Model DD603 from Fisher & Paykel is the dishwasher. As soon as the circuit breaker is activated, the control board starts heating the heater plate. No light comes on from the LCD board.
Thank you for reaching out. This does look like something that we service, depending on your issue. The issue sounds like it could be the keypad is at fault. It seems as though once turned on the appliance jumps into action. There could be a button stuck causing an open circuit. We can 100% test to ensure the pins from the board to the keypad are getting signal however, the issue would be in the keypad if the board is repaired and the pins were confirmed good. Below I have provided a link that can get you started on the ordering process. Select 'Constant heating' The link will let you know what issue will be covered under the repair. Any issues outside of the advertised will not be addressed.
A full diagnostic check should first be performed to eliminate all other possible causes for your symptoms, even if the symptoms match those specified on the common fault description. If you are not sure that this part is the cause of the fault then we recommend that you do not go ahead with this purchase and instead seek further professional advice and diagnosis. If you have any questions, feel free to reach out. We look forward to working with you.
https://www.upfix.com/product/fisher-and-paykel-dd60p51-dishwasher-control-board-repair/