E03
Fhiaba TriMode / Auxiliary Compartment Temperature Sensor Fault

Error E03 displayed; TriMode or auxiliary compartment temperature reading is missing or unstable.

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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

Failed TriMode NTC sensor, Loose or corroded sensor connector, Harness damage in cabinet channel, Defective control board input for TriMode sensor

How to Fix / Troubleshooting

Safety first: Disconnect power before accessing the TriMode compartment panels or control electronics.

Step 1 – Locate the TriMode sensor:

  • Remove the interior panel or cover in the TriMode compartment to access the sensor housing.
  • The sensor may be clipped to a small bracket or embedded in a plastic holder.

Step 2 – Inspect and test:

  • Check the sensor body and wiring for signs of moisture or physical damage.
  • Measure resistance and compare to the Fhiaba NTC chart; replace if out of spec.

Step 3 – Replace sensor if needed:

  • Install the new sensor in the same location to ensure accurate temperature sensing.
  • Secure the wiring to prevent rubbing or pinching when panels are reinstalled.

Step 4 – Control board check:

  • If a known-good sensor still results in E03, the main control board may not be reading the sensor correctly.
  • Board replacement should be performed by a qualified technician due to calibration and safety considerations.
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Repair Difficulty

Medium 3/5

Required Part

TriMode Compartment NTC Temperature Sensor
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