Comenda Boiler Underheating Without Alarm

Rinse water is cold; dishes are not sanitized properly though no specific error code is shown.

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

Partially failed boiler element (multi-section), Incorrect temperature setpoint, Faulty temperature sensor drifting, Undersized electrical supply

Safety first: Disconnect power before testing heating components.

Measure rinse temperature: Use a thermometer at the rinse outlet to confirm actual temperature.
Check setpoints: Verify boiler temperature settings in the control menu.
Test elements: Measure resistance of each boiler element section; replace any that are open or significantly higher than spec.
Sensor calibration: Replace the boiler NTC if readings are inaccurate.

Hard 4/5

Boiler Heating Element

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