If a mainline break has occurred, flow has exceeded the mainline break threshold and the controller will close the station valves.

Possible Causes:

• Mainline break: An actual break in the mainline has occurred 
• Stuck valve: A station valve is stuck on 
• Programming error: The mainline break threshold is set too low 

Possible Fixes:

• Locate and fix the break
• Locate and replace the broken fitting
• Change the mainline break threshold. For information about how to do this, read: Setting Mainline Break Threshold and Delay

To clear a Mainline Break from the controller: 

1.  Turn the Upper Knob to view flow status.

2.  Press the * button to clear all flow alerts.

To clear a Mainline Break from WeatherTRAK Central:

1.  Hover over the Alerts tab and click on Alert List. A list of all active alerts will display.

2.  Place a checkmark next to the alert you would like to clear.

3.  Press the Clear Flow and Electrical Alerts button. A pop-up screen displays asking you to verify the change. Click Yes.