E05
Jacuzzi Drive Module Internal Fault / Self-Test Failure

Pump display shows E05 and motor will not start; sometimes occurs after lightning or power surge.

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Safety Warning

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.

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Possible Causes

Surge-damaged control board, Corrupted firmware in drive, Shorted low-voltage components, Moisture intrusion into control housing

How to Fix / Troubleshooting

Safety first: Disconnect power at the breaker before opening the control enclosure.

Steps to check:

  • Inspect control housing gasket: Remove the Jacuzzi control cover and check the perimeter gasket for damage or gaps that could allow water in.
  • Look for moisture: If condensation or water is present on the control board, dry the area gently with a clean cloth and allow several hours of drying time before reapplying power.
  • Check for burn marks: Examine the PCB for burnt traces, cracked components, or bulged capacitors.
  • Power reset: Turn power off for at least 5 minutes, then restore power and see if E05 clears.

Persistent E05 after a proper reset almost always indicates a failed drive/control board. Replacement of the Jacuzzi control module is typically required.

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Repair Difficulty

Hard 4/5

Required Part

Jacuzzi pump control board / drive module
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