Dishwasher shows F9 E1 and may not heat correctly.

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

NTC sensor out of range, Poor water circulation causing localized overheating, Scale on heater, Control misreading temperature

Safety first: Unplug the dishwasher.

Descale: Run a descaling cycle with a dishwasher descaler to remove limescale from the heater and sump.
Check circulation: Ensure spray arms and filters are clean to maintain good water flow over the heater.
Test NTC: Measure the NTC sensor resistance at room temperature and compare with specifications. Replace if out of range.

Hard 4/5

NTC Temperature Sensor

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