Hi folks, I have an SMS50E02GB/04 error code E09 coming up on a bosch dishwasher I have checked and it is not heating (as per error code) but as there are six wires to the heat pump I cannot confirm if the is supply to the heater. I know there is a modification as they have had problems with them. can anybody supply the wiring diagram for the heat pump and resistance readings. Many Thanks in advance Neil