1, residue blockage: the milk foam machine does not boil water, which is caused by the residue blockage caused by the corrosion of the boiler by fermented milk. Clean the boiler, and unscrew the screws at the boiler outlet for cleaning.

2. Poor contact: Poor contact causes the milk foam machine to fail to boil water. Check the sensor switch above the boiler and the electronic switch on the measurement and control panel to eliminate poor contact.

3. The steam nozzle is blocked: the steam nozzle is blocked and there is no boiling water in the milk foaming machine, so as to ensure that there is no problem with the line. Remove the steam nozzle and check the blockage.