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Error code reference

Samsung Air Conditioner Error Code E567

Inverter DC Link voltage 150V or less, 410V or more

Samsung codesSamsung air conditioner codes

Inverter DC Link voltage 150V or less, 410V or more

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  • Step-by-step tests with expected resistance, voltage, and continuity values
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  • Verified part numbers when replacement is required
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What E567 means on a Samsung air conditioner

Error code E567 on a Samsung air conditioner indicates that the inverter DC link voltage has fallen to 150 volts or below, or risen to 410 volts or above. The DC link is a critical intermediate stage in the inverter circuit, where rectified AC power is stored and regulated before being converted into variable-frequency AC power to drive the compressor motor. The inverter board continuously monitors this DC bus voltage, and when it falls outside the acceptable operating window, E567 is triggered to protect the compressor and power electronics from damage.

Low DC link voltage (150V or less) is typically caused by insufficient incoming AC supply voltage, a failing rectifier section on the inverter board, or degraded filter capacitors that can no longer hold a stable charge. High DC link voltage (410V or more) is often associated with power supply surges, overvoltage from the utility grid, or a malfunctioning power factor correction circuit that allows the DC bus to climb beyond safe limits. In both cases, the inverter shuts down compressor operation to prevent catastrophic component failure.

Diagnosing E567 requires measuring the incoming AC line voltage at the unit to rule out utility supply problems first. If line voltage is within normal range, the inverter board itself, including its rectifier diodes, filter capacitors, and PFC components, should be inspected and tested. A failed or weak capacitor bank is a particularly common cause of low DC link voltage readings, especially in older units.

Source: manufacturer service documentation.

Common causes of E567

  1. 01

    Low incoming AC supply voltage

    Wiring / connection

    If the utility voltage feeding the air conditioner is abnormally low, the inverter DC link cannot charge to a sufficient level. Check the supply voltage at the disconnect or breaker with a multimeter to confirm it is within the rated input range.

  2. 02

    Degraded or failed DC link filter capacitors

    Part replacement

    Electrolytic capacitors on the inverter board can lose capacitance over time, causing the DC bus voltage to sag under load and trigger the low-voltage threshold. Visually inspect capacitors for bulging or leakage, and test capacitance with an appropriate meter.

  3. 03

    Faulty inverter board rectifier circuit

    Part replacement

    The rectifier diodes or bridge rectifier on the inverter PCB convert incoming AC to DC. If one or more diodes have failed or are conducting poorly, DC link voltage will be insufficient. Testing each diode in the bridge for proper forward voltage drop can identify a failure.

  4. 04

    Utility power surge or overvoltage event

    Wiring / connection

    A voltage spike from the utility grid can push the DC link voltage above 410V, triggering the high-voltage threshold. If the error appeared after a storm or grid event and clears on restart, a surge protector or line conditioner should be considered.

  5. 05

    Malfunctioning power factor correction circuit

    Part replacement

    The PFC circuit on the inverter board regulates the DC bus voltage actively. A failed PFC controller, boost inductor, or switching transistor can cause uncontrolled DC bus voltage rise above the 410V limit. This fault generally requires inverter board replacement.

See the test procedure for each cause

Frequently asked questions about E567

What does E567 mean on a Samsung air conditioner?
E567 indicates that the inverter DC link voltage has gone out of its safe operating range, either dropping to 150 volts or below, or rising to 410 volts or above. The inverter circuit monitors this internal DC bus voltage to protect the compressor and power electronics. When the voltage falls outside the acceptable window, the system shuts down and displays E567. Both low and high voltage conditions can trigger this code.
Can I fix E567 on my Samsung air conditioner myself?
Some causes, such as low utility supply voltage or the aftereffects of a power surge, can be identified without disassembling the unit. However, diagnosing and repairing the inverter board components, including capacitors, rectifiers, and PFC circuits, involves working with high-voltage DC levels that can be lethal even after the unit is unpowered. This repair is best handled by a qualified technician with appropriate test equipment and safety training.
Is it safe to keep running my air conditioner with an E567 error?
No. E567 means the inverter has already detected an unsafe voltage condition and shut down compressor operation as a protective measure. Attempting to force the unit to operate with this fault active could cause permanent damage to the inverter board, compressor, or both. Leave the unit off until the root cause has been diagnosed and corrected.
Will resetting the air conditioner clear the E567 error?
A power reset may temporarily clear the error code if the underlying cause was a transient event such as a brief utility voltage sag or a single power surge. However, if the fault is caused by a failing component such as degraded capacitors or a faulty rectifier, the error will return quickly once the unit attempts to operate. A reset alone is not a fix and should not be relied upon as a solution.
How much does it cost to repair an E567 error on a Samsung air conditioner?
Repair costs vary depending on the root cause. If the fix involves replacing the inverter control board, parts and labor combined typically range from several hundred dollars to over a thousand dollars depending on the unit model and local labor rates. Capacitor-only repairs or external power corrections may fall on the lower end of that range. A diagnostic visit from a certified technician is the best way to get an accurate estimate for your specific situation.

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