Daikin RXYQ168TATJU User Manual

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Service

Manual

SiUS341615E

RXYQ72-408TAYDU

RXYQ72-408TATJU

Heat Pump 60 Hz

Table of Contents

Other manuals for Daikin RXYQ168TATJU

Installation Manual47 pages

Questions and Answers:

L
Lance SimmonsAug 5, 2025
Why is my Daikin RXYQ168TATJU Heat Pump not cooling or heating air well?
- O
  Oscar DixonAug 5, 2025
  Several factors can cause your Daikin Heat Pump to not cool or heat air effectively. Check for blocked air inlets or outlets on both the indoor and outdoor units and remove any obstructions. Ensure the air filters are clean. Verify that the outdoor unit isn't enclosed. Set the temperature and airflow rate to the appropriate levels. Adjust the direction of air diffusion. Make sure windows and doors are tightly shut. If direct sunlight is entering the room, use curtains or shades. Finally, ensure the model is appropriate for the number of people in the room.
R
rodriguezwendyAug 9, 2025
How to troubleshoot a Daikin RXYQ168TATJU Heat Pump that does not start?
- M
  Mary JacksonAug 9, 2025
  If your Daikin Heat Pump system isn't starting, there are several potential causes. First, check for blown fuses and replace them if necessary after turning off the power supply. Next, examine the breakers; if any are in the OFF position, turn the power supply ON. Do not turn ON the power supply if any circuit breaker is in a tripped position. If there was a power failure, restart the system after the power is restored. Finally, ensure that all connectors are securely plugged in by turning off the power supply first.
K
Kimberly BurkeAug 13, 2025
What to do if Daikin Heat Pump starts then stops immediately?
- Z
  zhicksAug 13, 2025
  If your Daikin Heat Pump starts and then immediately stops, the issue might be due to a blocked air inlet or outlet on either the indoor or outdoor unit; remove any obstacles. Another potential cause is clogged air filters, so ensure you clean them.
J
Jacob DavisAug 18, 2025
Why does my Daikin RXYQ168TATJU Heat Pump emit odors?
- B
  Bradley DelgadoAug 18, 2025
  If you notice odors coming from your Daikin Heat Pump, it's likely due to odors from the room, cigarettes, or other sources that have been adsorbed inside the indoor unit. Cleaning the inside of the indoor unit should resolve this issue.
S
Steve ClaytonAug 22, 2025
What does 'UNDER CENTRALIZED CONTROL' mean on my Daikin RXYQ168TATJU remote?
- D
  Dana RobertsonAug 22, 2025
  If your Daikin Heat Pump remote controller displays 'UNDER CENTRALIZED CONTROL' and blinks when you press the OPERATION button, it means the system is being controlled by a centralized controller. You should operate the system using the COOL/HEAT centralized remote controller.
R
robertrussellAug 27, 2025
Why does a white mist come out of my Daikin RXYQ168TATJU Heat Pump?
- B
  brockkimberlyAug 27, 2025
  If you see a white mist coming from your Daikin Heat Pump, it's likely due to uneven temperature distribution caused by heavy stains inside the indoor unit. You should clean the inside of the indoor unit.
K
Kevin TorresAug 30, 2025
How to fix a Daikin Heat Pump louver that doesn't close completely?
- D
  David MartinAug 30, 2025
  To address a louver that doesn't fully close in stop mode on your Daikin Heat Pump, turn off the circuit breaker and then turn it back on again.

Daikin RXYQ168TATJU Specifications

General

Model	RXYQ168TATJU
Category	Heat Pump
Type	Inverter
Refrigerant	R410A
Weight	160 kg

Summary

Part 2 Refrigerant Circuit

1. Refrigerant Circuit

Detailed explanation of the refrigerant circuit for outdoor, indoor, and processing units.

2. Functional Parts Layout

Diagrams illustrating the layout of key components within various outdoor unit models.

3. Refrigerant Flow for Each Operation Mode

Flowcharts illustrating refrigerant circulation during different operational modes.

Part 4 Functions and Control

1. Operation Flowchart (Outdoor Unit)

5. Basic Control

6. Protection Control

Details on high pressure, low pressure, and other protection mechanisms.

8. Outline of Control (Indoor Unit)

Part 5 Field Settings

1. Field Setting from Remote Controller

Instructions for performing field settings using wired and wireless remote controllers.

2. Field Settings for Outdoor Unit

Details on function settings, DIP switches, BS buttons, and operational modes for outdoor units.

3. Test Operation

Procedures and checkpoints for conducting system test operations.

Part 6 Service Diagnosis

1. Symptom-based Troubleshooting

Troubleshooting guide based on observed symptoms for indoor units and overall system.

2. Service Check Function

3. Troubleshooting by Error Code

Detailed troubleshooting steps for specific error codes related to indoor and outdoor units.

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