While you wait for answers, we may have found some information which could help you.
Click here for Dishwasher Lights SoundFisher and paykel DW820 beeps after rinse cycle?
How to fix a Fisher and Paykel DW60CSW1 Dishwasher?
re Fisher and Paykel Dishwasher Model DW820?
fisher and paykel dw920 cycle will not stop?
Fisher and paykel Nemo not starting wash pump?
My fisher and Paykel dishwasher DW820 is not fully drained ?