Hayward Drive Inverter Noise or Failing Drive Components

Pump runs but makes a high-pitched whine from the drive area (variable-speed models).

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Normal inverter switching noise at certain speeds, Loose drive cover or components, Failing capacitors or inductors on drive board

Safety first: Turn off power before opening the drive housing.

Confirm normal behavior: Some high-pitched noise is normal at specific RPMs. Compare to manufacturer expectations.
Tighten covers: Ensure the drive/control cover and mounting screws are tight to prevent resonance.
Inspect components: Look for bulging capacitors or loose inductors on the drive board.
Monitor operation: If the noise is accompanied by errors or overheating, the drive may be failing and should be replaced.

Medium 3/5

Drive Control Module

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