Electrolux Cooktop Error Code E77

E77 indicates a break detected in the heat sink temperature sensor circuit within the 3-cook-zone induction module for the center cooking zone. Because the cooktop cannot read a valid temperature signal from the center zone electronics, it disables that zone as a safety precaution. Resolving this fault requires inspection and most likely replacement of the generator circuit board for the center cook zone.

Resetting the cooktop by cutting power at the breaker or unplugging it may temporarily clear the display, but E77 will return as soon as the center zone is used again because the underlying sensor circuit fault remains. A reset does not repair a broken sensor or damaged circuit board. The fault requires a physical repair to resolve permanently.

Repair costs vary depending on parts pricing and local labor rates, but a generator circuit board replacement for an induction cooktop typically falls in the range of $150 to $400 or more, including parts and labor. Obtaining a quote from an authorized service provider before proceeding is recommended, as part costs for induction modules can be significant.

The primary fix for E77 is replacing the generator circuit board inside the induction module, which involves disassembling the cooktop and working near high-voltage components. This repair is best handled by a qualified appliance technician. A knowledgeable DIYer comfortable with appliance electronics could attempt it, but safety precautions including unplugging the unit and discharging any capacitors must be strictly followed.

The center cooking zone should not be used while E77 is active, as the thermal protection for that zone is not functioning. Other zones on the cooktop may continue to operate normally, but using the center zone without working temperature monitoring risks overheating the internal electronics. It is advisable to have the unit repaired before resuming use of the center zone.