Fault Action
• Enter the Configuration mode in the controller and verify the configuration for Start
mode and the Start relay output polarity.
The engine runs, but the controller
shows genset to be OFF.
• Check the alternator voltage signal (L1 phase) is received by the controller terminal.
• Check if the LOP and LLOP are working OK. Check the wiring to the controller.
The controller shows incorrect PF
value or kW or load current.
• Check wiring of the respective alternator phase voltage and the CT to the controller.
• Check the CT ratio (if kW or current reading is faulty).
The controller shows incorrect mains
voltage or incorrect main alternator
voltage.
• Check the wiring of the respective phase to the controller.
The controller shows incorrect reading
for any of LOP, fuel level or engine
temperature sensors.
• Check respective sensor and its wiring.
• Check the SCP wiring.
• Enter the Configuration mode in the controller and verify the calibration for the
respective sensor in the configuration.
Table 15.2
Auto mode troubleshooting
Fault Action
The controller shows incorrect engine
RPM.
• Check the wiring of the main alternator’s L1-phase and neutral to the controller.
The controller does not start the engine
when a Remote start command is sent
from an external device.
• Check the wiring of the Remote start signal to the controller's respective digital
input terminal.
• Enter the Configuration mode in the controller and verify the configuration for the
Remote start digital input terminal.
• Check that the controller is in Auto mode.
• Check for Mains monitoring disabled and Site mode disabled.
Controller does not stop the engine when
a Remote stop command is sent from an
external device.
• Check the wiring of the Remote stop signal to the controller's respective digital
input terminal.
• Enter the Configuration mode in the controller and verify the configuration for the
Remote stop digital input terminal.
• Check that the controller is in Auto mode.
While in Auto mode, the controller sends a
Start command even if the Mains is
present.
• Check the wiring of the mains L1, L2 and L3 phase to the controller's respective
input terminal.
• Enter the Configuration mode in the controller and verify the configuration for the
Mains monitoring.
Table 15.3 Modbus troubleshooting
Fault Action
The controller is not sending data via the
Modbus communication
• Check if the Modbus communication is enabled in the controller.
• Check if the Modbus communication settings of slave match with the master.
• Check if the connections are done properly for the Modbus input (terminals 31 and
32).
• Check if the connections are interchanged.
• Check the 120 Ω resistance between terminal A (terminal 31) and terminal B
(terminal 32).
USER MANUAL 4189341227A UK Page 85 of 86
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