When is “Sen” normal to be seen on an Irritrol RainDial?
What to try if you do not have an Irritrol RainDial or other rain sensor:
- Some back connector boards have a rain sensor selection switch that can be set to either Bypass or Active. Make sure it’s set to Bypass if you don’t have a rain sensor.
- If you have sensor connection screws but no switch, (and no rain sensor or you removed a sensor that’s no longer being used) there should be a jumper wire between the two screws. If the wire is missing you can just add a wire between the two sensor screw terminals. FYI: The switch on the board (if you have one) basically does the same thing as the jumper, it connects the two sensor terminals together.
The most likely problem:
If you do not have a rain sensor and get this message, it’s usually a “real” problem that will be intermittent and eventually get worse as time goes by and it’s hard to detect because the message may only appear when you are not looking at it.
It’s caused by a circuity problem that we frequently repair. Simply mail the controller module and back connector board to us and we’ll have it working better than new in no time.
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