Heat pump heater shows E06; water temperature reading is erratic.

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

Failed water inlet NTC sensor, Loose sensor in water line, Damaged sensor cable, Control board fault

Safety first: Turn off power and close isolation valves before removing any sensor from the water line.

Inspect sensor location: Ensure the inlet sensor is properly inserted into its well or securely strapped to the inlet pipe with good thermal contact.
Check wiring: Look for damage or loose connections at the sensor and control board.
Compare temperatures: Compare displayed water temperature to an independent thermometer to confirm sensor error.

Replace the inlet sensor if faulty. If E06 remains, the control board may need replacement.

Medium 3/5

AstralPool Water Inlet Temperature Sensor

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