mypros+
Error code reference

LG Refrigerator Error Code F dS

F-Room defrost sensor error (covers both Defrost Sensor 1 and Defrost Sensor 2) - open or short circuit in the freezer defrost sensor.

SourceLG Refrigerator - Full Service Manual: GR-M24 Seriesp. 24-25

LG codesLG refrigerator codes
Diagnostic procedure

The full F dS 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
After separating CON7 from MAIN PCB, measure resistance between PIN 19 and 20 (sensor 1) or PIN 21 and 22 (sensor 2); expected 6-300 kOhm.

SourceLG Refrigerator - Full Service Manual: GR-M24 Seriesp. 24-25

Unlock with pass
Unlock with pass
Unlock with pass
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
Unlock F dS procedure $9.95

Or subscribe: $29/month for all codes plus Max diagnostics, with 70 Max messages a day. Plus applicable tax.

Where this code is documented

60 manuals in the MyPros+ library document this code for LG refrigerator.

Models covered by the manuals that document this code

More models are covered than are listed here.

Related LG refrigerator error codes

All LG refrigerator codes

75,000+ service documents · 20,000+ error codes · 100+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass · Plus applicable tax