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Error code reference
LG Air Conditioner Error Code 245
Central controller send timeout - data sending failure from central controller to CNU within designated time.
SourceLG Air Conditioner - Service Manual: R410A Exploded View (ARUB Series)p. 309
Diagnostic procedure
The full 245 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 CNU; verify central controller initialization.
SourceLG Air Conditioner - Service Manual: ARUV/ARUN/ARNU Seriesp. 295
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
10 manuals in the MyPros+ library document this code for LG air conditioner.
Models covered by the manuals that document this code
75,000+ service documents · 20,000+ error codes · 100+ brands
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