I have a Hotpoint WDF740P Washer/Dryer that has started to display a F-01 error code. This would seem to be related to a possible triac fault or Control PCB / Module fault. One recommendation is to visually check the Control PCB / Module and it's connections. My problem is I cannot find a drawing showing the location of this PCB / Module for my machine. I have located and removed the "Display PCB" from behind the main panel with the LED display and selector knobs / buttons, however I am unclear if this is the Control PCB / Module that could be causing the F-01 fault. I cannot see any component that looks like a Triac on this PCB, nor can I see any AC - DC circuitry, this leads me to believe that there must be at least one other module somewhere in the machine, however I can't seem to locate it.
My first question is, "Is this PCB the Main Control PCB / Module, and is the Triac located on this board?".
My second question is "if not, where is this PCB / Module located?"

Many thanks in anticipation,

Best regards


Andy Fisher