Neff U15E52S3GB/01 oven light relay pulsing

Hi All
I have the above Neff double oven where the power module keeps pulsing the main oven bulb on and off.
I’ve checked all the components and checked for earth leakage and all seems fine and I’ve returned today with a new power module and still get the same fault but now with the odd E005 error which is a communication problem.
Has anyone come across this before or have any info that may help

Thanks

dave