Daikin RXYSA4A7Y1B User Manual (English)

Other manuals for Daikin RXYSA4A7Y1B

Installation And Operation Manual48 pages

Installer And User Guide164 pages

Questions and Answers:

C
Chelsea DoyleAug 15, 2025
Why is my Daikin RXYSA4A7Y1B system operating but cooling or heating is insufficient?
- T
  Thomas GriffithAug 16, 2025
  There could be several reasons why your Daikin Air Conditioner isn't cooling or heating sufficiently: * The air inlet or outlet of the outdoor or indoor unit might be blocked. Ensure there are no obstacles and that air can flow freely. * The air filter might be clogged. Please, refer to the "Maintenance" in the indoor unit manual. * The temperature setting may be incorrect. Adjust it as needed. * The fan speed setting may be set too low. Adjust the fan speed on your user interface. * Doors or windows might be open, letting wind in. Close them. * There might be too many occupants in the room, or an excessive heat source. * Direct sunlight might be entering the room. Use curtains or blinds. * The airflow angle might not be proper. Adjust it accordingly.
K
Kyle FitzpatrickAug 18, 2025
What to do if Daikin Air Conditioner system does not operate at all?
- S
  Scott OrtizAug 19, 2025
  If your Daikin Air Conditioner system isn't operating at all: * Check for a power failure and wait until power is restored. Note that if a power failure occurs during operation, the system automatically restarts immediately after power is restored. * Check if a fuse has blown or a breaker is activated. Replace the fuse or reset the breaker if necessary.
M
murrayanthonyAug 21, 2025
Why is my Daikin RXYSA4A7Y1B system operating, but the cooling or heating is insufficient?
- E
  Edward ChandlerAug 21, 2025
  There are several reasons why your Daikin air conditioning system might be running but not cooling or heating effectively. Here are some things you can check: * Make sure that the air inlet or outlet of the outdoor or indoor unit is not blocked by obstacles. Remove any obstructions to ensure free airflow. * Ensure the air filter is not clogged. * Verify the temperature setting. * Check the fan speed setting on your user interface. * Close any open doors or windows to prevent drafts. * Reduce the number of occupants in the room during cooling operation, if possible. * Minimize heat sources in the room. * Use curtains or blinds to block direct sunlight. * Adjust the airflow angle to ensure proper circulation.
P
Pamela FrankAug 25, 2025
What to do if a refrigerant leak occurs in Daikin Air Conditioner (error code / )?
- T
  Timothy ZunigaAug 25, 2025
  If a refrigerant leak occurs in your Daikin Air Conditioner (error code / ), actions will be taken by the system. Do NOT turn OFF the power supply. Notify your installer and report the malfunction code.
K
Kristin RichmondAug 27, 2025
What to do if a safety device frequently actuates in Daikin Air Conditioner?
- W
  William OlsonAug 27, 2025
  If a safety device such as a fuse, a breaker, or an earth leakage breaker frequently actuates, or if the ON/OFF switch does NOT properly work, turn OFF the main power switch.
C
Cameron BakerAug 30, 2025
What to do if a refrigerant leak occurs (error code / ) in my Daikin Air Conditioner?
- J
  Jim MoralesAug 30, 2025
  Notify your installer and report the malfunction code.
D
Dr. Bradley WashingtonSep 2, 2025
What to do if Daikin Air Conditioner goes into fan only operation and stops when heating or cooling is on?
- M
  michelle91Sep 3, 2025
  If your Daikin Air Conditioner goes into fan only operation, but stops as soon as it goes into heating or cooling operation: * Check if the air inlet or outlet of the outdoor or indoor unit is blocked by obstacles. Remove any obstacles to ensure free airflow. * Check if the user interface display shows on the home screen. Refer to the installation and operation manual delivered with the indoor unit.
S
Scott BaileySep 5, 2025
What to do if Daikin RXYSA4A7Y1B Air Conditioner user interface display indicates the unit number, the operation lamp flashes and the malfunction code appears?
- N
  Nicole CampbellSep 5, 2025
  If the user interface display indicates the unit number, the operation lamp flashes, and a malfunction code appears, notify your installer and report the malfunction code.
C
Connor SantosSep 8, 2025
What to do if my Daikin RXYSA4A7Y1B system does not operate at all?
- E
  Ellen YoungSep 8, 2025
  If your Daikin air conditioning system isn't operating, there are a couple of things you can check: * First, make sure there isn't a power failure. Wait for the power to be restored. * Second, check if a fuse has blown or a breaker has tripped. If so, replace the fuse or reset the breaker.
A
Arthur ThompsonSep 12, 2025
What to do if the user interface display of my Daikin RXYSA4A7Y1B indicates a unit number, the operation lamp flashes and a malfunction code appears?
- A
  amber32Sep 12, 2025
  Notify your installer and report the malfunction code.

Daikin RXYSA4A7Y1B Specifications

General

Model	RXYSA4A7Y1B
Category	Air Conditioner
Energy Efficiency Ratio (Cooling)	3.5
Energy Efficiency Ratio (Heating)	3.8
Refrigerant	R32
Power Supply	220-240 V, 50 Hz

Summary

2 General safety precautions

2.2 For the installer

Provides safety instructions specifically for installers.

2.2.2 Installation site

Specifies requirements for the unit's installation location.

2.2.3 Refrigerant

Information and precautions regarding refrigerant handling.

2.2.6 Electrical

Critical safety instructions for electrical installation and wiring.

3 Specific installer safety instructions

Installation site

Specific safety requirements for selecting the installation site.

Connecting the refrigerant piping

Safety precautions for connecting refrigerant piping.

Charging refrigerant

Safety instructions and precautions for charging refrigerant.

Electrical installation

Specific safety instructions for electrical wiring and installation.

Commissioning

Safety precautions to be taken during the commissioning process.

Troubleshooting

Safety precautions to be observed when troubleshooting the system.

3.1 Instructions for equipment using R32 refrigerant

Specific safety instructions for equipment using R32 refrigerant.

3.1.1 Installation space requirements

Details on required installation space and clearances.

3.1.2 System layout requirements

Guidelines for proper system layout and piping.

3.1.3 To determine the charge limitations

Procedure to determine maximum allowable refrigerant charge.

4 User safety instructions

4.2 Instructions for safe operation

Guidelines and precautions for safe operation of the unit.

7 Before operation

8 Operation

8.2 Operating the system

Instructions on how to operate the system and its various modes.

8.2.2 About cooling, heating, fan only, and automatic operation

Details on different operating modes like cooling, heating, and fan.

8.2.4 To operate the system (WITHOUT cool/heat changeover remote control switch)

Step-by-step guide for operating the system without a changeover switch.

8.2.5 To operate the system (WITH cool/heat changeover remote control switch)

Step-by-step guide for operating the system with a changeover switch.

8.3.2 To use the dry program (WITHOUT cool/heat changeover remote control switch)

Procedure to use the dry program without a changeover switch.

8.3.3 To use the dry program (WITH cool/heat changeover remote control switch)

8.5 Setting the master user interface

8.5.2 To designate the master user interface

9 Energy saving and optimum operation

9.1 Available main operation methods

9.2 Available comfort settings

10 Maintenance and service

10.3 About the refrigerant

10.4.2 Recommended maintenance and inspection

10.4.3 Recommended maintenance and inspection cycles

Recommended replacement cycle of wear parts

11 Troubleshooting

11.1 Error codes: Overview

List and explanation of error codes displayed by the system.

11.2 Symptoms that are NOT system malfunctions

17 Unit installation

17.1 Preparing the installation site

17.1.1 Installation site requirements of the outdoor unit

17.1.2 Additional installation site requirements of the outdoor unit in cold climates

17.3 Mounting the outdoor unit

17.3.2 Precautions when mounting the outdoor unit

17.3.3 To provide the installation structure

17.3.5 To provide drainage

17.3.6 To prevent the outdoor unit from falling over

18 Piping installation

18.1 Preparing refrigerant piping

18.1.1 Refrigerant piping requirements

18.1.2 Refrigerant piping material

18.1.3 To select the piping size

18.1.4 To select refrigerant branch kits

18.1.5 Refrigerant piping length and height difference

18.2 Connecting the refrigerant piping

Procedures and precautions for connecting refrigerant piping.

18.2.2 Precautions when connecting the refrigerant piping

Essential safety precautions to observe during piping connection.

18.2.4 To braze the pipe end

18.2.5 Using the stop valve and service port

18.2.7 To connect the refrigerant piping to the outdoor unit

18.2.8 To connect the refrigerant branching kit

18.3 Checking the refrigerant piping

Procedures for checking the refrigerant piping for leaks and dryness.

18.3.2 Checking refrigerant piping: General guidelines

18.3.4 To perform a leak test

Detailed procedure for performing leak tests on the piping.

18.3.5 To perform vacuum drying

Procedure for vacuum drying the refrigerant piping system.

19 Charging refrigerant

19.1 About charging refrigerant

19.2 About the refrigerant

19.3 Precautions when charging refrigerant

Essential precautions and safety measures for refrigerant charging.

19.4 To determine the additional refrigerant amount

Method for calculating the amount of additional refrigerant needed.

19.5 To charge refrigerant

Step-by-step guide for charging refrigerant into the system.

19.6 Error codes when charging refrigerant

List of error codes that may occur during refrigerant charging.

19.8 To check for refrigerant leaks after charging

Procedure for checking for refrigerant leaks after the charging process.

20 Electrical installation

20.1 About connecting the electrical wiring

20.1.1 Precautions when connecting the electrical wiring

Safety precautions to be followed during electrical wiring connection.

20.1.2 Field wiring: Overview

20.1.4 Guidelines when connecting the electrical wiring

20.1.6 Safety device requirements

20.2 To connect the electrical wiring to the outdoor unit

Step-by-step guide for connecting wiring to the outdoor unit.

20.3 To connect the external outputs

21 Finishing the outdoor unit installation

21.1 To insulate the refrigerant piping

21.3 To check the insulation resistance of the compressor

22 Configuration

22.2 Making field settings

22.2.4 To access mode 1 or 2

22.2.5 To use mode 1

22.2.6 To use mode 2

22.2.7 Mode 1: Monitoring settings

22.2.8 Mode 2: Field settings

Detailed explanation of various field settings available in mode 2.

22.3 Energy saving and optimum operation

How to configure settings for energy saving and optimal performance.

22.3.1 Available main operation methods

22.3.2 Available comfort settings

23 Commissioning

23.1 Precautions when commissioning

Safety precautions and warnings before starting commissioning.

23.2 Checklist before commissioning

A comprehensive checklist of items to verify before commissioning.

23.3 Checklist during commissioning

A checklist of tasks to perform during the commissioning process.

23.4 About the test run

23.5 To perform a test run (7-segments display)

Step-by-step guide for performing a test run using the 7-segment display.

23.6 Correcting after abnormal completion of the test run

Procedures for addressing and correcting abnormalities found during test runs.

24 Hand-over to the user

25 Maintenance and service

25.2 Maintenance safety precautions

Essential safety precautions to follow during maintenance work.

25.2.1 To prevent electrical hazards

Specific measures to prevent electrical hazards during maintenance.

25.3 Checklist for yearly maintenance of the outdoor unit

25.4 About service mode operation

25.4.1 To use vacuum mode

25.4.2 To recover refrigerant

Procedure for recovering refrigerant using a recovery unit.

26 Troubleshooting

26.2 Precautions when troubleshooting

Safety precautions to observe while troubleshooting the system.

26.3 Solving problems based on error codes

Guidance on resolving issues based on displayed error codes.

26.3.1 Error codes: Overview

A list and explanation of error codes and their causes.

26.4 Refrigerant leak detection system

Information on the refrigerant leak detection system and its operation.

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Daikin RXYSA4A7Y1B User Manual

Table of Contents

Other manuals for Daikin RXYSA4A7Y1B

Questions and Answers:

Daikin RXYSA4A7Y1B Specifications

Summary

2 General safety precautions

2.2 For the installer

2.2.2 Installation site

2.2.3 Refrigerant

2.2.6 Electrical

3 Specific installer safety instructions

Installation site

Connecting the refrigerant piping

Charging refrigerant

Electrical installation

Commissioning

Troubleshooting

3.1 Instructions for equipment using R32 refrigerant

3.1.1 Installation space requirements

3.1.2 System layout requirements

3.1.3 To determine the charge limitations

4 User safety instructions

4.2 Instructions for safe operation

7 Before operation

8 Operation

8.2 Operating the system

8.2.2 About cooling, heating, fan only, and automatic operation

8.2.4 To operate the system (WITHOUT cool/heat changeover remote control switch)

8.2.5 To operate the system (WITH cool/heat changeover remote control switch)

8.3.2 To use the dry program (WITHOUT cool/heat changeover remote control switch)

8.3.3 To use the dry program (WITH cool/heat changeover remote control switch)

8.5 Setting the master user interface

8.5.2 To designate the master user interface

9 Energy saving and optimum operation

9.1 Available main operation methods

9.2 Available comfort settings

10 Maintenance and service

10.3 About the refrigerant

10.4.2 Recommended maintenance and inspection

10.4.3 Recommended maintenance and inspection cycles

Recommended replacement cycle of wear parts

11 Troubleshooting

11.1 Error codes: Overview

11.2 Symptoms that are NOT system malfunctions

17 Unit installation

17.1 Preparing the installation site

17.1.1 Installation site requirements of the outdoor unit

17.1.2 Additional installation site requirements of the outdoor unit in cold climates

17.3 Mounting the outdoor unit

17.3.2 Precautions when mounting the outdoor unit

17.3.3 To provide the installation structure

17.3.5 To provide drainage

17.3.6 To prevent the outdoor unit from falling over

18 Piping installation

18.1 Preparing refrigerant piping

18.1.1 Refrigerant piping requirements

18.1.2 Refrigerant piping material

18.1.3 To select the piping size

18.1.4 To select refrigerant branch kits

18.1.5 Refrigerant piping length and height difference

18.2 Connecting the refrigerant piping

18.2.2 Precautions when connecting the refrigerant piping

18.2.4 To braze the pipe end

18.2.5 Using the stop valve and service port

18.2.7 To connect the refrigerant piping to the outdoor unit

18.2.8 To connect the refrigerant branching kit

18.3 Checking the refrigerant piping

18.3.2 Checking refrigerant piping: General guidelines

18.3.4 To perform a leak test

18.3.5 To perform vacuum drying

19 Charging refrigerant

19.1 About charging refrigerant

19.2 About the refrigerant

19.3 Precautions when charging refrigerant

19.4 To determine the additional refrigerant amount

19.5 To charge refrigerant

19.6 Error codes when charging refrigerant

19.8 To check for refrigerant leaks after charging

20 Electrical installation