To Next PageTo Next PageWhy is my Daikin RXYQ14T7Y1B discharge temperature too high?
The discharge temperature may be too high due to a closed stop valve or a refrigerant shortage. To resolve this, open the stop valves and check the refrigerant amount, recharging the unit if necessary.
What to do if my Daikin RXYQ14T7Y1B Air Conditioner has low pressure malfunction?
If your Daikin Air Conditioner is showing a low pressure malfunction, the stop valve might be closed, there could be a refrigerant shortage, or there might be an indoor unit malfunction. You should open the stop valves, check the refrigerant level and recharge if needed. Also, verify the user interface display and the transmission wiring between the outdoor and indoor units.
Why is my Daikin Air Conditioner compressor casing temperature too high?
A high compressor casing temperature could be due to a closed stop valve or a refrigerant shortage. The suggested solution is to open the stop valves and check the refrigerant amount, recharging the unit if necessary.
What causes Daikin Air Conditioner high pressure switch activation?
The high pressure switch in your Daikin Air Conditioner might be activating because of a stop valve issue or abnormalities in the field piping, or airflow over the air cooled coil.
What to do if my Daikin RXYQ14T7Y1B Air Conditioner indicates unusual low pressure on suction line?
If your Daikin Air Conditioner shows unusual low pressure on the suction line, immediately close valve A and push BS1 to reset. Before retrying the auto charge procedure, verify that the gas side stop valve and the refrigerant cylinder valve are opened correctly, and that the air inlet and outlet of the indoor unit are not obstructed.
How to fix Daikin RXYQ14T7Y1B electronic expansion valve malfunction (subcool)?
To address an electronic expansion valve malfunction (subcool) on your Daikin Air Conditioner, check the connection on the PCB or the actuator.
How to fix Daikin RXYQ14T7Y1B Air Conditioner electronic expansion valve malfunction (main)?
To fix an electronic expansion valve malfunction (main) on your Daikin Air Conditioner, check the connection on the PCB or the actuator.
How to fix Daikin Air Conditioner electronic expansion valve malfunction (storage vessel)?
To fix an electronic expansion valve malfunction (storage vessel) on your Daikin Air Conditioner, check the connection on the PCB or the actuator.
What to do if my Daikin RXYQ14T7Y1B Air Conditioner is preventing freeze-up in the indoor unit?
If your Daikin Air Conditioner is preventing freeze-up in the indoor unit, immediately close valve A and push BS1 to reset. Then, retry the auto charge procedure.
What to do if my Daikin RXYQ14T7Y1B ambient temperature sensor malfunctions?
If the ambient temperature sensor on your Daikin Air Conditioner malfunctions, check the connection on the PCB or actuator.
General| Refrigerant | R410A |
|---|---|
| Noise Level (Outdoor Unit) | 62 dB(A) |
| Power Supply | 400V, 3-phase, 50Hz |
| Operating Temperature (Cooling) | -5°C to 46°C |
| Operating Temperature (Heating) | -15°C to 15.5°C |
Details on the documentation set, including safety instructions and format.
Safety guidelines for users, covering operation, handling, and child safety.
Crucial safety instructions for installers regarding installation, electrical work, and environmental factors.
Details on the document's purpose, audience, and the complete documentation set.
Overview of unpacking, handling, and accessory removal from the outdoor unit box.
Steps for safely removing the outdoor unit from its packing material and pallet.
Overview of outdoor units, system layout, and possible indoor unit and option combinations.
Explanation of the model identification label on the outdoor unit, detailing its components and codes.
General description of the VRV IV heat pump system, its applications, and capacity ranges.
Diagrams illustrating typical system layouts with VRV IV outdoor and indoor units, including accessories.
Guidelines on combining different outdoor and indoor units, and available system options for optimal setup.
Outline of preparation steps before on-site installation, covering site, piping, and wiring.
Detailed requirements for selecting a suitable installation site, ensuring space, ventilation, and safety.
Specific site requirements for cold climates, addressing snowfall and humidity concerns.
Measures to ensure safety regarding refrigerant leakage, including concentration limits and regulations.
Guidelines for refrigerant piping installation, emphasizing cleanliness, tightness, and material suitability.
Tables and figures for selecting appropriate piping sizes based on unit capacity and connections.
Guidance on selecting refnet joints and headers based on outdoor unit capacity and system layout.
Restrictions on piping length, level difference, and allowable branch lengths for system performance.
Maximum allowable piping lengths and height differences for VRV DX systems.
Maximum allowable piping lengths and height differences for systems with VRV DX and Hydrobox units.
Guidelines for piping length and height differences when combining VRV DX and RA DX units.
Specific requirements and allowable combinations for using FXTQ indoor units.
Diagrams showing correct piping layouts for multiple outdoor units to prevent oil retention.
Steps for preparing electrical wiring, covering compliance and safety device requirements.
Information on electrical compliance standards and system impedance requirements.
Specifications for essential safety devices like fuses, circuit breakers, and earth leakage protectors.
An overview of the installation process, covering unit opening, mounting, piping, and wiring.
Procedures for safely accessing internal components by opening the outdoor unit and its electrical box.
Guidelines for mounting the outdoor unit securely and level on a strong foundation.
Essential steps and precautions for connecting the refrigerant piping system.
Methods for routing refrigerant piping, including front and side connections, and knockout hole preparation.
Instructions for safely creating knockout holes, including burr removal and wire protection.
Instructions for horizontally installing multi connection piping kit joints to ensure proper operation.
Specific instructions for removing and managing knockout holes for multi-outdoor unit connections.
Guidance on mounting refnet joints and headers for refrigerant branching kits.
Methods to protect piping from dirt, liquid, or dust during installation and storage periods.
Precautions and procedures for brazing pipe ends, including nitrogen purging and filler alloy selection.
Instructions for handling stop valves and service ports, emphasizing proper operation and closure.
Procedure for safely removing pinched pipes, warning about potential gas or oil blow-off.
Overview of refrigerant piping checks, including leak testing and vacuum drying procedures.
Procedures for performing vacuum and pressure leak tests to ensure system integrity.
Steps for performing vacuum drying to remove moisture from the refrigerant piping.
Instructions for insulating refrigerant piping after leak testing and vacuum drying.
Comprehensive guide to charging refrigerant, including precautions and methods.
Essential precautions for refrigerant charging, including R410A usage, safety gear, and unit power status.
Formula and tables for calculating the required additional refrigerant charge based on piping and unit capacity.
Flowchart illustrating the process of pre-charging refrigerant and subsequent charging steps.
Steps for connecting charging equipment and proceeding with automatic or manual refrigerant charging.
Detailed steps and indications for automatic refrigerant charging in heating and cooling modes.
Procedure for manually charging refrigerant, including field settings and operation control.
Table of error codes encountered during refrigerant charging, with causes and solutions.
Essential checks to perform after refrigerant charging, ensuring all valves are open and amounts recorded.
Instructions for filling out and attaching the fluorinated greenhouse gases label.
Comprehensive guide to connecting electrical wiring, including safety precautions and compliance.
Critical safety precautions for electrical wiring installation, including licensing and component handling.
Introduction to field wiring, covering power supply and indoor-outdoor communication wiring.
Guidelines for separating power and transmission wiring, routing, and managing wire lengths.
Instructions for safely creating knockout holes, including burr removal and wire protection.
Procedure for routing and fixing transmission wiring through the front side of the unit.
Steps for connecting transmission wiring to outdoor unit PCB terminals, including torque specifications.
Instructions for wrapping and fixing transmission wires along with refrigerant pipes.
Guidelines for routing and fixing power supply wiring, ensuring proper clearance from earth wires.
Precautions and procedures for connecting the power supply, emphasizing earth connection and terminal torques.
Overview of system configuration steps, including field settings, energy saving, and leak detection.
Detailed instructions for making field settings via the outdoor unit's PCB, using push buttons and DIP switches.
Introduction to manual input of field settings using push buttons and DIP switches on the PCB.
Identification of push buttons, DIP switches, and 7-segment displays for field settings.
Procedure to access push buttons and displays by removing front inspection covers.
Instructions on how to access operation modes 1 (monitoring) and 2 (field settings) using the push buttons.
Guide on using Mode 1 for basic settings and monitoring system status, including parameter checks.
Procedure for using Mode 2 to set field settings, including changing values and starting operations.
Details on monitoring settings in Mode 1, covering unit status, low noise, power consumption, and temperature targets.
Explanation of various field settings available in Mode 2, including Cool/Heat selection and temperature targets.
Guide to using the leak detection function for system safety and performance checks.
Information on enabling and configuring the automatic leak detection function, including system requirements.
Procedure for manually initiating a leak detection test and interpreting the results.
Information on optimizing system performance through energy-saving features and comfort settings.
Explanation of energy-saving operation methods: Basic, Automatic, and Hi-sensible/economic.
Description of comfort settings (Powerful, Quick, Mild, Eco) affecting energy consumption and temperature control.
Graphical illustration of automatic cooling mode operation, showing load curves and temperature targets.
Graphical illustration of automatic heating mode operation, showing load curves and temperature targets.
Overview of the commissioning process, focusing on verifying system operation after installation.
Safety precautions to observe during commissioning, including electrical hazards and operational warnings.
A checklist of essential checks to perform before powering up the unit for the first time.
Description of the system test run procedure to verify correct operation and identify potential issues.
Detailed steps for executing the system test run, including pre-operation checks and result interpretation.
Procedure for addressing and correcting malfunctions identified during the test run.
Introduction to the maintenance and service chapter, covering general information and recovery operations.
Crucial safety precautions for performing maintenance, including electrical hazards and electrostatic discharge.
Specific steps to prevent electrical hazards when servicing the unit, including power isolation and voltage checks.
Information on using service mode for vacuuming and refrigerant recovery operations.
Procedure for using vacuum mode for system maintenance, including expansion valve operation.
Instructions and warnings for recovering refrigerant, emphasizing the use of separate recovery systems.
Introduction to troubleshooting, covering problem-solving based on error codes and symptoms.
Guidance on correcting malfunctions by following actions specified in the error code table.
A comprehensive table listing main and sub codes for various malfunctions, their causes, and solutions.
Information on accessing technical data, including dimensions, service space, and components.
Diagrams showing the dimensions of the outdoor units for 8-12 HP and 14-20 HP models.
Specifications for required service space around the outdoor unit for adequate access and ventilation.
Diagrams and lists of components for RYYQ8~12 outdoor units.
Diagrams illustrating the layout of components within the electrical component box.
Piping diagrams for RYYQ8~12 and RYYQ14~20 outdoor units, showing component connections.
Wiring diagram for the 8 HP outdoor unit, detailing electrical connections and component labels.
Detailed technical specifications for outdoor units, including dimensions, weight, operation ranges, and capacity.
Table showing total indoor unit capacity ranges based on outdoor unit HP class and connection ratio.
Overview of the VRV IV heat pump system's outdoor unit models and their descriptions.
Recommended temperature and humidity ranges for safe and effective system operation.
General guidance on operating the system, including power supply timing and auto restart.
Explanation of different operation modes and how to select them via the user interface.
Details on heating operation, including defrost operation and hot start procedures to prevent cold air.
Steps for operating the system using the user interface without a dedicated changeover switch.
Instructions for operating the system using a cool/heat changeover remote control switch.
Guide to using the dry program for humidity reduction with minimal temperature impact.
Information on adjusting the air flow flap direction for different unit types.
Procedure for setting the master user interface to control system operation and manage slave units.
Overview of control systems, including individual and group control for indoor units.
Explanation of energy-saving operation methods: Basic, Automatic, and Hi-sensible/economic.
Description of comfort settings (Powerful, Quick, Mild, Eco) affecting energy consumption and temperature control.
Procedure for maintaining the unit after a prolonged period of inactivity, focusing on cleaning and power-up.
Steps for preparing the unit for a long stop period, including fan-only operation and power disconnection.
Information on the refrigerant used, its GWP, and safety precautions regarding its handling.
Information on warranty terms and recommended after-sales service procedures.
Information on the product warranty period and the importance of checking the warranty card.
Recommendations for regular maintenance and inspection to ensure optimal unit performance and longevity.
Table detailing recommended inspection and maintenance cycles for various unit components.
Factors that may necessitate shortened maintenance and replacement cycles for unit components.
A detailed list of malfunction codes, their causes, and suggested solutions for troubleshooting.
Description of common symptoms that do not indicate a system malfunction, offering explanations for their occurrence.
Explanation for the '88' display, indicating normal user interface condition after power-on.
Reason for compressor non-stop operation after heating, related to refrigerant management.
Explanation for the warm outdoor unit when stopped, due to crankcase heater operation.
Reason for feeling hot air when indoor unit is stopped, due to refrigerant flow from other operating units.
Guidance on identifying and resolving issues by observing system symptoms.
