E14
AquaFlo Phase Loss / Phase Imbalance (for 3‑phase AquaFlo models)

Controller shows E14 and pump will not start; often after incorrect wiring changes.

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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

Missing phase at supply, Loose phase connection at terminal block, Blown fuse on one leg, Miswired contactor

How to Fix / Troubleshooting

Safety first: Three-phase systems can be hazardous. Turn off and lock out the main disconnect. Only qualified personnel should work on these circuits.

  • Verify all phases present: With power ON and pump disconnected, measure voltage between all three line pairs (L1–L2, L2–L3, L1–L3). All should be within the specified range and balanced.
  • Inspect terminal block: Turn power OFF. Tighten all phase connections at the AquaFlo motor terminal block and upstream contactor.
  • Check fuses and breakers: Inspect any inline fuses or 3‑pole breakers for a blown leg. Replace as needed.
  • Confirm wiring diagram: Compare actual wiring to the AquaFlo motor wiring diagram to ensure correct phase connections.

If E14 persists with balanced three-phase power, the internal phase detection circuit in the drive may be faulty.

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Repair Difficulty

Professional Required 5/5

Required Part

AquaFlo 3-Phase Motor Terminal Block
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