Electrolux Range Error Code 77

Error code 77 indicates a heat sink temperature sensor break in the induction housing assembly on the right side of the range. The control has detected an open circuit in the sensor that monitors the power electronics heat sink for the right side cooking zones. This causes the right side induction burners to be disabled until the fault is resolved. The primary repair step is replacement of the right side generator circuit board.

When error 77 is active, the right side induction cooking zones are disabled by the control as a protective measure. The left side zones may remain operational depending on the range configuration. It is not recommended to attempt to bypass or ignore this fault, as the heat sink sensor protects the inverter electronics from thermal damage. Continue using the range only on unaffected zones if needed, and schedule a repair promptly.

Repair costs for error 77 typically depend on whether the generator circuit board, the thermistor, or both need replacement. Parts costs for an induction generator board generally range from around $150 to $400 or more depending on the specific model, and labor for a qualified technician adds to that total. If only a harness or connector issue is found, repair costs can be significantly lower. Getting a diagnosis from a certified technician will provide a more accurate estimate for your specific model.

Resolving error 77 requires disassembling the cooktop to access the induction housing assembly and the right side generator circuit board, which involves working near high-voltage capacitors and power electronics. This repair is best performed by a qualified appliance technician. A knowledgeable DIYer comfortable with appliance electronics can inspect harness connections and connectors as a first step, but board replacement requires proper handling precautions.

A power reset by turning off the circuit breaker for 30 seconds and restoring power may temporarily clear the error display, but code 77 will return if the underlying sensor circuit fault is still present. Because the error represents a detected open circuit in a hardware component, it cannot be permanently resolved through a reset alone. The faulty component must be repaired or replaced to clear the code for good.