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Error code reference
LG Air Conditioner Error Code E123
Error of Eva In sensor in the indoor unit (Open/Short).
SourceLG System Air Conditioner - Service Manual (AC090-AC140 Series)p. 4-2
Diagnostic procedure
The full E123 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
1
First diagnostic step
Check if indoor temperature sensor is disconnected from connector CN412 on PCB.
SourceLG System Air Conditioner - Service Manual (AC090-AC140 Series)p. 4-2
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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Where this code is documented
3 manuals in the MyPros+ library document this code for LG air conditioner.
Models covered by the manuals that document this code
- AC090HBMDKH
- AC090HBMDKH/EU
- AC090HCADKH
- AC090HCADKH/EU
- AC090HCADNH
- AC090HCADNH/EU
- AC100HBMDKH
- AC100HBMDKH/EU
- AC100HCADKH
- AC100HCADKH/EU
- AC100HCADNH
- AC100HCADNH/EU
- AC120HBMDKH
- AC120HBMDKH/EU
- AC120HCADKH
- AC120HCADKH/EU
- AC120HCADNH
- AC120HCADNH/EU
- AC140HBMDKH
- AC140HBMDKH/EU
- AC140HCADKH
- AC140HCADKH/EU
- AC140HCADNH
- AC140HCADNH/EU
More models are covered than are listed here.
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