Festo Single Acting Valves

[Mike Rush]

I've been doing this too long to be this frustrated. These single acting valves are driving me crazy. Last year we had the same issue and I ignored it. This this year we need the valve. The code is working, the green light on the relay module lights, the led on the valve lights, there is more than 30psi on port 1 (the input) and I can operate the valve manually but the valve will not switch states electrically. I know, the valve is bad, but two at the same time? I'm just missing something and I'm not sure what...