OpenSprinkler › Forums › Hardware Questions › OpenSprinkler Pi (OSPi) › OSPi running fine but valves are Buzzing/chattering? › Reply To: OSPi running fine but valves are Buzzing/chattering?
July 18, 2016 at 9:20 pm
#43497
Ray
Keymaster
Buzzing noise is normal, because the 24VAC is at 60Hz, which is a fairly low frequency and can result in chattering noise.