I have a Trane gas fired furnace that received a soaking when the Coil drain clogged, and ran water all over the White rogers module. The original board is a 50A50-406, I replaced with the replacement 505A55-288-05 recommended by White Rodgers. When plugging in the new board it goes to a 5 flash code, starts the exhst blower, the circ. blower.
It also does this with nothing but the molex plugged in.
I have 24v in but nthing at r and c. Tried another board, no go. Could someone enlighten me? Is perhaps the wiring harness saturated, did leave a fan on it all night.