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Error code reference

Electrolux Range Error Code 4,5,6

Max Unlock Attempts Exceeded (Motor Door Latch)

Max Unlock Attempts Exceeded (Motor Door Latch) - Door latch motor exceeded maximum unlock attempts.

First step from the service manual

Set the oven up for a clean cycle. Does the latch motor turn? No: Check the voltage applied to the latch motor. If line to neutral, replace latch mechanism. If zero, replace electronic control board. Yes: Check the phase and lock switches.

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

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What 4,5,6 means on a Electrolux range

Error codes 4, 5, and 6 on an Electrolux range all relate to a Max Unlock Attempts Exceeded condition for the motor-driven door latch system. This fault is triggered when the latch motor has attempted to unlock the oven door the maximum allowable number of times without successfully completing the unlock cycle. The door latch motor is a critical component of the self-clean system, responsible for mechanically securing and releasing the oven door during and after a high-temperature clean cycle. When the control board detects that the motor has reached its retry limit without confirming an unlocked state, it sets one of these fault codes to prevent further damage and alert the technician.

The door latch system relies on two key feedback components: the phase switch and the lock switch. These switches communicate the current position of the latch mechanism back to the electronic control board. If either switch fails to signal a successful unlock, the board commands the motor to retry. Repeated retries without confirmation exhaust the attempt limit and produce this fault. The issue may stem from a failed latch motor, a defective switch, or a lack of proper voltage reaching the motor circuit.

Diagnosis begins by initiating a clean cycle to observe whether the latch motor turns at all. If the motor does not move, voltage at the motor terminals must be checked. Line-to-neutral voltage present at the motor with no movement confirms a failed latch mechanism requiring replacement. Zero voltage at the motor points to the electronic control board as the source of the fault. If the motor does turn during the test but unlocking still fails, the phase and lock switches should be inspected for proper operation and continuity.

Source: manufacturer service documentation.

Common causes of 4,5,6

  1. 01

    Failed Latch Mechanism

    Part replacement

    The latch motor receives proper voltage but fails to move or complete the unlock cycle, indicating a mechanically or electrically failed latch assembly. This is confirmed when line-to-neutral voltage is present at the motor terminals but the motor does not turn.

  2. 02

    Faulty Phase or Lock Switch

    Part replacement

    If the latch motor turns but the control board never receives confirmation that the door has unlocked, one or both position switches (phase switch or lock switch) may be defective or misaligned. These switches provide the positional feedback that tells the board the latch has successfully moved.

  3. 03

    Defective Electronic Control Board

    Part replacement

    When the latch motor does not turn and voltage at the motor terminals reads zero, the electronic control board is not supplying power to the motor circuit. This points to a failed relay or control board output as the root cause.

  4. 04

    Mechanical Obstruction in Latch Assembly

    Wiring / connection

    Grease buildup, food debris, or deformation of the latch mechanism from repeated high-temperature clean cycles can prevent the motor from completing its travel, causing repeated failed attempts and triggering the fault code.

See the test procedure for each cause

Frequently asked questions about 4,5,6

What does 4,5,6 mean on a Electrolux range?
Error codes 4, 5, and 6 on an Electrolux range indicate that the door latch motor exceeded the maximum number of allowed unlock attempts. This fault is associated with the self-clean door locking system. The oven sets this code when the latch motor repeatedly tries and fails to unlock the door, prompting the control board to stop retrying and alert the user. The door may remain locked until the underlying cause is diagnosed and repaired.
Can I reset the error code 4,5,6 on my Electrolux range and will that fix it?
Resetting the control board by cutting power to the range may temporarily clear the fault code, but it will not fix the underlying mechanical or electrical problem. If the latch motor, position switches, or control board are faulty, the error will return as soon as another clean cycle is attempted. A proper repair requires diagnosing whether the motor, switches, or board are responsible for the failed unlock attempts.
Is it safe to use my Electrolux range when error codes 4,5,6 are displayed?
You should avoid running another self-clean cycle until this error is resolved, as the door latch system is not functioning correctly. If the oven door is currently locked due to this fault, do not force it open. Basic bake and broil functions may still operate, but continuing to use the self-clean feature with a faulty latch system could cause further component damage.
How do I diagnose error codes 4,5,6 on an Electrolux range?
Start by setting the oven up for a clean cycle and observing whether the latch motor turns. If it does not turn, check the voltage at the latch motor terminals. Line-to-neutral voltage with no motor movement means the latch mechanism needs to be replaced. Zero voltage at the motor terminals points to a failed electronic control board. If the motor does turn but the door still does not unlock, inspect the phase and lock switches for proper operation.
How much does it cost to repair error codes 4,5,6 on an Electrolux range?
Repair costs vary depending on which component has failed. Replacing the latch mechanism typically runs in the range of $100 to $250 for parts, while an electronic control board can cost between $150 and $400 or more depending on the model. Adding professional labor will increase the total cost. Getting a diagnostic service call before ordering parts is recommended to confirm which component is at fault.

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