Whirlpool Cooktop Error Code F-43

F-43 indicates an under-voltage condition on the induction cooktop, categorized as a Type 2 failure. The cooktop's control board has detected that incoming AC voltage has dropped below 196 volts, which is the minimum required for safe induction operation. The unit shuts down automatically to protect internal components from damage caused by insufficient voltage.

No, you should not attempt to bypass or ignore the F-43 error. The cooktop has disabled itself because operating under low voltage can damage the induction inverter circuits and other internal components. Continued use under low-voltage conditions could result in component failure or create a safety hazard.

Repair costs vary depending on the root cause. If the problem is a loose wiring connection or a tripped breaker, costs may be minimal. If a licensed electrician is needed to address a supply voltage issue, expect to pay in the range of $100 to $300 or more depending on the work involved. If the cooktop's control board requires replacement, parts and labor combined typically range from $200 to $500 or higher depending on the specific model.

Some causes of F-43 are DIY-friendly. Start by disconnecting power and using a multimeter to measure the AC voltage at the supply. If the voltage reads below 196 volts, the problem is in your home's electrical supply and may require an electrician. If voltage is adequate and the error keeps returning, a faulty control board is likely involved, which typically requires a technician to replace.

Unplugging the cooktop or disconnecting the circuit breaker will reset the control board, and the error may temporarily clear. However, if the underlying voltage problem has not been resolved, the F-43 code will return as soon as the unit detects low voltage again. A reset alone is not a fix, it is only a starting point for diagnosis.