LG · Refrigerator Moderate

RS — Refrigerator sensor (thermistor) error

Refrigerator sensor (thermistor) error.

Keep using it?
Yes, with caution
DIY difficulty
Moderate
Typical cost
$15-35
Verified against
lg.com ↗

The fix

Refrigerator section thermistor

Refrigerator sensor (thermistor) error

$15-35 moderate difficulty 45 min Tools: screwdriver, multimeter

Diagnose first: Thermistor reads out of range; cheap to swap and verify with a meter (typ. ~16k ohms at room temp).

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How to fix it

  1. Thermistor reads out of range; cheap to swap and verify with a meter (typ. ~16k ohms at room temp).
  2. If diagnosis confirms the fault, replace the refrigerator section thermistor (typical cost $15-35, about 45 min, moderate DIY).

Why it happens

Typical signs: RS shown on the display · Refrigerator sensor (thermistor) error

  • Most likely: Refrigerator section thermistor Thermistor reads out of range; cheap to swap and verify with a meter (typ. ~16k ohms at room temp).

Related repair guides

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More LG refrigerator codes

22 22 — Compressor relay / inverter control fault 33 33 — Compressor / defrost test fault 67 67 — Door open / not fully closed 88 88 — Power-on display test (not a fault) Er CF Er CF — Condenser fan motor feedback fault Er CO Er CO — Communication error (main board ↔ display)

All LG codes → All refrigerator codes →

Frequently asked questions

What does the RS code mean on a LG refrigerator?

Refrigerator sensor (thermistor) error.

What causes the RS code on a LG refrigerator?

Most likely: Refrigerator section thermistor: Thermistor reads out of range; cheap to swap and verify with a meter (typ. ~16k ohms at room temp).

Is it safe to keep using a LG refrigerator with a RS error?

Yes, with caution. This is rated a moderate-severity fault.

How do I fix RS on a LG refrigerator?

Thermistor reads out of range; cheap to swap and verify with a meter (typ. ~16k ohms at room temp). If diagnosis confirms the fault, replace the refrigerator section thermistor (typical cost $15-35, about 45 min, moderate DIY).

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: lg.com.