To Next PageTo Next PageWhy is my Daikin RXYQ12T7Y1B Air Conditioner 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 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 RXYQ12T7Y1B 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 RXYQ12T7Y1B 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 RXYQ12T7Y1B 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 RXYQ12T7Y1B 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 RXYQ12T7Y1B 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 RXYQ12T7Y1B 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 RXYQ12T7Y1B 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 RXYQ12T7Y1B ambient temperature sensor malfunctions?
If the ambient temperature sensor on your Daikin Air Conditioner malfunctions, check the connection on the PCB or actuator.
General| Brand | Daikin |
|---|---|
| Model | RXYQ12T7Y1B |
| Category | Air Conditioner |
| Language | English |
Explains the meaning of warnings and symbols used in the documentation.
Provides essential safety instructions for users operating the appliance.
Covers general safety precautions, installation site, and refrigerant handling for installers.
Details the target audience and the documentation set for the VRV IV system.
Introduces information on outdoor unit identification, system layout, and indoor unit combinations.
Explains the model identification codes for the outdoor units.
Describes the VRV IV heat pump system and its model line-up.
Illustrates the system layout showing connections between indoor and outdoor units.
Details allowable combinations of indoor and outdoor units and system options.
Outlines the necessary steps for preparing installation site, piping, and wiring.
Details requirements for the outdoor unit installation site, including space and environmental considerations.
Provides specific installation guidelines for outdoor units in cold weather conditions.
Explains safety measures and regulations concerning refrigerant leaks.
Covers refrigerant piping requirements, size selection, and branch kit selection.
Specifies requirements when using FXTQ indoor units with the VRV IV system.
Details electrical compliance standards and safety device requirements for installation.
Provides a guide to the on-site installation process for the VRV IV system.
Instructions on how to open the outdoor unit and access its electrical component box.
Guidance on providing a stable and level installation structure for the outdoor unit.
Covers precautions and procedures for connecting refrigerant piping.
Details methods for checking refrigerant piping for leaks and performing vacuum drying.
Provides instructions on insulating refrigerant piping to prevent condensation.
Explains precautions and procedures for charging refrigerant, including automatic and manual methods.
Covers electrical wiring precautions, field wiring, and specific wiring connections.
Guides the installer through system configuration after installation.
Details how to make field settings using push buttons, DIP switches, and mode selections.
Explains how to connect a PC for system configuration using the EKPCCAB option.
Describes advanced energy saving features and optimum operation settings.
Outlines the steps for commissioning the system, including pre-checks and test runs.
Highlights critical safety precautions to observe during commissioning.
Provides a checklist of items to verify before powering up the unit for commissioning.
Explains the purpose and procedure of the system test run.
Step-by-step instructions for executing the system test run.
Guidance on how to address and correct issues identified during the test run.
Instructions on how to start and operate the system after installation and commissioning.
Introduces maintenance procedures and recommended service intervals.
Details critical safety measures, including electrical hazards and ESD precautions.
Explains how to use service mode operations like vacuuming and refrigerant recovery.
Provides an overview of troubleshooting procedures for system issues.
Guides users on how to resolve problems by referring to error codes.
Lists common error codes, their causes, and suggested solutions.
Introduces the technical data available for the VRV IV system.
Provides dimensional drawings for the outdoor units.
Specifies the required service space around the outdoor unit for installation and maintenance.
Illustrates and lists the components of the outdoor units.
Shows the layout and components within the electrical component box.
Provides piping diagrams for different outdoor unit models.
Illustrates the wiring diagrams for the outdoor units.
Lists detailed technical and electrical specifications for outdoor units.
Provides a table showing indoor unit capacity ranges relative to outdoor unit HP class.
Illustrates the system layout and possible outdoor unit models.
Specifies the safe and effective operating ranges for temperature and humidity.
Provides instructions on operating the VRV IV system, including power and interface usage.
Explains how to use the dry program for humidity control with minimal temperature change.
Details how to adjust the air flow direction, including flap movement.
Describes basic, automatic, and Hi-sensible/economic operation methods.
Explains comfort settings like Powerful, Quick, Mild, and Eco for customized operation.
Lists recommended cycles for maintenance and inspection of system components.
Details situations that may require shortened maintenance or replacement cycles.
Describes common non-malfunction symptoms and their explanations.
Provides guidance on diagnosing and resolving issues based on observed symptoms.
Advises contacting a dealer for professional removal and reinstallation of the unit.
Instructs to contact a dealer for proper disposal of the unit and refrigerant.
Defines key terms used in the manual, such as Dealer, Authorized Installer, and User.
