Freezer shows error code H1 and the high-temperature alarm is active even though the interior feels cold.

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

Mispositioned temperature sensor, Sensor partially iced over, Loose sensor connection, Faulty NTC sensor

Safety first: Disconnect power before removing internal covers.

Inspect sensor location: Ensure the freezer temperature sensor is not buried in ice or pressed tightly against a cold plate, which can cause incorrect readings.
Defrost ice: If ice surrounds the sensor, perform a manual defrost to clear it.
Check wiring: Reseat the sensor connector at both ends.

When to call a technician: If H1 remains after defrosting and reseating, the sensor or control board may need replacement.

Medium 3/5

Freezer NTC Sensor

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