My Hayward Power Flo pump just hums when I turn it on. Was running fine less then 24 hours ago. Any suggestions?
Take a small hammer and tap the motor casing a few times, This can “free up” any dirt / rust on the motor armature,
If tapping the pump motor a few times does not get the pump to go, let me know and I can suggest something else.
You might also want to check out this video:
My Pool Pump Motor Is Humming
Let me know if you need more help.