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Daikin Manuals
Air Conditioner
FTKS20D3VMW
Service manual
Daikin FTKS20D3VMW Service Manual
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Service manual
(228 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Introduction
Safety Cautions
Used Icons
Part 1 List of Functions
List of Functions
Cooling Only Models
Heat Pump Models
Part 2 Specifications
Indoor Units - Cooling Only
Outdoor Units - Cooling Only
Indoor Units - Heat Pump
Outdoor Units - Heat Pump
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
Floor Standing Type
Ceiling Suspended Type
Outdoor Units
Part 4 Function and Control
Main Functions
Frequency Principle
Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing
Operation Starting Control
Fan Speed Control for Indoor Units
Programme Dry Function
Automatic Operation
Thermostat Control
Night Set Mode
ECONO Mode
INTELLIGENT EYE (Wall Mounted Type Only)
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
Compressor Protection Function
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
Malfunctions
Forced Operation Mode
Wiring-Error Check
Additional Function
Part 5 Operation Manual
System Configuration
Operation Instructions
Instruction
FTK(X)S, FTXG, CTXG, FDK(X)S, FLK(X)S Series
Safety Precautions
FVXS Series
Air Flow Selection
FHQ Series
Temperature Setting
Fan Speed Control
Part 6 Service Diagnosis
Caution for Diagnosis
Troubleshooting with Operation Lamp
Problem Symptoms and Measures
Service Check Function
Check Method 1
Check Method 2
Code Indication on the Remote Control
Error Codes and Description of Fault
Troubleshooting
Indoor Units
Outdoor Units
Indoor Unit PCB Abnormality
Freeze-Up Protection Control or High Pressure Control
Fan Motor or Related Abnormality
Thermistor or Related Abnormality (Indoor Unit)
Front Panel Open / Close Fault
Signal Transmission Error (between Indoor and Outdoor Unit)
Unspecified Voltage (between Indoor and Outdoor Units)
Freeze-Up Protection Control
Outdoor Unit PCB Abnormality
OL Activation (Compressor Overload)
Compressor Lock
DC Fan Lock
Input over Current Detection
Discharge Pipe Temperature Control
High Pressure Control in Cooling
Compressor Sensor System Abnormality
Position Sensor Abnormality
CT or Related Abnormality
Thermistor or Related Abnormality (Outdoor Unit)
Sienbe12
Electrical Box Temperature Rise
Radiation Fin Temperature Rise
Output over Current Detection
Insufficient Gas
Low-Voltage Detection or Over-Voltage Detection
Signal Transmission Error (on Outdoor Unit PCB)
Anti-Icing Function in Other Rooms / Unspecified Voltage
(Between Indoor and Outdoor Units)
Anti-Icing Function in Other Rooms / Unspecified Voltage (between Indoor and Outdoor Units)
Check
How to Check
Electronic Expansion Valve Check
Four Way Valve Performance Check
Installation Condition Check
Discharge Pressure Check
Power Supply Waveforms Check
Capacitor Voltage Check
Power Transistor Check
Main Circuit Electrolytic Capacitor Check
Hall IC Check
Part 7 Removal Procedure
Outdoor Unit
Removal of the Panels and Plates
Removal of the Electrical Box
Removal of the PCB
Removal of the Propeller Fan / Fan Motor
Removal of the Sound Blanket
Removal of Electronic Expansion Valve Coil, Four Way Valve Coil and Thermistor
Removal of the Distributor
Removal of the Four Way Valve
Removal of the Compressor
Part 8 Others
Others
Test Run from the Remote Control
Jumper Settings
Part 9 Appendix
Piping Diagrams
Indoor Units
Outdoor Units
Wiring Diagrams
Indoor Units
Outdoor Units
Index
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Quick Links
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Indoor Units - Cooling Only
2
Indoor Units - Heat Pump
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Service
Manual
F-Series
[Applied Models]
! Inverter pair Cooling mode
! Inverter pair Heating mode
SiENBE12-713
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Table of Contents
Troubleshooting
Caution for Diagnosis
237
Troubleshooting
245
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This manual is also suitable for:
Ftks25cavmb
Ftks20cavmb
Fdks35cavmb
Flks35bavmb
Fdks25cavmb
Ftks25d3vmw
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Ftks35cavmb
Fdks50cvmb
Flks50bavmb
Ftks25d3vml
Ftks50fv1b
Fdks60cvmb
Flks60bavmb
Ftks35d3vmw
Ftks60fv1b
Fdks25eavmb
Fvxs25fv1b
Ftks35d3vml
Ftks71fv1b
Fdks35eavmb
Fvxs35fv1b
Ftks50d2v1w
Fvxs50fv1b
Ftks50d2v1l
Fhq35bvv1b
Fhq50bvv1b
Fhq60bvv1b
4mks75f2v1b
Ftxg25ev1bw
Ftxs35d3vmw
Fdxs25cavmb
Flks25bavmb
Flxs25bavmb
Ftxg25ev1bs
Ftxs35d3vml
Ftks20d3vml
Fdxs35cavmb
Flxs35bavmb
Ftxg35ev1bw
Ftxs50d2v1w
Fdxs50cvmb
Flxs50bavmb
Ftxg35ev1bs
Ftxs50d2v1l
Fdxs60cvmb
Flxs60bavmb
Ctxg50ev1bw
Ftxs20cavmb
Fdxs25eavmb
Ctxg50ev1bs
Ftxs25cavmb
Fdxs35eavmb
Ftxs20d3vmw
Ftxs35cavmb
Ftxs20d3vml
Ftxs50fv1b
Ftxs25d3vmw
Ftxs60fv1b
Ftxs25d3vml
Ftxs71fv1b
4mxs68f2v1b
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