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Error code reference

Electrolux Air Conditioner Error Code LC

Compressor failure start-up (start-up failure).

Electrolux codesElectrolux air conditioner codes

Compressor failure start-up (start-up failure).

First step from the service manual

Verify compressor wiring is correct and connection sequence is proper; ensure compressor stop time exceeds 3 minutes before restart.

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

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What LC means on a Electrolux air conditioner

The LC error code on an Electrolux air conditioner indicates a compressor start-up failure. This means the unit attempted to start the compressor but the compressor did not successfully reach operating speed or status within the expected timeframe. The compressor is the core refrigerant-pressurizing component in the sealed refrigeration circuit, and a failure to start properly triggers this code as a protective shutdown to prevent motor burnout or electrical damage.

The most frequent cause of this fault is a restart attempt made too soon after the previous shutdown. Compressors require a minimum off time, typically exceeding 3 minutes, to allow refrigerant pressure to equalize across the high and low sides of the system. Attempting a restart before pressure equalizes places extreme mechanical load on the compressor motor at start-up, which the control board detects as a failure condition. Incorrect wiring at the compressor terminals, including improper phase sequence or loose connections, can also prevent successful start-up and trigger this code.

Additional causes include a failed compressor capacitor (on single-phase units), an internally seized or weakened compressor motor, or supply voltage outside the acceptable operating range. Diagnosing the root cause requires confirming proper wiring and connection sequence at the compressor terminals, verifying that the minimum stop time has been observed, and checking supply voltage stability before suspecting internal compressor failure.

Source: manufacturer service documentation.

Common causes of LC

  1. 01

    Insufficient compressor stop time before restart

    Wiring / connection

    If the unit is restarted less than 3 minutes after shutting off, refrigerant pressure has not had time to equalize, causing excessive load on the compressor motor at start-up. Allow the unit to remain off for at least 3 minutes and retry.

  2. 02

    Incorrect compressor wiring or connection sequence

    Wiring / connection

    Improperly connected compressor terminals or incorrect phase sequencing can prevent the motor from starting correctly. Inspect all wiring connections at the compressor for proper seating, correct terminal assignment, and secure contact.

  3. 03

    Faulty or weak compressor start capacitor

    Part replacement

    On single-phase units, a failing start capacitor reduces the torque available to the compressor motor during start-up, which can cause a failure-to-start condition. A capacitor showing low or no capacitance on a meter indicates it needs replacement.

  4. 04

    Supply voltage out of acceptable range

    Wiring / connection

    Low or unstable supply voltage reduces available starting torque for the compressor motor and can cause repeated start-up failures. Measure the incoming voltage at the unit with a multimeter to confirm it falls within the rated operating range.

  5. 05

    Seized or internally failed compressor

    Part replacement

    An internally worn or seized compressor motor will fail to turn even under correct electrical conditions, triggering the LC code. This is confirmed when wiring, capacitor, voltage, and restart timing are all verified correct but the fault persists.

See the test procedure for each cause

Frequently asked questions about LC

What does LC mean on a Electrolux air_conditioner?
LC on an Electrolux air conditioner means the unit experienced a compressor start-up failure. The control board attempted to start the compressor but detected that it did not begin operating successfully. This is a protective fault designed to prevent damage to the compressor motor and associated components.
Can I fix the LC error on my Electrolux air conditioner myself?
In many cases, the first step is something you can do without tools: turn the unit completely off and wait at least 3 minutes before restarting. This allows refrigerant pressure to equalize and gives the compressor the conditions it needs for a successful start. If the error returns after a proper restart attempt, further diagnosis involving wiring checks, capacitor testing, or voltage measurement is needed, which may require a qualified technician.
Is it safe to keep using my air conditioner when the LC code appears?
The unit will not operate normally while the LC fault is active, as the compressor has shut down to protect itself. Continuing to attempt rapid restarts without resolving the underlying cause can stress and eventually damage the compressor motor. Address the fault before resuming regular use.
Will resetting the unit clear the LC error code?
A reset combined with a proper minimum stop time of over 3 minutes may clear the LC code if the cause was simply a premature restart attempt. However, if an underlying issue such as a bad capacitor, wiring fault, or failed compressor exists, the code will return after the next start-up attempt. A reset alone does not fix a hardware problem.
How much does it cost to repair an LC compressor fault on an Electrolux air conditioner?
Repair cost depends entirely on the root cause. A wiring correction or restart timing fix costs nothing beyond a service call fee, which typically ranges from $50 to $150. A replacement start capacitor usually adds $20 to $75 in parts. If the compressor itself has failed, replacement can range from $400 to $1,200 or more depending on unit size and part availability, and in some cases replacing the entire unit may be more economical.

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