My otherwise quiet pump motor started making what i can only describe as an "electrical" buzzing noise today. Everything else seems fine. Water is moving, chemistry is fine, pressure on top of filter reads 12 psi. Impeller was recently cleaned out, and new o-rings installed, and I know what a clogged impeller sounds like. This is not the case now. The noise is not unlike what you hear when you are around "buzzing" electrical equipment.
Pool is about 8 yrs old; bought the house 3 yrs ago, so I cannot speak to maintenance on the motor itself.
Any thoughts from you guys?