Model reference

Lg Samsung RM257AC

Refrigerator

18 documents48 error codes6 service modes

Available documentation

Tech Sheet

LG Samsung RM257AC Product Specification8 pg
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Service Manual

LG Samsung RM257AC Reference Information6 pg
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BASIC RM257AB Disassembly & Reassembly12 pg
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LG Samsung BASIC RM257AB Reference Information6 pg
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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 RM257AB Technical Service Guide85 pg
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REFRIGERATOR SIDE BY SIDE BASIC RM257AB Technical Service Guide4 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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LG Samsung BASIC RM257AB Schematic Diagram3 pg
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LG Samsung RM257ACRSXAC Schematic Diagram3 pg
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Troubleshooting

LG Samsung RM257AC Troubleshooting26 pg
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Quick Reference

quick start guide10 pg
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LG Samsung RM257ACRSXAC Reference Information6 pg
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Other

RM257AC Fast track10 pg
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Ice maker sensor system abnormality

From Service Manual 622522, p.14:

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 (48)

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…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 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…
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)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.

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