My sprinklers decided to schedule a 45 min watering on its own. 

Only noriced it was on when there was onlt one minute left.

Now rhe manual operarion is somehow set at 45min and even if I chanfe it to one minute it goes back to 45. I worry it will go off in the middle of the night at unschedule time. 

Water is precious where i live. We havent had any rain since November. 

How can I stop the app to set schedule on its own for crazy amount of time?