Fire-Lite MS-9200UDLS

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What This Code Means

A ground fault indicates that a portion of the system's circuitry has an unintended connection to the earth ground, which can compromise the panel's immunity to transients.

Common Causes

1Incoming earth ground wire not properly connected to the grounding stud
2Ground cable not wired to the bottom position of TB11
3AC mains ground cable not installed closest to the backbox
4Improperly secured keps nuts on the grounding stud

Resolution Steps

Disconnect all sources of power before servicing. Connect the incoming earth ground wire to supplied cable #71073 with a wire nut. Position the ring terminal end over the grounding stud and secure with a keps nut. Place the ring terminal from the second supplied ground cable over the stud and secure with the second keps nut. Wire the ground cable to the bottom position of TB11. Ensure the AC mains ground is the first cable installed, closest to the backbox.

Manual References(2)

1fire-liteMS-9200UDLSInstallation2015p. 32, 194, 198, 3, 47 +1Open

2fire-liteMS-9200UDLSInstallation2005p. 110, 131, 108, 26, 182 +10Open

Field Notes

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Related Codes

NAC 3 FAULTA fault condition (open or short) has been detected on Notification Appliance Circuit 3.COMM FAULT 1The communicator failed to successfully transmit a report to the central station using line 1.TELCO LINE 1The panel has detected a loss of voltage or failure on telephone line 1.COMM FAULT 1 / COMM FAULT 2Indicates a communication failure between the panel's internal Digital Alarm Communicator/Transmitter (DACT) and the central station.NAC 4 FAULTA fault condition (open or short) has been detected on Notification Appliance Circuit 4.