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Troubleshooting
1. Alarm list check
Where there are problems in the system operation, you need to review the alarm list menu of the control-
ler and then check the engine and the system in reference to the alarm codes.
(1) When problems described in alarm codes E03, E04, E07 or E08 occur, the engine is not available for
safe operation and therefore the engine will stop as the controller will turn off the actuator for safety.
(2) When problems described in alarm codes E03, E04, E07 or E08 occur, the engine will not be able to
restart as long as the alarm is not released.
(3) When alarms occur, you can release them by turning off the power of the controller.
Alarm
Code
Alarm
Item
Alarm Condition Output Control Measures
E01
Battery
Low
When the battery voltage
continues to be lower than
Low Battery voltage val-
ues for more than
5 seconds
LCD alarm message Check the battery line
Error LED lamp Replace the battery
E02
Battery
High
When the battery main-
tains its voltage exceeding
30V DC for more than 5
seconds
Alarm message pop-up
on LCD
Check the battery line
Error LED on Replace the battery
E03
Pick-up
Error
Problems in sensor sig-
nals when the engine
starts.(Engine RPM lower
than 600)
Alarm message pop-up
on LCD
Check the RPM sensor and
connecting circuits
Error LED on Replace the RPM sensor
Actuator control signal off
E04
Pick-up
Error
Problems in sensor sig-
nals during the engine
operation (Engine RPM
600 or higher)
Alarm message pop-up
on LCD
Check the RPM sensor and
connecting circuits
Error LED on Replace the RPM sensor
Actuator control signal off
E05
Actuator
Current
Open
Disconnection in the actu-
ator or the connecting cir-
cuits
Alarm message pop-up
on LCD
Check the disconnection in
the actuator and connect-
ing circuits
Error LED on Replace the actuator
E06
Actuator
Current
short
Short-circuits in the actua-
tor or the connecting cir-
cuits
Alarm message pop-up
on LCD
Check the disconnection in
the actuator and
connecting circuits
Error LED on Replace the actuator
E07
Over
Speed
Engine RPM exceeding
the configured over speed
values
Alarm message pop-up
on LCD
Check the speed setting
Error LED on Adjust PID setting values
Actuator control off
E08
FET Drive
Error
Damages to components
in the actuator output sec-
tion inside the controller
Alarm message pop-up
on LCD
Check the actuator and
connecting circuits
Error LED on Replace the controller
Actuator output power
cutoff
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