Electrolux Washer Error Code E66

E66 indicates a heating element defect caused by an incongruence between the antiboil pressure switches and the heating relay circuit. The fault can point to a failed heating element, a broken wiring cable, or a defective antiboil pressure switch. The washer uses this code to signal that the heating circuit is not behaving as expected, so it stops heating to protect the machine and laundry.

It is not recommended to continue running the washer while E66 is active. The fault indicates the heating circuit is not working correctly, and continuing to operate the machine could cause further damage to wiring or the control board. Most machines will also fail to complete wash programs that require water heating, so the wash results will be compromised.

A power reset may temporarily clear the E66 code from the display, but the fault will return as soon as the washer attempts to heat water again if the underlying problem has not been fixed. The incongruence between the antiboil switches and the heating relay is a hardware fault that requires physical inspection and component replacement, not just a reset.

A knowledgeable DIYer with multimeter skills can test the heating element for continuity and inspect the wiring harness for visible damage. If the element is open-circuit or a cable is clearly broken, those parts can be replaced at home. However, testing and replacing the antiboil pressure switch or diagnosing a control board relay fault typically requires more appliance repair experience, so a technician visit may be warranted for those steps.

Repair costs depend on which component has failed. A replacement heating element typically runs in the range of $30 to $80 for parts, while an antiboil pressure switch generally costs $15 to $50. Adding professional labor, the total repair cost usually falls between $100 and $250, though costs can be higher if the control board relay is also involved.