⚠️ Status: Obsolete
The EST FireShield Plus is a legacy conventional panel. Finding replacement main boards is increasingly difficult. A full system upgrade is highly recommended.
Common EST FireShield Plus Trouble Codes
- Zone Trouble: The conventional initiating device circuit (IDC) has an open wire or a missing end-of-line (EOL) resistor.
- Ground Fault: A field wire on a zone or notification circuit is touching the metal conduit or panel enclosure.
- NAC Trouble: A Notification Appliance Circuit (horn/strobe loop) has an open or short circuit preventing proper operation.
- Battery Trouble: The standby backup batteries have dropped below the required 24VDC operating voltage or failed their automatic load test.
The EST FireShield Plus is a discontinued conventional panel, meaning finding replacement parts for a failing system can be difficult and expensive. If your building is plagued by persistent zone troubles or ground faults, our technicians can evaluate your wiring and provide a fast, compliant panel upgrade quote for your Austin facility.