To troubleshoot a ground fault on the 4010ES, use the built-in Earth Fault Search diagnostic to isolate the fault to a specific circuit or IDNet segment (Page 78) [1].
Note that the panel cannot provide fire protection while this search is running (Page 80) [1].
Log in to the panel at Access Level 1 or higher (Page 82) [1].
Press Menu, scroll to Diagnostic Functions, and press Enter (Page 82) [1].
Select Earth Fault Search and choose either Location Search (for transponders/slaves) or IDNet Channel Search (for addressable loops) (Page 80, 82) [1].
If the search does not isolate the fault, manually troubleshoot by disabling NACs one at a time or disconnecting AUX power and N2 communications to see if the fault clears (Page 18) [1].
Before testing, use a multimeter to ensure circuits are free of extraneous voltage; readings must be less than 1.0V AC/DC (Page 77) [1].
The system detects faults at a minimum threshold of 10 KOhms (Page 78) [1].
Ensure the Detect Earth Fault jumper (P3) is installed at the MSS for detection to function (Page 80) [1].
