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Daikin FTXS25CVMB8 - User Manual

Daikin FTXS25CVMB8
298 pages
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C-Series
[Applied Models]
zInverter Multi : Cooling Only
zInverter Multi : Heat Pump
Si12 - 411A

Table of Contents

Questions and Answers

  • J
    Joshua BrownSep 23, 2025
    Why does mist come out of my Daikin FTXS25CVMB8?
    • D
      Dominic ChanSep 23, 2025
      This happens when the air in the room is cooled into mist by the cold air flow during cooling operation.
  • A
    Amanda MoonAug 23, 2025
    What to do if Daikin Air conditioning operation stops suddenly and the OPERATION lamp flashes?
    • L
      Lance BuckAug 23, 2025
      If the Daikin air conditioning stops suddenly and the OPERATION lamp flashes, clean the air filters or remove any obstacles. Then, turn the breaker OFF, turn it ON again, and try operating the air conditioner with the remote controller.
  • S
    Sabrina GarnerAug 25, 2025
    What to do if water leaks from the indoor unit of Daikin Air conditioning?
    • C
      Christopher BrownAug 26, 2025
      If water leaks from the indoor unit, turn the breaker OFF and call the service shop.
  • J
    John WaltonAug 27, 2025
    Why my Daikin Air conditioning operation does not start soon?
    • J
      jacobgonzalezAug 27, 2025
      You should wait for about 3 minutes.
  • L
    Laura FitzgeraldAug 27, 2025
    Why is my Daikin FTXS25CVMB8 outdoor unit leaking water?
    • V
      valdezrobertAug 27, 2025
      In HEAT mode, the frost on the outdoor unit melts into water or steam during defrost operation. In COOL or DRY mode, moisture in the air condenses into water on the cool surface of the outdoor unit piping and drips.
  • T
    Tracy MillerSep 16, 2025
    Why my Daikin FTXS25CVMB8 does not start immediately?
    • S
      Sharon GriffinSep 16, 2025
      If the ON/OFF button was pressed soon after operation was stopped, or if the mode was reselected, you should wait for about 3 minutes.
  • K
    kelly07Sep 13, 2025
    Why did my Daikin Air conditioning operation stop suddenly, but the OPERATION lamp is on?
    • R
      Roger CohenSep 13, 2025
      The unit automatically resumes operation in about 3 minutes.
  • A
    April FlowersSep 15, 2025
    Why doesn't hot air flow out soon after starting the Daikin Air conditioning heating operation?
    • G
      Gabriel YoderSep 15, 2025
      You should wait for 1 to 4 minutes.
  • D
    Danny KimSep 5, 2025
    Why doesn't hot air come out immediately from my Daikin FTXS25CVMB8 Air Conditioner when heating?
    • M
      Melissa FloresSep 5, 2025
      You should wait for 1 to 4 minutes. The system is designed to start discharging air only after it has reached a certain temperature.
  • B
    Bethany GreenSep 3, 2025
    Why does my Daikin FTXS25CVMB8 Air Conditioner smell?
    • A
      ahunterSep 3, 2025
      The Daikin Air Conditioner may emit odors because smells from the room, furniture, or cigarettes have been absorbed into the unit and are being discharged with the airflow. It is recommended to have the indoor unit cleaned by a technician. Consult the service shop where you bought the air conditioner.

Summary

Part 2 Specifications

1. Specifications

Detailed technical specifications for various components and models of the air conditioner.

Part 3 Printed Circuit Board Connector Wiring Diagram

1. Printed Circuit Board Connector Wiring Diagram

Diagrams illustrating connections on printed circuit boards for system diagnostics and repair.

1.1 Wall Mounted Type 20;25;35 Class

Wiring diagrams for wall-mounted indoor units of the 20/25/35 class.

1.2 Wall Mounted Type 50;60;71 Class

Wiring diagrams for wall-mounted indoor units of the 50/60/71 class.

1.3 Duct Connected Type

Wiring diagrams for duct-connected indoor units.

1.4 Floor; Ceiling Suspended Dual Type

Wiring diagrams for floor/ceiling suspended dual type indoor units.

1.5 Floor Standing Type

Wiring diagrams for floor-standing indoor units.

1.6 Outdoor Units

Wiring diagrams for outdoor units.

Part 4 Function and Control

1. Main Functions

Overview of the primary operational functions of the air conditioning system.

1.1 Frequency Principle

Explanation of the inverter's frequency control principle for compressor speed regulation.

3. Control Specification

Detailed specifications and logic for various control functions within the system.

3.2 Frequency Control

How compressor frequency is determined and controlled based on various parameters.

3.12 Electronic Expansion Valve Control

Detailed explanation of the electronic expansion valve's control functions in various modes.

3.13 Malfunctions

Information on detected malfunctions, including sensor and overload issues.

3.14 Forced Operation Mode

Explanation of forced modes like cooling, heating, and wiring checks for installation.

3.15 Wiring-Error Check

Procedure for checking and correcting wiring errors using the system's diagnostic function.

Part 5 System Configuration

2.2 Safety Precautions

Essential safety precautions to be followed during installation, operation, and maintenance.

2.13 Care and Cleaning

Guidelines for cleaning the indoor unit, outdoor unit, remote controller, and filters.

2.14 Troubleshooting

Common problems and their solutions, including checks for non-starting, stopping, and abnormal operations.

Part 6 Service Diagnosis

1. Caution for Diagnosis

Important cautions and guidelines to follow before performing any diagnostic procedures.

1.1 Troubleshooting with the Operation Lamp

How to interpret the operation lamp's status for troubleshooting and identifying faults.

2. Problem Symptoms and Measures

Lists common problems with corresponding measures for diagnosis and resolution.

3. Service Check Function

Explanation of how to use the service check function for system diagnostics.

4. Code Indication on the Remote Controller

List of error codes displayed on the remote controller and their corresponding problem descriptions.

4.1 Error Codes and Description of Fault

Detailed error codes displayed on the remote controller and the faults they indicate.

5. Troubleshooting

Comprehensive guide to troubleshooting various system malfunctions.

5.1 Indoor Units

Troubleshooting steps for issues related to indoor units.

5.2 Outdoor Units

Troubleshooting steps for issues related to outdoor units.

5.8 Signal Transmission Error (between Indoor and Outdoor Units)

Troubleshooting signal transmission errors between indoor and outdoor units.

5.11 OL Activation (Compressor Overload)

Diagnosing and addressing OL activation or compressor overload issues.

5.12 Compressor Lock

Troubleshooting compressor lock conditions.

5.14 Input Over Current Detection

Troubleshooting input over-current detection errors.

5.22 Output Over Current Detection

Troubleshooting output over-current detection errors.

5.23 Insufficient Gas

Diagnosing and resolving issues related to insufficient refrigerant gas.

Part 7 Removal Procedure

1. Outdoor Unit (80; 90 Class)

Step-by-step guide for removing outer panels and components from 80/90 class outdoor units.

1.10 Removal of Compressor

Procedure for removing the compressor from the outdoor unit.

2. Outdoor Unit (50; 52; 58; 68; 75 Class)

Step-by-step guide for removing components from 50-75 class outdoor units.

Part 9 Appendix

Daikin FTXS25CVMB8 Specifications

General IconGeneral
Cooling Capacity2.5 kW
Heating Capacity3.2 kW
Energy Efficiency Ratio (EER)3.21
Seasonal Energy Efficiency Ratio (SEER)6.1
Power Supply220-240 V, 50 Hz
RefrigerantR32
Weight (Indoor Unit)9 kg
Weight (Outdoor Unit)26 kg
Noise Level (Indoor Unit)19 dB

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