⚠️ Status: Obsolete
The Fire-Lite MS-5UD is a legacy addressable fire alarm panel. Replacement main boards are no longer manufactured. A full system upgrade is highly recommended.
Common Fire-Lite MS-5UD Trouble Codes
- ZONE TROUBLE: A conventional initiating zone has an open circuit or is missing an end of line resistor which prevents the panel from monitoring the loop.
- TELCO FAULT: The onboard digital alarm communicator transmitter has lost connection to the primary or secondary analog telephone lines.
- NAC FAULT: The notification appliance circuit has a break or short preventing the panel from supervising the horns and strobes.
- SYSTEM GROUND: A bare field wire on a zone or notification circuit has made physical contact with a grounded metal backbox or conduit.
Is your legacy Fire-Lite MS-5UD panel beeping with a telecom fault or zone trouble in your Austin commercial property? Our licensed technicians can troubleshoot these conventional wiring issues or provide a clear path to upgrade your obsolete hardware to ensure full code compliance.