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Menu master microwave Error ???. What does it mean?

Question asked by Guest on Jul 29, 2017
Latest reply on Jul 31, 2017 by ectofix

Hi! We have been working on menu master model # mrc22s2 serial # 1401100698. After unit works for a while and it stops working it displays Item: ???u.: on top and 00:06.   MW 100%. Anybody had this eerience if so what could it be the problem? Please help.