027 (Engine stall speed
limit) without an engine stop
having taken place. 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 148).
• 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 139).
• Check gasket between mixture line and cylinder head for
correct installation position.
090 – SS Idle Speed Not Reached
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.
091 – SS Release Speed Not Reached
Red alarm. Start terminated.
Associated parameter 2.1090.924
Cause
Corrective action
The speed (starter DISENGAGE)
was not attained, ignition not
working or no gas available.
1. Check ignition.
2. Check gas supply.
3. Check mixture setting.
94 | Troubleshooting | MS150097/01E 2013-10
TIM-ID: 0000027858 - 001
