Daikin RXYSA4A7Y1B Installer And User Guide

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Installer and user reference guide

VRV 5-S system air conditioner

RXYSA4A7V1B

RXYSA5A7V1B

RXYSA6A7V1B

RXYSA4A7Y1B

RXYSA5A7Y1B

RXYSA6A7Y1B

Table of Contents

Default Chapter2
- Table of Contents2
1 About this Document6
- Meaning of Warnings and Symbols6
2 General Safety Precautions8
- For the Installer8
3 Specific Installer Safety Instructions16
- Instructions for Equipment Using R32 Refrigerant18
For the User21
4 User Safety Instructions22
- General22
- Instructions for Safe Operation23
5 About the System27
- System Layout27
6 User Interface28
7 Operation29
- Before Operation29
- Operation Range30
- Operating the System30
- Using the Dry Program32
- Adjusting the Air Flow Direction34
  - About the Air Flow Flap34
- Setting the Master User Interface35
  - About Setting the Master User Interface35
  - To Designate the Master User Interface35
8 Energy Saving and Optimum Operation36
- Available Main Operation Methods37
- Available Comfort Settings37
9 Maintenance and Service38
- After a Long Stop Period39
- Before a Long Stop Period39
- About the Refrigerant39
- After-Sales Service and Warranty40
10 Troubleshooting43
- Error Codes: Overview45
- Symptoms that Are NOT System Malfunctions47
11 Relocation50
12 Disposal51
13 Technical Data52
- Eco Design Requirements52
For the Installer53
14 About the Box54
- Overview: about the Box54
- Outdoor Unit55
15 About the Units and Options57
- Identification57
  - Identification Label: Outdoor Unit57
- About the Outdoor Unit57
- System Layout58
- Combining Units and Options58
16 Special Requirements for R32 Units60
- Installation Space Requirements60
- System Layout Requirements60
- To Determine the Charge Limit65
17 Unit Installation72
- Preparing the Installation Site72
  - Installation Site Requirements of the Outdoor Unit72
  - Additional Installation Site Requirements of the Outdoor Unit in Cold Climates75
- Opening and Closing the Unit76
- Mounting the Outdoor Unit77
18 Piping Installation81
- Preparing Refrigerant Piping81
- Connecting the Refrigerant Piping85
- Checking the Refrigerant Piping92
19 Charging Refrigerant96
- Precautions When Charging Refrigerant96
- About Charging Refrigerant97
- About the Refrigerant97
- To Determine the Additional Refrigerant Amount99
- To Charge Refrigerant100
- Error Codes When Charging Refrigerant102
- To Fix the Fluorinated Greenhouse Gases Label102
- To Check for Refrigerant Leaks after Charging103
- To Insulate the Refrigerant Piping103
20 Electrical Installation106
- About Connecting the Electrical Wiring106
- To Connect the Electrical Wiring to the Outdoor Unit112
- To Connect the External Outputs115
- To Connect the Cool/Heat Selector Switch Option116
- To Check the Insulation Resistance of the Compressor117
21 Finishing the Outdoor Unit Installation119
- To Insulate the Refrigerant Piping119
22 Configuration121
- Overview: Configuration121
- Making Field Settings122
- Energy Saving and Optimum Operation133
23 Commissioning139
- Precautions When Commissioning139
- Checklist before Commissioning140
- Checklist During Commissioning141
- About the Test Run141
- To Perform a Test Run (7-Segment Display)141
- Correcting after Abnormal Completion of the Test Run142
24 Hand-Over to the User143
25 Maintenance and Service144
- Maintenance Safety Precautions144
  - To Prevent Electrical Hazards145
- Checklist for Yearly Maintenance of the Outdoor Unit146
- About Service Mode Operation146
  - To Use Vacuum Mode146
  - To Recover Refrigerant146
26 Troubleshooting147
- Overview: Troubleshooting147
- Precautions When Troubleshooting147
- Solving Problems Based on Error Codes147
  - Error Codes: Overview148
- Refrigerant Leak Detection System150
27 Disposal153
28 Technical Data154
- Service Space: Outdoor Unit155
- Piping Diagram: Outdoor Unit157
- Wiring Diagram: Outdoor Unit158
29 Glossary162

Other manuals for Daikin RXYSA4A7Y1B

Installer And User Reference Guide164 pages

Installation And Operation Manual48 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

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