Daikin RXYQ72TATJU User Manual

Daikin RXYQ72TATJU

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Service

Manual

SiUS341615E

RXYQ72-408TAYDU

RXYQ72-408TATJU

Heat Pump 60 Hz

Table of Contents

Other manuals for Daikin RXYQ72TATJU

Installation Manual47 pages

Questions and Answers:

J
Jennifer BarronAug 5, 2025
Why is my Daikin Heat Pump not cooling or heating air well?
- K
  Katelyn Allen PhDAug 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.
B
Brandon HarringtonAug 9, 2025
How to troubleshoot a Daikin Heat Pump that does not start?
- L
  Lance BowmanAug 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.
J
Jonathan ShawAug 13, 2025
What to do if Daikin Heat Pump starts then stops immediately?
- H
  Heather SmithAug 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.
T
Timothy JordanAug 18, 2025
Why does my Daikin RXYQ72TATJU emit odors?
- M
  Michelle Hebert DVMAug 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.
D
davidpetersenAug 22, 2025
What does 'UNDER CENTRALIZED CONTROL' mean on my Daikin RXYQ72TATJU remote?
- P
  Patrick WarnerAug 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.
J
Jennifer RodriguezAug 27, 2025
Why does a white mist come out of my Daikin RXYQ72TATJU Heat Pump?
- K
  Kelly PageAug 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.
L
lisa18Aug 30, 2025
How to fix a Daikin RXYQ72TATJU Heat Pump louver that doesn't close completely?
- C
  colin81Aug 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 RXYQ72TATJU Specifications

General

Model	RXYQ72TATJU
Category	Heat Pump
Refrigerant	R-410A
Refrigerant Type	R-410A
Cooling Capacity	72000 BTU/h
Coefficient of Performance (COP)	3.3

Summary

Part 4 Functions and Control

1. Operation Flowchart (Outdoor Unit)

Provides a visual flowchart of the outdoor unit's operation sequence and control logic.

2. Stop Control

4. Startup Control

Details the startup sequence for cooling and heating operations, including pressure equalization.

5. Basic Control

Covers normal operation aspects like compressor capacity, fan speed, and expansion valve control.

6. Protection Control

Explains various protection mechanisms like high pressure, low pressure, and inverter protection.

8. Outline of Control (Indoor Unit)

Describes the control logic and operation flowcharts for indoor units.

Part 5 Field Settings

1. Field Setting from Remote Controller

2. Field Settings for Outdoor Unit

3. Test Operation

Part 6 Service Diagnosis

1. Symptom-based Troubleshooting

Offers solutions for common indoor unit operational issues based on observed symptoms.

2. Service Check Function

Explains how to use the remote controller's service check functions to diagnose system status.

3. Troubleshooting by Error Code

Provides detailed steps for diagnosing and resolving specific error codes displayed by the system.

4. Check

Guides on performing specific checks such as high pressure, low pressure, and superheat.

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