INST ON L1trouble
Notifier NFS2-640: INST ON L1
Notifier NFS2-640·1 view·0 field notes
What This Code Means
No devices are installed on the system.
Common Causes
- 1No devices are connected to Loop 1
- 2No devices have been programmed on Loop 1
- 3SLC loop wiring issue preventing communication with all devices
Resolution Steps
Verify that devices are properly connected to Loop 1 and that the panel has been programmed to recognize them. Check SLC wiring and device addressing.