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The receiver display is blank.
• Check the 24 Vac power connections. The red power wires from the receiver must be connected
to the controller’s 24 Vac power source. Make sure the power wires are not connected to the
station or pump/master valve terminals. These terminals only provide 24 Vac power when the
controller is operating the sprinkler zones.
The sensor module does not activate the receiver at close range.
• The receiver module may not recognize the sensor module address code. See “Set or Restore
Sensor Address Code” on page 20.
• Remove and replace the sensor module batteries.
The sensor system works, but the controller does not respond to the sensor.
• Check the Yellow or Brown wire connection. The Brown wire must be used for Normally
Closed (NC) controller operation and Yellow wire for Normally Open (NO) operation.
• The Brown wire must be used when splicing into the valve common wire.
• Make sure the controller’s “Sensor Bypass” switch is not in the Bypass or Active position.
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RainSensorAlpha7 3/10/2005 3:31 PM Page 23