Samsung MH068FXEA Service Manual
Samsung MH068FXEA Service Manual

Samsung MH068FXEA Service Manual

Multi air conditioner

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SERVICE
AIR CONDITIONER
For more information, Please access to our service web site (http://itself.sec.samsung.co.kr)
MULTI AIR CONDITIONER
INDOOR UNIT
FREE JOINT FIXED
MH020FPEA
MH14VP2-07
MH023FPEA
MH16VP2-07
MH026FPEA
MH16VP2-09
MH035FPEA
MH18VP2-09
MH052FPEA
MH19VP2-07
MH052FPEA1 MH19VP2-12
MH023FWEA MH30VP2-09
MH026FWEA MH30VP2-12
MH035FWEA MH14VW2-07
MH052FWEA MH16VW2-07
MH026FKEA
MH16VW2-09
MH035FKEA
MH18VW2-09
MH052FDEA
MH19VW2-07
MH023FEEA
MH19VW2-12
MH026FEEA
MH30VW2-09
MH035FEEA
MH30VW2-12
Manual
THE FEATURE OF PRODUCT
I
Multi Inverter(Free Joint Multi) Series
– Variable Indoor Unit Combination
(Free Joint Multi : MH040FXEA2/MH052FXEA2/
MH068FXEA4/MH080FXEA4)
– Multi Inverter(Free Joint Multi) Series delivers
comfort to 2~4 rooms with a Single Outdoor Unit
I
BLDC Inverter Compressor
– Energy Saving Function
I
Convenient Installation
I
Premium Indoor Unit

OUTDOOR UNIT

FREE JOINT FIXED
MH040FXEA2 MH14VP2X
MH052FXEA2 MH16VP2X
MH068FXEA4 MH18VP2X
MH080FXEA4 MH19VP2X
MH30VP2X
MH14VW2X
MH16VW2X
MH18VW2X
MH19VW2X
MH30VW2X

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Table of Contents
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Summarization of Contents

Precautions
General Safety and Installation Guidelines
Covers safe installation, power, operation, disposal, and general handling precautions.
Product Specifications
Key Features and Unit Identification
Details the main features and identifies components of indoor and outdoor units.
Detailed Model Specifications
Lists technical specifications for various indoor and outdoor models, including performance and dimensions.
Comparative Model Specifications
Compares features and specifications across different models to aid in selection.
Accessory and Option Kits
Lists available accessories and optional components for indoor and outdoor units.
Alignment and Adjustments
Error Code Diagnosis and Troubleshooting
Explains error codes for indoor/outdoor units and provides check methods for diagnosis.
Setting Operational Options
Details how to configure unit settings using the remote control and PCB switches.
Disassembly and Reassembly Procedures
Indoor Unit Disassembly Guide
Step-by-step instructions for disassembling various indoor unit models for maintenance.
Outdoor Unit Disassembly Guide
Provides instructions for safely disassembling outdoor units for repair or component access.
Exploded Views and Parts Identification
Indoor Unit Exploded Views and Parts List
Visual breakdown of indoor units with a comprehensive list of parts and their codes.
Outdoor Unit Exploded Views and Parts List
Exploded diagrams and parts lists for outdoor unit components, aiding in identification.
Electrical Component Lists
Indoor Unit PCB Component Details
Lists electrical parts found on indoor unit main and sub PCBs, including specifications.
Outdoor Unit PCB Component Details
Details components on outdoor unit PCBs, useful for electrical troubleshooting and repair.
Wiring Diagrams
Indoor Unit Wiring Schematics
Illustrates the electrical connections and pathways for indoor units.
Outdoor Unit Wiring Schematics
Provides detailed wiring diagrams for outdoor units, essential for electrical diagnostics.
Schematic Diagrams
Indoor Unit Electronic Schematics
Detailed electronic circuit diagrams for indoor unit PCBs, crucial for component-level analysis.
Outdoor Unit Electronic Schematics
Comprehensive schematic diagrams of outdoor unit electronics, aiding in complex troubleshooting.
Circuit Descriptions and Refrigeration Cycles
Outdoor Unit PCB Circuit Explanations
Explains the functionality of various circuit blocks within the outdoor unit's PCB.
Refrigeration Cycle Diagrams
Visual representation of refrigerant flow and system operation under different configurations.
PCB Layout Diagrams
Indoor Unit PCB Component Layouts
Shows the physical arrangement and identification of components on indoor unit PCBs.
Outdoor Unit PCB Component Layouts
Diagrams illustrating the placement of components on outdoor unit PCBs for easy reference.
Operating Instructions
Remote Control Operation Guide
Explains the features and functions of the wireless remote control for unit operation.
Basic and Advanced Unit Functions
Details how to use various operating modes and special functions of the air conditioner.
Troubleshooting Guide
Common Operational Issues and Checks
Lists common problems, initial checks, and expected behaviors for troubleshooting.
Testing Procedures and Error Code Interpretation
Provides methods for system testing and understanding error codes for fault diagnosis.
Major Component Fault Diagnosis
Offers diagnostic steps and resistance values for identifying failures in key parts.
PCB Inspection and Replacement Cautions
Guidelines for inspecting printed circuit boards and necessary precautions during part replacement.
System Block Diagram
Overall System Architecture Overview
Illustrates the interconnectedness of all system components, including indoor, outdoor, and control units.
Installation Reference Guide
Selecting Optimal Installation Locations
Recommends suitable placement for indoor, outdoor, and remote control units for optimal performance.
Piping, Refrigerant, and Torque Procedures
Covers essential steps for pipe connection, refrigerant handling, and tightening specifications.
Refrigerant Adjustment Guidelines
Details how to adjust refrigerant levels based on piping length and operating conditions.
Technical Reference Information
Fundamentals of Air Circulation and Freshness
Explains basic principles of air supply and factors influencing indoor environment quality.
Performance Pressure Graphs
Provides technical data and pressure graphs for cooling and heating performance under various conditions.

Table of Contents