Sharp Microwave Error Code EE1

EE1 on a Sharp microwave indicates that the high voltage monitoring circuit has detected an oscillation problem with the upper magnetron, identified as magnetron 1. The microwave shuts down cooking and stores this code when the magnetron fails to produce its expected output signal. This can result from a failed magnetron tube, a fault in the high voltage supply components, or a cooling failure caused by a malfunctioning blower fan motor. Diagnosis requires working through specific test procedures covering both the magnetron and the fan.

No, you should not attempt to use the microwave while it is displaying EE1. The code means the unit has detected a failure in the magnetron or its supporting circuits and has disabled itself for this reason. Attempting to force operation could worsen the fault or create a safety hazard. Leave the unit unplugged until it has been inspected and repaired.

Repair costs depend on which component has failed. A high voltage diode or capacitor replacement is generally the least expensive fix, typically in the range of $50 to $150 including parts and labor. Magnetron replacement is more costly, often ranging from $150 to $350 or more depending on the model and labor rates in your area. If the high voltage transformer has failed, costs can be similar to or exceed magnetron replacement. Getting a diagnostic quote from a technician before authorizing parts is advisable.

Repairing an EE1 error involves working near high voltage components that can store lethal charge in the capacitor even after the microwave is unplugged. The required diagnostic test procedures (A through J) are intended for trained technicians with proper equipment. Unless you have experience safely discharging microwave capacitors and testing high voltage circuits, this repair is best left to a qualified appliance technician.

Unplugging the microwave and restoring power may temporarily clear the displayed code, but the underlying fault that caused EE1 will remain. If the magnetron, high voltage components, or blower fan motor have failed, the error will return as soon as the unit attempts to operate. A reset is not a repair, and the root cause must be diagnosed and corrected before the microwave will function reliably.