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Samsung RB1855SW Service Manual

Bottom-mounted freezer.
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SAMSUNG Home Appliance Service
Bottom-Mounted Freezer



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   Summary of Contents for Samsung RB1855SW

  • Page 1

    SAMSUNG Home Appliance Service Model: Bottom-Mounted Freezer RB1855SW SAM0051...

  • Page 2

    SAMSUNG ELECTRONICS AMERICA, INC. Technical Service Guide Copyright ⓒ2004 All rights reserved. This service guide may not be reproduced in whole or in part in any form without written permission from the SAMSUNG ELECTRONICS Company.

  • Page 3: Table Of Contents

    Contents 1. Installation ······································ 2. Nomenclature ···································· 3. Product Specifications ······························· 4. Electrical part specifications & standard ····················· 5. Warranty information ································ 6. Interior Views and Dimensions ··························· 7. Refrigeration Cycle and Cool Air Circulation Route ··············· 8. Mechanical Disassembly ······························...

  • Page 4: Installation

    1. INSTALLATION 1) To protect refrigerator in movement Use padded hand truck from side only. 2) Remove all protective tape and pad from the refrigerators. Connect power cord. Adjust the clearance between the doors. 3) Temperature controls ard preset in the factory for recommended settings.

  • Page 5: Product Specifications

    3. PRODUCT SPECIFICATIONS Model RB1855SW RB1855SL RB2055SW RB2055SL Type BMF 2 Door Temperature control Electronic control Total 18.7 18.7 20.4 20.4 Net Capacity Freezer Refrigerator 12.8 12.8 13.9 13.9 Net dimension 32.3 28.3 69.9 32.3 30.3 69.9 Cabinet insulation CYCLO-PENTANE...

  • Page 6

    ELECTRICAL PART SPECIFICATIONS & STANDARD ITEM STANDARD Type Temperature Selection ON(℉) OFF(℉) –14℉ –12.0℉ –16.0℉ Freezer F-Sensor –2℉ 0℉ –4℉ 8℉ 10℉ 6℉ Type Temperature Selection ON(℉) OFF(℉) 34℉ 36℉ 32℉ Refrigerator R-Sensor 40℉ 42℉ 38℉ 46℉ 48℉ 44℉ First Defrost Cycle 4hr ±10min (Concurrent Defrost of F and R) Defrosting...

  • Page 7: Warranty Information


  • Page 8: Interior Views And Dimensions

    6. Interior Views and Dimensions 6-1) Shelves and Bins • Deli drawer • Door Bin Pull it out to disassemble. Push it up and slide it out to disassemble. Light • • • • Gallon Bin • Glass Shelf • Pull it out until its stop Tilt down and slide it out.

  • Page 9

    Interior Views and Dimensions 6-2) Dimensions of Refrigerator (Inches) MODEL RB1855 24.3 28.3 57.8 RB2055 26.3 30.3 59.8...

  • Page 10: Refrigeration Cycle And Cool Air Circulation Route

    7. Refrigeration Cycle and Cool Air Circulation Route 7-1) Refrigerant Route in Refrigeration cycle Compressor → Sub condenser → Cluster pipe → Hot pipe → Dryer → Capillary tube → R-Evaporator → F-Evaporator → Accumulator → Suction pipe → Compressor...

  • Page 11

    Refrigeration Cycle and Cool Air Circulation Route 7-2) Cool Air Circulation...

  • Page 12: Mechanical Disassembly

    8. Mechanical Disassembly Refrigerator Disassembly Control Panel ········································ Refrigerator Light ······································ Freezer Light ········································ Evaporator Cover in the Refrigerator ·························· Evaporator Cover in the Freezer ····························· Evaporator in the Freezer ································· Evaporator in the Refrigerator ······························ Machine Compartment & Electric Box ··························...

  • Page 13: Control Panel

    Mechanical Disassembly Control Panel 1. Remove the screws. 2. Pull out the control panel. 3. Disconnect the wire connector.

  • Page 14: Refrigerator Light

    Mechanical Disassembly Always unplug the power cord before replacing the refrigerator lamp. There is the danger of electric shock. Warning Refrigerator Light Freezer Light 1. Remove the cover by pressing the bottom tab. 1. Remove the screw. 2. Remove the lamp cover by unlocking the tabs and pulling the cover down.

  • Page 15: Evaporator Cover In The Refrigerator

    Mechanical Disassembly Evaporator Cover in the Refrigerator 6. Disconnect the wire connector. 1. Remove all shelves and drawers from the refrigerator. 2. Pull out the screw caps with a small flat-blade screwdriver. 3. Remove 6 Phillps screws from the cover. ■Ductwork of the evaporator fan assembly.

  • Page 16: Evaporator Cover In The Freezer

    Mechanical Disassembly Evaporator Cover in Freezer 5. Disconnect wire connector from the top-left 1. Remove all drawers from the freezer. corner. 2. Remove screws (2) from the support rail. 6. Remove 2 screws from the rear cover of the freezer evaporator and unlock the tabs to remove it.

  • Page 17: Evaporator In The Freezer

    Mechanical Disassembly Evaporator in Refrigerator Evaporator in Freezer Evaporator is located in the bottom of refrigerator. Evaporator is located in the bottom of freezer to 1. Take off the ductwork in refrigerator. produce cold air driven across the evaporator 2. Disconnect the wire connector.(Heater and coils.

  • Page 18: Machine Compartment & Electric Box

    Mechanical Disassembly Machine Compartment & & Electric Box 3. Mechine compartment assembly Make sure the power cord is unplugged before replacing any electric components. Warning 1. Unplug the power cord. 4. Disassemble the electric box cover after removing the screws with a Phillips screwdriver. 2.

  • Page 19: Operation Function

    9. Operation Function 9-1) Digital Panel ··································· 9-2) Temperature Control Function ························· 9-3) Power Freeze and Power cool Functions ·················· 9-4) Sound Function ································· 9-5) Defrost Function ································· 9-6) Forced Operation Function ··························· 9-7) Power failure compensating Function ···················· 9-8) Exhibition Function ·······························...

  • Page 20: 9-1) Digital Panel

    Operation Function 9-1) Digital Panel 9-2) Temperature Control Function When the system power is initally engaged, the default set temperature are -2℉ for the freezer and 38℉ for the set refrigerator, respectively. The numbers shown on the digital display panel stand for the actual compartments temperatures.

  • Page 21: 9-4) Sound Function

    Operation Function 3) When you select Power Freeze and Power Cool together Each function works at the same time. The COMP and F-FAN run continuously and the R-FAN runs until 25℉ in the refrigerator. 4) Initial Power-On 4-1) When the freezer and the refrigerator temperatures are higher than 14℉ and 50℉, respectively, if Power Freeze is selected, then the R-FAN will be off.

  • Page 22: 9-6) Forced Operation Function

    Operation Function 9-6) Forced Operation function (Power cool key + Refrigerator. Temp 8sec.) This function enables a pull-down mode, a defrost mode for the refrigerator only, a defrost ● mode rigerator at the same time, and a cancellation of this function. Press Power Freeze and Refrigerator Temp.

  • Page 23: 9-7) Power Failure Compensating Function

    Operation Function 9-7) Power failure compensating function 1) When the freezer temperature is lower than 50℉, all functions on the display panel will be restored. 2) When the freezer temperature is higher than 50℉, all functions will be initialized. (2℉ for the freezer, 38℉ for the refrigerator, and Cubed for the Ice Type) 9-8) Exhibition Function This function is for a display purpose on the floor of show room or store.

  • Page 24: 9-10) Component Load Operation Function

    Operation Function Table 1. Display table of self diagnosis. Item LED Display Details Remarks REFRIGERATOR -58℉ •Suspected to be below • Connector contact failure R-sensor 150℉ • Short-circuit •Suspected to be over R-defroster REFRIGERATOR -58℉ • Connector contact failure •Suspected to be below sensor •...

  • Page 25: 9-11) C-fan Motor Delay Function

    Operation Function FREEZER:10digit FREEZER: 1digit REFRIGERATOR:10digit REFRIGERATOR: 1digit Table 2. Display table of the presently operating parts. Content Display LED Operation Remark R-fan Include R-fan activation a : REFRIGERATOR 1 digit R-defrost heater Defrost heater activation c : REFRIGERATOR 1 digit Initial start mode Initial power is activated ON d : REFRIGERATOR 1 digit...

  • Page 26: Circuit Descriptions

    13. Safety Instructions on Service ●Unplug the refrigerator before making any repair or any replacement. Avoid the electric shock. ●Use the rated components on the replacement. Check the correct model number, rated voltage, rated current, operating temperature and so ●On repair, be sure that the wires such as harness are bundled tightly and are not exposed by water.

  • Page 27: Appendix Ⅰ Ⅰ (reference For Circuit Diagnostics)

    Appendix Ⅰ Ⅰ (Reference for circuit diagnostics) Ref.1) Wire connector on the cabinet door. Ref. 2) How to check relay failure * Disconnect the wire connector from the main PCB CN70, 71 and measure the following items. 1. Measure the coil bisection of the relay and check whether it works.

  • Page 28

    Ref. 3) Check a load * Unplug the power cord and disconnect the connector from the main PCB CN70, 71 and measure the following: 1. Measure resistance between the terminals and check for malfunctioning of a load and wire connection. Measurement Evaluation of mea- Subordinate...

  • Page 29

    Ref. 5) Check Door S/W (Refrigerator Bulb) 1. Open the door and check if the freezer lamp turns on. 2. Press the Door S/W and check if the freezer lamp turns off. 3. Close the freezer door and repeat 1 and 2 for refrigerator door.

  • Page 30

    Ref. 7) Table of temperature sensor according to resistance and voltage conversion. * Voltage conversion table depends on H/W structure of MICOM port input voltage. Sensor Short : Micom 0V. Sensor Open : Micom 5V. ※ Sensor partial pressure resistance 10KΩ Temp.(℉...

  • Page 31: Appendix Ⅱ Ⅱ (circuit Diagram)

    11. PCB Circuit Diagram...

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