High temperature alarm in the TriMode or pantry compartment; display shows AL03 and that zone cannot reach the selected temperature.

Safety first: Unplug the refrigerator before accessing internal panels or control boards.

Step 1 – Confirm settings:

• Verify the TriMode/pantry zone is enabled and set to the desired mode (refrigerator, pantry, or freezer) according to the Fhiaba user interface.
• Ensure the door for this compartment closes properly and the gasket seals.

Step 2 – Check airflow and fan:

• Listen for the TriMode compartment fan when the compressor is running. Some models only run the fan with the door closed; press the door switch to simulate closure.
• If no airflow is felt at the vents, remove the interior panel (power off) to access the fan and damper assembly.
• Inspect for ice or debris blocking the fan or damper. Clear obstructions and verify the fan spins freely.

Step 3 – Inspect damper or valve:

• Locate the air damper or motorized valve that feeds cold air from the main evaporator to the TriMode compartment.
• Check the linkage and foam seals; a stuck-closed damper will prevent cooling.
• If the damper motor does not move during a mode change (per service manual test), it may need replacement.

Step 4 – Sensor and control:

• Locate the TriMode NTC sensor and inspect its connector and wiring.
• Measure resistance if possible and compare to spec; replace if out of range.
• If fan, damper, and sensor are good but AL03 persists, the main control board may not be driving the TriMode circuit correctly. Professional diagnosis is recommended.