Washer shows F23 and may not heat, or may stop during warm/hot cycles.

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

Open or shorted NTC sensor, failed heating element, wiring fault between the heater/NTC and the control, control board sensing circuit failure.

Safety First: Disconnect power and allow the unit to cool before testing heater components.

Step-by-step checks:

Test NTC: Remove the rear panel and locate the temperature sensor. Measure its resistance at room temperature and compare it to the specification. Check for smooth resistance change with temperature.
Test heater: Measure heater resistance and check for shorts to ground, as described in F07.
Inspect harness: Verify that all connectors are tight and wires are not damaged.

When to replace: Replace any defective NTC or heater. If both are functional and wiring is intact, replace the main control board.

Medium 3/5

Water Temperature Sensor (NTC)

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