What happens when my pool pump hums but won’t start?

Electrical repairs can be hazardous or fatal if done improperly – always refer electrical repairs to a professional. There are several reasons a pump won’t ‘spin’, they are:

  • The starting capacitor has failed.
  • The start switch has failed or is fouled.
  • A damaged pump seal has allowed water into the motor which has caused the bearings to fail.
  • The stator or armature windings have burnt out
  • The pump impeller is bound and can’t spin.