Operation manual

2.1 General

WARNING

If you are NOT sure how to operate the unit, contact your installer.

WARNING

This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved.

Children SHALL NOT play with the appliance.

Cleaning and user maintenance SHALL NOT be made by children without supervision.

WARNING

To prevent electrical shocks or fire:

• Do NOT rinse the unit.
• Do NOT operate the unit with wet hands.
• Do NOT place any objects containing water on the unit.

CAUTION

• Do NOT place any objects or equipment on top of the unit.
• Do NOT sit, climb or stand on the unit.

2.2 Instructions for safe operation

WARNING: MILDLY FLAMMABLE MATERIAL

The refrigerant inside this unit is mildly flammable.

WARNING

The appliance shall be stored so as to prevent mechanical damage and in a well-ventilated room without continuously operating ignition sources (example: open flames, an operating gas appliance or an operating electric heater).

WARNING

• Do NOT pierce or burn refrigerant cycle parts.
• Do NOT use cleaning materials or means to accelerate the defrosting process other than those recommended by the manufacturer.
• Be aware that the refrigerant inside the system is odourless.

Units are marked with the following symbol: [Recycling symbol]

This means that electrical and electronic products may NOT be mixed with unsorted household waste. Do NOT try to dismantle the system yourself: the dismantling of the system, treatment of the refrigerant, of oil and of other parts MUST be done by an authorised installer and MUST comply with applicable legislation. Units MUST be treated at a specialised treatment facility for reuse, recycling and recovery. By ensuring this product is disposed of correctly, you will help to prevent potential negative consequences for the environment and human health. For more information, contact your installer or local authority.

Batteries are marked with the following symbol: [Battery symbol]

This means that the batteries may NOT be mixed with unsorted household waste. If a chemical symbol is printed beneath the symbol, this chemical symbol means that the battery contains a heavy metal above a certain concentration. Possible chemical symbols are: Pb: lead (>0.004%). Waste batteries MUST be treated at a specialised treatment facility for reuse. By ensuring waste batteries are disposed of correctly, you will help to prevent potential negative consequences for the environment and human health.

3.1 Components in a typical system layout

A diagram illustrates a typical system layout with labeled components:

• A: Main zone (Example: Living room)
• B: Additional zone (Example: Bedroom)
• C: Technical room (Example: Garage)
• a: Outdoor unit heat pump
• b: Indoor unit heat pump
• c: Domestic hot water (DHW) tank
• d: User interface of the indoor unit
• e: User interface used as room thermostat
• f: Underfloor heating
• g: Radiators, heat pump convectors, or fan coil units

INFORMATION

The indoor unit and the domestic hot water tank (if installed) can be separated or integrated depending on the indoor unit type.

4.1 User interface: Overview

The user interface has the following components:

• a: Status indicator LEDs
• b: LCD screen
• c: Dials and buttons

Status indicator
The LEDs of the status indicator light up or blink to show the operating mode of the unit.

LCD screen
The LCD screen has a sleeping function. After 15 min of non-interaction with the user interface, the screen darkens. Pressing any button or rotating any dial awakens the display.

Dials and buttons
You use the dials and buttons:

• To navigate through the screens, menus and settings of the LCD screen
• To set values

A diagram shows the left dial (a) and right dial (e), with buttons (b, c, d).

4.2 Possible screens: Overview

The most common screens are as follows:

• a: Home screen
• b: Main menu screen
• c: Lower level screens:
  
  • c1: Setpoint screen
  • c2: Detailed screen with values
  • c3: Screen with weather-dependent curve
  • c4: Screen with schedule

4.3 Turning operation ON or OFF

4.4 Space heating/cooling control

4.5 Domestic hot water control

4.6 Advanced usage

The amount of information you can read out and edit in the menu structure depends on your user permission level:

• User: Standard mode
• Advanced user: You can read out and edit more information

To change the user permission level

You can change the user permission level as follows:

1. Go to [B]: User profile.
2. Enter the applicable pin code for the user permission level.
   
   • Browse through the list of digits and change the selected digit.
   • Move the cursor from left to right.
   • Confirm the pin code and proceed.

User pin code
The User pin code is 0000.

Advanced user pin code
The Advanced user pin code is 1234. Additional menu items for the user are now visible.

4.7 Schedule screen: Example

This example shows how to set a room temperature schedule in heating mode for the main zone.

INFORMATION

The procedures to program other schedules are similar.

To program the schedule: overview
Example: You want to program the following schedule:

User defined 1

Prerequisite: The room temperature schedule is only available if room thermostat control is active. If leaving water temperature control is active, you can program the main zone schedule instead.

1. Go to the schedule.
2. (optional) Clear the content of the whole week schedule or the content of a selected day schedule.
3. Program the schedule for Monday.
4. Copy the schedule to the other weekdays.
5. Program the schedule for Saturday and copy it to Sunday.
6. Give the schedule a name.

To go to the schedule

1. Go to [1.1]: Room > Schedule.
2. Set scheduling to Yes.
3. Go to [1.2]: Room > Heating schedule.

To clear the content of the week schedule

1. Select the name of the current schedule.
2. Select Delete.
3. Select OK to confirm.

To clear the content of a day schedule

1. Select the day of which you want to clear the content. For example Friday
2. Select Delete.
3. Select OK to confirm.

To program the schedule for Monday

1. Select Monday.
2. Select Edit.
3. Use the left dial to select an entry and edit the entry with the right dial. You can program up to 6 actions each day. On the bar, a high temperature has a darker colour than a low temperature.

A diagram shows the schedule programming interface for Monday, with time slots and temperatures.

Note: To clear an action, set its time as the time of the previous action.

4 Confirm the changes.

Result: The schedule for Monday is defined. The value of the last action is valid until the next programmed action. In this example, Monday is the first day you programmed. Thus, the last programmed action is valid up to the first action of next Monday.

To copy the schedule to the other weekdays

1. Select Monday.
2. Select Copy.
3. Select Tuesday.
4. Select Paste.

A diagram shows the result of copying the schedule.

5 Repeat this action for all other weekdays.

To program the schedule for Saturday and copy it to Sunday

1. Select Saturday.
2. Select Edit.
3. Use the left dial to select an entry and edit the entry with the right dial.

A diagram shows the schedule programming interface for Saturday.

4 Confirm the changes.

5 Select Saturday.

6 Select Copy.

7 Select Sunday.

8 Select Paste.

A diagram shows the result of copying the schedule.

To rename the schedule

1. Select the name of the current schedule.
2. Select Rename.
3. (optional) To delete the current schedule name, browse through the character list until - is displayed, then press to remove the previous character. Repeat for each character of the schedule name.
4. To name the current schedule, browse through the character list and confirm the selected character. The schedule name can contain up to 15 characters.
5. Confirm the new name.

INFORMATION

Not all schedules can be renamed.

4.8 Menu structure: Overview user settings

A hierarchical diagram outlines the menu structure for user settings, information, installer settings, and operation. Key sections include:

• [1] Room (Schedule, Antifrost, Setpoint range)
• [2] Main zone (Schedule, Setpoint mode, Heating/Cooling WD curve)
• [3] Additional zone (Schedule, Setpoint mode, Heating/Cooling WD curve)
• [4] Space heating/cooling (Operation mode, Operation mode schedule)
• [5] Tank (Powerful operation, Comfort/Eco/Reheat setpoint, Schedule)
• [7] User settings (Language, Time/date, Holiday, Quiet, Electricity/Gas price)
• [8] Information (Energy data, Malfunction history, Dealer information, Sensors, Actuators, Operation modes, About, Connection status)
• [B] User profile
• [C] Operation (Room, Space heating/cooling, Tank)

Specific sub-options are listed under each main category, e.g., [1.4] Antifrost, [1.5] Setpoint range, [7.2] Time/date, [7.3] Holiday, [7.4] Quiet, [7.5] Electricity price, [8.1] Energy data.

INFORMATION

Depending on the selected installer settings and unit type, settings will be visible/invisible.

4.9 Installer settings: Tables to be filled in by installer

6.1 Overview: Maintenance and service

The installer has to perform a yearly maintenance. You can find the contact/helpdesk number via the user interface.

As end user, you have to:

• Keep the area around the unit clean.
• Keep the user interface clean with a soft damp cloth. Do NOT use any detergents.
• Regularly check if the water pressure is above 1 bar.

Refrigerant
This product contains fluorinated greenhouse gases. Do NOT vent gases into the atmosphere.

Refrigerant type: R32
Global warming potential (GWP) value: 675

NOTICE

Applicable legislation on fluorinated greenhouse gases requires that the refrigerant charge of the unit is indicated both in weight and CO2 equivalent.

Formula to calculate the quantity in CO2 equivalent tonnes: GWP value of the refrigerant x total refrigerant charge [in kg] / 1000

Please contact your installer for more information.

WARNING: FLAMMABLE MATERIAL

The refrigerant inside this unit is mildly flammable.

6.2 To find the contact/helpdesk number

1. Go to [8.3]: Information > Dealer information.

7.1 To display the help text in case of a malfunction

In case of a malfunction, the following will appear on the home screen depending on the severity:

? : Error
❗ : Malfunction

You can get a short and a long description of the malfunction as follows:

1. Press the left dial to open the main menu and go to Malfunctioning.

Result: A short description of the error and the error code is displayed on the screen.

2. Press ? in the error screen.

Result: A long description of the error is displayed on the screen.

7.2 Symptom: You are feeling too cold (hot) in your living room

7.3 Symptom: The water at the tap is too cold

7.4 Symptom: Heat pump failure

When the heat pump fails to operate, the backup heater and/or booster heater can serve as an emergency heater and either automatically or non-automatically take over the heat load.

When auto emergency is set to Automatic and a heat pump failure occurs:

• For EHVH/X: The backup heater will automatically take over the heat load and domestic hot water production
• For EHBH/X: The backup heater will automatically take over the heat load, and the booster heater in the optional tank will automatically take over the domestic hot water production.

When auto emergency is set to Manual and a heat pump failure occurs, the domestic hot water and space heating operation will stop and need to be recovered manually via the user interface. To recover operation manually, go to the Malfunctioning main menu screen, where the user interface will then ask you to confirm whether the backup heater and/or booster heater can take over the heat load or not.

When the heat pump fails, ❗ or ? will appear on the user interface.

INFORMATION

When the backup heater or booster heater takes over the heat load, electricity consumption will be considerably higher.

7.5 Symptom: The system is making gurgling noises after commissioning

(a) We recommend to purge air with the air purge function of the unit (to be performed by the installer). If you purge air from the heat emitters or collectors, mind the following:

WARNING

Air purging heat emitters or collectors. Before you purge air from heat emitters or collectors, check if ❗ or ? is displayed on the home screen of the user interface.

• If not, you can purge air immediately.
• If yes, make sure that the room where you want to purge air is sufficiently ventilated. Reason: Refrigerant might leak into the water circuit, and subsequently into the room when you purge air from the heat emitters or collectors.