Indesit IDL500 dishwasher flashing lights.

Indesit IDL500 dishwasher. 37300400000. Serial no:- 111141085.

Set to any program, start , machine pumps, fills…..then lights 1 and 3 flash and the machine drains and beeps. Lights are difficult to cancel.
The UKW fault book shows 1 + 3 to be filter blockage. Filters are clear and pressure pipe is clear, pressure chamber seems clear also.
So I thought, Bit100 PCB… notoriously unreliable……and ordered a new one. Same fault on new PCB. Although the new PCB didn’t match the old one in any way, well OK, it looked the same. Every number on the labels was different; even the one printed on the PCB itself.
Could it be the flowmeter? I’ve only just thought about that…… 😳

With the Bit100 PCB’s failing continuously now, is there any surefire way of getting the right one for the machine you order it for? I have ordered 3 PCB’s from Connect of late and only one worked as it should. There are more than one for each machine and the numbers on the label stuck to the boards never match the original. I am very confused as to how you can ascertain what you have is in fact what you need. Connect’s description and info is not at all clear and sometimes no info at all is shown. It then becomes almost a lottery to get the right one.
Is there any other way of identifying these boards and what do the numbers on the board labels actually refer to?? 😕

Any help appreciated!!

Thanks,

Steve.