UV lamps must be replaced once the lamp life timer reaches 0 days or when a lamp has failed. When a lamp change is performed, the lamp life timer must be reset on the controller for the system to operate normally. Follow the steps below based on the controller type to reset the timer. 

1. After the lamps have been changed, plug the control panel back into the outlet.
2. Wait for the 180 second countdown to complete.
3. Press and hold down the button directly beneath the top LED screen for 15 seconds.  
4. Release the button.
5. Unplug the system and plug the system back in.

Once the above steps have been completed, the lamp timer should be reset to 12000 hours.