Originally Posted by
pearson2
I installed a 50A50-241 with a universal replacement part 50A55-843. All the connections were easy enough to transfer till I got to a white wire in slot E21 on the original Mode. The replacement does not have a slot E21 and I am getting the following error message:
115 volt ac power reversed improper ground. Can anyone suggest what I need to fix this problem? Thanks
Where line 1 and line two connect to the board, try reversing these two wires and see if there is a difference, of if the code changes.
Also did you disconnect a wire from the old board that is connected to the houseing of the furnace. If you did and that wire is still connected to the furnace there is probably a place that it should be connected to the new board.
I hope this helps.