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Error code reference

Whirlpool Cooktop Error Code F-43 E-00

Power supply error from the power control board (Type 2 failure).

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Power supply error from the power control board (Type 2 failure).

First step from the service manual

Check for 240 volts AC at the main incoming power supply connection.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What F-43 E-00 means on a Whirlpool cooktop

The F-43 E-00 error code on a Whirlpool cooktop indicates a power supply error originating from the power control board, classified internally as a Type 2 failure. The power control board is responsible for receiving, regulating, and distributing the incoming 240-volt AC supply to the cooktop's heating elements and control circuits. When the board detects that the power supply does not meet expected parameters, it logs this fault code and may disable some or all cooking functions to protect internal components.

A Type 2 power supply failure typically points to a problem at the point where line voltage enters the appliance or how that voltage is being processed by the control board. This can involve issues with the incoming circuit itself, the terminal block connections, or the control board's own ability to read and regulate incoming power. Because the cooktop requires a proper split-phase 240-volt supply with both hot legs functioning correctly, a failure in either leg can trigger this fault. Loose, corroded, or damaged wiring at the main connection point are common contributors.

The first diagnostic step is to verify that 240 volts AC is present at the main incoming power supply connection. If voltage is absent or significantly reduced on one or both legs, the problem lies upstream in the home's electrical circuit, such as a tripped breaker, a failed breaker leg, or a wiring fault at the junction box. If full voltage is confirmed at the terminal connection but the error persists, the power control board itself is the likely failed component and will require further testing or replacement.

Source: manufacturer service documentation.

Common causes of F-43 E-00

  1. 01

    Tripped or failed circuit breaker

    Wiring / connection

    A tripped double-pole breaker can drop voltage on one or both legs of the 240-volt supply, triggering this fault. Check the breaker panel for a tripped breaker and test for full 240 volts at the cooktop's supply connection.

  2. 02

    Loose or corroded terminal block connections

    Wiring / connection

    The main incoming power connection at the cooktop's terminal block can develop loose or corroded contacts over time, reducing voltage delivery to the control board. Inspect the terminal block for heat damage, discoloration, or loose wiring under the cooktop.

  3. 03

    Faulty or damaged supply wiring

    Part replacement

    Wiring between the junction box and the cooktop terminal block can become damaged, pinched, or burned, causing voltage drops that the power control board detects as a supply error. A visual inspection of the supply cable and continuity testing can identify this issue.

  4. 04

    Failed power control board

    Part replacement

    If 240 volts AC is confirmed at the main incoming connection and all wiring checks out, the power control board itself may have an internal failure in its power monitoring or regulation circuits. Replacing the power control board is typically required in this scenario.

  5. 05

    Degraded or failed circuit breaker

    Part replacement

    A breaker that has not tripped but is no longer delivering consistent voltage can cause intermittent or persistent power supply errors. An electrician can test the breaker under load to determine if it needs replacement.

See the test procedure for each cause

Frequently asked questions about F-43 E-00

What does F-43 E-00 mean on a Whirlpool cooktop?
F-43 E-00 is a power supply error code generated by the power control board, classified as a Type 2 failure. It means the control board has detected a problem with the incoming 240-volt AC power supply. This can point to issues with the home's circuit breaker, supply wiring, terminal block connections, or the control board itself. The cooktop may disable functions until the underlying power issue is corrected.
How do I fix the F-43 E-00 error on my Whirlpool cooktop?
Start by checking your home's circuit breaker panel for a tripped double-pole breaker and reset it if needed. Then verify that 240 volts AC is present at the cooktop's main incoming power connection using a multimeter. If voltage is correct at the terminal block, inspect all wiring and connections for damage or corrosion. If the wiring and power supply check out, the power control board may need to be replaced.
Is it safe to use my Whirlpool cooktop when the F-43 E-00 code is displayed?
You should not attempt to use the cooktop while this error code is active. A power supply error can indicate underlying electrical problems that pose a risk of damage to the appliance or, in cases involving wiring faults, a potential safety hazard. Disconnect the cooktop from power and address the electrical issue before resuming use.
Will resetting my Whirlpool cooktop clear the F-43 E-00 error?
Cutting power to the cooktop at the circuit breaker for a few minutes may temporarily clear the code, but if the underlying power supply issue has not been corrected, the error will return. A reset alone is not a repair. The root cause, whether it is a wiring problem, a weak breaker, or a failing control board, must be identified and fixed.
How much does it cost to repair a Whirlpool cooktop showing the F-43 E-00 error?
Repair costs vary depending on the cause. If the issue is a tripped or failed circuit breaker, electrician fees typically range from $75 to $250 or more depending on the work required. Wiring repairs can fall in a similar range. If the power control board needs replacement, parts and labor combined can range from $150 to $400 or higher depending on the specific model and local labor rates.

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