My unit started blowing cold air with 4 flashes on the control board. After Ohming everything out it was determined that the control board was at fault. My unit is 11 years old and had White-Rogers part number 50A65-475 control board. According to every source I could find that old board was replaced with a 50A65-843. Installed the new control board and now I have 5 flashes indicating a Rollout error. The unit doesn't seem to have a rollout sensor. When I look at the large connector that plugs into the control board the RO1 and RO2 spots don't have any wires in them.
Should these be shorted together on the new control board?