Daikin Altherma EHFH-D3V User Manual (English)

Questions and Answers:

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Julie WareSep 7, 2025
How to fix a noisy pump (cavitation) in my Daikin Heat Pump?
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  samantha84Sep 7, 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.
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Michele LandryAug 23, 2025
Why is my Daikin Altherma EHFH-D3V Heat Pump not sufficiently heating at low outdoor temperatures?
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  Jamie FreemanAug 23, 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.
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Christopher JacobsonAug 25, 2025
What to do if Daikin Altherma EHFH-D3V Heat Pump fails?
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  Edward KellyAug 25, 2025
  A Daikin Heat Pump failure can stem from several issues. It could be due to damage to the heat pump itself, in which case you should consult the help text for malfunctions. Another cause might be air trapped within the system, requiring you to purge the air. Also, an incorrect hydraulic balance could be the reason; the installer needs to perform hydraulic balancing to ensure correct flow distribution. Finally, various malfunctions can trigger a failure; check the user interface for error codes and consult the help text for malfunctions.
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Teresa CollinsAug 26, 2025
Why is the water at the tap too cold with my Daikin Altherma EHFH-D3V Heat Pump?
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  Stephanie WillisAug 27, 2025
  If the water at the tap is too cold when using your Daikin Heat Pump, it might be because you ran out of domestic hot water due to unusually high consumption. If you need hot water immediately, activate the DHW tank Powerful operation. Keep in mind that this will consume extra energy.
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Kimberly GarrettAug 27, 2025
How to fix too cold/hot living room with Daikin Altherma EHFH-D3V Heat Pump?
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  johnsonbarbaraAug 27, 2025
  If you're feeling too cold or too hot in your living room while using the Daikin Heat Pump, here are a few potential solutions: * If the desired room temperature is too low (or high), increase (or decrease) it. * If the desired room temperature cannot be reached, increase the desired leaving water temperature according to your heat emitter type. * If the weather-dependent curve is set incorrectly, adjust the weather-dependent curve.
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jocelynevansAug 29, 2025
What to do if Daikin Altherma EHFH-D3V Heat Pump refrigerant leaks in the room and comes in contact with fire?
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  Amber MillerAug 29, 2025
  If refrigerant leaks in the room and comes into contact with fire, immediately turn off any combustible heating devices and ventilate the room thoroughly. Then, contact the dealer from whom you purchased your Daikin Heat Pump for further assistance.
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Kelly RoachSep 12, 2025
Why is the water pressure unusually high at the tapping point of my Daikin Altherma EHFH-D3V?
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  clittleSep 13, 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.
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Tyler JohnsonSep 9, 2025
What to do if Daikin Altherma EHFH-D3V is not heating or cooling and water volume is low?
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  Sean WardSep 9, 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.
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Susan HughesSep 6, 2025
Why is my Daikin Altherma EHFH-D3V Heat Pump system making gurgling noises?
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  Jared NelsonSep 6, 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.
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Emily WaltersSep 3, 2025
What to do if Daikin Altherma EHFH-D3V is not heating or cooling and water flow is low?
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  Brian Harris Jr.Sep 3, 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.

Daikin Altherma EHFH-D3V Specifications

General

Type	Air-to-Water Heat Pump
Refrigerant	R-32
Operating Temperature Range (Heating)	-20°C to 35°C
Operating Temperature Range (Cooling)	10°C to 46°C
Heating Capacity	4.0 - 16.0 kW
Cooling Capacity	3.50 to 14.00 kW
Energy Efficiency Ratio (Cooling)	4.00
Sound Power Level	60 dB