MTU 20 V 4000 G23 Technical Publication page 92

Troubleshooting
Fault
code No. Designation
382 AL Wiring TOP 2
383 AL Wiring TOP 3
384 AL Wiring TOP 4
390
AL MCR exceeded
392 HI T-Coolant Redundant Alarm configuration limit
393
SS T-Coolant
Redundant
394 LO P-Lube Oil
Redundant
395 SS P-Lube Oil
Redundant
396 AL T-Coolant Max
Deviation
397
AL P-Oil Max Deviation
400 AL Open Load Digital
Input 1
M015715/00E 06-08
Meaning
Alarm configuration; Short
circuit or wire break on
transistor output, plant-side 2
(TOP 2).
Alarm configuration; Short
circuit or wire break on
transistor output, plant-side 3
(TOP 3).
Alarm configuration; Short
circuit or wire break on
transistor output, plant-side 4
(TOP 4).
Alarm configuration;
DBR/MCR function: MCR
has been exceeded.
value 1; Preliminary
warning: Redundant coolant
temperature reading too high.
Alarm configuration limit value
1; Main warning: Redundant
coolant temperature reading
too high; Engine stop.
Alarm configuration limit
value 1; Preliminary warning:
Redundant lube oil pressure
reading too low.
Alarm configuration limit value
2; Main warning: Redundant
lube oil pressure reading too
low.
Alarm configuration; Maximum
coolant temperature deviation.
Alarm configuration; Maximum
lube oil pressure deviation.
Alarm configuration; Line
disruption on digital input 1;
Cabling faulty or no resistance
over switch.
Task
Check cabling to
plant.
Check cabling to
plant.
Check cabling to
plant.
1. If alarm is only
temporary, no
action required;
2. if alarm is
continuously
active, contact
Service.
1. Check cabling
2. Contact
Service.
1. Check cabling
and sensor.
2. Contact
Service.
1. Check cabling
and sensor.
2. Contact
Service.
1. Check cabling
and sensor.
2. Contact
Service.
1. Check cabling
and sensor.
2. Contact
Service.
1. Check cabling
and sensor.
2. Contact
Service.
1. Check cabling
2. Check input of
target device.
3. Contact
Service.
87
Related
parameter No.
2.8006.639
2.8006.640
2.8006.641
1.1085.009
2.0129.931
2.0129.932
2.0112.921
2.0112.922
1.8004.626
1.8004.625
2.8006.625
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