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Daikin REYQ144PTJU - User Manual

Daikin REYQ144PTJU
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System air conditioner
OPERATION MANUAL
MODEL
RXYQ72PYDN
RXYQ96PYDN
RXYQ120PYDN
RXYQ144PYDN
RXYQ168PYDN
RXYQ192PYDN
RXYQ216PYDN
RXYQ240PYDN
RXYQ72PTJU
RXYQ96PTJU
RXYQ120PTJU
RXYQ144PTJU
RXYQ168PTJU
RXYQ192PTJU
RXYQ216PTJU
RXYQ240PTJU
Read these instructions carefully before installation.
Keep this manual in a handy place for future reference.
This manual should be left with the equipment owner.
English
Français
Español
REYQ72PYDN
REYQ96PYDN
REYQ120PYDN
REYQ144PYDN
REYQ168PYDN
REYQ192PYDN
REYQ216PYDN
REYQ240PYDN
REYQ72PTJU
REYQ96PTJU
REYQ120PTJU
REYQ144PTJU
REYQ168PTJU
REYQ192PTJU
REYQ216PTJU
REYQ240PTJU
00_CV_3P215731-1D.fm Page 1 Wednesday, February 6, 2008 11:34 AM

Table of Contents

Other manuals for Daikin REYQ144PTJU

Preview: Service Manual
Service Manual567 pages

Questions and Answers

  • O
    ohallAug 8, 2025
    Why is my Daikin Air Conditioner not cooling or heating enough?
    • A
      Alexander RodriguezAug 8, 2025
      If your Daikin Air Conditioner isn't cooling or heating sufficiently, several factors could be at play. First, ensure that neither the air inlet nor outlet of the indoor or outdoor unit is obstructed; remove any blockages to improve ventilation. Next, verify if the remote controller indicates it's time to clean the air filter. Also, review your temperature and fan speed settings on the remote. Other potential issues include open doors or windows, too many people in the room, excessive heat sources, direct sunlight, or an improper airflow angle. Check each of these elements to optimize performance.
  • E
    elizabeth02Aug 16, 2025
    Why does my Daikin Air Conditioner stop soon after starting?
    • Q
      qmatthewsAug 16, 2025
      If your Daikin Air Conditioner stops shortly after starting, examine the outdoor and indoor units to ensure that the air inlets and outlets are free from obstructions. Remove any obstacles to ensure proper ventilation. Also, check the remote controller display for an indication to clean the air filter and proceed to clean the air filter.
  • W
    Whitney NelsonAug 22, 2025
    What to do if my Daikin Air Conditioner system does not operate at all?
    • K
      khendersonAug 22, 2025
      If your Daikin Air Conditioner system isn't starting, first check for a power failure and wait for the power to be restored. If there is no power failure, check if a fuse has blown and turn off the power supply. Another potential issue is a blown breaker.
  • N
    Natalie MaddoxAug 30, 2025
    What to do if my Daikin Air Conditioner displays 'TEST' and a malfunction code?
    • R
      raymondtranAug 30, 2025
      If the display on your Daikin Air Conditioner shows 'TEST', the unit number, and the TEST operation lamp are flashing, and a malfunction code appears, you should notify your Daikin dealer and report the malfunction code.

Summary

1. Safety Considerations

Safety Symbols and Warnings

Explanation of danger, warning, caution, and note symbols for safe operation.

Installation Location Guidelines

Criteria for selecting an appropriate installation location for the air conditioner.

Electrical Work Requirements

Essential electrical work and grounding procedures for safe operation.

Operating Sound Considerations

Guidelines for minimizing noise impact on the surroundings.

2. Specifications

3. Before Operation

Outside Unit and Component Overview

Overview of outside units and identification of main system components.

4. Remote Controller and Cool;Heat Selector

5. Operation Range

6. Operation Procedures

6-1 Cooling, Heating, Automatic, and Fan Only Operation

Procedure for selecting cooling, heating, automatic, or fan-only modes for the system.

6-1 Heating Operation Details: Defrost and Hot Start

Explanation of defrost and hot start functions during heating operation.

6-2 Program Dry Operation

Guide to using the program dry function for dehumidification.

6-3 Adjusting Air Flow Direction

How to adjust the air flow direction for optimal comfort and air distribution.

6-4 Timer Programming

6-5 Master Remote Controller Setup

7. Optimum Operation

8. Seasonal Maintenance

8-1 Beginning of Season Maintenance

Checks and cleaning required at the start of the operating season.

8-2 End of Season Maintenance

Procedures for preparing the unit for shutdown at the end of the season.

9. Symptoms Not Indicating Troubles

9-1 System Does Not Operate or Stops Intermittently

Troubleshooting for system startup issues and intermittent stopping.

9-3 Cool;Heat Mode Change Issues

Resolving problems with switching between cooling and heating modes.

9-4, 9-5, 9-6 Fan Operation Issues

Addressing fan-related problems like speed, direction, or lack of cooling/heating.

9-7 Airflow and Unit Appearance

Understanding white mist, dust emission, and odors from the unit.

9-8 Noise and Fan Rotation

Identifying normal noises and reasons for the outdoor fan not rotating.

9-12 to 9-15 Stopped Unit Behavior

Explaining unit behavior after stopping, like warm exterior or hot air emission.

9-16 Insufficient Cooling Performance

Troubleshooting steps for reduced cooling effectiveness.

10. Troubleshooting

10-1 System Fails to Operate

Steps to diagnose and resolve complete system failure.

10-2 System Stops Shortly After Starting

Troubleshooting for units that stop soon after beginning operation.

10-3 Insufficient Cooling or Heating

Addressing issues where cooling or heating output is inadequate.

10-4 Remote Controller Display Issues

Resolving problems indicated by remote controller displays like filter cleaning alerts.

10-5 Operational Settings Checks

Verifying temperature, fan speed, and environmental factors affecting performance.

After-Sales Service and Warranty

Maintenance and Parts Information

Details on maintenance recommendations, part availability, and inspection cycles.

Unit Moving and Disposal

Guidance on relocating and responsibly discarding the air conditioner unit.

Warranty Details and Service Contact

Information about the product warranty period and how to contact for service.

Daikin REYQ144PTJU Specifications

General IconGeneral
BrandDaikin
ModelREYQ144PTJU
CategoryHeat Pump
LanguageEnglish

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