Samsung RM255BASB, RM255BABB manual If Water Drawer doesnt work normally Preliminary Check

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DIAGNOSTIC

6-10) If Water Drawer doesn't work normally

Preliminary Check

1.Stop water supply before disassembling or assembling because water is directly supplied to the water valve.

2.Keep in mind to avoid shock hazard during disassembly because power is always present on one side of wire.

Check water coming out when pressing water lever at dispenser.

Measure both terminals of RY7C contact point after disconnecting CN72 and CN73 connectors.

Start

Does it work normally when			YES
Does it work normally when
selecting water?
selecting water?

	NO			Normal Working Condition
	NO			Normal Working Condition

Was dispenser water			YES
Was dispenser water
s/w pressed?
s/w pressed?

	NO			Check the instrumental interference
				of dispenser water s/w.
Does Main MICOM No. 13 maintain			NO
			NO

0V when pressing water s/w?


	YES			Check CN50 connector, wire
				and failure of water s/w itself.
Does IC74 No. 16 maintain 0V			NO
			NO

when pressing water s/w?


	YES			Main PCB failure: Replace it
				(IC74 failure).
Is RY70 relay AC contact terminal			NO
			NO

0Ω when pressing water s/w?
0Ω when pressing water s/w?

YES

Normal Main PCB

-Need to check other sections. Check the wire between WATER SOLENOID VALVE and MAIN PCB. Failure of WATER VALVE itself connector contact failure

Check for connecting pipe failure.

Main PCB failure: Replace it. (RY7D Relay Contact Terminal Short Failure)

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Contents RM255BARB RM255BASB RM255BABB Authorized Training Center Campuses Important Safety Notice Contents Precautionssafety Warnings Symbols Forbidden Product Specifications This operation instruction covers various models ManualModel Specification RM25After packing 386lbs Electric Parts Specification SensorSpecifications Model Dispenser Home Bar Electric ComponentsItems RunningOptional Material Specifications PhotographPart Code Operating Instructions & Installation Temperature Control Operation Digital PanelPower Freeze and Power cool Operation Power Freeze OperationPower cool Operation By in inside function irrespective of current settingAt Initial Power On Lock FunctionAble to operate on front panel Cube / Crushed / ICE OFF Selection FunctionMachine Room F-Fan Motor Delay Function Water Dispenser FunctionLight Operation Load Operation ConditionInitial Operation Reverse rotation CCW Forward rotation CW Ice extractionHorizontal position Interval about 880ms Maximum torsion pointWater Supply Function Ice-Making FunctionIce Extraction Function Water Supply TimeBold numerals indicate relevant ice tray steps Horizontality operation Defrosting Function Defrosting period is fixed to 8 hoursArctic Zone 53.6 62.6Arctic Select Zone Function FunctionOperation Fresh Select Zone FunctionFunction Operation Specification Temp .8 ~ 44.6 of the Fridge compartmentTest KEY Operation startForced Defrosting Function For the R compartmentAlarm Function Communication Error Display FunctionWhen water supply is finished, in the ice maker test mode Display Function at PanelOperating Instructions & Installation Self-Diagnostics FunctionSelf-Diagnostics Checklist BAD Item Trouble StatusError DefrostingSensor of R CR SensorCF-FAN Error CR-FAN ErrorOn Error TroubleLoad Mode Checklist Load Item Load Status Load Condition Display FunctionRelevant displays about load status is as follows Changing to Optional Mode Option Setting FunctionKEY Function Value ItemTemperature Change Table for the Freezer Compartment Change for freezer compartmentTemperature Change Table for the Refrigerator Compartment KEYCR Room Temperature Shift Function Case of basic model, the following items cannot be setMaker For Ice Maker Flow sensorDisassembly and Reassembly Removing the Front Leg Cover Door AssyRemoving 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 Open the Arctic Select Zone Door ZoneDo not overtighten the compression Note nut Water line must be connected to drinkable water onlyClose the filter cartridge cover Door Sub Parts Control PanelDoor Handle Door GasketRefrigerator Door Light Switch Refrigerator LightTempered Glass Shelf Plastic Drawers in the RefrigeratorFreezer Door Light Switch Freezer CompartmentsDoor Bin in Freezer Plastic Drawer in FreezerIce Dispenser Ice Maker Tighten the screws 2 of the ice maker supportFreezer Light Auger Motor Case Upper DuctworkPartition in the Freezer Screws Pull the upper part of the evaporator cover slightlyEvaporator Fan Motor Evaporator in FreezerFreezer Thermistor Thermistor cover ScrewIce-Maker Thermistor Water TankEvaporator cover in the Refrigerator Evaporator Fan Motor in RefrigeratorEvaporator in Fridge Refrigerator ThermistorDuctwork Thermistor Thermistor cover Fresh /Arctic Select ZoneTM ThermistorUpper Ductwork Machine Compartment Electric Box PCB-MAIN AssySub-condenser Water SolenoidsRemoving the Arctic Select Zone Accessories If power is not on StartNormal Check at the Smps PBA Check Main PCB connectionCheck connector for Contact failure Exchange and repair COMP. AssemblyIf the compressor doesn’t work normally Reference Perform forced defrosting for F R room one at a timeIf the ambient temperature sensor has trouble How To Check Temperature Sensing in the manualIf there is a trouble with self-diagnosissensor failure Check the soldering on the main PCB for Shorts & breaksAlarm Sounds continuouslyrelated to the buzzer If Ding-Dong sounds continuously StartIf Beep sounds continuously Start Gasket, food etcIf the buzzer doesn’t sound Main PCB is normal, buzzer is NormalBuzzer is broken - replace it Replace buzzer or panel PCBWhere the Panel PCB key isn’t selected If the panel PCB is not working normallyIt is a care If fan motor doesn’t working normaly Door S/WDoor Open 0V DC ConditionThese signals will be inputted into Micom Door Open DCIf Ice Cubed or/and Ice Crushed dont work normally If Indoor Lamp of Freezer/Refrigerator doesn’t light Replace Inside lamp Replace or troubleshoot Door S/WIf Water Drawer doesnt work normally Preliminary Check Replace connector Wire and switch Replace connector and wireIf Dispenser LED Lamp doesnt light Failure of panel PCB itselfWiring Diagram Connector Arrangement Main Board Circuitschematic Diagram Conn Ector Arrangement SMP S Board Power BUS A voltage proportional to98.9 93.7 40.0 88.9 38.2 84.2 36.4 79.8 34.6 75.7 32.8 71.868.2 64.7IC75 Input IC75 Output FAN #18 GND0.8V107 Motor Drive Circuit Descriptions Principle of OperationComparison in HIGH/LOW Speed RemarksXAA 13-2 Q & a Problem Possible Causes What To Do Reference InformationProblem Possible Causes What To Do Small or hollow cubesAdditional Information Compressor Sub-condenser Hot Pipe Dryer Step valveSuction Pipe Freezer Refrigerator