Re: Diplomat ADP 8902 issues….
It’s a SMEG dishwasher – the Haier would not have lasted “for many months” 😀 .
The flashing lights are not a recognised error code. It is possible that the computer board has become corrupted. Oddly enough this is often caused by problems with the soap dispenser solenoid. Replacing it may clear the problem, but sometimes the board is beyond help.
You could try re-setting the computer – use the “Search” facility in this forum only. “SMEG AND reset” should find it for you.
If you choose to investigate, ensure that the power is off and beware of the edges of the inner door. You can shave with them.
Regards,
Penguin45.