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Daikin FTX12AXVJU - Service Manual

Daikin FTX12AXVJU
119 pages
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Servic e
Manual
DAMA-SM-21-001
Service Manual / Inverter Split Wall Mounted Type FTK(X) Series DAMA-SM-21-001
Inverter Split
Wall Mounted Type FTK(X) Series
[Applied Models]
z
Inverter Split : Cooling Unit
Heat Pump Unit

Table of Contents

Other manuals for Daikin FTX12AXVJU

Questions and Answers

  • J
    jessicaweberAug 9, 2025
    What to do if my Daikin FTX12AXVJU Air Conditioner unit does not operate?
    • M
      Melissa JensenAug 9, 2025
      If your Daikin Air Conditioner unit isn't working, here's what you can check: * First, ensure there isn't a power failure and that the fuse is in good condition; replace the fuse if necessary. * Next, verify the power plug is securely connected. * Also, check the delay timer settings to ensure they are correctly configured.
  • P
    Pamela WrightAug 15, 2025
    How to fix Daikin Air Conditioner compressor that won't start immediately?
    • J
      John BushAug 15, 2025
      If the compressor in your Daikin Air Conditioner does not start immediately after turning on the unit, allow 3 to 4 minutes for it to begin operating.
  • D
    Debbie BellAug 20, 2025
    How to increase airflow in my Daikin Air Conditioner?
    • M
      Mary HillAug 20, 2025
      If the airflow from your Daikin Air Conditioner is too low, try the following: 1. Clean or replace the air filter, as a dirty filter can significantly reduce airflow. 2. Ensure all doors and windows are closed to maintain optimal cooling efficiency. 3. Check for any obstructions blocking the air suction and discharge areas. 4. Increase the regulated temperature to improve airflow.
  • E
    edwardsmatthewAug 27, 2025
    Why is there condensation on my Daikin Air Conditioner's front grille?
    • B
      Benjamin DickersonAug 27, 2025
      Condensation on the front grille of your Daikin Air Conditioner's indoor unit can occur due to air humidity after prolonged operation or if the set temperature is too low. To address this, increase the temperature setting and operate the unit at a high fan speed.
  • D
    Daniel CollinsSep 1, 2025
    How to get rid of bad odor from Daikin FTX12AXVJU?
    • J
      Joseph ZunigaSep 2, 2025
      If your Daikin Air Conditioner's discharge airflow has a bad odor, it may be due to particles from smoke, cigarettes, or perfumes adhered to the coil. Cleaning the coil should remove these odor-causing particles.

Summary

Safety Cautions

Warnings and Cautions Regarding Safety of Workers

Details warnings and cautions for workers regarding safety precautions during repair.

Warnings and Cautions Regarding Safety of Users

Outlines safety warnings and cautions for users of the air conditioner.

Part 1 General Information

Part 2 Specifications

Specification Data

Provides detailed technical specifications for the air conditioning units.

Part 3 Functions and Control

1. Main Functions

Details the primary functions of the air conditioner, such as temperature and frequency control.

3. Control Specification

Outlines the control logic and specifications for various operations.

Automatic Operation

Frequency Control

Discharge Pipe Temperature Control

Input Current Control

Freeze-up Protection Control

Heating Peak-cut Control

Liquid Compression Protection Function

Defrost Control

Electronic Expansion Valve Control

High Discharge Pipe Temperature Control

Discharge Pipe Thermistor Disconnection Control

Target Discharge Pipe Temperature Control

Malfunctions

Detection of Overcurrent and Overload

Details detection of overcurrent and overload to protect the inverter.

Part 5 Service Diagnosis

1. General Problem Symptoms and Check Items

Lists common symptoms and initial check items for troubleshooting.

2. Troubleshooting with LED

Details troubleshooting based on LED indicators on the indoor and outdoor units.

4. Troubleshooting

Provides a comprehensive guide to troubleshooting various error codes and issues.

5. Actuator Check

Details checks for various actuators like thermistors, valves, and motors.

Error Codes and Description

Indoor Unit PCB Abnormality

Indoor Fan Motor (DC Motor) or Related Abnormality

Thermistor or Related Abnormality (Indoor Unit)

Low-voltage Detection or Over-voltage Detection

Signal Transmission Error (Between Indoor Unit and Outdoor Unit)

Installation error

Outdoor Unit PCB Abnormality

OL Activation (Compressor Overload)

Compressor Lock

DC Fan Lock

Input Overcurrent Detection

High Pressure Control in Cooling

Compressor System Sensor Abnormality

Position Sensor Abnormality

Thermistor or Related Abnormality (Outdoor Unit)

Electrical Box Temperature Rise

Radiation Fin Temperature Rise

Output Overcurrent Detection

Four Way Valve Abnormality

Actuator Check

Thermistor Resistance Check

Guides on checking thermistor resistance using a multimeter.

Electronic Expansion Valve Check

Explains how to check the electronic expansion valve (EV).

Part 6 Trial Operation and Field Settings

Part 7 Appendix

Daikin FTX12AXVJU Specifications

General IconGeneral
BrandDaikin
ModelFTX12AXVJU
CategoryAir Conditioner
LanguageEnglish

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