Applies to:

Troubleshooting a Low Battery or Battery Failure

Overview

After a power loss or reset by power switch, if the battery is low or bad the following could occur:

Displaying incorrect date
Displaying incorrect time
Displaying incorrect time zone
Loss of timers
Incorrect timers

Field Troubleshooting

To avoid electrical shock or property damage, disconnect power before installing or servicing equipment. A qualified technician must perform the service procedures.

Disconnect unit from power supply.
Remove top cap from unit.
Access Display with faulty battery and replace, making sure the positive (+) side is facing outward.