Samsung RM255BABB, RM255BASB manual Reference, Perform forced defrosting for F R room one at a time

Page 63

DIAGNOSTIC

6-3) If the defrost function doesn’t work

Start

Is defrosting sensor by self-diagnosis normal?

NO

See test function in the manual.

NO

Recheck the corresponding sensor for an error if it fails in return.

Reference

If temp. of F, R defrosting sensors by the heaters working are over 50 63 respectirely, operation of defrosting heaters is over and return to normal operation after a respite.

See ‘Load Drive Circuit section’ and Ref. 2: How to check or failure

	YES					Exchange and troubleshoot the
						corresponding sensor.
Are all defrosting					NO
					NO

heaters normal?
	YES

						Check temp. fuse, breaking of heater
						Check temp. fuse, breaking of heater
					NO	contact of wire, and so on.
Is temperature of the corresponding					NO
Is temperature of the corresponding
defrosting sensor below 23			?


	YES					Run forced operation for a
	YES					specified period.
						specified period.

Perform forced defrosting for F

and R room one at a time.

Is power applied to the		NO
respective defrosting heaters?
respective defrosting heaters?
	YES

Does return to the cooling operation after heating for a specified period?

YES

Normal

Is the connection of terminal in	NO
Main PCB normal?


	YES		Repair the connection of terminal.
	YES		Repair the connection of terminal.

Check temp. fuse, breakn of heater contact of
Check temp. fuse, breakn of heater contact of
wire, and so on.

Exchange or troubleshoot the failure relay or

exchange PCB assembly.

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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 modelsModel Specification RM25After packing 386lbs Sensor Electric Parts SpecificationRunning Specifications Model Dispenser Home BarElectric Components ItemsOptional Material Specifications PhotographPart Code 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 ErrorLoad Mode Checklist Load Item Load Status Load Condition Display FunctionRelevant displays about load status is as follows 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 Open the Fresh Select Zone Door Remove two screws holding it toLiner on the right side of the rail To separate it Reattaching the Freezer Door Reattaching the Refrigerator Door Levelling Zone Open the Arctic Select Zone DoorDo not overtighten the compression Note nut Water line must be connected to drinkable water onlyClose the filter cartridge cover 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 FreezerIce Dispenser Ice Maker Tighten the screws 2 of the ice maker supportFreezer Light 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 NormalCheck connector for Contact failure Exchange and repair COMP. AssemblyIf the compressor doesn’t work normally 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 itWhere the Panel PCB key isn’t selected If the panel PCB is not working normallyIt is a care 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 68.2IC75 Input IC75 Output FAN #18 GND0.8V107 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 DoAdditional Information Compressor Sub-condenser Hot Pipe Dryer Step valveSuction Pipe Freezer Refrigerator