My hot point FDW70 has error A10 showing?

The machine will begin any programme cycle and the drain pump will fire up as usual straight away. However exactly 2 mins into each try the machine beeps and Shows A10 fault.
I have stripped it down and used a multi meter on the flow heater which was fine, the water inlet valve which was fine and the pressure switch which I think was ok but was a 3 way connector. After reading forums it pointed the the PCB, just put a new one on and same damn fault A10!!! Someone please help, thankyou