Electrolux Dryer Error Code E66

E66 indicates an open circuit in the thermal limiter circuit, meaning one or more thermal limiters have tripped due to excessive heat inside the dryer. On gas models, both the outlet and inlet thermal limiters are monitored. The code can also appear if the wiring in that circuit is damaged or broken. The dryer will not heat or operate normally until the fault is corrected.

No, you should not continue operating the dryer while E66 is active. The code indicates a thermal protection device has opened specifically to prevent unsafe operating conditions such as fire risk from excessive heat. The underlying cause of the overtemperature event needs to be identified and corrected before the dryer is put back into service.

If the repair is limited to clearing a vent blockage and replacing a thermal limiter, parts typically range from around $10 to $40 depending on the specific limiter required for your model. If the cycling thermostat also needs replacement or wiring repairs are required, total parts costs can rise to $30 to $80 or more. Professional labor to diagnose and complete the repair generally adds $100 to $200 on top of parts costs.

A knowledgeable DIYer can diagnose and resolve E66 by first checking the exhaust vent system for blockages, then testing the thermal limiter or limiters for continuity with a multimeter. If a limiter is open, it must be replaced since thermal limiters cannot be reset. It is critical to find and fix the root cause of the overheating before replacing the part, or the new limiter will trip again quickly.

No, resetting the dryer will not clear E66 or restore normal operation. The thermal limiter is a single-use safety component that remains permanently open once it has tripped, regardless of any power cycle or reset procedure. The failed limiter must be physically replaced and the cause of the overheating must be resolved before the error will clear.