⚠️ Status: Obsolete
The Silent Knight 5104B is a legacy communicator. A full system upgrade to a modern cellular or IP communicator is highly recommended.
Common Silent Knight 5104B Trouble Codes
- ZONE TROUBLE: A specific hardwired initiating device circuit has an open wire or missing end of line resistor.
- TELCO FAULT: The onboard digital alarm communicator failed to detect proper voltage from the primary or secondary telephone lines.
- COMM FAULT: The panel attempted to send a signal to the central monitoring station over the phone lines but failed to receive a confirmation kiss off.
- SYS BATT: The standby backup batteries have dropped below the required operating voltage or failed their automatic load test.
The Silent Knight 5104B is a discontinued fire communicator, making replacement parts incredibly difficult to source when traditional phone lines inevitably degrade or fail. If your building is plagued by persistent communication faults, our technicians can evaluate your wiring and provide a fast and compliant cellular upgrade quote for your Austin facility.