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Fault
The engine runs, but the controller
shows genset to be OFF.
The controller shows incorrect PF
value or kW or load current.
The controller shows incorrect
mains voltage or incorrect main
alternator voltage.
The controller shows incorrect
reading for any of LOP, fuel level or
engine temperature sensors.
AUTO mode troubleshooting
Fault
The controller shows incorrect engine
RPM.
The controller does not start the engine
when a remote start command is sent
from an external device.
Controller does not stop the engine
when a remote stop command is sent
from an external device.
While in auto mode, the controller
sends a start command even if mains is
present.
Modbus troubleshooting
Fault
The controller is not sending data using
Modbus
User manual 4189341360A EN
Action
• Check start-relay connection to the terminal on the controller.
• Go to the configuration menu on the controller. Make sure the start mode and
start relay output polarity are configured correctly.
• Check the alternator voltage signal (L1 phase) is received by the controller
terminal.
• Check if the LOP and LLOP are working correctly. Check the wiring to the
controller.
• Check the wiring of the failing alternator phase voltage and the CT to the
controller.
• Check the CT ratio (if kW or current reading is faulty).
• Check the wiring of the failing phase to the controller.
• Check respective sensor and its wiring.
• Check the SCP wiring.
• Go to the Configuration menu on the controller. Make sure the failing sensor is
calibrated and configured correctly.
Action
• Check the wiring of the main alternator's L1-phase and neutral to the
controller.
• Check the wiring of the remote start signal to the digital inputs on the
controller.
• Go to the Configuration menu on the controller. Make sure the digital input for
the remote start is configured correctly.
• Make sure that the controller is in Auto mode.
• Make sure that Mains monitoring is not enabled.
• Make sure Site mode is not enabled.
• Check the wiring of the remote stop signal to the digital input on the
controller.
• Go to the Configuration menu on the controller. Make sure the digital input for
the remote stop is configured correctly.
• Make sure that the controller is in Auto mode.
• Check the wiring of the mains L1, L2 and L3 phase to the inputs on the
controller.
• Go to the Configuration menu on the controller. Make sure the mains
monitoring parameters are configured correctly.
Action
• Make sure Modbus communication is enabled in the controller.
• Make sure the Modbus communication settings of the serve match with the
client.
• Make sure the Modbus connections are wired correctly (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).
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