Model reference

LG RM257ACRSXAA

Refrigerator

8 documents48 error codes6 service modes

Available documentation

Service Manual

LG Samsung RM257ACRSXAA Reference Information6 pg
Covers this model
NEXT-RM257AC Reference Information6 pg
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NEXT-RM257AC Troubleshooting26 pg
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NEXT-RM257AC Technical Service Guide85 pg
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REFRIGERATOR SIDE BY SIDE BASIC Technical Service Guide5 pg
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Wiring Diagram

LG Samsung RM257ACRSXAA PCB Diagram4 pg
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LG Samsung RM257ACRSXAA Schematic Diagram3 pg
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Other

LG Samsung RM257ACRSXAA ZZZZZ ZZZZZ PCB Diagram4 pg
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Ice maker sensor system abnormality

From Service Manual 784809, p.21:

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 6322FR2046G

Temperature thermistor

Error codes (48)

CodeMeaning

1Ice maker sensor system abnormality (electric wire cut, short-circuit, contact…10Abnormality in defrosting sensor system for CF compartment (electric wire cut…11Abnormality in defrosting system for CR compartment (defrost heater electric…12Abnormality in defrosting system for CF compartment (defrost heater electric…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…16System abnormality of defrosting sensor for F compartment (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 (defrost heater electric…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 not achieved for…26Bad communication between PANEL and MAIN MICOM (communication not achieved for…3System abnormality of defrosting sensor for R compartment (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 (defrost heater electric…8CR compartment sensor system abnormality (electric wire cut, short-circuit…9Abnormality in defrosting sensor system for CR compartment (electric wire cut…C-FAN ERRORC-fan motor error CF-DEFROST ERRORCF compartment defrosting heater error CF-FAN ERRORCF-fan motor error CF-SENSORCF compartment sensor error CR SENSORCR compartment sensor error CR-DEFROST ERRORCR compartment defrosting heater error

View all 48 error codes

CR-FAN ERRORCR-fan motor error DEFROSTING SENSOR OF CF COMPARTMENTCF compartment defrosting sensor error DEFROSTING SENSOR OF CR COMPARTMENTCR compartment defrosting sensor error DEFROSTING SENSOR OF R COMPARTMENTR compartment defrosting sensor error EXT-SENSORExternal/ambient temperature sensor error F-DEF-SENSORF compartment defrosting sensor error F-DEFROSTING ERRORF compartment defrosting heater error F-FAN ERRORF-fan motor error F-SENSORFreezer compartment sensor error I/M FUNCTION ERRORIce maker function error I/M-SENSORIce maker sensor error ICE PIPE HEATER ERRORIce pipe heater housing missing or electric wire cut.L↔M COMMUNICATION ERRORCommunication error between MAIN MICOM and LOAD (SUB) MICOM; LED panel repeats…P↔M COMMUNICATION ERRORCommunication error between PANEL MICOM and MAIN MICOM; LED panel repeats ALL…R-DEFROSTING ERRORR compartment defrosting heater error R-FAN ERRORR-fan motor error R-SENSORRefrigerator compartment sensor error WATER HEATER ERRORWater heater housing missing or electric wire cut.

Service modes (6)

Load Condition Display ModeEntered via service diagnostics (not separately detailed in document).
Option Setting ModeSimultaneously press the Arctic Select Zone Setting Key and the Fridge Compartment Key for about 12…
Self-Diagnostics ModePress the Freezer setting key and the Fridge setting key simultaneously for 8 seconds
Self-Diagnostics Mode (During Normal Operation)Press the Freezer setting + Fridge setting keys simultaneously for approximately 8 seconds (display…
Self-Diagnostics Mode (Initial Power ON)Automatic
Test Mode (Forced Operation / Forced Defrosting)Simultaneously press the Fresh Select Zone key and the F compartment key on the PANEL PCB for more…

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

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