Bosch Refrigerator Error Code F44

F44 on a Bosch refrigerator indicates that the temperature sensor on the ice rod has failed to reach or drop below 0°C within a one-hour window during an active ice making cycle. The ice making system relies on a dedicated temperature sensor mounted on the ice rod to confirm that the rod is cold enough to freeze water and complete a production cycle. When that sensor continues to read above freezing for a full hour, the control board logs F44 and typically halts the ice making function to prevent repeated failed cycles.

The root cause is generally found in one of four areas: the ice rod temperature sensor itself, the shut-off valve controlling water flow into the ice maker, the refrigerant solenoid valve that routes refrigerant to the ice making circuit, or a broader refrigerant circuit issue. A failed or out-of-calibration sensor may report incorrect temperatures even when the rod is actually cold, triggering a false fault. Conversely, a malfunctioning solenoid valve may restrict refrigerant flow to the ice maker evaporator, preventing the rod from cooling adequately.

Refrigerant circuit problems, including low charge or a blocked capillary, would also limit cooling capacity at the ice maker without necessarily affecting the main refrigerator compartment. Technicians should begin with a resistance check on the ice rod sensor and verify valve operation before moving to refrigerant pressure testing, as sensor and valve failures are more common and less costly to address than refrigerant circuit repairs.