OpenSprinkler › Forums › Hardware Questions › OpenSprinkler Pi (OSPi) › Valves not closing, getting hot and some other issues › Reply To: Valves not closing, getting hot and some other issues May 30, 2018 at 3:24 pm #50318 RayKeymaster This is clearly a 24V DC adapter — check its output voltage, it’s DC, not AC. You have to use AC adapter, which means the output voltage must be AC.
