Primus Excessive External Heating

Washer door or surrounding area becomes very hot during high-temperature washes.

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

Overheating heater due to scale, Faulty NTC sensor misreading temperature, Insufficient insulation around tub, Very long high-temp cycles

Safety first: Unplug the washer and allow it to cool before inspection.

Check temperature: Verify that the selected program temperature matches expectations. High-temp disinfection cycles will naturally heat the door more.
Descale heater: Run a descaling cycle with an approved descaler to remove limescale that can cause localized overheating.
Test NTC sensor: Measure NTC resistance and replace if readings are out of specification.
Usage advice: Avoid running consecutive high-temperature cycles without cooling periods.

Medium 3/5

NTC Temperature Sensor

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