Replace the motor if it is burned, the shaft is jammed, or if there is any sign of damage. To troubleshoot a split-phase motor, apply the following procedure: Caution should be taken with any motor that has an automatic reset, as the motor can automatically restart at any time. Thermal switches may have a manual reset or automatic reset. Some split-phase motors also include a thermal switch that automatically turns the motor OFF when it overheats. The starting winding is automatically removed by a centrifugal switch as the motor accelerates. The split-phase motor has a starting and running winding. Troubleshooting split-phase (single phase) motors If the motor is less than 1/8 HP, it is almost always replaced.
However, if the motor is more than 10 years old and less than 1 HP, the motor is usually replaced. If the problem is in the centrifugal switch, thermal switch, or capacitor, the motor is usually serviced and repaired. Most problems with single-phase motors involve the centrifugal switch, thermal switch, or capacitor(s).
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