Low Controller Battery
The Low Controller Battery trouble condition indicates that the onboard door controller battery is not providing power or is low. When this trouble condition is present, programming changes including user credentials and access permissions will not be saved at the controller and will be removed in the event of a controller power cycle or hard reset.
Important: If you make any of the corrections listed below, a power cycle of the controller must be performed. Using the reset button, the hard reset command or other commands will not clear the trouble condition and restore normal operation.
How to resolve:
Mercury series hardware (revision D or later)
- Verify the J19 jumper is in the ON position and the tab of MAC address stickers is removed.
- If the jumper was in the OFF position and/or the tab of stickers was left on, move the jumper to the ON position and remove the tab of stickers. Once complete, power cycle the controller.
Note: Since customer-defined programming is not expected to have been saved in the controller, installers will be required to send the Resend Access Cards, Resend Card Formats, Resend Schedules, and Resend Rules commands after the jumper and tab corrections have been made. For more information about sending these commands, see What troubleshooting commands are available for Access Control?.
- If the jumper was in the OFF position and/or the tab of stickers was left on, move the jumper to the ON position and remove the tab of stickers. Once complete, power cycle the controller.
- Replace the onboard door controller battery if it is no longer providing voltage.
Note: If the jumper is left ON, the tab MAC address stickers are left in place, or the on-board battery is dead, the Low Controller Battery trouble condition will remain active and the 1 LED on the controller will flash rapidly.
Mercury series hardware (revisions A, B, C)
- Verify the plastic film and the tab of MAC address stickers that prevent contact between the battery and metal conductor clip have been removed.
- If this plastic film and/or tab of stickers were left on, remove them and power cycle the controller.
Note: Since customer-defined programming is not expected to have been saved in the controller, installers will be required to send the Resend Access Cards, Resend Card Formats, Resend Schedules, and Resend Rules commands after the jumper and tab corrections have been made. For more information about sending these commands, see What troubleshooting commands are available for Access Control?.
- If this plastic film and/or tab of stickers were left on, remove them and power cycle the controller.
- Replace the onboard door controller battery if it is no longer providing voltage.
Note: If the plastic film or the tab of MAC address stickers are left in place or the on-board battery is dead, the Low Controller Battery trouble condition will remain active and the 1 LED on the controller will flash rapidly.
HID series hardware
- Verify the J4 jumper is in the ON position.
- If this jumper was in the OFF position, move it to the ON position and power cycle the controller.
Note: Since customer-defined programming is not expected to have been saved in the controller, installers may be required to send the Resend Access Cards, Resend Card Formats, Resend Schedules, and Resend Rules commands if the battery jumper is not set to ON during programming. For more information about sending these commands, see What troubleshooting commands are available for Access Control?.
- If this jumper was in the OFF position, move it to the ON position and power cycle the controller.
- Replace the onboard door controller battery if it is no longer providing voltage.
Note: If the jumper is left OFF or the on-board battery is dead, the Low Controller Battery trouble condition will remain active.
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