Model reference

Lg Samsung RM257AB

Refrigerator

5 documents24 error codes4 service modes

Available documentation

Service Manual

BASIC RM257AB Disassembly & Reassembly12 pg
Covers this model
LG Samsung BASIC RM257AB Reference Information6 pg
Covers this model
Refrigerator Side by Side Basic RM257AB Technical Service Guide85 pg
Covers this model
REFRIGERATOR SIDE BY SIDE BASIC RM257AB Technical Service Guide4 pg
Covers this model

Wiring Diagram

LG Samsung BASIC RM257AB Schematic Diagram3 pg
Covers this model

MyPros+ Max

Diagnose your Lg Samsung RM257AB.

Step-by-step diagnostics from the service manual
Test values, resistance specs, and wiring references
Verified part numbers when replacement is needed

Start diagnosing

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

M+

M+ Max·Lg Samsung Refrigerator

1 on my Lg Samsung RM257AB

M+

Ice maker sensor system abnormality

From Service Manual 622523, p.15:

1.Access service mode to confirm the active fault code and read stored error history.

2.Disconnect the sensor and measure resistance. Expected: 10 kΩ to 12 kΩ at 77°F (25°C).

3.Check the sensor harness for opens. A reading outside 5 kΩ to 50 kΩ indicates a failed sensor.

Part WP8577274

Temperature thermistor

Error codes (24)

CodeMeaning

1Ice maker sensor system abnormality (electric wire cut, short-circuit, contact…10CF compartment defrosting sensor system abnormality (electric wire cut…11Abnormality in defrosting system for CR compartment (heater electric wire cut…12Abnormality in defrosting system for CF compartment (heater electric wire cut…13Water heater system abnormality (water heater housing missing or electric wire…14External atmosphere sensor system abnormality (electric wire cut…15F compartment sensor system abnormality (electric wire cut, short-circuit…16F compartment defrosting sensor system abnormality (electric wire cut…17Fan motor system abnormality in F compartment (contact failure on feedback…18Fan motor system abnormality in machine compartment (contact failure on…19CF compartment sensor system abnormality (electric wire cut, short-circuit…2R compartment sensor system abnormality (electric wire cut, short-circuit…20Abnormality in defrosting system for F compartment (heater electric wire cut…21Fan motor system abnormality in CF compartment (contact failure on feedback…22Fan motor system abnormality in CR compartment (contact failure on feedback…24Ice pipe heater system abnormality (ice pipe heater housing missing or electric…25Bad communication between LOAD and MAIN MICOM (communication interrupted for…26Bad communication between PANEL and MAIN MICOM (communication interrupted for…3R compartment defrosting sensor system abnormality (electric wire cut…4Fan motor system abnormality in R compartment (contact failure on feedback…5Ice maker operation abnormality (bad horizontality and bad ice tray more than…7Abnormality in defrosting system for R compartment (heater electric wire cut…8CR compartment sensor system abnormality (electric wire cut, short-circuit…9CR compartment defrosting sensor system abnormality (electric wire cut…

Service modes (4)

Load Condition Display ModeNot explicitly stated (referenced as Load Condition Display Function in section 4-5).
Option Setting ModePress and hold the Arctic Select Zone Setting Key and the Fridge Compartment Key simultaneously for…
Self-Diagnostics ModePress the Freezer setting key and the Fridge setting key simultaneously for about 8 seconds…
Test Mode (Forced Operation / Forced Defrosting)Press and hold the Fresh Select Zone key and the F compartment key on the PANEL PCB simultaneously…

Full entry steps, exit procedures, and test sequences are available in Max.

78,000+ service manuals · 160,000+ error codes · 55+ brands

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