Just replaced an old seized pump with exact BRAND NEW kind from Century and got the dreaded "humming not running" issue and went thru all typical culprits of capacitor function, voltage, free-turning impeller, etc - no dice. While removing starting capacitor on back of motor noticed the wire was pinched between the capacitor and motor housing grounding it out! Freed the wires and BOOM! Pump now running great.
Just wanted to post this in case anyone else out there is banging their heads like I was for a while.
Gonna drop a note to Century to revisit their quality control, too.
Pic below showing where wires pinched.
Happy swimming.

Just wanted to post this in case anyone else out there is banging their heads like I was for a while.
Gonna drop a note to Century to revisit their quality control, too.
Pic below showing where wires pinched.
Happy swimming.
