Why are there deposits in the water tank (stainless steel base)? 12 March 2020 11:52 The base is furred up. The appliance must be cleaned. Related articles How should I clean the basket? How should I clean the steamer base? The steamer stops or beeps even though there is still time left on the programme. Safeguards An “ERR” message is displayed on the digital screen How do I cook rice in the multifunction bowl?