Battery voltage lowtrouble

Silent Knight 5820XL: Battery voltage low

Silent Knight 5820XL·1 view·0 field notes

What This Code Means

The system has detected that the battery voltage is below the required threshold for reliable operation, typically less than 85% of its rating.

Common Causes

1Battery terminal voltage less than 85% of rating
2Battery too small for the installation
3Batteries older than five years
4Batteries wired in parallel instead of series

Resolution Steps

Measure battery voltage while the Notification Appliances are sounding. Replace any battery with terminal voltage less than 85% of rating. Reapply AC power and RESET system.

Manual References(5)

1silent knight5820XLInstallation2007Open

2silent knight5820XLDatasheet2006Open

3silent knight5820XLDatasheet2006Open

Field Notes

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Related Codes

Printer offlineThe system printer is not communicating with the control panel.SLC Class A supervision lostThe panel has lost the return path for a Class A SLC loop configuration.BATTERY LOWThe system has detected that the standby battery voltage is below the acceptable threshold, indicating the batteries are depleted or failing to hold a charge.Point disabledA specific point or circuit has been manually taken out of service, preventing it from initiating an alarm or activating an output.GROUND FAULTAn earth ground fault occurs when the panel senses an unexpected flow of current from one or more of its terminals to the earth connection (Terminal 2).