E13
AquaFlo Internal Drive Overheat / Inverter Protection

E13 displayed; pump stops unexpectedly and may restart after a delay.

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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

Blocked cooling fins on AquaFlo drive module, High ambient temperature, Failing internal cooling fan (if equipped), Excessive load from plumbing system

How to Fix / Troubleshooting

Safety first: Turn off power at the breaker before touching the drive module or removing covers.

  • Clean cooling surfaces: Inspect the drive heat sink and fins on the motor or control module. Use a soft brush and compressed air to remove dust and debris.
  • Check internal fan: On models with an internal cooling fan, listen for fan operation when the pump runs. If silent or noisy, the fan may be failing and should be replaced.
  • Improve ventilation: Ensure the pump is not enclosed in a tight space. Provide additional ventilation or a small fan if necessary.
  • Reduce system head: Temporarily lower pump speed or open valves to reduce backpressure. If the pump runs without E13 at lower load, consider adjusting programmed speeds.

Repeated E13 errors after cleaning and ventilation improvements indicate a failing drive; replacement of the AquaFlo drive module or motor is recommended.

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Repair Difficulty

Hard 4/5

Required Part

AquaFlo Motor Drive Module
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