My dishwasher has stopped working...the lights on the controls on the top of the door just keep blinking. The center 4 lights blink: "Sanitized", "Refill Rinse Agent", "Power Scrub Plus button", and "Rgular Wash button". There is water still in the bottom of the unit. Powering the unit on and off does not reset it...it just keeps blinking while the power is on. What can I do to troubleshoot / fix?