Review and Replace Controller Memory battery

The Hirsch Controller memory battery is used to preserve the controller programming while the controller is powered off. If the memory battery has failed or is degraded, it can lead to loss of programming while the controller is powered off. You would need to download the configuration and credentials to resend the controller programming.

See the following guide to review the controller memory battery status.

Performing Periodic Maintenance for an Mx Controller | Gathering Diagnostic Information

See the following guide to replacing Mx-2/4/8 memory battery.

Performing Periodic Maintenance for an Mx Controller | Replacing the Mx Controller’s Memory Battery

See the following guide to replace Mx-1 memory battery.

Performing Periodic Maintenance for an Mx-1 or Mx-1-ME Controller | Replacing the Mx 1 or Mx 1 ME Controller’s Memory Battery