Whirlpool Cooktop Error Code F-42 E-00

F-42 E-00 is a power supply error code indicating a Type 2 failure detected by the power control board. The board has identified a problem with the power it is receiving or distributing internally. This causes the cooktop to stop operating until the fault is diagnosed and corrected. The first step is to verify that the unit is receiving a proper 240 volts AC at the main incoming power connection.

No, you should not attempt to use the cooktop while this error code is active. The fault indicates a power supply problem that the control board has flagged as a reason to shut down operation. Continuing to use the appliance before the issue is resolved could risk damage to the control board, wiring, or other components, and may present an electrical hazard.

Repair costs depend heavily on the root cause. If the issue is simply a tripped breaker or a loose terminal connection, there may be little to no parts cost involved, though a service call fee typically applies. If the power control board requires replacement, parts and labor combined can range from around $150 to $400 or more depending on the specific model and local labor rates. Getting a diagnostic estimate from a technician before committing to the repair is advisable.

Some causes of this error, such as a tripped circuit breaker or a loose connection at the terminal block, can be addressed by a knowledgeable homeowner comfortable working around electrical systems. However, verifying voltage at the power supply connection and inspecting internal wiring and control board components involves working with 240-volt circuits, which carries serious safety risks. If you are not experienced with high-voltage appliance repair, having a qualified technician perform the diagnosis is strongly recommended.

Resetting the cooktop by turning off the circuit breaker for one to two minutes and restoring power may temporarily clear the code if the fault was caused by a transient power fluctuation. However, if an underlying issue exists, such as a failing control board, damaged wiring, or a weak circuit breaker, the error will return. A reset alone is not a repair and should be followed by proper diagnosis.