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Daikin RZQSG125L8Y1B User Manual

Daikin RZQSG125L8Y1B
215 pages
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Service Manual
GQI-Eco Series
Heat Pump R-410A 50Hz
Smart RZQG71~140L9V1
RZQG71~125L9Y1 / RZQG140LY1
Classic RZQSG71L3V1 / RZQSG100~140L9V1
RZQSG100~125L8Y1 / RZQSG140LY1
ESIE15-13B

Table of Contents

Other manuals for Daikin RZQSG125L8Y1B

Questions and Answers:

Daikin RZQSG125L8Y1B Specifications

General IconGeneral
BrandDaikin
ModelRZQSG125L8Y1B
CategoryAir Conditioner
LanguageEnglish

Summary

1. Introduction

1.1 Version log

Details revisions and updates to the service manual.

1.2 Safety Cautions

Provides critical safety warnings for repair and handling.

1.3 Used Icons

Explains the meaning of icons used in the manual for clarity.

1.4 Preface

Expresses gratitude and introduces the scope of the service manual.

1. Model Names of Indoor / Outdoor Units

2. Outlook Outdoor Units

Shows visual appearance of different outdoor unit models.

3. Operating range

Displays cooling and heating operating temperature limits for Smart and Classic models.

1. Wired Remote Controller

1.3 MAIN/SUB Setting when Using 2 Remote Controllers

Explains setting up MAIN/SUB configuration for dual remote controllers.

1.4 Centralized Control Group No. Setting

Details how to set group numbers for centralized control.

2. Wireless Remote Controller

2.1 Applicable Models

Lists applicable models for the wireless remote controller.

2.2 Names and Functions

Describes the names and functions of buttons and displays on the wireless remote.

2.3 MAIN/SUB Setting

Guides the setting of MAIN/SUB addresses for wireless remote receivers.

3. Service Mode

3.1 BRC1D528

Explains service data display for BRC1D528 remote controller.

3.1.2 Service Setting

Details service settings like forced fan ON and unit number change.

4. Inspection Mode

4.1 BRC1D528

Describes how to check indoor unit model codes and test operation status.

4.2 BRC1E52/53

Explains how to check for malfunctions or warnings on the BRC1E52/53 screen.

1. Function of Main Components and Thermistors

2. Operation Flow Chart

Illustrates the operational logic for Cooling/Dry and Heating modes.

3. Function Details

Explains indoor and outdoor unit functions like thermostat control, fan speed, and swing patterns.

1. Test Operation

1.1 Pre-run Checks

Lists essential checks for electrical wiring, refrigerant piping, and indoor units.

1.2 Remote Controller Confirmation

Guides on confirming remote controller settings for BRC1D and BRC1E series.

1.3 Test Run

Details the steps to perform a test run in cooling mode.

1.4 Precautions Regarding Test Run

Highlights precautions during test runs, including stop valve checks and panel installation.

1.5 Failure Diagnosis at the Moment of First Installation

Lists abnormalities to check during initial installation failure diagnosis.

2. Field Setting from Remote Controller

2.1 Wired Remote Controller

Details field setting procedures for BRC1D528 and BRC1E52 models.

2.2 Wireless Remote Controller

Explains how to set mode, first code, and second code for wireless remote.

2.3 Settings Contents and Code No. for Indoor Units

Provides a table of settings and code numbers for indoor units.

2.4 Overview of the Field Setting on the Outdoor Units

Summarizes field settings available for outdoor units via remote controller.

2.5 Quiet (Low Noise) Operation

Explains how to activate automatic and external quiet operation modes.

2.6 I-Demand Function

Describes how to set power consumption limitations using terminal X801M.

2.7 Setting for Low Humidity Application

Details settings for low humidity applications to increase unit capacity.

3. Field Setting from Outdoor Unit PCB

3.1 Location of DIP Switch and BS Button

Identifies the locations of DIP switches and BS buttons on the outdoor unit PCB.

3.2 Field Setting by BS Buttons

Explains how to use BS buttons for setting modes and checking status.

1. Maintenance Inspection

1.1 Overview

Lists key inspection points for indoor and outdoor units and operating conditions.

2. Symptom-based Troubleshooting

2.1 Overview

Provides a summary of symptoms and corresponding troubleshooting pages.

2.2 Equipment does not Operate

Lists supposed causes and troubleshooting steps for non-operation.

2.3 Indoor Unit Fan Operates, but Compressor does not Operate

Explains supposed causes and troubleshooting for fan running but compressor not operating.

2.4 Cooling / Heating Operation Starts but Stops Immediately

Details supposed causes and troubleshooting for intermittent operation.

2.5 After Unit Shuts Down, It cannot be Restarted for a While

Lists supposed causes and troubleshooting for restart delays.

2.6 Equipment Operates but does not Provide Cooling

Covers supposed causes and troubleshooting for lack of cooling.

2.7 Equipment Operates but does not Provide Heating

Lists supposed causes and troubleshooting for lack of heating.

2.8 Equipment Discharges White Mist

Explains causes and troubleshooting for white mist discharge.

2.9 Equipment Produces Loud Noise or Vibration

Lists causes and troubleshooting steps for noise and vibration issues.

2.10 Equipment Discharges Dust

Explains causes and troubleshooting for dust discharge.

2.11 Remote Controller LCD Displays "88"

Provides troubleshooting for "88" display on the remote controller.

2.12 Swing Flap does not Operate

Lists supposed causes and troubleshooting for non-operation of swing flaps.

3. Troubleshooting by LED Indications

3.1 Troubleshooting by LED on the Indoor Unit

Guides on troubleshooting indoor unit errors based on LED indications.

3.2 Troubleshooting by LED on Outdoor Unit PCB

Details troubleshooting outdoor unit errors using LED indications on the PCB.

4. Troubleshooting by Remote Controller

4.1 Procedure of Self-diagnosis by Remote Controller

Explains how to perform self-diagnosis using the wired remote controller.

4.2 Error Codes and Description

Provides a comprehensive list of error codes and their descriptions with reference pages.

4.3 Safety Devices

Lists safety devices like high pressure switches and fuses for outdoor and indoor units.

4.4 Indoor Unit PCB Abnormality

Details troubleshooting steps for indoor unit PCB abnormalities.

4.5 Drain Water Level System Abnormality

Guides troubleshooting for drain water level issues.

4.6 Indoor Unit Fan Motor Abnormality

Explains troubleshooting for indoor unit fan motor problems.

4.7 Capacity Setting Abnormality

Details troubleshooting for defective capacity setting.

4.8 Transmission Error (between Indoor Unit PCB and Adaptor PCB)

Guides troubleshooting for transmission errors between indoor PCB and adaptor.

4.9 Thermistor Abnormality

Provides steps to troubleshoot thermistor errors.

4.10 Humidity Sensor System Abnormality

Details troubleshooting for humidity sensor system issues.

4.11 Malfunction of Motion Sensor / Floor Temperature Sensor

Guides troubleshooting for motion or floor temperature sensor malfunctions.

4.12 Remote Controller Thermistor Abnormality

Explains troubleshooting for remote controller thermistor issues.

4.13 Outdoor Unit PCB Abnormality

Guides troubleshooting for outdoor unit PCB abnormalities.

4.14 High Pressure Abnormality (Detected by the High Pressure Switch)

Guides troubleshooting for high pressure abnormalities detected by the switch.

4.15 Actuation of Pressure Sensor

Explains troubleshooting for pressure sensor actuation issues.

4.16 Compressor Motor Lock

Details troubleshooting steps for compressor motor lock.

4.17 Outdoor Unit Fan Motor Abnormality

Guides troubleshooting for outdoor unit fan motor abnormalities.

4.18 Electronic Expansion Valve Abnormality

Explains troubleshooting for electronic expansion valve issues.

4.19 Discharge Pipe Temperature Control

Details troubleshooting for discharge pipe temperature control errors.

4.20 High Pressure Switch System Abnormality

Guides troubleshooting for high pressure switch system abnormalities.

4.21 Low Pressure Switch System Abnormality

Explains troubleshooting for low pressure switch system abnormalities.

4.22 Thermistor System Abnormality

Details troubleshooting for general thermistor system abnormalities.

4.23 Outdoor Unit PCB Abnormality

Guides troubleshooting for outdoor unit PCB abnormalities.

4.24 Radiation Fin Temperature Rise

Explains troubleshooting for radiation fin temperature rise.

4.25 Output Overcurrent Detection

Details troubleshooting for output overcurrent detection.

4.26 Electronic Thermal (Time Lag)

Guides troubleshooting for electronic thermal (time lag) errors.

4.27 Stall Prevention (Time Lag)

Explains troubleshooting for stall prevention (time lag) errors.

4.28 Transmission System Abnormality (between Control and Inverter PCB)

Details troubleshooting for transmission system abnormalities between control and inverter PCB.

4.29 Open Phase or Power Supply Voltage Imbalance

Guides troubleshooting for open phase or voltage imbalance.

4.30 Defective Capacity Setting

Explains troubleshooting for defective capacity setting.

4.31 Refrigerant Shortage (Alert)

Details troubleshooting for refrigerant shortage alerts.

4.32 Refrigerant Shortage (Error)

Guides troubleshooting for refrigerant shortage errors.

4.33 Power Supply Voltage Abnormality

Explains troubleshooting for power supply voltage abnormalities.

4.34 Transmission Error between Indoor and Outdoor Unit

Details troubleshooting for transmission errors between indoor and outdoor units.

4.35 Transmission Error Between Remote Controller and Indoor Unit

Guides troubleshooting for transmission errors between remote and indoor units.

4.36 Transmission Error between MAIN Remote Controller and SUB Remote Controller

Explains troubleshooting for transmission errors between main and sub remote controllers.

4.37 Field Setting Switch Abnormality

Details troubleshooting for field setting switch abnormalities.

4.38 "UC" Address Duplication of Centralized Controller

Guides troubleshooting for centralized controller address duplication.

4.39 Transmission Error Between Centralized Controller and Indoor Unit

Explains troubleshooting for transmission errors between centralized controller and indoor unit.

4.40 Transmission Error between Indoor and Outdoor Unit / Piping and Wiring Mismatch / Refrigerant Shortage

Details troubleshooting for transmission errors, piping/wiring issues, and refrigerant shortage.

4.41 Check

Provides instructions for checking thermistors and their resistance values.

1. Piping Diagrams

1.1 RZQG-L9V1

Provides piping diagrams specifically for the RZQG-L9V1 model.

2. Wiring Diagrams

2.1 Outdoor Unit

Presents wiring diagrams for the outdoor unit.

3. Thermodynamic characteristic of R-410A

4. Removing the switchbox

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