Daikin RXYQ10U7Y1B User Manual

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Installation and operation manual

VRV IV+ heat pump

English

Installation and operation manual

VRV IV+ heat pump

RYYQ8U7Y1B*

RYYQ10U7Y1B*

RYYQ12U7Y1B*

RYYQ14U7Y1B*

RYYQ16U7Y1B*

RYYQ18U7Y1B*

RYYQ20U7Y1B*

RYMQ8U7Y1B*

RYMQ10U7Y1B*

RYMQ12U7Y1B*

RYMQ14U7Y1B*

RYMQ16U7Y1B*

RYMQ18U7Y1B*

RYMQ20U7Y1B*

RXYQ8U7Y1B*

RXYQ10U7Y1B*

RXYQ12U7Y1B*

RXYQ14U7Y1B*

RXYQ16U7Y1B*

RXYQ18U7Y1B*

RXYQ20U7Y1B*

Table of Contents

Other manuals for Daikin RXYQ10U7Y1B

Service Manual200 pages

Questions and Answers:

A
Allison HartAug 9, 2025
Why is my Daikin RXYQ10U7Y1B Heat Pump system operating, but the cooling or heating is insufficient?
- G
  gharveyAug 9, 2025
  There are several potential reasons why your Daikin Heat Pump might be running but not cooling or heating effectively. Here are some things you can check: * Ensure that neither the air inlet nor the outlet of the outdoor or indoor unit is blocked by obstacles. Clear any obstructions to allow free airflow. * Make sure the air filter is clean. * Verify that the temperature setting is correct. * Confirm the fan speed setting is appropriate on your user interface. * Check for any open doors or windows and close them to prevent drafts. * Assess if there are too many people in the room or excessive heat sources. * See if direct sunlight is entering the room and use curtains or blinds to block it. * Ensure the airflow angle is properly adjusted.
S
Sandra WrightAug 20, 2025
What to do if my Daikin RXYQ10U7Y1B system does not operate at all?
- B
  Brandon VillaAug 20, 2025
  If your Daikin Heat Pump isn't operating, here are a couple of things you can check: * First, verify that there is no power failure and wait for the power to be restored. The system should restart automatically after power is restored. * Second, check if a fuse has blown or a breaker has been activated. If so, replace the fuse or reset the breaker.
S
Sharon CortezAug 29, 2025
Why does my Daikin Heat Pump go into fan-only operation and then stop when heating or cooling is activated?
- A
  Amy GilesAug 29, 2025
  If your Daikin Heat Pump switches to fan-only mode and then stops when heating or cooling is initiated, check the following: * Ensure that the air inlet or outlet of the outdoor or indoor unit is not blocked. Remove any obstructions to allow free air flow. * Check if the user interface displays a message indicating it's time to clean the air filter.

Daikin RXYQ10U7Y1B Specifications

General

Brand	Daikin
Model	RXYQ10U7Y1B
Category	Heat Pump
Language	English

Summary

Specific Installer Safety Instructions

User Safety Instructions

General Safety Precautions

General safety guidelines for handling and operating the unit.

Safe Operation Guidelines

Specific instructions to ensure safe operation and prevent hazards.

Operation

Maintenance and Service

Refrigerant Information and Handling

Details on refrigerant type, GWP, and safe handling practices.

Troubleshooting

After-Sales Service and Warranty

Unit Installation

Preparing the Installation Site

Requirements for selecting and preparing the installation location.

Mounting the Outdoor Unit

Piping Installation

Preparing Refrigerant Piping

Guidelines for preparing refrigerant piping, including materials and sizes.

Selecting Refrigerant Branch Kits

How to choose appropriate refrigerant branch kits based on capacity.

Connecting Refrigerant Piping

Procedures for connecting the refrigerant piping system.

Connecting Piping to Outdoor Unit

Steps for connecting refrigerant piping to the outdoor unit.

Using Stop Valves and Service Ports

Checking Refrigerant Piping

Procedures for leak testing and vacuum drying the refrigerant piping.

Performing Leak Tests

Detailed steps for executing vacuum and pressure leak tests.

Performing Vacuum Drying

Process for removing moisture from the refrigerant system.

Charging Refrigerant: Precautions

Essential safety warnings before charging refrigerant.

Determining Additional Refrigerant Amount

Method to calculate the required extra refrigerant charge.

Charging Refrigerant Methods

Refrigerant Charging Flow Chart

Visual guide to the refrigerant charging process steps.

To Charge Refrigerant

Automatic Refrigerant Charging

Procedure for performing automatic refrigerant charging.

Manual Refrigerant Charging

Procedure for performing manual refrigerant charging.

Error Codes During Refrigerant Charging

Post-Charging Checks

Electrical Installation

Electrical Compliance and Standards

Safety Device Requirements

Field Wiring Overview

Routing and Fixing Transmission Wiring

Connecting Transmission Wiring

Finishing Transmission Wiring

Routing and Fixing Power Supply Wiring

Connecting Power Supply

Configuration

Making Field Settings

Introduction to configuring system parameters via field settings.

System Modes: Monitoring and Field Settings

Accessing Field Setting Components

Accessing System Modes 1 and 2

Using Mode 1: Monitoring

Using Mode 2: Field Settings

Commissioning

Automatic Leak Detection Function

How to activate and use the automatic leak detection feature.

Commissioning Precautions

Pre-Commissioning Checklist

About the System Test Run

Information regarding the system test run procedure and its purpose.

Performing the System Test Run

Step-by-step guide for executing the system test run.

Hand-over to the User

Troubleshooting: Error Codes

Solving Problems Based on Error Codes

Methods to resolve issues identified by error codes.

Error Codes Overview

A summary of error codes and their general meanings.

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