Samsung RM255BABB Machine Compartment Electric Box, PCB-MAIN Assy, Sub-condenser, Water Solenoids

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DISASSEMBLY AND REASSEMBLY

Machine Compartment Electric Box

1.Disconnect the power cord of the refrigerator.

2.Remove the fixing screws (8) of compressor cover.

3.Slide up and take off the compressor cover to see the machine compartment.

4.Unscrew the electric box cover in the rear of refrigerator with the crossed-head screwdriver.(2 screws)

5.Separate the electric box by lifting up to see pcb-main-assy.

PCB-MAIN

ASSY

Sub-condenser

The sub-condenser is located in the machine compartment. Heat is released by the condenser fan.

1.Desolder the compressor discharge the sub-condenser outlet.

2.Take out the sub-condenser.

Desoldering

Point

Water Solenoids

When the solenoids receive a signal from the micro-processor, they supply water to the water dispenser or the ice maker.

1.Remove bracket screw (1) on cabinet bottom right sid.

2.Take the solenoid assembly out.

3.Disconnect the water tubes (3).

Condenser Fan

The condenser Fan is located in the middle of the machine compartment. It cools down the sub- condenser and the compressor.

1.Disconnect the condenser fan wire.

2.Separate the condenser fan hook attached to the drain water tray by slightly lifting and pulling the condenser fan.

3.Take the condenser fan assembly off.

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Contents RM255BARB RM255BASB RM255BABB Authorized Training Center Campuses Important Safety Notice Contents Precautionssafety Warnings Symbols Forbidden Product Specifications Manual This operation instruction covers various modelsAfter packing 386lbs Model SpecificationRM25 Sensor Electric Parts SpecificationRunning Specifications Model Dispenser Home BarElectric Components ItemsPart Code Optional Material SpecificationsPhotograph Operating Instructions & Installation Digital Panel Temperature Control OperationBy in inside function irrespective of current setting Power Freeze and Power cool OperationPower Freeze Operation Power cool OperationCube / Crushed / ICE OFF Selection Function At Initial Power OnLock Function Able to operate on front panelLoad Operation Condition Machine Room F-Fan Motor Delay FunctionWater Dispenser Function Light OperationMaximum torsion point Initial OperationReverse rotation CCW Forward rotation CW Ice extraction Horizontal position Interval about 880msWater Supply Time Water Supply FunctionIce-Making Function Ice Extraction FunctionBold numerals indicate relevant ice tray steps Horizontality operation 53.6 62.6 Defrosting FunctionDefrosting period is fixed to 8 hours Arctic ZoneFresh Select Zone Function Arctic Select Zone FunctionFunction OperationOperation start Function Operation SpecificationTemp .8 ~ 44.6 of the Fridge compartment Test KEYFor the R compartment Forced Defrosting FunctionDisplay Function at Panel Alarm FunctionCommunication Error Display Function When water supply is finished, in the ice maker test modeSelf-Diagnostics Function Operating Instructions & InstallationBAD Item Trouble Status Self-Diagnostics ChecklistCR Sensor ErrorDefrosting Sensor of RTrouble CF-FAN ErrorCR-FAN Error On ErrorRelevant displays about load status is as follows Load Mode Checklist Load Item Load StatusLoad Condition Display Function Option Setting Function Changing to Optional ModeValue Item KEY FunctionChange for freezer compartment Temperature Change Table for the Freezer CompartmentKEY Temperature Change Table for the Refrigerator CompartmentFlow sensor CR Room Temperature Shift FunctionCase of basic model, the following items cannot be set Maker For Ice MakerDisassembly and Reassembly Door Assy Removing the Front Leg CoverRemoving the Freezer Door Removing the Refrigerator Door Liner on the right side of the rail To separate it Open the Fresh Select Zone DoorRemove two screws holding it to Reattaching the Freezer Door Reattaching the Refrigerator Door Levelling Zone Open the Arctic Select Zone DoorClose the filter cartridge cover Do not overtighten the compression Note nutWater line must be connected to drinkable water only Door Gasket Door Sub PartsControl Panel Door HandlePlastic Drawers in the Refrigerator Refrigerator Door Light SwitchRefrigerator Light Tempered Glass ShelfPlastic Drawer in Freezer Freezer Door Light SwitchFreezer Compartments Door Bin in FreezerFreezer Light Ice Dispenser Ice MakerTighten the screws 2 of the ice maker support Upper Ductwork Auger Motor CaseScrews Pull the upper part of the evaporator cover slightly Partition in the FreezerEvaporator in Freezer Evaporator Fan MotorWater Tank Freezer ThermistorThermistor cover Screw Ice-Maker ThermistorEvaporator Fan Motor in Refrigerator Evaporator cover in the RefrigeratorFresh /Arctic Select ZoneTM Thermistor Evaporator in FridgeRefrigerator Thermistor Ductwork Thermistor Thermistor coverUpper Ductwork Water Solenoids Machine Compartment Electric BoxPCB-MAIN Assy Sub-condenserRemoving the Arctic Select Zone Accessories Check at the Smps PBA Check Main PCB connection If power is not onStart NormalIf the compressor doesn’t work normally Check connector for Contact failureExchange and repair COMP. Assembly Perform forced defrosting for F R room one at a time ReferenceCheck the soldering on the main PCB for Shorts & breaks If the ambient temperature sensor has troubleHow To Check Temperature Sensing in the manual If there is a trouble with self-diagnosissensor failureGasket, food etc Alarm Sounds continuouslyrelated to the buzzerIf Ding-Dong sounds continuously Start If Beep sounds continuously StartReplace buzzer or panel PCB If the buzzer doesn’t soundMain PCB is normal, buzzer is Normal Buzzer is broken - replace itIt is a care Where the Panel PCB key isn’t selectedIf the panel PCB is not working normally Condition If fan motor doesn’t working normalyDoor S/W Door Open 0V DCDoor Open DC These signals will be inputted into MicomIf Ice Cubed or/and Ice Crushed dont work normally Replace Inside lamp Replace or troubleshoot Door S/W If Indoor Lamp of Freezer/Refrigerator doesn’t lightIf Water Drawer doesnt work normally Preliminary Check Failure of panel PCB itself Replace connector Wire and switchReplace connector and wire If Dispenser LED Lamp doesnt lightWiring Diagram Connector Arrangement Main Board Circuitschematic Diagram Conn Ector Arrangement SMP S Board A voltage proportional to Power BUS64.7 98.993.7 40.0 88.9 38.2 84.2 36.4 79.8 34.6 75.7 32.8 71.8 68.2107 IC75 Input IC75 Output FAN#18 GND0.8V Remarks Motor Drive Circuit DescriptionsPrinciple of Operation Comparison in HIGH/LOW SpeedXAA Reference Information 13-2 Q & a Problem Possible Causes What To DoSmall or hollow cubes Problem Possible Causes What To DoSuction Pipe Additional InformationCompressor Sub-condenser Hot Pipe Dryer Step valve Freezer Refrigerator