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I recently installed a Rainbird ESPM controller and a Hunter Mini-Clik rain
sensor wired to the two SEN terminals. Worked like it should when tested by
suppressing the plunger on the top of the rain sensor.

Yesterday I
installed the same set up at another customer. When tested, the watering would
not suspend. I tried another new Mini-Clik and another new ESPM and it still
would not work. Finally I had to just break the common through the Mini-Clik
(the old way) to get it to work.

Any thoughts on why it worked correctly
one time and not the second time?

Thanks / Regards,

Mex