GE Dishwasher Error Code Normal Wash LED flashing

The rapidly flashing Normal Wash LED on a GE dishwasher indicates a Not Heating fault. The control has detected that water temperature rose by less than 8°F during a 15-minute period in a heating cycle. The heating element relay is de-energized when this fault is active, but the wash program continues to run. The most common causes are a failed heating element, a faulty thermistor, or a wiring connection problem.

The dishwasher will continue to run through its cycle even with this fault active, so it is not immediately dangerous to operate. However, without proper heating, your dishes will not be cleaned or sanitized effectively, and any wash cycle requiring heat, such as a sanitize cycle, will not perform correctly. It is best to diagnose and correct the fault before relying on the dishwasher for heavily soiled or sanitized loads.

Repair costs vary depending on which component has failed. A replacement heating element typically ranges from around $20 to $60 for the part, while a thermistor is generally less expensive. If the control board relay or the full control board needs replacement, parts alone can range from $80 to $200 or more. Adding professional labor, a full repair can range from $100 to $300 or higher depending on the failed component and local service rates.

Some aspects of this repair are approachable for a knowledgeable DIYer. You can inspect wiring connections, test the heating element for continuity with a multimeter, and check the thermistor resistance without specialized tools. Replacing the heating element is a moderately involved repair that requires accessing the inside of the tub and the underside of the dishwasher. Control board replacement is more complex and may be better handled by a technician.

A reset may temporarily clear the flashing LED, but the fault will return if the underlying problem is not corrected. Because the control triggers this fault based on a measured temperature rise of less than 8°F over 15 minutes, the same failure condition will be detected again during the next heating cycle. Resetting is useful for confirming whether a fault is intermittent, but it is not a permanent fix for a failed heating element, thermistor, or wiring issue.