Hi Ray,
Thanks for the response. I’m not using pump start relays, they’re just standard 24VAC solenoids (the original was a Weathermatic 12000, and when it stopped working I replaced it with a brand new Weathermatic N100 I had spare). One master solenoid is on town water, and the other from a tank which has an automatic pump, so they’re both always pressurised (the pump switches on when it detects a pressure drop).
Cheers,
Leighton Haynes