Aj for Model Number FDB4315LFCO Hi, with this dishwasher, the unit had shut itself off during the drain cycle and came back with a PF code, so I replaced the drain pump. It now sometimes makes it through a drain cycle, but not every time. I had seen a uF (vent fan speed) error code, but I ran the unit pulled out from under the counter and I could see the fan was operating seemingly fine. There was also one time after a successful cycle that simply opening the door led to the unit shutting down and coming back up with a PF code. That all leads me to believe it's the control board, but I'd like some feedback that it is the next best thing to try. Thanks!
Answer Hello A.J., The first thing I always do on a PF code is to turn power off to the unit and remove the kickpanel. Open the power connection box on the left behind where the kickpanel was mounted. Check for loose connections in this junction box. You need to think of it like this: When there is a loose connection, this increases the resistance at that point. This cause more current to be required to get across the loose connection. When the high current gets across the point of high resistance, this current normally opens the breaker or the thermal fuse, (if the unit is so equipped). After all connections in the circuit have been verified, (to include connections to the breaker and any junction points between it and the unit), and no problems have been located, replace the board. If the board is replaced without checking the above, the new board could be toasted as soon as power is applied. Read More... Answered by AppliancePartsPros.com | Monday, October 6, 2014