I am running a BCS controlled HERMS rig with SSRs switching the power to my heating elements and a March pump. For some reason, the pump will not start when plugged into the outlet fed through the SSR. It makes a loud humming noise and you can see the internal fan turning very slowly, but it never gets going. If you plug the pump directly into an always hot outlet, it starts and runs fine. The weird part is that if you start it on the hot outlet and then quickly plug it into the switched outlet before it has time to completely stop, it will run fine. I am starting to think that the motor is not drawing enough current through the SSR to start moving. I have tried swapping out the SSR with no luck. Has anyone ever heard of a problem like this or have any ideas as to what might be causing it?