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Error code reference

Electrolux Air Conditioner Error Code H6

Indoor fan motor locked/blocked protection

Electrolux codesElectrolux air conditioner codes

Indoor fan motor locked/blocked protection – DC motor feedback failure or motor stalling.

First step from the service manual

Check PG motor feedback terminal connection; verify blade rotates freely; measure output voltage on motor control terminal.

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

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What H6 means on a Electrolux air conditioner

The H6 error code on an Electrolux air conditioner indicates indoor fan motor locked or blocked protection, triggered when the control board detects a failure in the DC motor feedback signal or a motor stall condition. The indoor fan uses a DC brushless motor with a PG (pulse generator) feedback circuit that continuously reports rotor speed back to the main control board. When the board does not receive the expected feedback pulses within a defined window, or detects that the motor has stopped rotating under power, it activates the H6 protection to prevent overheating or damage to the motor windings and driver circuitry.

The most direct causes fall into two categories: mechanical obstruction and electrical signal failure. On the mechanical side, debris such as dust accumulation, foreign objects lodged in the fan scroll, or a seized bearing can physically stall the fan blade. On the electrical side, a loose or corroded connection at the PG feedback terminal on the motor harness will break the signal path to the control board, producing the same locked-motor fault even when the motor itself is mechanically sound.

Diagnosis begins by inspecting the PG motor feedback terminal connection and confirming that the fan blade spins freely by hand with no resistance or grinding. The output voltage on the motor control terminal should then be measured to distinguish between a failed motor drive signal and a motor that is receiving correct voltage but failing to respond. If control voltage is present but the motor does not spin and the blade is unobstructed, motor replacement is typically required.

Source: manufacturer service documentation.

Common causes of H6

  1. 01

    Loose or faulty PG feedback terminal connection

    Wiring / connection

    The PG signal wire that reports motor speed to the control board can work loose or corrode at the connector, causing the board to read a stall condition even if the motor is otherwise functional. Inspect and reseat the feedback harness connector at both the motor and board ends.

  2. 02

    Fan blade obstruction or debris

    Wiring / connection

    Accumulated dust, ice buildup, or a foreign object caught in the fan scroll can physically block the blade from rotating, triggering stall protection. Remove the front panel and manually check that the blade spins freely with no resistance.

  3. 03

    Failed DC indoor fan motor

    Part replacement

    A motor with worn bearings or failed internal windings will stall under load or fail to generate proper PG feedback pulses even when control voltage is correctly applied. If voltage is present at the motor control terminal but the blade does not spin freely and unobstructed, the motor itself has failed and must be replaced.

  4. 04

    Faulty motor control output from main control board

    Part replacement

    If the control board is not supplying the correct output voltage to the motor control terminal, the motor will not receive the drive signal needed to start. Measuring the voltage at the motor control terminal will confirm whether the board is sending a proper signal.

  5. 05

    Seized fan motor bearing

    Part replacement

    A bearing that has seized due to lack of lubrication or age will prevent the rotor from turning even when the electrical connections are intact. This is identifiable by stiff or grinding resistance when the blade is rotated by hand.

See the test procedure for each cause

Frequently asked questions about H6

What does H6 mean on a Electrolux air_conditioner?
H6 is an indoor fan motor locked or blocked protection code. It activates when the control board detects that the DC fan motor has stalled or is not returning the expected PG feedback signal. The unit shuts down to protect the motor and driver circuitry from damage. The fault must be diagnosed and resolved before the unit will resume normal operation.
Can I fix the H6 error myself, or do I need a technician?
Some H6 causes are DIY-accessible, such as clearing a physical obstruction from the fan blade or reseating a loose PG feedback connector. However, testing the motor control terminal output voltage and replacing the motor or control board require electrical knowledge and appropriate tools. If basic checks do not resolve the fault, a qualified technician should complete the diagnosis.
Is it safe to keep running my Electrolux air conditioner while the H6 code is showing?
No. The H6 code means the indoor fan is not operating correctly, which prevents proper airflow across the evaporator coil. Continuing to run the unit in this condition risks ice formation on the coil, compressor damage from liquid refrigerant, and potential overheating of the motor driver components. The unit should remain off until the fault is resolved.
How much does it cost to repair an H6 error on an Electrolux air conditioner?
Repair costs vary depending on the root cause. A simple connection repair or cleaning may cost between $75 and $150 in labor. Replacing the indoor DC fan motor typically runs between $150 and $350 including parts and labor. If the main control board requires replacement, costs can range from $200 to $500 or more depending on the model.
Will resetting the unit clear the H6 error code?
A power reset may temporarily clear the H6 code and allow the unit to attempt a restart, but the fault will return if the underlying problem has not been corrected. If the motor is stalled due to a physical obstruction or a failed bearing, resetting without addressing the cause can cause further damage. Resetting is useful as a first step only after verifying that the fan blade spins freely and all connectors are secure.

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