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Error code reference

LG Air Conditioner Error Code E371

Error due to the INV2 Data Flash.

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What the E371 error code actually means

Your LG air conditioner has detected a problem with the memory chip inside one of its inverter control boards. This memory stores important settings the system needs to run, and when it fails or becomes corrupted, the unit shuts down to protect itself. A technician will need to inspect or replace the inverter board to resolve this issue.

Diagnostic procedure

The full E371 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

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1
Confirm the fault
Power cycle the unit: switch off the breaker for 60 seconds, then restore power. If the code returns, the fault is persistent and the procedure below isolates the cause.
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Most common causes of E371

Ranked by how often they cause this code
  1. 1Failed or corrupted INV2 flash memory chip
  2. 2Power surge or unstable power supply
  3. 3INV2 inverter board hardware failure
  4. 4Firmware corruption or incomplete update
  5. 5Faulty communication or wiring to the INV2 board

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Questions people ask about E371

What does E371 mean on a LG air conditioner?
E371 indicates an error related to the Data Flash memory on the INV2 inverter board. This memory holds critical configuration and operational data the inverter needs to run. When the system cannot properly access or verify this memory, it shuts down and displays E371 to prevent unsafe operation.
Is it safe to keep running my LG air conditioner with an E371 error?
No, the unit will typically stop operating when E371 is active as a protective measure. Attempting to force the system to run with a corrupted or failed inverter memory could risk damaging other components. Leave the unit powered down and schedule a service call promptly.
How much does it cost to repair an E371 error on an LG air conditioner?
Repair costs vary depending on whether the fix involves a firmware reflash or a full INV2 inverter board replacement. A board replacement is typically the more expensive route, with parts and labor costs potentially ranging from around $200 to over $600 depending on the model and service region. A technician diagnostic visit is the first step to getting an accurate estimate.
Can I fix E371 on my LG air conditioner myself?
This error is generally not something a homeowner can resolve without specialized tools and technical knowledge. It involves the inverter board's internal flash memory, which may require firmware reflashing or board replacement. It is strongly recommended to contact a certified LG technician to properly diagnose and repair this fault.
Will resetting my LG air conditioner clear the E371 error?
A simple power reset is unlikely to clear E371 because the underlying cause is a hardware or firmware issue with the INV2 board's flash memory, which persists across power cycles. The error may temporarily disappear but will return if the root cause is not addressed. A proper repair by a technician is needed for a lasting resolution.

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