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General| Brand | Daikin |
|---|---|
| Model | REYQ-XA |
| Category | Temperature Controller |
| Language | English |
Safety guidelines for personnel performing maintenance and inspection.
Safety guidelines for end-users to prevent injury and equipment damage.
Lists indoor unit models with their capacity ranges and specifications.
Lists outdoor unit models (REYQ-XATJU, REYQ-XAYDU, REYQ-XAYCU) with capacities.
Details of outdoor-air processing units and energy recovery ventilators.
Lists single and multi branch selector units with their specifications.
Illustrations and names of various indoor unit types.
Illustrations of single, double, and triple outdoor units.
Illustrations of outdoor-air processing units and energy recovery ventilators.
Illustrations of single and multi branch selector units.
Table detailing system capacity, number of units, modules, and piping kits.
Explains the connection ratio formula and provides maximum connection ratios.
Table showing combinations of outdoor units and connectable indoor units.
Specifies limitations for capacity index for single and multi branch selector units.
Provides technical specifications for REYQ-XATJU, including cooling/heating capacity, dimensions, compressor details, and safety devices.
Provides technical specifications for REYQ-XAYDU, including cooling/heating capacity, dimensions, and safety devices.
Provides technical specifications for REYQ-XAYCU, including cooling/heating capacity, dimensions, and safety devices.
Lists and describes components within the outdoor unit's refrigerant circuit.
Details refrigerant circuit components within various indoor unit types and their functions.
Describes refrigerant circuit components for outdoor-air processing units and their functions.
Details components and function of the branch selector unit.
Plane and front view illustrations of outdoor unit parts for specific models.
Plane and front view illustrations of outdoor unit parts for specific models.
Identifies and describes the buttons and LCD display of the BRC1E73 wired remote controller.
Identifies and describes the buttons on the wireless remote controller.
Details the situation and setting procedure for Main/Sub configuration of BRC1E73.
Details the procedure for setting group addresses for centralized control using BRC1E73.
Provides instructions for setting group numbers for centralized control using wireless remote controllers.
Illustrates an example of group number settings for centralized control.
Explains how to access service settings and maintenance menus using the BRC1E73 remote controller.
Describes various control functions for the outdoor unit, including stop, standby, startup, basic, and protection controls.
Details operation modes for branch selector units and indoor units in different scenarios.
Details how the system stops due to errors and refers to error code descriptions for diagnosis.
Details the forced compressor stop for pressure equalization and residual control.
Explains the control of the crankcase heater to prevent refrigerant melting in compressor oil.
Details the startup control sequence for cooling operation, including frequency steps and conditions.
Details the startup control sequence for heating operation, including frequency steps and conditions.
Describes normal control operations for compressor, inverter fan, electronic expansion valves, and solenoid valves.
Explains compressor capacity PI control for maintaining Te in cooling and Tc in heating.
Details compressor operation steps based on information from Compressor PI Control.
Explains PI control for electronic expansion valves for condenser and evaporator operation.
Explains high pressure protection control to prevent device activation and protect compressors.
Explains low pressure protection control to protect compressors from transient decrease of low pressure.
Details discharge pipe protection control to protect compressor internal temperature against errors or transient increases.
Explains compressor body protection control to protect internal temperature against errors or transient increases.
Covers inverter current protection and radiation fin temperature control.
Explains pump down residual control to recover refrigerant in the evaporator.
Describes oil return control to recover oil that flowed out from the compressor.
Explains defrost control conducted to recover heating capacity.
Details outdoor unit rotation to prevent compressor breakdown due to unbalanced oil level.
Describes mode switching from cooling to heating or simultaneous operation.
Explains emergency operation when a compressor or outdoor unit fails.
Flowcharts illustrating the operation logic for indoor units in cooling, heating, and fan modes.
Explains the relationship between remote controller set temperature and control target temperature.
Details temperature control using remote controller thermistors and suction air thermistors.
Explains thermostat control logic based on temperature differences and operation modes.
Explains drain pump control during normal operation and float switch conditions.
Explains superheating degree control in cooling and subcooling degree control in heating.
Explains freeze-up prevention control for indoor units by off cycling.
Describes hot start control to prevent cold air during heating startup.
Instructions for configuring indoor unit settings using the remote controller and other methods.
Comprehensive list of field settings for indoor units, categorized by Mode No. and First Code No.
Detailed explanations of field settings, including filter cleaning and thermistor selection.
Procedure for setting DIP switches on a spare PCB after replacement.
Describes how to define outdoor unit operations by changing field settings and monitoring parameters.
Provides an overview of available settings in Mode 2 accessed via outdoor unit PCB buttons.
Detailed explanations of various settings available in Mode 2.
Explains how to set Cool/Heat mode separately for each Branch Selector Unit.
Details night-time low noise and demand operation settings via external contact or automatic control.
Explains how to set night-time low noise operation levels and start/stop times.
Describes how to set demand operation levels for power consumption limitation.
Steps to perform before conducting a test operation.
Checklist of items to verify before and during test operation.
Procedure for performing a test operation of the gas furnace.
Troubleshooting guide for common indoor unit issues like no start, immediate stop, or poor cooling/heating.
Troubleshooting specific to systems with gas furnaces, including startup and switching issues.
Procedure to clear gas furnace lockout errors via remote controller or furnace board.
Troubleshooting for issues related to optional infrared presence/floor sensors.
Guides on checking and taking corrective action for errors displayed on the wired remote controller.
Procedure for determining error codes and taking corrective action using the wireless remote controller.
Lists error codes for indoor, outdoor, and branch selector units with descriptions and reference pages.
Troubleshooting for outdoor fan motor abnormalities.
Troubleshooting for electronic expansion valve coil abnormalities and dust clogging.
Troubleshooting for discharge pipe temperature abnormalities.
Troubleshooting for wet alarm conditions related to liquid refrigerant return.
Troubleshooting for refrigerant overcharged conditions.
Troubleshooting for harness abnormalities between outdoor unit main PCB and inverter PCB.
Troubleshooting for power supply voltage imbalance conditions.
Troubleshooting for abnormalities during compressor startup.
Troubleshooting transmission errors and open phase in power supply wiring.
Troubleshooting transmission errors between the remote controller and indoor unit.
Troubleshooting transmission errors between outdoor units.
Troubleshooting for issues caused by improper combinations of indoor, branch selector, and outdoor units.
Fault tree analysis for diagnosing high pressure issues.
Fault tree analysis for diagnosing low pressure issues.
Probes defective points related to superheat operation using fault tree analysis.
Procedures for checking power transistors on REYQ-XA models using multimeter.
Lists thermistor types and their corresponding resistance values for troubleshooting.
Details voltage measurement points for high and low pressure sensors.
Checks the power supply cable connections and resistance for fan motors.
Checks the signal cable connections and resistance for fan motors.
Measures electronic expansion valve coil resistance and ensures it's within range.
Wiring diagrams for outdoor units, covering different models like REYQ-XATJU.
Wiring diagrams for indoor units, including FXFQ, FXZQ, FXUQ, FXEQ, FXDQ, FXSQ, FXMQ models.
Wiring diagrams for air treatment equipment such as outdoor-air processing units.
Wiring diagrams for single and multi branch selector units.
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