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REYQ-AATJA
Service manual
Daikin REYQ-AATJA Service Manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Part 1 General Information
Table of Contents
Model Names
Outdoor Unit
Branch Selector Unit
Indoor Unit
Air Treatment Equipment
External Appearance
Outdoor Unit
Branch Selector Unit
Indoor Unit
Air Treatment Equipment
Combination of Outdoor Units
Capacity Range
Connection Ratio
Outdoor Unit Combinations
Limitation of Capacity Index for Heat Recovery
Specifications
Reyq-Aatja
Reyq-Aayda
Refrigerant Circuit Part 2
Outdoor Unit
Refrigerant Circuit (Piping Diagrams)
Refrigerant Circuit Part
Branch Selector Unit
Indoor Unit
Outdoor-Air Processing Unit
Functional Parts Layout
Reyq72Aa
Reyq96/120Aa
Reyq144/168Aa
Reyq192/216/240Aa
Refrigerant Flow for each Operation Mode
Reyq72Aa
Reyq96/120/144/168Aa
Reyq192/216/240Aa
Part 3 Remote Controller
Applicable Models
Brc1E73
Names and Functions
Brc1H71W
Wireless Remote Controller
Brc1E73
Main/Sub Setting
Brc1H71W
When Wireless Remote Controller Is Used Together
Address Setting for Wireless Remote Controller
Brc1E73
Centralized Control Group No. Setting
Brc1H71W
Wireless Remote Controller
Group No. Setting Example
Brc1E73
Service Settings Menu, Maintenance Menu
Administrator Menu, Installer Menu
Brc1H71W
Part 4 Functions and Control
Operation Flowchart
Stop Control
Stop Due to Error
Sub Unit Stops During Master Unit Control
When System Is in Stop Control
Crankcase Heater Control
Restart Standby
Standby Control
Startup Control
Startup Control in Cooling
Startup Control in Heating
Basic Control
Normal Control
Compressor PI Control
Compressor Step Control
Electronic Expansion Valve PI Control
Step Control of Outdoor Fans
Heat Exchanger Control
High Pressure Protection Control
Protection Control
Low Pressure Protection Control
Discharge Pipe Protection Control
Inverter Protection Control
Pump down Residual Operation
Special Control
Oil Return Operation
Defrost Operation
Outdoor Unit Rotation
Cooling/Heating Mode Switching
Backup Operation
Demand Operation
Heating Operation Prohibition
Other Control
Operation Flowchart
Outline of Control (Indoor Unit)
Set Temperature and Control Target Temperature
Remote Controller Thermistor
Thermostat Control
Drain Pump Control
Control of Electronic Expansion Valve
Freeze-Up Prevention Control
List of Swing Flap Operations
Hot Start Control (in Heating Operation Only)
Louver Control for Preventing Ceiling Dirt
Heater Control (Except FXTQ-TA Models)
Heater Control (FXTQ-TA Models)
Gas Furnace Control (CXTQ-TA Models)
3-Step Thermostat Processing (FXTQ-TA Models)
Fan Control (Heater Residual) (FXTQ-TA Models)
Interlocked with External Equipment (FXTQ-TA and CXTQ-TA Models)
Part 5 Field Settings and Test Operation
Field Settings for Indoor Unit
Field Settings with Remote Controller
List of Field Settings for Indoor Unit
Applicable Field Settings
Details of Field Settings for Indoor Unit
Gas Furnace Set up
List of Field Settings for Outdoor-Air Processing Unit
Setting of Operation Control Mode
DIP Switch Setting When Mounting a Spare PCB
Field Setting from Outdoor Unit
Accessing the BS Buttons on the PCB
Operating the BS Buttons and DIP Switches on the PCB
Connecting the PC Configurator to the Outdoor Unit
Monitoring Function and Field Settings
Cool/Heat Mode Changeover
Night-Time Low Noise Operation and Demand Operation
Energy Saving and Optimum Operation
Field Settings for Branch Selector Unit
Field Settings for Single Branch Selector Unit
Field Settings for Multi Branch Selector Unit (Standard Series)
Field Settings for Multi Branch Selector Unit (Flex Series)
How to Check Miswiring for Multi Branch Selector Unit
Checkpoints
Checks before Test Operation
Test Operation
Gas Furnace Test Operation
Part 6 Service Diagnosis
Indoor Unit Overall
Symptom-Based Troubleshooting
Gas Furnace Lockout Reset
With Gas Furnace
With Infrared Presence/Floor Sensor
Brc1E73
Troubleshooting with Remote Controller
Brc1H71W
Wireless Remote Controller
Error Codes and Descriptions
Troubleshooting by Error Code
Error Codes (Sub Codes)
Prediction Codes
External Protection Device Abnormality
Indoor Unit Control PCB Abnormality
Drain Level Control System Abnormality
Indoor Fan Motor Lock, Overload
Indoor Fan Motor Abnormality
Overload/Overcurrent/Lock of Indoor Fan Motor
Blower Motor Not Running
Indoor Fan Motor Status Abnormality
Low Indoor Airflow
Swing Flap Motor Abnormality
Power Supply Voltage Abnormality
Blower Motor Stops for Over/Under Voltage
Electronic Expansion Valve Coil Abnormality, Dust Clogging
Gas Furnace Abnormality
Drain Level above Limit
Self-Cleaning Decoration Panel Abnormality
Capacity Determination Device Abnormality
Transmission Abnormality between Indoor Unit Control PCB and Fan PCB
Blower Motor Communication Error
Climate Talk Communication Error
Thermistor Abnormality
Combination Error between Indoor Unit Control PCB and Fan PCB
Blower Motor HP Mismatch
Indoor Blower Does Not Have Required Parameters to Function
Remote Sensor Abnormality
Humidity Sensor System Abnormality
Infrared Presence/Floor Sensor Error
Remote Controller Thermistor Abnormality
Outdoor Unit Main/Sub PCB Abnormality
Detection of Ground Leakage by Leak Detection Circuit
Missing of Ground Leakage Detection Core
Activation of High Pressure Switch
Activation of Low Pressure Sensor
Compressor Motor Lock
Compressor Damage Alarm
Outdoor Fan Motor Abnormality
Electronic Expansion Valve Coil Abnormality or Sub PCB Momentary Overcurrent
Four Way Valve Abnormality (Intermediate Stop)
Four Way Valve Abnormality (Not Switching)
Opposite Air Conditioning Alarm
Discharge Pipe Temperature Abnormality
Wet Alarm
Refrigerant Overcharged
Branch Selector Unit Electronic Expansion Valve Abnormality
Thermistor Abnormality
Harness Abnormality (between Outdoor Unit Main PCB and Inverter PCB)
Outdoor Fan PCB Abnormality
High Pressure Sensor Abnormality
Low Pressure Sensor Abnormality
Inverter PCB Abnormality
Momentary Power Failure During Test Operation
Inverter Radiation Fin Temperature Rise Abnormality
Compressor Instantaneous Overcurrent
Compressor Overcurrent
Compressor Startup Abnormality
Transmission Error between Inverter PCB and Outdoor Unit Main PCB
Power Supply Voltage Imbalance
Inverter Radiation Fin Temperature Abnormality
Field Setting Abnormality after Replacing Outdoor Unit Main PCB or Combination of PCB Abnormality
Refrigerant Shortage
Reverse Phase, Open Phase, Power Supply Frequency Issue
Power Supply Insufficient or Instantaneous Abnormality
Check Operation Not Executed
Transmission Error between Indoor Units and Outdoor Units, Open Phase in Power Supply Wiring
Transmission Error between Remote Controller and Indoor Unit
Transmission Error between Outdoor Units
Transmission Error between Main and Sub Remote Controllers
Transmission Error between Indoor Units and Outdoor Units in the same System
Improper Combination of Indoor, Branch Selector and Outdoor Units
Incorrect Gas Furnace Connecting Number
Incorrect Electric Heater Capacity Setting
Address Duplication of Centralized Controller
Transmission Error between Centralized Controller and Indoor Unit
System Not Set yet
System Abnormality, Refrigerant System Address Undefined
Climate Talk Communication System Combination Error (before Initial Setting for Communication Completes)
Climate Talk Communication System Combination Error (after Initial Setting for Communication Completes)
Check
High Pressure Check
Low Pressure Check
Superheat Operation Check
Power Transistor Check
Refrigerant Overcharge Check
Refrigerant Shortage Check
Vacuuming and Dehydration Procedure
Thermistor Check
Pressure Sensor Check
Broken Wire Check of the Relay Wires
Fan Motor Connector Check (Power Supply Cable)
Fan Motor Connector Check (Signal Cable)
Electronic Expansion Valve Coil Check
Fan Motor Connector Check for FXTQ-TA
Outdoor Unit
Wiring Diagrams
Branch Selector Unit
Indoor Unit
Air Treatment Equipment
Electrical Component Box Removal
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SiUS372201EA
Service
Manual
REYQ-AATJA, 208/230 V
REYQ-AAYDA, 460 V
Heat Recovery 60 Hz
Table of
Contents
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1
2
3
4
5
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Chapters
Part 1 General Information
16
Refrigerant Circuit Part 2
45
Part 3 Remote Controller
99
Part 4 Functions and Control
129
Part 5 Field Settings and Test Operation
191
Part 6 Service Diagnosis
271
Table of Contents
Troubleshooting
Symptom-based Troubleshooting
274
Troubleshooting with Remote Controller
279
Troubleshooting by Error Code
282
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