The clean light on my Whirlpool Quiet Partner II is flashing in a seven blink series. Occasionally if I hit cancel the dishwasher sounds like it starts but it doesn’t stay.

I have seen the reset code series of hitting the heated dry button and normal and the normal lights will come on but it doesn’t reset. I have tried with the DW door open and closed. I have turned the power off and on and tried again. What should I try next?

Thank you
H