From the information panel on my indoor unit I get the model listed as EHVH08S23DA6V.
The DAIKIN product web page for this model is here.
The links below provide some videos and manuals on programming the system.

Daikin EHVH-D6V

• Youtube Video: >>End User Settings
• Youtube Video: >>Set schedules
• Youtube Video: >>Power on and Initial Settings ***
• Youtube Video: >>Daikin Altherma 3 User interface ***
• Youtube Video: >>3rd Party How-to Video ***
• PDF: >>Daikin Altherma 3 Catalogue
• PDF: >>Operation Manual for EHVH08S23

Heatmiser Slimline Thermostat

• Youtube Video: >>Programming your Heatmiser Slimline Thermostat
• PDF: >>Heatmiser Slimline Thermostat Manual

There are two different Waterpumps used in the estate. Some of the older house use placeholder. This model has a high failure rate and has been replaced by the Mainboost VARIQ

Placeholder

• Youtube Video: >> to follow
• PDF: >>to follow

Mainboost VARIQ

• Website: >> stuart-turner.co.uk
• PDF: >> Mainboost VARIQ Manual

The ventilation / Hear Recovery System is the Zehnder ComfoAir 350
The product web page for this model is here.
   Thanks to Fiona for the lead on this.

Zehnder ComfoAir 350

• Video: >>End User Settings
• PDF: >>Zehnder ComfoAir 350
• WEB: >> Zehnder.co.uk

Changing Filters

If the red light on the fan speed selector comes on this indicates that there is either a malfunction or the Filters may need changing.

The unit in the attic will show the unit Status. Normally it shows a “1”, “2” or “3” to indicate the fan speed. If it shows alternating “Fil” and “tEr”, This indicates that the Filters may be dirty and may need changing. Anything else may indicate a malfunction.

On the attic unit press "OK" for at least 4 seconds to clear the filter warning message and see the user manual for details on replacing the filters.

Programming Example: Changing P35

P35 is the low fan speed for the air supply into the house, it defaults to 50%. to change this use the following procedure. see page 9.

See Video Above
• Press "Menu" to select the programming Mode: P2 is displayed
• Press the Up & Down Keys simultaneously for 5 Seconds to enter programming mode: P3 is displayed
•     * The first program menu is P3, at this point you can use the UP/Down keys to cycle through P3 to P9.***
• Press "OK" on P3: P30 is displayed
• Press "UP" 5 times: P35 is displayed
• Press "OK" to select: Current speed is displayed: probably 50.
• Press "UP" or "Down" to set the level you want
• Press "OK" to save: P35 is displayed
•     * you can press "UP" or "Down" at this point and then "OK" to change other settings.
• Press "Menu" to back out: P3 is displayed
• Press "Menu" to Exit programming Mode.