OpenSprinkler › Forums › Hardware Questions › S1-S8 don’t operate properly when expansion connect › Re: Re: S1-S8 don’t operate properly when expansion connect
May 30, 2014 at 3:55 pm #27064
Do you have sprinkler valves connected and you can see that S8 is always on from the valve action, or are you just measure the voltage? When there is no-load, there are often stray voltages which are not reliably indicators of whether the station is on or off. When a valve is connected the stray voltage should go away.