E05
Intex Water Flow / Filter Error (alternate code)

Control panel shows E05 and spa stops heating

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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

Dirty filter cartridge, Partially blocked inlet/outlet, Air lock in heater, Weak circulation pump

How to Fix / Troubleshooting

Safety first: Disconnect power before servicing the filter or hoses.

  • 1. Clean/replace filter:
    • Remove and rinse the Intex filter cartridge.
    • Replace if necessary.
  • 2. Check water level and ports:
    • Ensure water level is correct.
    • Clear any debris from suction and return ports.
  • 3. Bleed air:
    • Open the air release valve on the pump until water flows steadily.
  • 4. Restart:
    • Reconnect power and test.
  • If E05 persists: The circulation pump or flow sensor may need replacement.
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Repair Difficulty

Medium 3/5

Required Part

Circulation Pump in Heater Pump Unit
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