Troubleshooting

There are some checks you can perform to try to identify potential issues with the device’s operation.

The following table describes potential problems, their possible causes, checks you can perform and possible solutions for each. After referring to this table, if you cannot resolve the problem, contact your local Schneider Electric sales representative for assistance.

Potential problem	Possible cause	Possible solution
The device displays nothing when switched on.	No power supply to the device.	Check that the auxiliary power supply is present.
The device displays nothing when switched on.	The auxiliary power supply is not compliant.	Check the auxiliary voltage: U = 110...480 Vac
The device notified an insulation fault, but your system shows no signs of abnormal behavior.	The insulation alarm threshold is not appropriate.	Check the value of the insulation alarm threshold. Modify the insulation alarm threshold as appropriate.
	The preventive alarm threshold for faults is not appropriate.	Check the value of the preventive insulation alarm threshold. Modify the preventive insulation alarm threshold as appropriate.
You deliberately created an insulation fault, but the device failed to detect it.	The resistance value used to simulate the fault is greater than the value of the insulation alarm threshold.	Use a resistance value that is lower than the insulation alarm threshold or modify the insulation alarm threshold.
	The fault is not detected between neutral and ground.	Start again ensuring you are between neutral and ground.
The product status LED is red and the display shows DISCONNECTED INJECTION DETECTED.	No electrical installation has been connected to the electrical panel when commissioning.	Check the connection on the injection terminal block (terminals 1 and 3) and restart the auto-test. Disable the function during commissioning.
	The injection wire or the ground wire for the device is cut.
	The device considers an electrical power system with low capacitance and high resistance to be a disconnected injection.
The product status LED is red and the display indicates that an error occurred during the auto-test.	The device's injection circuit is cut off.	Briefly disconnect the auxiliary power supply to the device.
Although the device is being supplied with power, the product status LED does not light up.	Faulty indicator light.	Restart the auto-test and check that the product status LED lights up briefly.
The alarm LED does not light up in the event of a fault.	Faulty indicator light.	Restart the auto-test and check that the alarm LED lights up briefly.
Nuisance alarms	Highly disturbed ungrounded power systems with potential power quality issues	Check the value of the filtering. Modify the filtering as appropriate.
Slow device response time	The filtering is not appropriate.	Check the value of the filtering. Modify the filtering as appropriate.