How can I make sure that the rain sensor on my SLW series weather station really works?

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    Gpitt70

    "To test a rain sensor, put the SmartLine in the Standard watering mode and then change the time in the controller to a few minutes before your next start time."  *WHAT IF YOUR NEXT START TIME IS 12 MIDNIGHT?

    *

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    Darren Harris

    Not your usual program start time, but a start time a few minutes in the future. You can also press RUN MANUAL PROGRAM button and then hold down the spindle. The irrigation cycle will stop and the word "RAIN" will be displayed in the display until you release the spindle. This confirms the micro-switch and communication to the controller are functioning properly. 

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    Mdr-vdmschool

    Will the SLW15 control an SL1600 station in standard mode?  We have found the timings that work best for our environment and it would be preferable if the SLW15 could act as a simple on/off switch for the controller.  We just had a storm come through with more than an inch of rain and there was no halt to the watering cycle, even though the antenna icon on the SL1600 was flashing, indicating there had been a recent communication with the SLW15.

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    Darren Harris

    Yes, as long as the sensor mode is in ACTIVE. The rain/freeze portion of the weather station work independently from auto adjust, so you are fully capable of using the SLW15 in standard mode as your rain/freeze shut off device. However, the sensor must still be ACTIVE for the controller to respond to the event. 

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    Mdr-vdmschool

    Thank you for your response.  I gather that if the antenna icon shows on the SL1600, the sensor mode is ACTIVE.  Is that correct?  If so, I'm a bit puzzled why the watering cycle didn't stop after the last storm.  The rain level was set at 1/8", and we got quite a bit more rain than that.

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    Darren Harris

    You will need to do a manual check on the micro-switch. Hold down on the top spindle of the weather station and see if the ACTIVE light turns red. You will also see the antenna begin to flash, indicating a recent communication with the controller. If this test is successful, you may need to remove and clean the rain disc assembly as it may have dirt or debris restricting the spindle from engaging the micro-switch during a rain event. 

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