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Error code reference

Samsung Air Conditioner Error Code OUTDOOR_YELLOW_FLICKER_GREEN_ON

OPTION error (EEPROM)

Samsung codesSamsung air conditioner codes

OPTION error (EEPROM)

First step from the service manual

Check PCB option code

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

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What OUTDOOR_YELLOW_FLICKER_GREEN_ON means on a Samsung air conditioner

The OUTDOOR_YELLOW_FLICKER_GREEN_ON error on a Samsung air conditioner indicates an OPTION error related to the EEPROM on the outdoor unit PCB. The EEPROM (Electrically Erasable Programmable Read-Only Memory) is a small memory chip on the outdoor unit's printed circuit board that stores critical configuration data, including the option code that tells the control board what type of unit it is, what features are enabled, and how it should operate. When the controller cannot properly read or validate this option code, it signals a fault using the yellow flickering and green solid LED pattern on the outdoor unit.

The option code stored in the EEPROM is essentially the unit's identity and configuration profile. If this data becomes corrupted, is improperly written, or if the EEPROM chip itself fails, the outdoor unit cannot confirm its own operational parameters. This can happen after a power surge, voltage fluctuation, or following a PCB replacement where the new board has not been programmed with the correct option code for the specific model and system configuration.

The first diagnostic step is to check the PCB option code, which involves inspecting the outdoor unit's control board to confirm the correct code is set. In some cases, the option code can be re-entered or reprogrammed through the board's configuration process. If the EEPROM chip has physically failed or the PCB is otherwise damaged, replacement of the outdoor unit PCB will be necessary to resolve the fault.

Source: manufacturer service documentation.

Common causes of OUTDOOR_YELLOW_FLICKER_GREEN_ON

  1. 01

    Corrupted EEPROM option code

    Wiring / connection

    The option code stored in the EEPROM chip on the outdoor PCB has become corrupted, often due to a power surge or voltage spike. The board cannot read a valid configuration and triggers the fault.

  2. 02

    Incorrectly programmed replacement PCB

    Wiring / connection

    If the outdoor unit PCB was recently replaced, the new board may not have been programmed with the correct option code for this specific model. The option code must match the unit's configuration exactly.

  3. 03

    Failed EEPROM chip

    Part replacement

    The EEPROM chip itself may have physically failed and can no longer retain or provide stored data. This typically requires replacement of the outdoor unit PCB.

  4. 04

    Outdoor unit PCB failure

    Part replacement

    Broader failure of the outdoor unit printed circuit board can prevent the controller from reading the EEPROM correctly even if the chip is intact. Burn marks, damaged traces, or failed components on the board may be visible on inspection.

See the test procedure for each cause

Frequently asked questions about OUTDOOR_YELLOW_FLICKER_GREEN_ON

What does OUTDOOR_YELLOW_FLICKER_GREEN_ON mean on a Samsung air conditioner?
This LED pattern indicates an OPTION error related to the EEPROM on the outdoor unit's control board. The EEPROM stores configuration and option code data that the unit needs to operate correctly. When this data is missing, corrupted, or unreadable, the outdoor unit triggers this specific fault. A technician should check and verify the PCB option code as the first step in diagnosing this error.
Can I fix the OUTDOOR_YELLOW_FLICKER_GREEN_ON error myself?
This error requires accessing and evaluating the outdoor unit PCB, which involves working with electrical components inside the outdoor unit. DIY repair is not recommended unless you have experience with HVAC electronics and understand the risks of working near capacitors and high-voltage components. A qualified technician can check the option code and determine whether reprogramming or board replacement is needed.
Is it safe to run my Samsung air conditioner while this error is active?
The outdoor unit is unlikely to operate normally while this EEPROM option error is active, as the control board cannot confirm its own configuration. Attempting to run the system in this state is not recommended and could potentially cause additional issues. The unit should be inspected and repaired before returning to normal operation.
Will resetting the air conditioner clear this error?
A simple power reset is unlikely to permanently clear this error if the underlying EEPROM data is corrupted or missing, since the fault condition will persist as long as the option code cannot be read correctly. A reset may temporarily clear the displayed fault, but the error will return when the unit powers back up and fails to validate its configuration. The root cause on the PCB must be addressed to fully resolve the fault.
How much does it cost to repair the OUTDOOR_YELLOW_FLICKER_GREEN_ON error on a Samsung air conditioner?
Repair costs vary depending on whether the fix requires only reprogramming the option code or a full outdoor unit PCB replacement. Labor for diagnosis and reprogramming is generally less expensive, while PCB replacement including parts and labor can range from a few hundred dollars to over five hundred dollars depending on the model and local service rates. Getting a diagnostic quote from a certified Samsung technician is the best way to determine the actual cost for your specific unit.

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