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LG Refrigerator Error Code Er rS

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: July 19, 2026
⚠ Medium Severity 🔧🔧 Moderate DIY Also shown as: rS

Refrigerator (fresh-food) compartment sensor error

The most common cause of the Er rS error on a LG refrigerator is refrigerator thermistor failed (open/short) (~60% of cases); start with: power cycle.

💰 DIY cost: $15–$45 👨‍🔧 Pro cost: $150–$300 Save $135+ by doing it yourself
LG Refrigerator error code Er rS on the display panel
How the Er rS code appears on a LG refrigerator display

What Does Error Code Er rS Mean on a LG Refrigerator?

Refrigerator (fresh-food) compartment sensor error.

Er rS fires when the control board sees the fresh-food compartment thermistor as an open or shorted circuit rather than a plausible resistance. This distinguishes it from Er FS (freezer sensor) and Er IS (ice-maker sensor), which flag other thermistors on separate inputs. Losing a valid reading forces the board onto a fallback cooling cycle, so the fridge section drifts warm or cold. A failed sensor is most common, followed by corroded or loose connectors in the damp cabinet.

Models affected: LG refrigerators that report the Er rS code, spanning French-door and side-by-side models such as the LFXS26973S, LFXS28968S, LRFVS3006S, LMXS28626S, and LRFDS3016S, as well as similar LG units with a dedicated fresh-food thermistor.
What owners report: Owners commonly report Er rS appearing alongside uneven fresh-food temperatures, sometimes after a humid spell or a defrost cycle that leaves moisture around the connector. A brief unplug occasionally clears a transient misread, but many find reseating a corroded connector or swapping the inexpensive sensor is the lasting quick win.

What Causes Error Code Er rS?

Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:

  1. 1
    Refrigerator thermistor failed (open/short) 60% of cases
  2. 2
    Connector corrosion or loose harness 25% of cases
  3. 3
    Harness pinched/broken behind the liner 10% of cases
  4. 4
    Control board sensor input fault 5% of cases

How to Fix LG Refrigerator Error Code Er rS

🔧🔧 Moderate DIY Est. time: 30–60 min
⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.
  1. 1

    Power cycle

    Unplug for 5 minutes; a transient sensor misread may clear.

  2. 2

    Inspect and reseat the connector

    Locate the fresh-food sensor connector and check for corrosion or a loose fit.

    ⚠️ Unplug before opening interior panels.
  3. 3

    Test and replace the sensor

    Compare resistance to spec (typically several kΩ near room temperature). Replace if out of range.

    🔩 Multimeter 🔩 LG refrigerator temperature sensor ($15–$45)

How to Reset Error Code Er rS

Unplug for 5 minutes. If Er rS returns, test the fresh-food sensor and reseat its connector before replacing.

Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.

Full LG refrigerator reset guide → Enter diagnostic mode →

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When to Call a Professional

If the sensor reads in spec and the harness is sound but Er rS persists, the control board's sensor input has failed.

Average professional repair cost for this issue: $150–$300

Related Error Codes

Er FS
Freezer temperature sensor error
⚠ Medium Severity
Er IS
Ice maker sensor failure
⚠ Medium Severity

Same Code on Other Brands

Error code Er rS appears on these other brands too. See every brand that shows Er rS →

Kenmore logo
Kenmore Refrigerator ER RS
Refrigerator temperature sensor fault

Find Replacement Parts

Use these links to find the exact replacement parts for your LG Refrigerator:

🔩
Search PartSelect
LG Refrigerator repair parts
🔧
Search RepairClinic
Step-by-step video guides

External links — ApplianceErrors.com is not affiliated with these retailers.

More LG Refrigerator Error Codes

Er FF Freezer fan error — fan motor not operating Er dH Defrost heater error — defrost cycle not completing Er CF Condenser fan motor error Er IF Ice maker fan error Er CO Communication error — main board to sub-board dS Defrost sensor open circuit

Frequently Asked Questions

Can I keep using my LG Refrigerator when error Er rS appears? +
You often can for a cycle or two, but the sensor issue behind Er rS will keep interrupting normal operation until it is fixed. Plan the repair rather than ignoring the code.
What most commonly causes Er rS on a LG Refrigerator? +
Across reported LG refrigerator repairs, the most frequent is refrigerator thermistor failed (open/short) (60% of cases), connector corrosion or loose harness (25%), then harness pinched/broken behind the liner (10%). Check them in that order before replacing any parts.
Er rS keeps coming back after a reset — what should I check next? +
A reset only clears the stored Er rS fault; if it returns, the sensor problem is still present. Move on to the physical checks — power cycle, then inspect and reseat the connector — since the code will reappear until the root cause is resolved. This is a moderate job — a multimeter and some disassembly are usually involved.
How much does it cost to fix LG Refrigerator error Er rS? +
A DIY repair typically runs $15–$45 in parts, versus $150–$300 for a professional service call, so handling it yourself saves around $135. Expect the work to take roughly 30–60 minutes.
Which LG Refrigerator models show error Er rS? +
Er rS is documented on LG refrigerators that report the Er rS code, spanning French-door and side-by-side models such as the LFXS26973S, LFXS28968S, LRFVS3006S, LMXS28626S, and LRFDS3016S, as well as similar LG units with a dedicated fresh-food thermistor.. Other units sharing the same control platform can display it too, so the fixes here generally transfer across the series.

Sources & References

Content verified against manufacturer service documentation. Last verified: July 19, 2026.

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