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Possible Fixes:To clear a No Connect (NC)To learn more about no connect alerts, watch the following video:Valve alerts are viewed in the Alerts menu. If you have an alert, you will see a two-letter abbreviation (NC, SH, OC) . A double dash (--) means that there is not an alert for the station you are viewing.
A No Connect alert can happen when the current draw for the valve solenoid is below 75 milliamps. When the threshold is not met, an alert will occur. Some of the possible causes:
- The number of Max Active Stations exceeds the number of stations physically connected to the controller
- A ribbon cable between station PCB’s is partially disconnected or station keys are missing
- No field wire is connected to a specific station output
- The field wire terminated in the station output is not making proper contact
- The field wire is broken or there is a corroded or failed splice
When a No Connect occurs, the controller cannot operate this valve and will raise a No Connect Alert on the valve. If the valve is a Normally Closed Master Valve, no irrigation will occur.
Possible Fixes:
1. Reduce the number of Max Active stations in the SETUP menu.
2. Re-insert or repair the ribbon cable and verify sufficient station keys.
3. Conduct an Ohms test on a field wire while the solenoid remains disconnected. If Ohms value is higher than 10 Ohms, a field wire or bad splice exists. If Ohms reading on solenoid is greater than 100, replace the solenoid.
To clear a No Connect (NC)
From the controller:
1. Turn the Main Knob to the ALERTS menu.
2. Turn the Upper Knob to view valve status.
3. Press the * button to clear all valve alerts.
From WeatherTRAK.net:
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.