Speed Queen Washer Error Code HEATING LED Flashing

The flashing HEATING LED indicates that the machine control detected an open or shorted temperature sensor during the heating phase of the wash cycle. The control sensed a temperature reading below 32°F or above 212°F, which it recognizes as a sensor fault rather than an actual temperature. As a result, the heater output was turned off for that cycle, though the cycle completed normally. The error is displayed at the end of the cycle and clears when you open the door.

The washer is designed to complete the cycle and disable only the heater when this fault occurs, so there is no immediate safety risk from continuing to use it. However, any cycle that requires heated water will not heat properly until the sensor fault is repaired. Running heated cycles repeatedly without addressing the fault means your laundry will consistently wash in unheated water.

Repair cost depends on which component has failed. If the issue is a loose or corroded connector, the repair may cost little beyond a service call fee, typically in the range of $75 to $150. A replacement thermistor is generally an inexpensive part, with parts and labor often ranging from $100 to $200. If the machine control board itself requires replacement, total repair costs can range from $200 to $400 or more depending on labor rates in your area.

The washer completed the full cycle, so the mechanical wash action, rinsing, and spinning all occurred normally. However, because the heater was disabled, the water was not heated to your selected temperature. Cycles that depend on heated water for sanitizing or stain removal on temperature-sensitive fabrics may not have performed as intended, and re-washing with a working sensor is advisable for those loads.

The error clears automatically when you open the door at the end of the cycle, so a manual reset is not required. However, if the underlying cause, such as a faulty thermistor or damaged wiring, is not repaired, the fault will reappear during the next cycle that uses the heater. Clearing the indication does not fix the root cause.