Berkeley Pump S39518 Wont Start
I have a Berkely S39518 pump with PSR-22 Pump Start Relay. Controller and PSR seem to be working fine, as I can see 120V at the pump motor terminals. I hear a buzzing from the motor for about 3 seconds but it won't kick on, then buzzing stops. This repeats every few minutes. It's almost like the pump motor tries to start, then some kind of protection circuit shuts it down. Occasionally (but rarely), it will kick on and everything's fine. Everything else seems to be OK, as it runs fine through all the zones, there's just very low pressure since the pump doesn't start. Any ideas?