LG · Refrigerator
LG Refrigerator rS Error Code
Refrigerator compartment sensor fault
What this error means
rS is a Refrigerator Sensor error—the fresh food compartment thermistor failed to report valid temperature, causing erratic compressor cycling or warm fridge sections.
How RS is detected
RS on LG refrigerator units indicates the drive system did not meet expected performance. Direct-drive washers monitor rotor position with a hall sensor; dryers and dishwashers track motor current draw. When the drum or spray arm fails to turn, the inverter or motor relay shuts down to prevent burned windings. LG LFXC22526S, LG LFXS26973S, and similar variants may show this fault after an overloaded tub or a foreign object jam.
Sensor slipped out of the air duct clip is a leading trigger. Start with verify vents in the fridge are not blocked by tall containers. Rotate the drum or spray arm by hand when powered off—it should move without grinding. Grinding confirms mechanical obstruction; free rotation with repeated RS on light loads suggests hall sensor, motor, or inverter board failure requiring professional diagnosis.
Common causes
- Sensor slipped out of the air duct clip
- Damaged wire in the fresh food liner
- Corrosion at the main board connector
- Rare main board analog input failure
Step-by-step fixes
- 1Verify vents in the fridge are not blocked by tall containers
- 2Power off and reseat the refrigerator thermistor connector
- 3Compare actual food temp with display reading using a thermometer
- 4Leave doors closed one hour after reseat before evaluating
When to call a technician
Open-circuit thermistor requires replacement—part number varies by liner style.
Affected models
- LG LFXC22526S
- LG LFXS26973S
- LG LRFVS3006S
Prevention & maintenance
- Avoid washing single heavy rugs or shoes that bind the drum; distribute weight evenly to reduce motor strain that precedes RS.
- Record when RS appears in the cycle and whether it clears after a 60-second power reset on your LG refrigerator—that detail speeds diagnosis if you call service.
- Keep the model and serial number from the rating plate when ordering parts for RS; LG uses multiple revisions with different harness lengths and board firmware.
- Photograph wiring connector orientation before disconnecting any component while troubleshooting RS; reversed plugs on pumps and valves cause immediate repeat faults.