Model reference
LG GR-J303UG*
Refrigerator
1 document9 error codes6 service modes
Available documentation
Service Manual
- Kimchi Refrigerator Service Manual37 pg
MyPros+ Max
Diagnose your LG GR-J303UG*.
- Step-by-step diagnostics from the service manual
- Test values, resistance specs, and wiring references
- Verified part numbers when replacement is needed
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Error codes (9)
CodeMeaning
COCommunication failured1Upper compartment defrosting sensor is disconnected or shorted.d2Middle compartment defrosting sensor is disconnected or shorted.dPSingle motor damper failureFSUpper compartment sensor is disconnected or shorted.H1Poor defrosting at upper compartmentH2Poor defrosting at middle compartmentLSLower compartment sensor is disconnected or shorted.USMiddle compartment sensor is disconnected or shorted.Service modes (6)
- Display CheckPress both upper 'Store' button and lower 'Store' button simultaneously for more than 1 second.
- FRONT-C Heater Inspection ModePress both upper 'Store' button and lower 'Ferment' button simultaneously for more than 5 seconds.
- TEST1Press the test switch on the main PCB once.
- TEST2Press the test switch once during TEST1 mode.
- TEST3Press the test switch once during TEST2 mode.
- TEST4Press the test switch once during TEST3 mode.
Full entry steps, exit procedures, and test sequences are available in Max.
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