I thought you diagnosed it as the board?? So new board and new thermistors leaves the defrost heater and defrost thermostat you need to check.it’s still not defrosting,
Something like that. The buttons and the display are all part of the display assembly/board/module. The -9 in the display can't be changed either by the main board or user input. If there's communication voltage between the boards, something on the display board is is keeping the -9 from being changed.just that one part of the board is bad?
Update: tomorrow the tech is returning to replace the board, again. All they seem to think is the board they got the first time was faulty. Still reading -9 on the freezer display and still not defrosting.
Maybe I worded that wrong, I don’t know if they are “at a loss” just obviously frustrated as well lol. After this board is replaced, if it still has issues, the supervisor has another tech from another area that he’s going to bring over to service it and see what he comes up with.I think you better get a new company.
It’s been mentioned. Not sure if they are bringing it tomorrow or waiting to see what happens after the replace the main board again.You should tell them to bring a dispenser board also