I have a 6 station Richdel 205 valve system powered by a new Orbit controller. 5 of the 6 valves function correctly. I have checked the following on the malfunctioning valve: a) the 24volt signal at the solenoid is on and off as it should be when the controller is manually activated for this station; b) the solenoid is new, clean and functioning; others also tried; c) the diaphram is new, clean, installed properly; the spring is good; others also tried; The only control over valve functioning is...
