Machine Compartment Electric Box, PCB-MAIN Assy | Samsung RM255BABB

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

Contents

RM255BARB RM255BASB RM255BABB Authorized Training Center Campuses Important Safety Notice Contents Precautionssafety Warnings Symbols Forbidden Product Specifications Manual This operation instruction covers various models After packing 386lbs Model SpecificationRM25 Sensor Electric Parts Specification Running Specifications Model Dispenser Home BarElectric Components Items Part Code Optional Material SpecificationsPhotograph Operating Instructions & Installation Digital Panel Temperature Control Operation By in inside function irrespective of current setting Power Freeze and Power cool OperationPower Freeze Operation Power cool Operation Cube / Crushed / ICE OFF Selection Function At Initial Power OnLock Function Able to operate on front panel Load Operation Condition Machine Room F-Fan Motor Delay FunctionWater Dispenser Function Light Operation Maximum torsion point Initial OperationReverse rotation CCW Forward rotation CW Ice extraction Horizontal position Interval about 880ms Water Supply Time Water Supply FunctionIce-Making Function Ice Extraction Function Bold numerals indicate relevant ice tray steps Horizontality operation 53.6 62.6 Defrosting FunctionDefrosting period is fixed to 8 hours Arctic Zone Fresh Select Zone Function Arctic Select Zone FunctionFunction Operation Operation start Function Operation SpecificationTemp .8 ~ 44.6 of the Fridge compartment Test KEY For the R compartment Forced Defrosting Function Display Function at Panel Alarm FunctionCommunication Error Display Function When water supply is finished, in the ice maker test mode Self-Diagnostics Function Operating Instructions & Installation BAD Item Trouble Status Self-Diagnostics Checklist CR Sensor ErrorDefrosting Sensor of R Trouble CF-FAN ErrorCR-FAN Error On Error Relevant displays about load status is as follows Load Mode Checklist Load Item Load StatusLoad Condition Display Function Option Setting Function Changing to Optional Mode Value Item KEY Function Change for freezer compartment Temperature Change Table for the Freezer Compartment KEY Temperature Change Table for the Refrigerator Compartment Flow sensor CR Room Temperature Shift FunctionCase of basic model, the following items cannot be set Maker For Ice Maker Disassembly and Reassembly Door Assy Removing the Front Leg Cover Removing 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 Door Close 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 Handle Plastic Drawers in the Refrigerator Refrigerator Door Light SwitchRefrigerator Light Tempered Glass Shelf Plastic Drawer in Freezer Freezer Door Light SwitchFreezer Compartments Door Bin in Freezer Freezer Light Ice Dispenser Ice MakerTighten the screws 2 of the ice maker support Upper Ductwork Auger Motor Case Screws Pull the upper part of the evaporator cover slightly Partition in the Freezer Evaporator in Freezer Evaporator Fan Motor Water Tank Freezer ThermistorThermistor cover Screw Ice-Maker Thermistor Evaporator Fan Motor in Refrigerator Evaporator cover in the Refrigerator Fresh /Arctic Select ZoneTM Thermistor Evaporator in FridgeRefrigerator Thermistor Ductwork Thermistor Thermistor cover Upper Ductwork Water Solenoids Machine Compartment Electric BoxPCB-MAIN Assy Sub-condenser Removing the Arctic Select Zone Accessories Check at the Smps PBA Check Main PCB connection If power is not onStart Normal If 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 Reference Check 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 failure Gasket, food etc Alarm Sounds continuouslyrelated to the buzzerIf Ding-Dong sounds continuously Start If Beep sounds continuously Start Replace buzzer or panel PCB If the buzzer doesn’t soundMain PCB is normal, buzzer is Normal Buzzer is broken - replace it It 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 DC Door Open DC These signals will be inputted into Micom If 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 light If 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 light Wiring Diagram Connector Arrangement Main Board Circuitschematic Diagram Conn Ector Arrangement SMP S Board A voltage proportional to Power BUS 64.7 98.993.7 40.0 88.9 38.2 84.2 36.4 79.8 34.6 75.7 32.8 71.8 68.2 107 IC75 Input IC75 Output FAN#18 GND0.8V Remarks Motor Drive Circuit DescriptionsPrinciple of Operation Comparison in HIGH/LOW Speed XAA Reference Information 13-2 Q & a Problem Possible Causes What To Do Small or hollow cubes Problem Possible Causes What To Do Suction Pipe Additional InformationCompressor Sub-condenser Hot Pipe Dryer Step valve Freezer Refrigerator