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Daikin ERGA08DAV3 - User Manual

Daikin ERGA08DAV3
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Installer reference guide
Daikin Altherma 3 R F
ERGA04DAV3(A)
ERGA06DAV3(A)
ERGA08DAV3(A)
EHVH04S18D*6V7
EHVH04S23D*6V7
EHVH08S18D*6V7
EHVH08S23D*6V7
EHVH08S18D*9W7
EHVH08S23D*9W7
EHVX04S18D*3V7
EHVX04S18D*6V7
EHVX04S23D*3V7
EHVX04S23D*6V7
EHVX08S18D*6V7
EHVX08S23D*6V7
EHVX08S18D*9W7
EHVX08S23D*9W7

Table of Contents

Other manuals for Daikin ERGA08DAV3

Preview: Installation Manual
Installation Manual16 pages

Questions and Answers

  • M
    Mathew RodriguezAug 17, 2025
    Why is my Daikin Heat Pump not sufficiently heating at low outdoor temperatures?
    • S
      Sheila AllenAug 18, 2025
      If your Daikin Heat Pump isn't sufficiently heating the space at low outdoor temperatures, it could be due to several reasons: * The backup heater operation might not be activated. Ensure the backup heater operation mode is enabled. * The backup heater overcurrent circuit breaker might be off. Turn it back on if it is off. * The thermal protector of the backup heater might be activated. If it has, check the water pressure, whether there is air in the system, and the air purge operation, then press the reset button in the switch box. * The backup heater equilibrium temperature may not be configured correctly. Try increasing the equilibrium temperature to activate the backup heater operation at a higher outdoor temperature.
  • J
    Jimmy ChanAug 20, 2025
    How to check temperature settings on Daikin Heat Pump when it is not heating or cooling?
    • P
      Patrick GardnerAug 20, 2025
      If your Daikin Heat Pump isn't heating or cooling as expected, first check the temperature setting on the remote controller to ensure it's correct. The issue might stem from an incorrect setting.
  • C
    Christopher KelleyAug 22, 2025
    What to do if Daikin ERGA08DAV3 Heat Pump is not heating or cooling and water flow is low?
    • J
      Julie SmithAug 22, 2025
      If your Daikin Heat Pump isn't heating or cooling as expected, it might be due to low water flow. Ensure all shut-off valves of the water circuit are completely open, the water filter is clean, and there is no air in the system. Also, check that the water pressure is above 1 bar, the expansion vessel is not broken, and the valve towards the expansion vessel is open. Verify that the resistance in the water circuit isn't too high for the pump.
  • R
    Richard BennettAug 25, 2025
    Why won't the compressor start on my Daikin Heat Pump for space or water heating?
    • L
      Laura DodsonAug 26, 2025
      If the compressor in your Daikin Heat Pump isn't starting for space or domestic water heating, it could be because the unit is starting outside of its operation range, meaning the water temperature is too low. In this case, the unit uses the backup heater to reach the minimum water temperature first (15°C). Check that the power supply to the backup heater is correctly wired, and the backup heater thermal protector is not activated, and the backup heater contactors are not broken.
  • M
    Michael ReedAug 27, 2025
    Why is my Daikin ERGA08DAV3 Heat Pump system making gurgling noises?
    • R
      Ronald PatelAug 27, 2025
      If your Daikin Heat Pump system is making gurgling noises after commissioning, it could be caused by air in the system. Purge the air from the system. It can also be caused by various malfunctions. Check if or is displayed on the home screen of the user interface for more information about the malfunction.
  • B
    Bethany FoxAug 30, 2025
    How to fix a noisy pump (cavitation) in my Daikin Heat Pump?
    • A
      Andrew FosterAug 30, 2025
      If the pump in your Daikin Heat Pump is making noise (cavitation), it could be due to air in the system. Purge the air manually or use the automatic air purge function. Another possible cause is that the water pressure at the pump inlet is too low. Ensure the water pressure is above 1 bar, the water pressure sensor is not broken, the expansion vessel is not broken, the valve of the water circuit towards the expansion vessel is open, and the pre-pressure setting of the expansion vessel is correct.
  • C
    Clinton PottsSep 1, 2025
    What to do if Daikin ERGA08DAV3 Heat Pump is not heating or cooling and water volume is low?
    • C
      carly98Sep 1, 2025
      If your Daikin Heat Pump isn't heating or cooling as expected, the water volume in the installation might be too low. Make sure that the water volume in the installation is above the minimum required value.
  • R
    Rachael ThomasSep 4, 2025
    Why does the pressure relief valve keep opening on my Daikin Heat Pump?
    • D
      Dale MillerSep 4, 2025
      If the pressure relief valve of your Daikin Heat Pump opens, it could be due to several reasons: * The expansion vessel might be broken. Replace it. * The valve of the water circuit towards the expansion vessel might be closed. Open the valve. * The water volume in the installation might be too high. Ensure it is below the maximum allowed value. * The water circuit head might be too high. Check the installation requirements.
  • D
    Dana ColemanSep 6, 2025
    What to do if preferential kWh rate signal was sent by the electricity company and Daikin ERGA08DAV3 compressor does not start?
    • A
      Alicia CastilloSep 6, 2025
      If the compressor in your Daikin Heat Pump isn't starting for space heating or domestic water heating, it could be because the preferential kWh rate signal was sent by the electricity company. Wait for the power to return (2 hours max.).
  • K
    Kathy RamosSep 9, 2025
    Why is the water pressure unusually high at the tapping point of my Daikin ERGA08DAV3 Heat Pump?
    • S
      Shannon McfarlandSep 9, 2025
      If the pressure at the tapping point of your Daikin Heat Pump is temporarily unusually high, it could be due to a failing or blocked pressure relief valve. Flush and clean the complete tank, including the piping between the pressure relief valve and the cold water inlet, or replace the pressure relief valve.

Summary

General Safety Precautions

For the Installer

About the Units and Options

Application Guidelines

Setting Up the Space Heating;Cooling System

Guidelines for setting up heating and cooling systems in rooms.

Setting Up an Auxiliary Heat Source for Space Heating

Setting Up the Domestic Hot Water Tank

Covers system layout, DHW consumption, and tank temperature settings.

Setting Up the Energy Metering

Setting Up the Power Consumption Control

Details how to limit the system's power consumption.

Setting Up an External Temperature Sensor

Preparation

Preparing the Installation Site

Preparing Refrigerant Piping

Details piping material, diameter, temper grade, and insulation requirements.

Preparing Water Piping

Covers water circuit requirements, piping diameter, and flow rate.

Preparing Electrical Wiring

Includes safety precautions and guidelines for electrical wiring.

Installation

Mounting the Outdoor Unit

Covers mounting procedures, precautions, and installation structures.

Mounting the Indoor Unit

Details mounting procedures, precautions, and installation steps for the indoor unit.

Connecting the Refrigerant Piping

Covers connection procedures, precautions, and guidelines for refrigerant piping.

Checking the Refrigerant Piping

Instructions on how to check for leaks and perform vacuum drying.

Charging Refrigerant

Guidance on charging additional or completely recharging refrigerant.

Connecting Water Piping

Covers connecting water piping, precautions, and filling procedures.

Connecting the Electrical Wiring

Details electrical wiring connections, compliance, and guidelines.

Configuration

Configuration Wizard

Settings Menu

Commissioning

Precautions When Commissioning

Checklist Before Commissioning

Lists essential checks to perform before powering up the unit.

Checklist During Commissioning

Details checks for flow rate, air purge, test runs, and screed dryout.

Maintenance and Service

Maintenance Safety Precautions

Highlights safety precautions for maintenance tasks.

Checklist for Yearly Maintenance of the Outdoor Unit

Checklist for Yearly Maintenance of the Indoor Unit

About Cleaning the Water Filter in Case of Trouble

Instructions for removing, cleaning, and installing the water filter.

Troubleshooting

Precautions When Troubleshooting

Highlights safety precautions to take before troubleshooting.

Solving Problems Based on Symptoms

Solving Problems Based on Error Codes

Offers guidance on understanding and resolving error codes.

Disposal

To Pump Down

To Start and Stop Forced Cooling

Technical Data

Electrical Connection Diagram

Table 1 - Maximum Refrigerant Charge Allowed in a Room

Table 2 - Minimum Floor Area: Indoor Unit

Table 3 - Minimum Venting Opening Area for Natural Ventilation

Daikin ERGA08DAV3 Specifications

General IconGeneral
BrandDaikin
ModelERGA08DAV3
CategoryHeat Pump
LanguageEnglish

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