To troubleshoot a 4009 NAC Power Failure on a 4010ES system, you must investigate the power status at the remote 4009 cabinet. This trouble typically indicates a loss of primary AC power or a secondary battery/charger fault at the extender.
Quick Check: Verify the green AC power LED is lit on the 4009 main board and check the 3A signal circuit fuses (Page 41) [3].
Steps to Troubleshoot:
Check AC Power: Ensure 120VAC is present at the AC wiring block. Verify the transformer is securely connected to the power supply board (Page 5) [2].
Inspect Fuses: Check the 3A fuses (F1/F2) on the 4009 board. Blown fuses will cause a power failure trouble (Page 41) [3].
Test Batteries: Ensure batteries are connected with the correct polarity using harness 733-945. Measure the battery voltage; the charger provides a maximum of 1.4A (Page 5) [2].
Verify IDNet Communication: If the 4009 is addressable, ensure SW4-5 on the 4009 main board is set to ON for IDNet control (Page 14) [2].
Check Earth Faults: The 4009 reports a common Ground Fault trouble to the FACP. Inspect field wiring for nicks or moisture if an earth fault is present (Page 80) [1].
Monitor Point Wiring: If using a hardwired control interface, ensure the EOLR (10K, 1/2W) is properly installed to supervise the connection to the host panel (Page 20) [2].
Verify with current documentation before making changes.
