Samsung RB1855SL Service Manual
Bottom-mounted freezer
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Also See for RB1855SL:
- Owner's manual (15 pages) ,
- Owner's manual (15 pages) ,
- Service manual (31 pages)
Related Manuals for Samsung RB1855SL
Summarization of Contents
Important Safety Notices
Service Personnel Safety Warning
Guide for service personnel emphasizing electrical, electronic, and mechanical experience.
Installation and Model Nomenclature
Refrigerator Installation Steps
Steps for safe movement, setup, and initial operation of the refrigerator.
Model Number Breakdown
Explanation of the model number components and their meanings.
Product and Electrical Specifications
Key Product Dimensions and Capacity
Details on net capacity, dimensions, insulation, and weight for various models.
Electrical Ratings and Components
Specifications for voltage, frequency, compressor, evaporator, and other electrical parts.
Interior Views and Dimensions
Shelves and Bins Configuration
Diagrams and instructions for accessing and removing interior shelves and bins.
Refrigerator Dimensional Drawings
Technical drawings showing external dimensions (A, B, C) for different models.
Refrigeration and Airflow Systems
Refrigerant Flow Path
Diagram illustrating the refrigerant circulation route through the system components.
Internal Air Circulation
Diagram showing how cold air is distributed within the refrigerator and freezer compartments.
Mechanical Disassembly Procedures
Control Panel Removal
Instructions for removing the refrigerator's control panel assembly.
Light Component Replacement
Procedure overview for replacing light bulbs in refrigerator and freezer compartments.
Evaporator System Access and Removal
Overview of accessing and removing evaporator covers and components.
Machine Compartment and Electric Box Access
Procedures for accessing and disassembling the machine compartment and electric box.
Refrigerator Operation Functions
Display and Temperature Control
Details on display design and how to control refrigerator and freezer temperatures.
Alarm, Defrost, and Test Functions
Explanation of buzzer alarms, defrost cycles, and test functions for operation.
Power-On and Failure Compensation
Information on initial power-on behavior and power failure compensating functions.
Self-Test and Operating Part Display
Procedures for self-testing and displaying current operating parts status.
Display and Temperature Control Details
Display Design and Temperature Settings
Detailed explanation of the interactive display and temperature selection methods.
Quick Freeze and Quick Cool Functions
Quick Freeze Functionality
How to use the Quick Freeze feature for rapid cooling.
Quick Cool Functionality
How to use the Quick Cool feature for rapid cooling.
Sabbath, Buzzer, and Defrost Operations
Sabbath Mode Operation
How to activate and deactivate the Sabbath mode for special usage.
Buzzer Alarm Functions
Explanation of buzzer sounds for input confirmation, errors, and door alarms.
Defrost Cycle Operation
Details on the automatic defrosting process, timing, and conditions.
Test, Power-On, and Failure Compensation
Test Functionality
How to use test functions for PCB, product, and SVC inspection.
Initial Power-On Behavior
Description of the appliance's actions upon initial power activation.
Power Failure Compensation
How the appliance recovers and operates after a power interruption.
Exhibition Mode and Self-Testing
Exhibition Mode Activation
How to activate and cancel exhibition mode for display purposes.
Self-Test Functionality
Procedures for performing self-tests, including sensor fault detection.
Self-Diagnosis and Operating Status Display
Self-Diagnosis Display Table
Reference table for understanding self-diagnosis fault codes indicated by LEDs.
Displaying Currently Operating Parts
How to interpret LED displays showing the status of operating components.
Temperature Display Logic and Modes
Actual vs. Selected Temperature Display
Explanation of how actual and set temperatures are displayed under various conditions.
Temperature Display During Special Modes
How temperature display changes during Quick Freeze or other special modes.
Door Status and Defrost Display Functions
Door Open Status Display
How the display indicates door open status and temperature changes.
Defrost Display Behavior
How the defrost cycle affects the temperature display and fault indication.
Circuit Descriptions and Schematics
Power and Oscillator Circuits
Details on the power supply circuit and the oscillator for clock generation.
Reset and Door Switch Circuits
Explanation of the reset circuit and how door switches interact with the system.
Temperature Sensor and Button Scan Circuits
Information on temperature sensors and the button scan and display circuit.
Load Operation and Option Functions
Description of load operations (compressor, heaters) and other option functions.
Power Supply and Oscillator Circuit Details
Power Circuit Schematics and Voltages
Detailed schematics and voltage descriptions for the power supply circuits.
Oscillator Circuit Function
Explanation of the oscillator's role in clock generation and time calculation.
Reset and Door Switch Circuit Analysis
Reset Circuit Initialization
How the reset circuit initializes RAM and other parts on the MICOM.
Door Switch Circuit Operation
How door switches detect open/closed states and signal the MICOM.
Temperature Sensor Circuit Analysis
Temperature Sensor Characteristics
Explanation of thermistor characteristics and MICOM input voltage calculation.
Button Scan and Display Circuitry
Button Scan and Display Logic
Details on how buttons are scanned and information is displayed on the panel.
Load Operation Control
Relay Control of Loads
How MICOM signals control compressor, heaters, and fans via relays.
Customizable Option Functions
Temperature and Function Value Adjustment
Adjustable temperature and function values using PCB switching diodes.
Refrigerator Troubleshooting Guide
Power-On Troubleshooting Flowchart
Diagnostic flowchart for issues when the refrigerator does not power on.
Sensor Troubleshooting (Self-Diagnosis)
Steps for diagnosing sensor-related problems using the self-diagnosis feature.
Sensor Fault Diagnosis Procedures
Ambient and Refrigerator Sensor Issues
Troubleshooting steps for ambient and refrigerator temperature sensor issues.
Refrigerator Defrost Sensor Diagnosis
Diagnostic steps for a malfunctioning refrigerator defrost sensor.
Freezer Temperature and Defrost Sensor Issues
Procedures for diagnosing freezer temperature and defrost sensor problems.
Cooling Fan Troubleshooting
Freezer Fan (F-fan) Operation Issues
Diagnosing why the freezer fan (F-fan) is not operating.
Continuous Alarm Troubleshooting
Melody Alarm Troubleshooting
Steps to resolve continuous melody alarms, likely related to door or panel issues.
Beep Alarms and Panel Display Issues
Continuous Beep Troubleshooting
Troubleshooting continuous beeps, likely related to defrost or running modes.
Digital Panel Light Issues
Troubleshooting why the digital control panel is not illuminating.
Illustrated Parts Catalog (Freezer)
Freezer Component Identification Diagram
Diagram showing numbered parts for the freezer section with part names.
Illustrated Parts Catalog (Refrigerator)
Refrigerator Component Identification Diagram
Diagram showing numbered parts for the refrigerator section with part names.
Illustrated Parts Catalog (Door)
Door Component Identification Diagram
Diagram showing numbered parts related to the refrigerator door assembly.
Illustrated Parts Catalog (Cabinet)
Cabinet Component Identification Diagram
Diagram showing numbered parts for the main refrigerator cabinet structure.
Appendix I: Circuit Diagnostics Reference
Cabinet Wire Connector Identification
Pinout details for the wire connector on the refrigerator cabinet door.
Relay Failure Diagnosis
Procedure for checking relay functionality and diagnosing open circuits.
Load and Sensor Checking Procedures
Load Checking Procedures
Methods for checking loads (heaters, fans) for proper operation.
Sensor Checking Procedures
Methods for checking various sensors for proper operation.
Door Switch and Forced Operation Checks
Door Switch (S/W) Testing
How to test door switches for proper functionality and signaling.
Forced Operation and Defrosting
Instructions for initiating forced operation or defrosting modes using the test button.
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