Dishwasher interior remains cold during wash, but no heating error code appears

Safety first: Unplug the appliance before testing electrical components.

• Program choice: Verify you are not using a low-temperature Eco program when expecting hot water.
• Check hot water supply (if connected): If the dishwasher is connected to hot water, ensure the supply temperature is adequate.
• Run intensive cycle: Run an intensive program and check if the door becomes warm. If not, test the heater and NTC sensor as described in heating-related error procedures.
• Professional calibration: If components test within range but heating is still poor, the control module may require replacement.