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Tuesday, March 24th 2009, 10:43am

There are open circuit and closed circuit rain sensors. Follow the wiring advice of Lush 96 and add a small jumper wire between the two rain sensor terms as aquatech wrote. The rainsensor does nothing more then cut the electrical loop from the timer to the valves. When the sensor is activated, the light will still come on. The timer will continue to run as it would, but no power is sent to the valves. Most rain sensors have a battery life of 5 years, so consider changing the batteries also. You can simulate the rain sensor activation by using a ladder to access the sensor and gently click and hold down on the top of it. Watch a nearby zone go up and down. The timer will also have to run in the bypass mode from here out.


Active Member


Tuesday, March 24th 2009, 1:08pm

RE: check the batteriea

If they are going bad or are dead, the sensor will not work right.
call me dumb but they have factory batteries that are 12 years.


Supreme Member


Tuesday, March 24th 2009, 7:53pm

If the system USED to work, nothing has happened that likely damaged the controller or wiring, and the rain sensor is wireless, the most likely point for the breakdown would be the communications between the sensor and the unit that connects to the controller. If so, then re-wiring the system won't solve the problem.

The simplest and cheapest way to attempt a quick fix would be try replacing all batteries (are there batteries in the base unit?).

After that, double checking the bypass setting as others have mentioned.

Finally, you might want to attempt to reprogram the transmitter address. The instructions say you shouldn't have to unless one of the parts was replaced. Here's some instructions I found with a Google search.,2005.pdf

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