Sharp Microwave Error Code EE17

EE17 indicates that the magnetron thermistor in the upper magnetron area has detected an overtemperature condition. The microwave shuts down automatically to protect the magnetron and prevent a potential fire hazard. The most frequent causes are a blocked air duct, a failing blower motor, or a defective thermistor. The unit will not resume operation until the underlying cause is addressed.

No. The microwave has disabled itself specifically because the magnetron is overheating, and attempting to bypass or ignore this error could result in permanent magnetron damage or a fire. Do not attempt to force the unit to operate until the cause of the overtemperature condition has been identified and corrected.

Repair costs vary depending on which component has failed. Cleaning a blocked vent or duct costs little beyond the time involved. Blower motor replacement parts typically range from around 30 to 80 dollars, while a magnetron thermistor is generally a lower-cost component. If the magnetron itself requires replacement, parts and labor combined can range from 150 to 300 dollars or more, at which point comparing the repair cost to the unit's value is worthwhile.

Some causes of EE17, such as a clogged air intake or blocked vent duct, can be cleared without special tools or parts. However, testing and replacing the blower motor, magnetron thermistor, or magnetron itself involves working near high-voltage components that retain a dangerous charge even after the unit is unplugged. Those repairs are best handled by a qualified technician unless you have specific experience discharging capacitors and working with microwave high-voltage circuits.

Unplugging the microwave for several minutes may allow it to restart if the magnetron has cooled down, but EE17 will return quickly if the underlying problem has not been fixed. A reset is useful for confirming whether the error is intermittent or persistent, but it is not a repair. Repeated overtemperature events can shorten magnetron life significantly.