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Daikin Manuals
Air Conditioner
MKS65TVMG
Service manual
Daikin MKS65TVMG Service Manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Introduction
Safety Cautions
Warnings and Cautions Regarding Safety of Workers
Warnings and Cautions Regarding Safety of Users
Icons Used
Revision History
Part 1 General Information
Applicable Models
Functions
Indoor Unit
Outdoor Unit
Part 2 Specifications
Indoor Unit
Wall Mounted Type
LSP Duct Connected Type
MSP Duct Connected Type
Outdoor Unit
Part 3 Printed Circuit Board Connector Wiring Diagram
Indoor Unit
Ctks25/35/50Tvmg, Ctkb25/35/50Tvmg
Ctks60/71Tvmg, Ctkb60Tvmg
Fdks25/35Eavmb, Fdks25/35Cavmb, Fdks50/60Cvmb
Fdmr50/60/71Tvmg
Wireless Remote Controller Receiver
BRC086A2R1 for FDMR Series
Wired Remote Controller
BRC1E63 for FDMR Series
Outdoor Unit
Mks50/65/80Tvmg, Mkb50/65Tvmg
Mks90Tvmg
Adaptor
BRP072C42 Wireless LAN Adaptor
BRP067A42/BRP980B42 Remote Control PC-Board Set
Part 4 Functions and Control
Wall Mounted and LSP Duct Type Functions
Temperature Control
Frequency Principle
Airflow Direction Control
COMFORT AIRFLOW Operation
Fan Speed Control for Indoor Unit
Program Dry Operation
Thermostat Control
NIGHT SET Mode
ECONO Operation
HOME LEAVE Operation
INTELLIGENT EYE Operation
POWERFUL Operation
Clock Setting
WEEKLY TIMER Operation
Other Functions
MSP Duct Type Functions
Drain Pump Control
Thermostat Sensor in Wired Remote Controller
Freeze Prevention Control
Clock and Calendar Setting
Schedule Timer Operation
Other Functions
Thermistor Functions
Control Specification
Mode Hierarchy
Frequency Control
Controls at Mode Changing/Start-Up
Discharge Pipe Temperature Control
Input Current Control
Freeze-Up Protection Control
Outdoor Fan Control
Liquid Compression Protection Function
Low Hz High Pressure Limit
Electronic Expansion Valve Control
Malfunctions
Part 5 Remote Controller
Applicable Remote Controller
Arc466A19
Arc433B76
Brc086A22
Brc1E63
Part 6 Service Diagnosis
General Problem Symptoms and Check Items
Troubleshooting with LED
Indoor Unit
Outdoor Unit
Service Diagnosis
ARC466 Series Wireless Remote Controller
ARC433 Series Wireless Remote Controller
Code Indication on Remote Controller
Indoor Unit
Outdoor Unit
Troubleshooting for Wall Mounted and LSP Duct Type Indoor Unit
Indoor Unit PCB Abnormality
Freeze-Up Protection Control
Indoor Fan Motor or Related Abnormality
Thermistor or Related Abnormality (Indoor Unit)
Signal Transmission Error (between Indoor Unit and Outdoor Unit)
Unspecified Voltage (between Indoor Unit and Outdoor Unit)
Troubleshooting for MSP Duct Type Indoor Unit
Indoor Unit PCB Abnormality
Drain Water Level Control System Abnormality
Indoor Fan Motor or Related Abnormality
Fan PCB Abnormality
Drain System Abnormality
Thermistor or Related Abnormality
Remote Controller Thermistor Abnormality
Signal Transmission Error (between Indoor Unit and Remote Controller)
Signal Transmission Error (between MAIN Remote Controller and SUB Remote Controller)
Field Setting Abnormality
Troubleshooting for Outdoor Unit
Refrigerant Shortage
Low-Voltage Detection or Over-Voltage Detection
Wiring Error Check Unexecuted
Signal Transmission Error (on Outdoor Unit PCB)
Unspecified Voltage (between Indoor Unit and Outdoor Unit)/Anti-Icing Function in Other Rooms
Anti-Icing Control for Indoor Unit
Outdoor Unit PCB Abnormality
OL Activation (Compressor Overload)
Compressor Lock
DC Fan Lock
Input Overcurrent Detection
Discharge Pipe Temperature Control
High Pressure Control in Cooling
System Shutdown Due to Temperature Abnormality in Compressor
Compressor System Sensor Abnormality
Position Sensor Abnormality
CT or Related Abnormality
Thermistor or Related Abnormality (Outdoor Unit)
Electrical Box Temperature Rise
Radiation Fin Temperature Rise
Output Overcurrent Detection
Check
Thermistor Resistance Check
Indoor Fan Motor Connector Check
Hall IC Check
Power Supply Waveform Check
Electronic Expansion Valve Check
Inverter Unit Refrigerant System Check
Inverter Analyzer Check
Rotation Pulse Check on the Outdoor Unit PCB
Installation Condition Check
Discharge Pressure Check
Outdoor Fan System Check
Main Circuit Short Check
Capacitor Voltage Check
Power Module Check
Part 7 Trial Operation and Field Settings
Pump down Operation
Forced Cooling Operation
Wiring Error Check Function
Trial Operation
Indoor Unit
Outdoor Unit
Field Settings
Wall Mounted and LSP Duct Type Indoor Unit
MSP Duct Type Indoor Unit
Outdoor Unit
Silicone Grease on Power Transistor/Diode Bridge
Part 8 Appendix
Piping Diagrams
Indoor Unit
Outdoor Unit
Wiring Diagrams
Indoor Unit
Outdoor Unit
Operation Limit
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Quick Links
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Indoor Unit
2
Outdoor Unit
3
Ctks25/35/50Tvmg, Ctkb25/35/50Tvmg
Download this manual
Service
Manual
Multi-Split Type Air Conditioners
MKS-T, MKB-T Series
SiSG121917E
[Applied Models]
Inverter Multi : Cooling Only
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Table of Contents
Troubleshooting
Troubleshooting with LED
109
Troubleshooting for Wall Mounted and LSP Duct Type Indoor Unit
121
Troubleshooting for MSP Duct Type Indoor Unit
132
Troubleshooting for Outdoor Unit
143
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Summarization of Contents
Part 1 General Information
Applicable Models
Lists all indoor and outdoor unit models covered by this manual.
Functions
Overview of functions for indoor and outdoor units, categorized by type.
Part 2 Specifications
Indoor Unit
Detailed specifications for various indoor unit types, including Wall Mounted, LSP Duct, and MSP Duct.
Outdoor Unit
Detailed specifications for outdoor units, covering models like MKS and MKB series.
Part 3 Printed Circuit Board Connector Wiring Diagram
Indoor Unit
Wiring diagrams for indoor units, covering various types like CTKS, CTKB, FDKS, and FDMR series.
Wireless Remote Controller Receiver
Wiring diagram for wireless remote controller receivers, specifically BRC086A2R1 for FDMR Series.
Wired Remote Controller
Wiring diagram for wired remote controllers, specifically BRC1E63 for FDMR Series.
Outdoor Unit
Wiring diagrams for outdoor units, covering MKS, MKB, and FDMR series models.
Adaptor
Wiring information for accessories like Wireless LAN Adaptor and Remote Control PC-board Set.
Part 4 Functions and Control
Wall Mounted and LSP Duct Type Functions
Details on functions for Wall Mounted and LSP Duct type indoor units.
MSP Duct Type Functions
Details on functions specific to MSP Duct type indoor units.
Thermistor Functions
Explanation of the roles and functions of various thermistors in the system.
Control Specification
Technical specifications and control logic for system operations.
Part 5 Remote Controller
Applicable Remote Controller
Lists remote controllers applicable to different Daikin series.
ARC466A19
Detailed description and operation of the ARC466A19 remote controller.
ARC433B76
Detailed description and operation of the ARC433B76 remote controller.
BRC086A22
Detailed description and operation of the BRC086A22 remote controller.
BRC1E63
Detailed description and operation of the BRC1E63 wired remote controller.
Part 6 Service Diagnosis
General Problem Symptoms and Check Items
Table of common symptoms, check items, details, and reference pages for troubleshooting.
Troubleshooting with LED
Guidance on diagnosing issues based on LED indicators on indoor and outdoor units.
Service Diagnosis
Procedures for diagnosing issues using remote controllers and error codes.
Code Indication on Remote Controller
Lists error codes displayed on remote controllers for indoor and outdoor units.
Troubleshooting for Wall Mounted and LSP Duct Type Indoor Unit
Detailed troubleshooting steps for PCB abnormalities and other issues in specific indoor units.
Troubleshooting for MSP Duct Type Indoor Unit
Detailed troubleshooting steps for PCB, drain system, fan motor, and thermistor issues.
Troubleshooting for Outdoor Unit
Comprehensive troubleshooting guide for outdoor unit errors and malfunctions.
Check
Detailed checks for components like thermistors, connectors, Hall IC, and power modules.
Part 7 Trial Operation and Field Settings
Pump Down Operation
Procedure for pump down operation when relocating or disposing of the unit.
Forced Cooling Operation
Procedure for performing forced cooling operation for testing.
Wiring Error Check Function
Function to automatically check and correct wiring errors in the system.
Trial Operation
Steps for conducting trial operation for indoor and outdoor units.
Field Settings
Configuration settings for indoor units, including address and mode settings.
Silicone Grease on Power Transistor/Diode Bridge
Instructions for applying silicone grease when replacing outdoor unit PCB components.
Part 8 Appendix
Piping Diagrams
Diagrams showing piping connections for indoor and outdoor units.
Wiring Diagrams
Diagrams illustrating electrical wiring for indoor and outdoor units.
Operation Limit
Graphs showing operational limits based on indoor and outdoor temperatures.
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