The part(s) or condition(s) listed below for the symptom Dishwasher lights flashing or blinking are ordered from most likely to least likely to occur. Check or test each item, starting with the items at the top of the page.
The heating element heats up the water to operating temperature. If the water doesn’t reach the proper temperature after a set amount of time, a light on the control panel might start flashing. To determine if the heating element has burned out, use a multimeter to test it for continuity. If the heating element does not have continuity, replace it.
If the dishwasher lights are flashing or blinking, and there is an error code in the display window, consult the wiring diagram, tech sheet, and dishwasher manual to find out more information about the error.
The drain pump uses an impeller to force water through the drain hose. If the drain pump is not working, a light on the control panel might start flashing. To determine if the drain pump is defective, check the pump motor for continuity using a multimeter. If the motor does not have continuity, replace the drain pump. Drain pumps are not repairable—if the drain pump is defective, you must replace it.
First, confirm that the display is working. If the display is working, try pressing the touchpad buttons. If some of the buttons don’t respond correctly, it is possible that the entire touchpad and control panel is at fault. (Some manufacturers sell the touchpad separately from the control panel. Other manufacturers require that you purchase the touchpad and control panel together. If you cannot replace the touchpad individually, replace the touchpad and control panel.)