What to do if my Daikin VRV IV Heat Pump has low pressure malfunction?
If your Daikin Heat Pump shows a low pressure malfunction, you should: * Open stop valves. * Check refrigerant amount and recharge unit. Additionally, consider that a refrigerant shortage or an indoor unit malfunction could be the cause. In the latter case, check the user interface's display or the transmission wiring between the outdoor and indoor units.
What to do if the earth leakage detector activated in Daikin Heat Pump?
If the earth leakage detector is activated in your Daikin Heat Pump, restart the unit. If the problem reoccurs, contact your dealer.
Why does the Daikin VRV IV Heat Pump high pressure switch activate?
The high pressure switch in your Daikin Heat Pump may activate due to the stop valve situation or abnormalities in field piping or airflow over air cooled coil. Check these elements to resolve the issue.
What to do if stop valve closed (liquid) in Daikin Heat Pump?
If the stop valve is closed (liquid) in your Daikin Heat Pump, open the liquid stop valve.
What causes electronic expansion valve malfunction (main) in Daikin VRV IV Heat Pump?
An electronic expansion valve malfunction (main) in your Daikin Heat Pump may be caused by connection issues on the PCB or actuator. Check these connections.
What causes electronic expansion valve malfunction (liquid cooling) in Daikin Heat Pump?
An electronic expansion valve malfunction (liquid cooling) in your Daikin Heat Pump may be caused by connection issues on the PCB or actuator. Check these connections.
What causes electronic expansion valve malfunction (subcool) in Daikin Heat Pump?
An electronic expansion valve malfunction (subcool) in your Daikin Heat Pump may be caused by connection issues on the PCB or actuator. Check these connections.
What causes earth leakage detector malfunction in Daikin VRV IV Heat Pump?
An earth leakage detector malfunction in your Daikin Heat Pump may be caused by connection issues on the PCB or actuator. Check these connections.
General| Series | VRV IV+ |
|---|---|
| Refrigerant | R-410A |
| Inverter Technology | Yes |
| Energy Efficiency | High |
| Operating Temperature Range (Cooling) | -5°C to 46°C |
| Operating Temperature Range (Heating) | -20°C to 15.5°C |
| Maximum Piping Length | 1000 m |
| Type | Variable Refrigerant Volume (VRV) Heat Pump |
| Capacity Range | 8 HP to 24 HP |
| Cooling Capacity Range | 22.4 kW to 61.5 kW |
| Heating Capacity Range | 25 kW - 150 kW |
| Noise Level (Outdoor Unit) | 55 dB(A) to 70 dB(A) |
| Power Supply | 380-415V, 3-phase, 50Hz |
| Maximum Height Difference | 50 m |
| Indoor Unit Compatibility | Cassette, Duct, Wall Mounted |
| Coefficient of Performance (COP) | Up to 4.5 (depending on model) |
Manual title detailing the VRV IV+ heat pump for high ambient temperatures.
General information about the document structure, purpose, and audience.
Important safety guidelines for users to prevent harm and ensure proper operation.
Specific instructions for operating the unit safely, covering electrical and physical hazards.
Explains the overall system configuration and components, including indoor and outdoor units.
Specifies the temperature and humidity limits for safe and effective system operation.
Details on how to turn on, operate, and manage the system based on unit and interface combinations.
Explains how to select and perform different operating modes for the system.
Information on heating operation, including defrost and hot start functions for optimal performance.
Steps to operate the system using basic controls without a dedicated cool/heat changeover switch.
Procedures for operating the system using a cool/heat changeover remote control switch.
Functionality and usage of the dry program for humidity reduction with minimal temperature change.
Instructions on how to adjust the air flow direction using the unit's flap and settings.
Details on the refrigerant type, GWP, and safety precautions related to its handling.
Information on warranty periods, service contracts, and how to request dealer assistance.
Guidance on regular maintenance and inspection to ensure optimal unit performance and longevity.
Explains how to interpret and address malfunction codes displayed by the system for diagnosis.
Lists common symptoms that are not actual malfunctions but normal system behavior.
Information about Daikin's environmental commitment and circular economy initiative for refrigerants.
Instructions on how to safely remove accessories from the outdoor unit before installation.
Overview of the VRV IV heat pump outdoor unit, including its features and model lineup.
Visual representation of the system components and their interconnections, emphasizing installation conditions.
Table detailing the required diameters for gas and liquid pipes used as accessories.
Step-by-step guide on how to remove the transportation stay from the compressor leg for safe operation.
Guidelines for preparing the installation site, including environmental and structural requirements.
Specific requirements for the outdoor unit installation location, including spacing and environmental factors.
Precautions and requirements for installing the outdoor unit in low ambient temperatures with high humidity.
Instructions on how to safely open the outdoor unit for access to internal components and electrical parts.
Guidance on how to securely mount the outdoor unit on a stable base to prevent vibration and noise.
Essential requirements for preparing refrigerant piping, focusing on cleanliness and material specifications for R410A.
Procedures for determining the correct sizes for gas and liquid refrigerant piping based on system capacity.
Guidance on choosing the appropriate refrigerant branch kits based on outdoor unit capacity and indoor unit connections.
Illustrates various piping layouts for systems with multiple outdoor units, addressing oil retention risks.
Instructions on how to route refrigerant piping, including side and front connection methods and knockout hole preparation.
Steps for connecting field-installed piping to the outdoor unit, emphasizing the use of accessory pipes and insulation.
Guidance on installing multi connection piping kits, ensuring proper orientation and joint placement.
Methods for sealing piping and wiring intake holes to prevent contamination and entry of small animals.
Procedures for operating stop valves and handling service ports, including tightening torques and precautions.
Instructions for safely removing spun pipes, including necessary precautions regarding gas and oil.
Overview of refrigerant piping checks, including leak testing and vacuum drying procedures before powering the system.
General recommendations for efficient leak testing and vacuum drying, including equipment setup.
Detailed setup instructions for performing leak tests and vacuum drying on the refrigerant piping system.
Safety warnings and essential precautions to follow when charging the system with refrigerant, including personal protective equipment.
Step-by-step guide for conducting vacuum and pressure leak tests to ensure piping integrity.
Procedures for removing moisture from the system, essential for proper refrigerant charging and operation.
Instructions on how to properly insulate refrigerant piping to prevent condensation and ensure thermal efficiency.
General guidance on the refrigerant charging process, including steps for manual charging and pre-charging.
Formula and tables to calculate the correct amount of additional refrigerant needed for the system.
A visual flow chart detailing the steps for pre-charging refrigerant, including overcharge handling.
Detailed procedure for performing the refrigerant charging process, including pre-charging and manual charging steps.
Specific instructions for manual refrigerant charging, including timing and stopping the process.
Lists error codes that may occur during charging and provides solutions for each.
Final checks to be performed after refrigerant charging to ensure the system is ready.
Specifies the required safety devices like fuses, circuit breakers, and earth leakage protectors for power supply.
General overview of field wiring, including power supply, transmission wiring, and communication systems.
Instructions on how to route and secure the transmission wiring within the unit.
Steps for connecting the transmission wiring between indoor and outdoor units.
How to neatly finish the transmission wiring using tape and secure it properly.
Guidance on routing and securing the power supply wiring, ensuring clearance from other components.
Procedures for connecting the power supply to the unit, including earth wire usage and terminal connections.
Steps to measure and verify the insulation resistance of the compressor, especially after refrigerant accumulation.
Instructions on how to make essential field settings for the outdoor unit and system configuration.
Explains the purpose and process of making field settings via the master outdoor unit.
Identifies the location of 7-segment displays, buttons, and DIP switches used for field settings.
Steps to access the push buttons and displays on the PCB without opening the main electronic component box.
How to switch between default, mode 1 (monitoring), and mode 2 (field settings) using the BS1 button.
Instructions for using Mode 1 to set basic settings and monitor unit status, including navigation controls.
Procedures for using Mode 2 to set field settings for the outdoor unit and system, with detailed navigation steps.
Explains the various monitoring parameters available in Mode 1, such as unit status and connected units.
Details on specific field settings available in Mode 2, including Cool/Heat selection and system combination settings.
Important safety precautions to follow before and during the commissioning test run, especially regarding indoor units.
A checklist of essential items to verify after installation and before powering up the unit for commissioning.
Overview of the test run procedure, its purpose, and what to check for, including potential malfunction codes.
Step-by-step guide on how to perform the automatic system test run and interpret its results.
Procedures for addressing and correcting abnormalities identified during the test run, including re-testing.
Guide to resolving issues by interpreting error codes displayed on the unit, including main and sub codes.
A comprehensive list of error codes, their causes, and suggested solutions for troubleshooting.
Detailed listing of error codes, their causes, and recommended solutions for various system malfunctions.
Further listing of error codes related to transmission, power supply, wiring, and unit combinations with their solutions.
Recommended clearances around the outdoor unit for adequate servicing, air inlet, and air outlet.
Schematic diagrams illustrating the refrigerant piping for different outdoor unit models (RXYTQ8, RXYTQ10+12, RXYTQ14+16).
Wiring diagrams for the outdoor unit, explaining symbols and connections for various components.
Explanation of symbols, wire colours, and component legends used in the wiring diagrams for different HP models.
A comprehensive list of components, their abbreviations, and corresponding identifiers used in the wiring diagrams.
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