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Daikin Manuals
Air Conditioner
2MXS40DVMB
Service manual
Daikin 2MXS40DVMB Service Manual
Inverter multi for 2 rooms
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Introduction
Safety Cautions
Part 1 List of Functions
Cooling Only
Heat Pump
Part 2 Specifications
Cooling Only
Indoor Units
Outdoor Units
Heat Pump
Indoor Units
Outdoor Units
Part 3 Printed Circuit Board Connector Wiring Diagram
Printed Circuit Board Connector Wiring Diagram
Wall Mounted Type
Duct Connected Type
Floor / Ceiling Suspended Dual Type
Outdoor Unit
Part 4 Function and Control
Main Functions
Frequency Principle
Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing
Fan Speed Control for Indoor Units
Programme Dry Function
Automatic Operation
Thermostat Control
Night Set Mode
ECONO Mode
Intelligent Eye
HOME LEAVE Operation
Inverter POWERFUL Operation
Other Functions
Function of Main Structural Parts
Main Structural Parts
Function of Thermistor
Control Specification
Mode Hierarchy
Frequency Control
Controls at Mode Changing / Start-Up
Discharge Pipe Control
Input Current Control
Freeze-Up Protection Control
Heating Peak-Cut Control
Fan Control
Liquid Compression Protection Function 2
Defrost Control
Electronic Expansion Valve Control
3.12 Malfunctions
Forced Operation Mode
3.14 Additional Function
Part 5 System Configuration
System Configuration
Instruction
Manual Contents and Reference Page
Safety Precautions
Names of Parts
Preparation before Operation
AUTO · DRY · COOL · HEAT · FAN Operation
Adjusting the Air Flow Direction
POWERFUL Operation
OUTDOOR UNIT SILENT Operation
ECONO Operation
HOME LEAVE Operation
INTELLIGENT EYE Operation
TIMER Operation
Note for Multi System
Care and Cleaning
Troubleshooting
Part 6 Service Diagnosis
Caution for Diagnosis
Problem Symptoms and Measures
Service Check Function
Troubleshooting
Error Codes and Description
Indoor Unit PCB Abnormality
Freeze-Up Protection Control or High Pressure Control
Fan Motor or Related Abnormality
Thermistor or Related Abnormality (Indoor Unit)
Freeze-Up Protection Control
OL Activation (Compressor Overload)
Compressor Lock
DC Fan Lock
Input over Current Detection
Four Way Valve Abnormality
Discharge Pipe Temperature Control
High Pressure Control in Cooling
Position Sensor Abnormality
CT or Related Abnormality
Thermistor or Related Abnormality (Outdoor Unit)
Electrical Box Temperature Rise
Radiation Fin Temperature Rise
Output over Current Detection
Insufficient Gas
Over-Voltage Detection
Anti-Icing Function in Other Rooms / Unspecified Voltage (between Indoor and Outdoor Units)
Outdoor Unit PCB Abnormality or Signal Transmission Circuit Abnormality
Check
How to Check
Part 7 Removal Procedure
Outdoor Unit
Removal of the Panels / Fan Motor
Removal of the PCB
Removal of the Electrical Box
Removal of the Sound Blanket
Removal of the Thermistor
Removal of the Four Way Valve
Removal of the Electronic Expansion Valve
Removal of the Compressor
Part 8 Others
Others
Test Run from the Remote Controller
Jumper Settings
Part 9 Appendix
Piping Diagrams
Indoor Units
Outdoor Units
Wiring Diagrams
Indoor Units
Outdoor Units
Index
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Table of Contents
2
Cooling Only
3
Cooling Only
4
Outdoor Units
5
Outdoor Units
Download this manual
SiBE 12 - 519
Inverter Multi for 2 Rooms
D-Series
[Applied Models]
Inverter Multi : Cooling Only
Inverter Multi : Heat Pump
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Troubleshooting
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Summarization of Contents
Part 1 List of Functions
Cooling Only Functions
Lists functions available for cooling-only operation.
Heat Pump Functions
Lists functions available for heat pump operation.
Part 2 Specifications
Cooling Only Specifications
Detailed technical specifications for cooling-only units.
Heat Pump Specifications
Detailed technical specifications for heat pump units.
Part 3 Printed Circuit Board Connector Wiring Diagram
Indoor Unit Wiring Diagrams
Wiring diagrams for various indoor unit types.
Outdoor Unit Wiring Diagrams
Wiring diagrams for outdoor unit components.
Part 4 Function and Control
Main Operational Functions
Explains primary operational features and functions of the system.
Frequency Principle
Details how compressor frequency controls system capacity.
Airflow Control Features
Describes airflow control mechanisms like flaps and auto-swing.
Fan Speed and Dry Operation Control
Explains fan speed control and programme dry function.
Automatic and Thermostat Control
Details automatic operation and thermostat control mechanisms.
Comfort and Energy Saving Modes
Explains Night Set, ECONO, and INTELLIGENT EYE modes.
Convenience and Performance Modes
Details HOME LEAVE, POWERFUL, and other special operations.
Structural Parts and Control Specification
Explains key components and system control logic.
Main Structural Parts and Thermistor Function
Identifies major components and explains thermistor roles.
System Control Specifications
Details system control logic, mode hierarchy, and frequency control.
Part 5 System Configuration
System Overview and Instructions
General system information, instructions, and setup.
Safety, Parts, and Basic Operations
Safety guidelines, component identification, and basic operations.
Advanced Features and Maintenance
Details airflow adjustment, special modes, timers, multi-system notes, and care.
Troubleshooting Guide
Procedures for resolving common operational issues.
Part 6 Service Diagnosis
Diagnostic Cautions and Symptom Analysis
Warnings for diagnosis and common problem symptoms with measures.
Service Check Functions and Troubleshooting
Using service check functions and detailed troubleshooting steps for errors.
Error Codes and Descriptions
Comprehensive list of error codes and their explanations.
Specific Troubleshooting Procedures
Detailed troubleshooting steps for various component abnormalities.
Diagnostic Check Procedures
Step-by-step guides for performing specific diagnostic checks.
Part 7 Removal Procedure
Outdoor Unit Component Removal
Detailed steps for safely removing outdoor unit parts.
Part 8 Others
Miscellaneous Procedures and Settings
Covers test runs, jumper settings, and sensor adjustments.
Part 9 Appendix
Piping and Wiring Diagrams
Visual schematics for system piping and wiring.
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