CHECK or TRBL 971

trouble

Honeywell VISTA-128FBP

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What This Code Means

Trouble detected on Bell 2 Output (Notification Appliance Circuit).

Common Causes

1Open circuit on NAC 2
2Short circuit on NAC 2
3Missing EOL resistor

Resolution Steps

Inspect Bell 2 output wiring and notification appliances for shorts or opens. Verify EOL resistor is present.

Manual References(1)

1honeywellVISTA-128FBPT and VISTA-250FBPTUser Guide2012p. 60, 68, 3, 65, 58 +3Open

Field Notes

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Related Codes

CHECK or TRBL 974Trouble detected on Dialer 1.972 Earth Ground FaultA system trouble indicating that an earth ground fault has been detected. This condition may eliminate some of the system's protection.CHECK or TRBL 997Polling Loop Short circuit detected.ALARMIndicates that a burglary or non-fire protection zone has been faulted while the system is armed, or a 24-hour zone has been triggered.LO BAT accompanied by zone descriptorA low battery condition exists in the displayed wireless transmitter.

Related Questions

I'm getting CHECK or TRBL 974 on my Honeywell VISTA-128FBP. What should I check?I'm getting 972 Earth Ground Fault on my Honeywell VISTA-128FBP. What should I check?What zone types are supported on the VISTA-128FBP and how are fire detector zones wired differently from supervisory zones?

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