E19
Aqmos General Sensor Calibration Fault

E19 error and unit indicates sensor calibration failure

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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

Out-of-range readings from flow, temperature, or salt sensors, Incorrect installation of sensor, Damaged sensor wiring, Firmware incompatibility after board replacement

How to Fix / Troubleshooting

Safety: Unplug the unit before handling internal wiring.

  • Identify sensor: Refer to the Aqmos manual to determine which sensor is associated with E19 (flow, temperature, salt, etc.).
  • Check installation: Ensure the sensor is installed in the correct orientation and location (e.g., flow arrow pointing in direction of flow).
  • Inspect wiring: Look for pinched, cut, or abraded cables. Repair or replace damaged wiring harnesses.
  • Recalibrate if supported: Some Aqmos models allow sensor calibration via the service menu. Follow the on-screen instructions carefully.
  • Replace sensor: If calibration fails and wiring is intact, replace the affected sensor with an original Aqmos part.
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Repair Difficulty

Medium 3/5

Required Part

Associated Sensor (Flow / Temperature / Salt)
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