Bosch dishwasher washing/drying lights flashing

[grooster]

Hi,
I have a customer with a 26 month old Bosch dishwasher sps40c12gb/17 and when the power is in it flashes washing and drying lights alternately very quickly.
I don’t have the fault codes for these machines that don’t have a digital display. Does anybody know how to decipher it.

All help is appreciated as usual guys

Thanks

Nick

[Author]

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