If the compressor doesn’t work normally | Samsung RM255BASB specification

DIAGNOSTIC

6-2) If the compressor doesn’t work normally

Start
Does 5 min pass after	NO
Does 5 min pass after
COMP. OFF?
YES	Recheck the comp after a
	5 min.

See the TEST FUNCTION						Does compressor work
in the manual.						with		forced operation?
						YES
Did buzzer sound on forced operation?						YES					NO
(Check certainly after forced start.)



	NO			Voltage value of MICOM pin No.9
									High?(5V)
									High?(5V)

Exchange MICOM and											YES
	PCB.

	NO					Is the voltage on
						IC73	pin No. 16, 0.8V?


Replace IC73 Driver											YES
IC(TD62083AP).
						Is the CN72
						Is the CN72
						connector normal?

YES

Is refrigerator sensor		NO

normal?

			YES
			YES		Open and repair
					the connection.
	Is the temperature
	Is the temperature				NO
	sensor of main PCB				NO
	sensor of main PCB
	Normal?
	Normal?

			YES		Troubleshoot the
			YES		sensor pant and
					sensor pant and
	Open and repair				Exchange PCB.
	the connection.
	the connection.

NO

YES

Is COMP assembly

normal?

NO

Check connector for

contact failure.

YES

Normal

Exchange and repair

COMP. Assembly.

61

Image 62

Samsung RM255BASB, RM255BABB manual If the compressor doesn’t work normally, Check connector for Contact failure

Contents

RM255BARB RM255BASB RM255BABB Authorized Training Center Campuses Important Safety Notice Contents Precautionssafety Warnings Symbols Forbidden Product Specifications This operation instruction covers various models Manual After packing 386lbs Model SpecificationRM25 Electric Parts Specification Sensor Items Specifications Model Dispenser Home BarElectric Components Running Part Code Optional Material SpecificationsPhotograph Operating Instructions & Installation Temperature Control Operation Digital Panel Power cool Operation Power Freeze and Power cool OperationPower Freeze Operation By in inside function irrespective of current setting Able to operate on front panel At Initial Power OnLock Function Cube / Crushed / ICE OFF Selection Function Light Operation Machine Room F-Fan Motor Delay FunctionWater Dispenser Function Load Operation Condition Horizontal position Interval about 880ms Initial OperationReverse rotation CCW Forward rotation CW Ice extraction Maximum torsion point Ice Extraction Function Water Supply FunctionIce-Making Function Water Supply Time Bold numerals indicate relevant ice tray steps Horizontality operation Arctic Zone Defrosting FunctionDefrosting period is fixed to 8 hours 53.6 62.6 Operation Arctic Select Zone FunctionFunction Fresh Select Zone Function Test KEY Function Operation SpecificationTemp .8 ~ 44.6 of the Fridge compartment Operation start Forced Defrosting Function For the R compartment When water supply is finished, in the ice maker test mode Alarm FunctionCommunication Error Display Function Display Function at Panel Operating Instructions & Installation Self-Diagnostics Function Self-Diagnostics Checklist BAD Item Trouble Status Sensor of R ErrorDefrosting CR Sensor On Error CF-FAN ErrorCR-FAN Error Trouble Relevant displays about load status is as follows Load Mode Checklist Load Item Load StatusLoad Condition Display Function Changing to Optional Mode Option Setting Function KEY Function Value Item Temperature Change Table for the Freezer Compartment Change for freezer compartment Temperature Change Table for the Refrigerator Compartment KEY Maker For Ice Maker CR Room Temperature Shift FunctionCase of basic model, the following items cannot be set Flow sensor Disassembly and Reassembly Removing the Front Leg Cover Door Assy 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 Open the Arctic Select Zone Door Zone Close the filter cartridge cover Do not overtighten the compression Note nutWater line must be connected to drinkable water only Door Handle Door Sub PartsControl Panel Door Gasket Tempered Glass Shelf Refrigerator Door Light SwitchRefrigerator Light Plastic Drawers in the Refrigerator Door Bin in Freezer Freezer Door Light SwitchFreezer Compartments Plastic Drawer in Freezer Freezer Light Ice Dispenser Ice MakerTighten the screws 2 of the ice maker support Auger Motor Case Upper Ductwork Partition in the Freezer Screws Pull the upper part of the evaporator cover slightly Evaporator Fan Motor Evaporator in Freezer Ice-Maker Thermistor Freezer ThermistorThermistor cover Screw Water Tank Evaporator cover in the Refrigerator Evaporator Fan Motor in Refrigerator Ductwork Thermistor Thermistor cover Evaporator in FridgeRefrigerator Thermistor Fresh /Arctic Select ZoneTM Thermistor Upper Ductwork Sub-condenser Machine Compartment Electric BoxPCB-MAIN Assy Water Solenoids Removing the Arctic Select Zone Accessories Normal If power is not onStart Check at the Smps PBA Check Main PCB connection If the compressor doesn’t work normally Check connector for Contact failureExchange and repair COMP. Assembly Reference Perform forced defrosting for F R room one at a time If there is a trouble with self-diagnosissensor failure If the ambient temperature sensor has troubleHow To Check Temperature Sensing in the manual Check the soldering on the main PCB for Shorts & breaks If Beep sounds continuously Start Alarm Sounds continuouslyrelated to the buzzerIf Ding-Dong sounds continuously Start Gasket, food etc Buzzer is broken - replace it If the buzzer doesn’t soundMain PCB is normal, buzzer is Normal Replace buzzer or panel PCB It is a care Where the Panel PCB key isn’t selectedIf the panel PCB is not working normally Door Open 0V DC If fan motor doesn’t working normalyDoor S/W Condition These signals will be inputted into Micom Door Open DC If 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/W If Water Drawer doesnt work normally Preliminary Check If Dispenser LED Lamp doesnt light Replace connector Wire and switchReplace connector and wire Failure of panel PCB itself Wiring Diagram Connector Arrangement Main Board Circuitschematic Diagram Conn Ector Arrangement SMP S Board Power BUS A voltage proportional to 68.2 98.993.7 40.0 88.9 38.2 84.2 36.4 79.8 34.6 75.7 32.8 71.8 64.7 107 IC75 Input IC75 Output FAN#18 GND0.8V Comparison in HIGH/LOW Speed Motor Drive Circuit DescriptionsPrinciple of Operation Remarks XAA 13-2 Q & a Problem Possible Causes What To Do Reference Information Problem Possible Causes What To Do Small or hollow cubes Suction Pipe Additional InformationCompressor Sub-condenser Hot Pipe Dryer Step valve Freezer Refrigerator