Troubleshooting Random Troubles and Restorations on 6820EVS Fire Alarm Panels

Random Troubles 6820EVS: Are you experiencing intermittent troubles and quick restorations on your recently upgraded 6820EVS fire alarm panel? This can be a frustrating issue, especially when it affects the reliability of your fire protection system. Here, we’ll delve into the potential causes and troubleshooting steps to get your system functioning smoothly again.

Common Symptoms:

• Random troubles occurring on devices connected to the module side of the 6820EVS panel’s SLC loop.
• These troubles resolve quickly (within seconds) but recur at seemingly random intervals.
• The issue might affect devices connected to the 6815 expander as well.

Potential Causes:

• Unstable SLC Voltage: Fluctuations in the SLC voltage, even brief dips below the recommended level, can disrupt communication between the panel and devices, leading to troubles and restorals.
• Grounding Issues: Improper grounding can introduce electrical noise and signal integrity problems, causing communication errors.
• Module Programming Inconsistencies: When migrating from a 5820xl panel, ensure all device addresses and settings are correctly transferred to the 6820EVS.
• Less Likely: In rare cases, a faulty 6820EVS panel or expander might be the culprit.

Troubleshooting Steps:

1. Address SLC Voltage:
   • Verify secure and corrosion-free SLC wiring connections.
   • Ensure adequate power supply capacity for all devices on the loop.
   • Consider adding a voltage regulator if voltage fluctuations persist.
2. Check Grounding:
   • Inspect and tighten all grounding connections, ensuring proper connection to earth ground.
   • Eliminate any potential ground loops within the system.
3. Review Module Programming:
   • Meticulously review the transfer of device addresses and settings from the 5820xl to the 6820EVS.
   • Refer to the 6820EVS manual for specific programming requirements for migrated devices.
4. Isolate the Issue:
   • Try disconnecting the 6815 expander from the SBUS. If troubles cease, investigate potential grounding or communication problems on the expander.
5. Consider Firmware Updates:
   • Check with the manufacturer for any available firmware updates for the 6820EVS panel and expander. Updates might address compatibility issues or known bugs.

By following these steps, you can effectively troubleshoot random troubles and restorations on your 6820EVS fire alarm panel and restore optimal system performance.