All zones stayed on all night


#1

Loved the controller’s water saving feature and auto seasonal adjustments while it lasted. However Sunday night it went on a wild ride turning one after another zone ON and leaving them ON. In the morning 3 of 4 zones were left ON all night! So all my two year water savings were lost in single night. I unplugged the unit and thankfully all zones switched off but I haven’t tried plugging it back yet. I have lost the confidence to use this controller unsupervised at night. The software should have a fail safe power cut to the solenoid in case there were issues during watering cycle. Else we are losing the benefit of this wonderful idea.


#2

When you unplugged the controller, were any lights blinking?

Did your app show active running zones?


#3

No blinking lights, app status said “finished 21 minutes of watering cycle”


#4

When you plug the controller back in, do the zones activate?


#5

If you had multiple zones stuck on, it wasn’t the controller. It physically can’t/won’t run more than one at a time. You have a stuck valve somewhere. Usually the diaphragm inside them will wear out and stick open.

Disregard. I see that you said it shut everything off when unplugged. I still am not sold that it is a controller issue. Are you sure there hasn’t been a wiring problem that has risen?


#6

Contact Rachio technical support. Was everything flooded? Since the controller can only operate one valve at a time, this a stuck valve issue or a wiring issue. How old is your system and what brand and model of valve do you have? A valve can easily be rebuilt without cutting it out if the valve is still on the market or repair parts are still avaiable.


#7

Thanks everyone for pitching in. I will power it on again this weekend and update this post with results . One other thing that I forgot to mention was that the sprinklers were not on full throttle but close to 50% strength. I still doubt it has to do anything with valves since all zones switched off when I unplugged the unit. It’s a gen 1 rachio that I purchased in April of 2016.


#8

Could you possibly have a main line break? Just thinking of another possible reason.


#9

I powered on my controller today and tried manual cycle. I found out that while zones 1 & 2 are fine, zone 3 switches on both zones 2 & 3 which is why the sprinklers where not running full throttle. I tried to repeat the exercise with old rainbirrd controller and found same behavior. So we can rule it out as rachio issue. I will have my sprinkler guy look at the valves.


#10

@stahuja - thanks for the update. If you have an ohm meter check the resistivity between the wires going to zone 2 and zone 3, as it may be a wiring fault.


#11

@stahuja Thanks for the update. Does your system have a master valve? If so, activate an open terminal with no wire and see if any zones activate.