Underground irrigation rain sensor problem

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ccpyue

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Hi,

I have an 8 years old underground irrigation system with a Rain Sensor installed. I use it every summer and seems working very well. This summer, I tried to test the Rain Sensor. I made sure the system is passed through the Rain Sensor. When it start irrigating, I used a sprayer to spray water over the Rain Sensor, it did not stop the system from working. So I tried to set the system will work in about 5 minutes time, and I start spraying water over the Rain Sensor continuously, but the system still work after the 5 minutes. I have tried to set the Rain Sensor 1/8, 1/4, 1/2 etc. Outcomes are all the same.

Could anyone tell me how is the Rain Sensor works, and is it possible to fix it?

Thank you.
(see photo)

Hunter%20Rain%20Sensor.jpg
 
Last edited by a moderator:
That was a great video Neal. Thanks, since my sensor has also been giving me problems and I need to test it!
 
wow, this explain everything. Thank you so much Nealtw.
 

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