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Daikin SkyAir RZQ18TAVJU User Manual

Daikin SkyAir RZQ18TAVJU
331 pages
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Servi ce
Manual
Cooling Only 60 Hz
Heat Pump 60 Hz
RZR-TA, RZQ-TA Series
SiUS281811EA

Table of Contents

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Daikin SkyAir RZQ18TAVJU Specifications

General IconGeneral
BrandDaikin
ModelSkyAir RZQ18TAVJU
CategoryAir Conditioner
LanguageEnglish

Summary

Introduction

Safety Cautions

Read safety cautions before repair work and ensure proper operation after work.

Warnings and Cautions Regarding Safety of Workers

Warnings and Cautions Regarding Safety of Users

Specifications

Ceiling Mounted Cassette Type (Round Flow with Sensing)

Ceiling Suspended Type

Wall Mounted Type

Ceiling Mounted Duct Type (High Static Pressure)

Multi Position Air Handling Unit

Part 2 Refrigerant Circuit

Refrigerant Circuit (Piping Diagrams)

Piping diagrams illustrating the refrigerant circuit for various unit models.

RZR18/24TAVJU, RZQ18/24TAVJU

Part 3 Remote Controller

Service Settings Menu, Maintenance Menu

Accessing service settings and maintenance menus for advanced configuration and diagnostics.

Service Settings Menu, Maintenance Menu

BRC1E73

Navigating service settings and maintenance menus using the BRC1E73 wired remote.

Service Settings Menu

Maintenance Menu

Error Display

Wireless Remote Controller

Part 4 Functions and Control

Basic Control

Explains the basic control principles for normal operation, including compressor and fan control.

Protection Control

Details protection functions against high pressure, low pressure, temperature, and inverter issues.

Basic Control

Normal Operation

Details normal operation control for cooling and heating, listing actuators and their functions.

Compressor PI Control

Electronic Expansion Valve PI Control

Special Control

Startup Control in Cooling

Startup Control in Heating

Oil Return Control

Defrost Control

Protection Control

High Pressure Protection Control

Explains high pressure protection to prevent abnormal increases and protect the compressor.

Low Pressure Protection Control

Discharge Pipe Temperature Protection Control

Inverter Protection Control

Freeze-Up Prevention

Heater Control (Except FTQ-TA Models)

Heater Control (FTQ-TA Models)

Auxiliary Electric Heater Control

Part 5 Field Settings and Test Operation

Field Setting from Remote Controller

Guides on how to perform field settings for indoor units using the remote controller.

Test Operation

Procedure for conducting initial test operations after installation to verify system functionality.

Field Setting from Remote Controller

Simplified Remote Controller

List of Field Settings for Indoor Unit

Details of Field Settings for Indoor Unit

Field Settings from Outdoor Unit

Setting Mode and Monitor Mode

Setting Mode 1

Setting Mode 2

Monitor Mode

Setting of Refrigerant Recovery Mode

Setting of Vacuuming Mode

Check Operation

Setting of Auxiliary Heater Control

Setting of Heat Pump Lockout and Emergency Heat Mode

Test Operation

Check Work Prior to Turning Power Supply ON

Pre-operation checks including wiring, ductwork, and refrigerant piping.

Turn Power ON

Error Codes and Corresponding Measures

Part 6 Service Diagnosis

Symptom-based Troubleshooting

Troubleshooting guide based on observed system symptoms and their potential causes.

Troubleshooting by Error Codes

Comprehensive list of error codes, their descriptions, and detailed troubleshooting steps.

Troubleshooting

Precautions for Maintenance

Important precautions for safe and effective maintenance procedures, including electrical safety.

Symptom-based Troubleshooting

Troubleshooting with Remote Controller

Troubleshooting by Error Codes

Error Codes and Description

A table listing all error codes, their operation lamp status, description, and reference page.

Error Codes - Sub Codes

Error Code Indication by Outdoor Unit PCB

External Protection Device Abnormality (Except FTQ-TA)

External Protection Device Abnormality (FTQ-TA Only)

Indoor Unit PCB Abnormality

Drain Level Control System (S1L) Abnormality

Indoor Fan Motor (M1F) Lock, Overload

Indoor Fan Motor Abnormality

Indoor Fan Motor Abnormality (FBQ-P Models)

Blower Motor Not Running

Indoor Fan Motor Status Abnormality

Low Indoor Airflow

Power Supply Voltage Abnormality

Blower Motor Stops for Over/Under Voltage

Electronic Expansion Valve Coil Abnormality, Dust Clogging

Discharge Pipe Temperature Abnormality

Refrigerant Overcharged

Thermistor Abnormality

High Pressure Sensor Abnormality

Low Pressure Sensor Abnormality

PCB (for Inverter Compressor) Abnormality

Radiation Fin Temperature Rise Abnormality

Inverter Compressor Instantaneous Overcurrent

Inverter Compressor Overcurrent

Inverter Compressor Startup Abnormality

Transmission Error (Between Microcomputers on the Outdoor Main PCB)

Inverter Circuit Capacitor High Voltage

Radiation Fin Thermistor Abnormality

Refrigerant Shortage

Check Operation Not Executed

Transmission Error between Indoor Units and Outdoor Units

Transmission Error between Remote Controller and Indoor Unit

Transmission Error between Main and Sub Remote Controllers

Transmission Error between Indoor and Outdoor Units in the Same System

Incorrect Electric Heater Capacity Setting

Transmission Error between Centralized Controller and Indoor Unit

Check

Low Pressure Check

Superheat Operation Check

Power Transistor Check

Refrigerant Overcharge Check

Refrigerant Shortage Check

Vacuuming and Dehydration Procedure

List of Inverter-Related Error Codes

Thermistor Check

Pressure Sensor Check

Broken Wire Check of the Relay Wires

Fan Motor Connector Check

Electronic Expansion Valve Coil Check

Fan Motor Connector Check for FTQ-TA

Outdoor Unit

Indoor Unit

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