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CHECK or TRBL 970trouble

Honeywell VISTA-128FBP: CHECK or TRBL 970

Honeywell VISTA-128FBP·1 view·0 field notes

What This Code Means

Trouble detected on Bell 1 Output (Notification Appliance Circuit).

Common Causes

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

Resolution Steps

Inspect Bell 1 output wiring and notification appliances for shorts or opens. Verify EOL resistor is present.

Manual References(1)

Field Notes

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Related Codes

CHECK or TRBLIndicates a trouble condition in the system, meaning a problem exists with specific zones, relays, peripheral devices, or system components that may eliminate some protection.FIRE or ALARM accompanied by zone descriptorIndicates that an alarm occurred while the system was armed.CHECK or TRBL 6XXIndicates a trouble condition on a supervised relay where XX is the relay number (01-32).FIRE DRILL ACTIVEThe system is currently in Fire Drill test mode.HSENS accompanied by zone numberA smoke detector has a high sensitivity level, which may cause false alarms.

Related Questions

How are the VISTA-128FBP bell output circuits wired and what supervision method does the system use to detect an open or short?How does the VISTA-128FBP supervise its backup battery and what does a battery trouble condition indicate?What does a ground fault trouble indicate on the VISTA-128FBP and how do I locate it?
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