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Error code reference
LG Refrigerator Error Code Er CS
Convertible room sensor error caused by short or disconnection of the convertible room sensor.
SourceLG LMX28994 Refrigerator - Full Service Manualp. 24, 33
Diagnostic procedure
The full Er CS 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 for a loose connection, then measure resistance between Blue/Red wires at CON9; 0 ohm = short (replace refrigerator), open = change sensor, otherwise compare to temperature table.
SourceLG LMX28994 Refrigerator - Full Service Manualp. 24, 33
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
1 manual in the MyPros+ library documents this code for LG refrigerator.
Models covered by the manuals that document this code
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