mypros+
Error code reference

KitchenAid Range Error Code F4E7

Over temperature in oven cavity 2 (temperature runaway error).

KitchenAid codesKitchenAid range codes

Over temperature in oven cavity 2 (temperature runaway error).

First step from the service manual

Enter diagnostics mode and press BAKE key to cycle bake relay on and off; verify relay and gas valve operation.

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

MyPros+ Max

Get the full diagnostic procedure for F4E7.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What F4E7 means on a KitchenAid range

F4E7 indicates an over-temperature condition in oven cavity 2, specifically classified as a temperature runaway error. This means the control board has detected that the second oven cavity is exceeding its safe operating temperature threshold and is not responding correctly to control signals intended to regulate heat. A runaway condition occurs when the heating system continues to produce heat beyond the setpoint without shutting down as commanded, which represents both a functional failure and a potential safety concern.

On a gas range, the primary components involved in this fault are the bake relay on the control board and the gas valve that feeds burner 2. The control board cycles the bake relay to open and close the gas valve and regulate oven temperature. If the relay welds shut in the closed position, the gas valve may remain energized continuously, causing unchecked temperature rise. Conversely, a faulty gas valve that does not close properly when de-energized can produce the same runaway symptom. The oven temperature sensor (RTD or thermistor) feeding cavity 2 data back to the control board is also a critical component in this loop.

Diagnostic procedure begins in the range's service diagnostics mode by pressing the BAKE key to manually cycle the bake relay on and off. A technician should listen and test for proper gas valve response as the relay toggles, and verify that the relay itself is switching cleanly without sticking. If the relay cycles correctly but the gas valve fails to open or close in response, the valve is suspect. If the relay fails to switch, the control board requires evaluation or replacement.

Source: manufacturer service documentation.

Common causes of F4E7

  1. 01

    Welded or stuck bake relay on control board

    Part replacement

    The bake relay can fuse in the closed position due to electrical arcing, causing the gas valve to remain continuously energized. Cycling the relay in diagnostics mode with no switching response confirms this failure.

  2. 02

    Faulty gas valve that does not close on command

    Part replacement

    If the gas valve fails to de-energize and shut off gas flow when the relay opens, temperature will continue to climb uncontrolled. Verify gas valve response during the diagnostics bake relay cycle test.

  3. 03

    Defective oven temperature sensor for cavity 2

    Part replacement

    A failed RTD or thermistor in cavity 2 can report inaccurate temperature readings to the control board, causing the board to misread conditions and either fail to cut heat or incorrectly interpret a runaway event. Check sensor resistance against specifications for the cavity 2 probe.

  4. 04

    Control board failure

    Part replacement

    If the relay and gas valve both test correctly but the error persists, the control board itself may have a failed driver circuit that cannot properly command the relay. This is typically diagnosed after ruling out the relay and valve as individual components.

See the test procedure for each cause

Frequently asked questions about F4E7

What does F4E7 mean on a KitchenAid range?
F4E7 means the control board detected an over-temperature or temperature runaway condition specifically in oven cavity 2. The oven exceeded its safe temperature threshold and did not respond to commands to reduce or stop heating. This error points to a fault in the bake relay, the gas valve, or the temperature sensing circuit for cavity 2.
Can I fix F4E7 myself or do I need a technician?
Diagnosing and repairing F4E7 involves working with gas valve components and control board relays, which requires entering a service diagnostics mode and testing component response under power. While a knowledgeable DIYer can perform resistance checks on the temperature sensor, replacing a gas valve or control board on a gas range is best handled by a qualified appliance technician. Improperly serviced gas components carry serious safety risks.
Is it safe to use my KitchenAid range when F4E7 is displayed?
No. A temperature runaway error means the oven may not be able to stop heating itself when commanded, which is a fire and safety hazard. You should discontinue use of oven cavity 2 immediately and not operate it again until the underlying cause has been diagnosed and repaired.
Will resetting the range clear the F4E7 error code?
A power reset may temporarily clear the error code from the display, but it will not fix the underlying mechanical or electrical fault. If the bake relay is welded shut or the gas valve is not operating correctly, the condition will return and the oven will remain unsafe to use. The root cause must be repaired, not just the error dismissed.
How much does it cost to repair a KitchenAid range showing F4E7?
Repair costs depend on which component has failed. A replacement oven temperature sensor is typically in the range of $20 to $60 for the part. A gas valve replacement can run $80 to $200 or more for the part alone. Control board replacement tends to be the most expensive path, with parts ranging from $150 to $400 depending on the model. Labor costs from a technician will add to any of these estimates.

Related KitchenAid range codes

All KitchenAid range codes
View all 79 KitchenAid range codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass