When a Station Decoder not Found alert occurs it means that the controller is not communicating with the station decoder on the 2-wire path. When the Station Decoder Not Found alert occurs, the controller will not able to communicate with the station decoder to open or close the irrigation valve. This alert will affect scheduled irrigation, manual irrigation, and learn flow. The controller will not be able to close the irrigation valve based on exceeding alert thresholds related to flow. The controller will not be able to perform diagnostic tests for that decoder.

Possible Causes

• The station decoder is not programmed
  
  
• The station decoder is not correctly installed on the 2-wire path
  
  
• The station decoder is not functioning

Possible Remedies 

• Check any onsite documentation or as-builts to verify the station decoder was programmed. If that information is not available, you can view station decoder programming using the following steps:
  
  1.  Go to Configure H20 2-wire on the controller menu.
  
  2.  Press + or - to view different decoder types.
  
  3.  Press Select when you reach the station number you believe is programmed to the decoder.
  
  4.  Validate the decoder information associated with that station matches the station decoder information in the field.
  
  5.  If the information matches, you have confirmed the decoder was programmed and can move on to additional troubleshooting efforts.

• Check to validate the station decoder is properly wired to the 2-wire path and that the proper DBR/Y-6 type connectors were used for all wire connections.
  
  
• Check the station decoder LEDs to validate the decoder is or is not getting power. The LED on the 2-wire side of the decoder (by the red and black wires) will blink every 15 seconds if it is getting at least 14VAC from the 2-wire path.
  
  If a group of station decoders on the 2-wire path are all reporting this alert, there is a high probability of a break in the 2-wire path.

How to Clear 

The Station Decoder Not Found alert will automatically clear when a valve test or station activation completes without detecting an error. The station can also be configured to OFF which will clear the alert. You can also use the Clear All Electrical Alerts button from WeatherTRAK Central.