Bosch smv4hvx00g/75 dishwasher. Accidental use of fairy liquid. The dishwasher is new but now stuck in error code E-31, which Bosch say is its anti-flood mechanism. No visible water or foam in the main compartment or below dishwasher. The dishwasher was turned off overnight at mains. Also a request to bleed the 4 radiators in the house.