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Error code reference

LG Washer Error Code EB

Motor Triac Short Error

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What the EB error code actually means

Your LG washer has detected a problem with an internal electronic component that controls the motor. This component, called a triac, appears to have failed in a way that causes the washer to receive a flood of bad speed signals. The washer shuts down to prevent further damage, and the machine will likely need a repair by a technician to replace the faulty part.

Diagnostic procedure

The full EB procedure

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1
First diagnostic step
Turn POWER S/W OFF to clear error.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of EB

Ranked by how often they cause this code
  1. 1Shorted motor triac on control board
  2. 2Failed or damaged drive motor
  3. 3Voltage spike or power surge
  4. 4Faulty wiring or connector between control board and motor

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Questions people ask about EB

What does EB mean on a LG washer?
The EB code on an LG washer stands for Motor Triac Short Error. It means the control board is receiving more than 300 tachometer signals per second from the motor circuit, which indicates a short circuit in the triac component that controls motor power. This fault causes the washer to stop operating to prevent additional damage to the motor or electronics.
Is it safe to keep using my LG washer when the EB error is showing?
No, it is not safe to continue operating the washer while the EB error is active. A shorted triac can allow uncontrolled electrical current to flow through the motor circuit, which risks overheating the motor, damaging additional components on the control board, or causing an electrical hazard. The machine should remain off until the fault is diagnosed and repaired.
Can I replace the triac myself to fix the EB error?
Replacing an individual triac component requires desoldering the failed part from the control board and soldering in a replacement, which demands electronics repair skills and proper tools. Most technicians and experienced DIYers choose to replace the entire control board rather than attempt component-level repair. If you are not comfortable working with circuit boards and AC-powered appliances, professional service is the safer option.
Will turning the washer off and on again fix the EB error?
Turning the power switch off is the first recommended step and may clear a temporary fault. However, if the triac has actually failed in a shorted state, the EB error will return as soon as the machine attempts to run again. A recurring EB code after a power reset almost always means a hardware component needs to be replaced.
How much does it cost to fix an EB error on an LG washer?
Repair costs depend on which component has failed. A replacement motor control board or main control board typically ranges from around 80 to 250 dollars for the part alone, plus labor costs that vary by region. If the drive motor itself also needs replacement, total repair costs could range from 200 to 500 dollars or more. Getting a diagnosis first helps avoid replacing parts that are still functional.

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