Error code reference

LG Air Conditioner Error Code 87

Fan PCB EEPROM error: EEPROM checksum error during initialization after power supply.

SourceLG Air Conditioner - Service Manual: Heat Recovery Outdoor Unit R410A (ARUB80LT2)p. 148

Diagnostic procedure

The full 87 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.

MyPros+ · DiagnosticsStep 1 preview

First diagnostic step

Check EEPROM insertion direction and connection condition; check EEPROM checksum; replace fan PCB assembly if needed.

SourceLG Air Conditioner - Service Manual: Heat Recovery Outdoor Unit R410A (ARUB80LT2)p. 148

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Where this code is documented

2 manuals in the MyPros+ library document this code for LG air conditioner.

Models covered by the manuals that document this code

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The full 87 procedure

Where this code is documented

Models covered by the manuals that document this code

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