ElkM1 system - low battery

[George M]

I have an Elk M1 system. Been in operation since 2008. Recently I keep getting a "low battery" warning. I replace the backup battery, and the only other battery item in the system is a door lock. Replaced those batteries also. Still get the warning. What else would cause the warning? Is there a way to get info on what exactly is causing the error?

 

[RAL]

The low battery warning will continue until the next time the M1 runs a battery load test, usually once every 24 hours. Leave the new battery installed and wait 24 hours to see if the warning goes away,

You can also force a load test through keypad menu 8, System Settings, submenu 4, System Tests. This should also clear the low battery warning.

 

[George M]

Thank you Ral,
The error of the low battery has gone away. However I still have an error of "serial expander trouble".
I have the serial expander with the firmware for the zwave controller. Since I started to move some of the zwave switches to a different controller (home assistant) I am now getting that error on the keypads.
I have gone in and cleaned up the lists of lights no longer controlled by the ELK, but the error still reports on the keypads.
Can I clear the error message for the serial expander the same as the low battery?
The log did show the problem with the the serial expander, but since i cleaned up the lights it now does not show it, only the keypads.
Its been about 15 years since I did programing on the Elk and cant find my notes or the manual anymore.

Thanks again