Deif SGC 120 - AUTO Mode Troubleshooting

Fault Action
The engine runs, but the controller
shows genset to be OFF.
• Check if the MPU signal (if used), and main alternator voltage signal 
phase) are received by the controller terminals.
• 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 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 phase to the controller.
• If the problem is not resolved, replace the controller and try again.
The controller shows incorrect reading
for any of LOP, fuel level or temperature
sensors.
• Check the respective sensor and its wiring.
• Go to the Configuration menu on the controller. Make sure the sensors are
calibrated correctly.
AUTO mode troubleshooting
Fault
Action
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.
• Go to the Configuration menu on the controller. Make sure the digital input for
the remote start is configured correctly.
• Check that the controller is in Auto mode.
• Make sure that the mains monitoring and site monitoring are not enabled.
Controller does not stop engine even
when a remote stop command is sent
from an external device.
• Check the wiring of the remote stop signal to the controller's digital input
terminal.
• Go to the Configuration menu. Make sure the digital input for the remote stop
is configured correctly.
• 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 input
terminal.
• Go to the Configuration menu on the controller. Make sure the mains
monitoring is configured correctly.
User manual 4189341340A EN Page 76 of 76