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Error code reference

KitchenAid Range Error Code F5-E3

Loss of 120 VAC across L1 to ground, or Q19 circuit error (non-polarized receptacle).

KitchenAid codesKitchenAid range codes

Loss of 120 VAC across L1 to ground, or Q19 circuit error (non-polarized receptacle).

First step from the service manual

Suspect input switch; check electrical connection and receptacle polarity.

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

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What F5-E3 means on a KitchenAid range

F5-E3 on a KitchenAid range indicates the control board has detected a loss of 120 VAC on the L1 leg relative to ground, or has identified a Q19 circuit error caused by a reversed L1-to-neutral (L1-N) polarity condition. The control board monitors incoming line voltage continuously, and when it detects that L1 is absent or that the hot and neutral legs are swapped at the receptacle, it throws this fault to prevent unsafe operation. The Q19 transistor circuit is part of the board's voltage sensing path, so a reversed polarity condition can mimic or trigger the same fault signature as a dropped L1 leg.

For homeowners, this error essentially means your range is detecting a problem with the electrical supply coming into the unit. Either the outlet the range is plugged into is wired incorrectly (hot and neutral reversed), or something has interrupted the hot leg of power the range depends on. This is not a problem caused by normal use of the range. It originates at the wall receptacle, the home wiring, or the range's internal power input components. Checking the receptacle for proper polarity is the right first step before assuming any internal part has failed.

Source: manufacturer service documentation.

Common causes of F5-E3

  1. 01

    Improperly polarized wall receptacle (L1-N reversal)

    Wiring / connection

    If the hot and neutral wires are swapped at the wall outlet or terminal block, the control board's Q19 circuit detects the reversal and triggers F5-E3. A simple receptacle polarity test with a multimeter or outlet tester will confirm this condition.

  2. 02

    Loss of L1 voltage at the range receptacle or terminal block

    Wiring / connection

    A tripped breaker, a blown fuse on the L1 leg, or a loose connection at the wall receptacle can cause L1 voltage to drop to zero relative to ground. The control board reads this as a supply fault and displays F5-E3.

  3. 03

    Damaged or loose wiring between the receptacle and the control board

    Part replacement

    Internal wiring or the range's power cord may have a broken connection or damaged insulation on the L1 line, preventing proper voltage from reaching the board's sensing circuit. Inspecting the power cord and internal harness connections for damage or corrosion is necessary.

  4. 04

    Failed Q19 circuit on the control board

    Part replacement

    If the receptacle polarity is correct and L1 voltage is confirmed present and stable, the Q19 sensing transistor or surrounding circuitry on the control board itself may have failed, causing a false F5-E3 fault. This is the least likely cause and should only be suspected after all supply-side issues are ruled out.

See the test procedure for each cause

Frequently asked questions about F5-E3

What does error code F5-E3 mean on a KitchenAid range?
F5-E3 means the control board has detected either a loss of 120 VAC on the L1 line relative to ground, or a reversed polarity condition between L1 and neutral, identified through the Q19 sensing circuit. The fault points to the electrical supply coming into the range, not to a cooking component like a burner or oven element. Start by testing the wall receptacle with an outlet polarity tester or multimeter before inspecting anything inside the range.
How do I fix F5-E3 on a KitchenAid range?
Begin by checking that the wall receptacle supplying the range is properly polarized, meaning the hot wire is connected to the hot terminal and neutral to the neutral terminal. Use an outlet tester or a multimeter to verify polarity and confirm L1 voltage is present. If the outlet tests correctly, inspect the range's power cord and internal wiring harness for damaged or loose connections. If all supply-side checks pass and F5-E3 persists, the control board's Q19 circuit may have failed and the board will need replacement.
Is it safe to use my KitchenAid range while F5-E3 is displayed?
No, operating the range with F5-E3 active is not advisable. This code indicates a potential wiring polarity reversal or a missing hot leg of power, both of which are electrical safety concerns. A reversed L1-N condition can create shock hazards and may damage the control board or other components. Resolve the supply-side wiring issue before resuming use.
How much does it cost to fix the F5-E3 error on a KitchenAid range?
If the cause is a miswired receptacle, an electrician typically charges between $75 and $150 to correct the wiring, and no parts are needed. If the power cord is damaged, a replacement cord runs $20 to $60 in parts and is a manageable DIY repair. A failed control board is the most expensive scenario, with boards for KitchenAid ranges generally costing $150 to $350 in parts, plus labor if a technician installs it.
Can a tripped breaker cause F5-E3 on a KitchenAid range?
Yes. If the circuit breaker controlling the L1 leg of the range's supply has partially tripped or if one leg of a double-pole breaker has failed, the range can lose 120 VAC on L1 while still receiving partial power. This is enough to trigger F5-E3. Check the breaker panel and confirm both poles of the range's dedicated breaker are fully reset and supplying correct voltage before inspecting the range itself.

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