Control panel shows E09 and spa cannot maintain temperature

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

Scale buildup on heater element, Partially blocked heater tube, Misreading temperature sensor, Low insulation due to missing cover

Safety first: Unplug the spa before any physical inspection.

1. Use the spa cover:
- Ensure the Intex insulated cover is properly fitted during heating.
2. Check filter and flow:
- Clean or replace the filter cartridge.
- Verify good water circulation.
3. Compare temperatures:
- Use an external thermometer to compare with the displayed temperature.
If E09 continues and heating is poor: Internal scaling or sensor miscalibration may require professional descaling or replacement of the heater pump unit.

Hard 4/5

Heater Tube / Element

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