Display shows E20 and pump will not start after a brownout or flickering power

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

Corrupted firmware, Incomplete boot sequence due to unstable power, Failing microcontroller on control board

Safety first: Turn off power at the breaker.

Stable power reset: Leave the pump completely unpowered for at least 10 minutes, then restore power from a stable source.
Check for updates: If Aquaflow provides firmware updates via service tools, have a technician reload or update the firmware.

If E20 persists after a clean power reset, the control board will likely need replacement.

Professional Required 5/5

Aquaflow control board assembly

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