What should I do if the ultrasonic function of my EMAG Emmi 280HC cleaner is not working?

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If the ultrasonic function of your EMAG Emmi 280HC (1200 W max, 40 kHz) is not working, here are the checks to perform in order.

First, check the power supply: make sure the device is plugged into a functional power outlet at 230 V / 50 Hz. Test the outlet with another device to confirm it works. Also, check that the cable is not damaged and that the plug is properly inserted.

Filling the tank is crucial: fill the tank with water up to three-quarters full (about 1-2 cm below the top edge). The device can only operate correctly if it contains enough liquid. An insufficient water level completely blocks the ultrasonic function. After filling with fresh tap water, allow a degassing period according to the hardness of the local water, or better yet, run the device filled with water for 10 minutes before placing your items. This aeration step is often forgotten and prevents proper operation.

Check the settings: press the power button (ON/OFF). Using the three rotary knobs, set the duration (1 to 60 minutes), the desired temperature (20 to 80°C), and especially the ultrasonic power by setting the selector to a medium or high position. Do not set the power selector to zero. If you have selected continuous mode by turning the timer to the left, switch to a set duration for better control.

Listen and observe the operation: once turned on, you should hear a slight humming or characteristic noise emitted by the 12 transducers at 40 kHz. You may also see slight movements or vibrations in the liquid. A complete absence of sound or vibration indicates a problem with the ultrasonic system.

Check the condition of the tank: ensure that the stainless steel tank is clean and free of debris, limescale, or chemical residues that could block the transmission of ultrasound. Clean it with clear water and dry it with a cloth if necessary.

If after these checks the ultrasonic function still does not work, the device requires professional diagnosis or repair. Consult the EMAG customer service (tel. +49 (0)6105 - 40 67 00). The Emmi 280HC comes with a 24-month warranty covering material and manufacturing defects. To invoke the warranty, keep your proof of purchase with the date.

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