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Error code reference

Samsung Air Conditioner Error Code E467

Error due to unconnected wire of compressor 1.

Samsung codesSamsung air conditioner codes

Error due to unconnected wire of compressor 1.

First step from the service manual

Check compressor connection wire.

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

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What E467 means on a Samsung air conditioner

Error code E467 on a Samsung air conditioner indicates that the control board has detected an open or missing electrical connection on the wiring circuit for compressor 1. The system continuously monitors the integrity of the compressor wiring harness, and when the expected signal or continuity is absent, this fault is triggered. Compressor 1 refers to the primary compressor in the refrigerant circuit, which is responsible for pressurizing the refrigerant and enabling the cooling or heating cycle to function. Without a confirmed, secure wiring connection, the unit will not allow the compressor to operate, as doing so could result in damage to the compressor motor or associated components.

The most common cause of E467 is a physically disconnected, loose, or partially seated connector on the compressor wiring harness. Vibration during normal operation can gradually loosen connector pins over time, especially in outdoor units exposed to temperature cycling and moisture. Corroded or oxidized connector terminals can also create enough resistance in the circuit to register as an open connection, even when the wire appears physically attached. In some cases, a wire may have been accidentally disconnected during a previous service visit or during installation.

Diagnosis should begin at the compressor wiring harness connectors, tracing from the compressor terminals back to the control board. Technicians should inspect each connector for signs of corrosion, bent pins, or physical damage, and verify that all connectors are fully seated and locked. If the wiring and connectors check out, the compressor itself and the control board input circuit should be evaluated as potential failure points.

Source: manufacturer service documentation.

Common causes of E467

  1. 01

    Disconnected compressor wiring connector

    Wiring / connection

    The most frequent cause is a connector that has come fully or partially unplugged from the compressor terminals or the control board. Inspect all connectors along the compressor wiring harness for proper seating.

  2. 02

    Corroded or oxidized connector terminals

    Wiring / connection

    Moisture exposure in outdoor units can cause terminal pins to corrode, creating high resistance or an open circuit even when the connector appears attached. Look for green or white buildup on the metal pins inside the connector.

  3. 03

    Damaged or broken wiring harness

    Part replacement

    A wire in the harness may be physically broken, frayed, or pinched, interrupting the circuit between the compressor and the control board. A visual inspection and continuity test with a multimeter can confirm a broken conductor.

  4. 04

    Loose compressor terminal connection

    Wiring / connection

    The spade or screw terminals on the compressor body itself may have loosened due to vibration over time. Check that each terminal lead is firmly seated and shows no signs of arcing or heat damage.

  5. 05

    Faulty control board

    Part replacement

    If all wiring and connectors check out as intact and properly connected, the control board may have a failed input circuit that incorrectly reports the compressor wire as unconnected. This is a less common cause and is typically diagnosed after all wiring has been confirmed good.

See the test procedure for each cause

Frequently asked questions about E467

What does E467 mean on a Samsung air conditioner?
E467 means the air conditioner has detected an unconnected or open wire on the compressor 1 circuit. The control board monitors the compressor wiring and shuts down operation when it cannot confirm a proper connection. This fault is intended to protect the compressor from running without a verified electrical circuit. A technician should inspect the compressor wiring harness and all related connectors as the first step.
Can I fix E467 on my Samsung air conditioner myself?
A knowledgeable DIYer can visually inspect the outdoor unit for obvious disconnected or loose wiring connectors, but working on compressor wiring involves high-voltage components and refrigerant-handling equipment. If the fix involves anything beyond reseating a clearly disconnected plug, it is strongly recommended to have a certified HVAC technician perform the repair. Improper handling of compressor wiring can result in electrical shock or equipment damage.
Is it safe to keep running my air conditioner with an E467 error?
No. When E467 is active, the system has already disabled the compressor to protect it from damage. Attempting to override or ignore the fault and run the unit could cause further damage to the compressor or the control board. The unit should remain off until the wiring fault has been identified and corrected by a qualified technician.
Will resetting my Samsung air conditioner clear the E467 error?
A power reset may temporarily clear the fault code from the display, but if the underlying wiring connection issue is not resolved, E467 will return as soon as the system attempts to operate the compressor. A reset does not fix a physical wiring problem. The root cause must be identified and repaired before the unit will operate normally.
How much does it cost to repair an E467 error on a Samsung air conditioner?
Repair costs depend on the specific cause of the fault. If the fix is simply reseating a loose connector, the cost may be limited to a service call fee, typically in the range of $75 to $150. If a wiring harness needs replacement, costs could range from $150 to $400 or more depending on labor and part pricing. A control board replacement, if needed, can push total costs higher, often in the $300 to $700 range or beyond depending on the model.

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