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Error code reference

Samsung Air Conditioner Error Code E162

EEPROM error

Samsung codesSamsung air conditioner codes

EEPROM error - defective EEPROM part or circuit, communication failure between EEPROM and MICOM.

First step from the service manual

Check for short or dewetting between EEPROM pins; re-enter model options and power reset.

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

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What E162 means on a Samsung air conditioner

The E162 error code on a Samsung air conditioner indicates an EEPROM (Electrically Erasable Programmable Read-Only Memory) fault. The EEPROM is a small memory chip on the indoor unit's control board that stores critical configuration data including model-specific operating parameters, refrigerant settings, and factory calibration values. When the MICOM (microcomputer controller) cannot successfully communicate with or read data from the EEPROM, it triggers this error and halts normal operation to prevent incorrect or undefined behavior.

The fault can originate from two distinct failure modes. The first is a hardware defect, where the EEPROM chip itself has failed or the surrounding circuit has developed a short circuit or dewetting between the EEPROM pins. Dewetting refers to solder joint degradation where the solder pulls away from the pad, creating an intermittent or open connection. The second failure mode is a data corruption event, where the EEPROM chip is physically intact but contains invalid or erased model configuration data, often recoverable by re-entering the model options through the service menu followed by a full power reset.

Diagnosing this error begins with a close visual and electrical inspection of the EEPROM and its solder joints on the control PCB. Technicians should check for bridged pins, cold solder joints, corrosion, and continuity along the communication lines between the EEPROM and MICOM. If the solder joints appear sound and re-entering model options does not resolve the fault, the EEPROM chip or the entire control board is likely defective and will require replacement.

Source: manufacturer service documentation.

Common causes of E162

  1. 01

    Dewetting or cold solder joints on EEPROM pins

    Wiring / connection

    Solder joints connecting the EEPROM chip to the PCB can degrade over time, pulling away from the pad and creating a broken or intermittent connection. Inspect the EEPROM pin solder joints under magnification for any that appear dull, cracked, or separated from the board.

  2. 02

    Short circuit between EEPROM pins

    Wiring / connection

    A conductive bridge between adjacent EEPROM pins, caused by solder bridging, corrosion, or debris, can disrupt communication between the EEPROM and MICOM. Visually inspect the chip under magnification and check continuity between adjacent pins to identify a short.

  3. 03

    Corrupted or erased EEPROM data

    Wiring / connection

    The EEPROM chip may be physically intact but contain invalid model configuration data due to a power surge or failed write operation. Re-entering the model options through the service menu and performing a full power reset can restore normal operation in this case.

  4. 04

    Failed EEPROM chip

    Part replacement

    The EEPROM component itself may have reached end of life or been damaged by voltage irregularities, making it unable to retain or transmit data. If inspection and reprogramming steps do not resolve the error, chip-level failure should be suspected and the control board will need replacement.

  5. 05

    Defective indoor unit control PCB

    Part replacement

    If the EEPROM and its solder joints appear intact but the error persists after reprogramming, damage to the communication circuit between the EEPROM and MICOM on the control board may be the root cause. Replacing the control PCB is the resolution in this scenario.

See the test procedure for each cause

Frequently asked questions about E162

What does E162 mean on a Samsung air conditioner?
E162 indicates an EEPROM error, meaning the main microcomputer (MICOM) on the indoor unit control board cannot properly communicate with the EEPROM memory chip. This chip stores model configuration and calibration data essential for correct operation. The fault can be caused by a defective EEPROM chip, degraded solder joints on its pins, a short circuit between pins, or corrupted data stored in the chip.
Can I fix the E162 error myself without a technician?
A basic first step any user can safely attempt is a full power reset by switching off the circuit breaker for the unit, waiting at least one minute, and restoring power. If the error returns, re-entering the model options through the service menu may resolve a data corruption issue, but this step typically requires familiarity with Samsung's service menu procedures. Any inspection or repair of the control board solder joints or components should be performed by a qualified technician.
Will resetting the air conditioner clear the E162 error?
A power reset may temporarily clear the error or resolve it entirely if the root cause was a data corruption issue in the EEPROM. However, if the EEPROM chip or its circuit connections are physically defective, the error will return after the reset. Re-entering model options through the service menu combined with a power reset offers the best chance of clearing the code without part replacement.
Is it safe to continue using the air conditioner when E162 is displayed?
When E162 is active, the unit has detected a fault in its configuration memory and will typically not operate normally or at all. Attempting to force operation without resolving the underlying fault is not recommended, as the unit may behave unpredictably without access to its stored operating parameters. The system should remain off until the error is diagnosed and resolved.
How much does it cost to repair a Samsung air conditioner showing E162?
Repair costs depend on the root cause. If the issue is resolved through reprogramming or a solder joint rework, labor costs are typically in the range of $75 to $150. If the EEPROM chip requires replacement and a technician can perform component-level repair, costs may range from $100 to $200. Full control board replacement, which is the most common outcome for a failed EEPROM, typically costs between $150 and $400 including parts and labor, depending on the specific model and local rates.

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