To set the operating programmes of your heat pump

Save energy and costs with operating programmes: At the end of the heating season, activate the hot water mode on your heat pump so that it only provides hot water during summer operation. Are you going on holiday? Remember to turn on the ECO mode of your heat pump! Our help video shows you how.

Set operating modes: Step by step

1. After pressing the menu button for 3 seconds, the controller can be unlocked and settings can be made. 

2. In the lower area of the start view of the controller, the different operating modes can be viewed and changed via the rotary control. 

3. Turn the control dial until you have reached the desired operating mode. 

4. The selected operating mode is activated by confirming with the "OK" key.

Set operating modes: Tips for comfort, ECO and hot water operation

1. Comfort mode: We recommend this operating mode if you live in a low-energy house and no temperature reduction is necessary. The heating circuit (HK) is kept at a constant comfort temperature (heating circuit 1 and heating circuit 2). Hot water is prepared according to the time programme.

2. ECO operation: Energy-saving tip during your weekend holiday! The heating circuit is kept at a constant ECO temperature (heating circuit 1 and heating circuit 2). Hot water is prepared according to the time programme.

3. Hot water mode: The heating period is over and you only need hot water in your home (summer mode). In this operating programme, the hot water is heated according to the time programme. If a time programme is active, the water in the hot water tank is heated to the comfort setpoint. During the other times, the water is heated to the ECO setpoint. The frost protection function is activated for heating operation.

To set your comfort temperature and your heating programme with comfort and ECO mode on your heat pump

You can set your comfortable temperature quickly and easily on the controller of your heat pump. Energy-saving tip for your heat pump: Use your individual heating programme to heat only when you really need it. In ECO mode, a lower room temperature is defined than in comfort mode. This saves energy costs! You can set the ECO temperature, for example, during the day when you are not in the house for a few hours, or at night - during these periods the room temperature is then lowered to the value you set. Our help videos show you how to do this.

Set room temperature: Explained step by step

1. After pressing the menu button for 3 seconds, the controller can be unlocked and settings can be made. 

2. The menu item "Settings" then takes you to the submenu where you can set the temperatures for your various heating circuits under the heading "Heating" (depending on the system configuration, up to 2 heating circuits are available).

3. Now set the comfort temperature and the eco temperature here and confirm your entry with "OK".

4. You can then use the "MENU" key to go back to the previous menu levels until you have reached the start view again.

The current ACTUAL room temperature for your heating circuits is displayed on the Start screen, for example, under the item "ACTUAL TEMPERATR HK 1". A change in the room setpoint temperature causes a parallel shift of the heating curve. The higher the room setpoint temperature is set, the higher the energy costs you must expect.

Setting the heating programme: Saving energy costs, using the ECO function

In the HEATING PROGRAM menu item, you can define for the different heating circuits when and how often the unit is to heat with the comfort setpoint (room temperature). At other times, the unit heats with the ECO setpoint. You have the option of setting your heating for: 

• every single day of the week (Monday - Sunday)

• Monday - Friday (Mon - Fri)

• Saturday and Sunday (Sat - Sun)

• the whole week (Mon - Sun)

You can now set three switching time pairs per day. The three switching time pairs are listed in the display to the right of the clock. A switching time pair consists of the start time and the end time at which the unit returns to the previous state. The time is entered with a step width of 15 minutes.

Setting the heating programme: Explained step by step

1. After pressing the menu button for 3 seconds, the controller unlocks.

2. Via "Programmes" you reach the submenu where you set the time periods for your different heating circuits in "Heating programme". Depending on the system configuration, up to 2 heating circuits are available.

3. Now select individual weekdays or fall back on our predefined settings. To fall back on the latter, turn the operating circle until you have passed the individual selection of weekdays. Confirm your selection with the "OK" button.

4. Set the start and end time for the switching time you have selected via the rotary control at which the comfort heating mode is to be active and confirm your entry with "OK".

Press the "MENU" button to return to the start view. Unfortunately, a setting beyond midnight (00:00) is not possible - you must set two switching times for this application.

To set your hot water comfort temperature and your hot water programme with comfort and ECO mode on your heat pump

You can set your hot water comfort temperature quickly and easily on the controller of your heat pump. Energy-saving tip for your heat pump: Use your individual hot water programme to only use high-temperature water when you really need it. In ECO mode, a lower hot water temperature is defined than in comfort mode. This saves energy costs!

Setting the water temperature: Explained step by step

1. After pressing the menu button for 3 seconds, unlock the controller unlocked 

2. You can access the "Hot water" submenu via "Settings".

3. To set your desired hot water temperature, select "Hot water temperatures" in the 4th menu level. 

4. Now set the comfort temperature and the ECO temperature for your hot water preparation. Confirm your entries with "OK".

5. Click on "Menu" to return to the standard view.

The current hot water temperature is displayed on the start screen under the item "WW-ISTTEMPERATURE".

Notes

• The higher the hot water setpoint temperature is set, the higher the energy costs you should expect.

• If the desired/set hot water temperature is not reached, please contact your specialist tradesman. 

Please note that anti-legionella treatment may be required if hot water is drawn irregularly. You will find information on this in our operating and installation instructions. If you have any further questions, please contact your specialist tradesman.

Save costs and energy with your individual hot water programme

In the "Hot water programme", you define the times during which hot water is to be prepared with the comfort setpoint. During the other times, the hot water is prepared with the ECO setpoint. What does this mean exactly? In ECO mode, a lower hot water temperature is defined than in Comfort mode and can therefore always be used when there is no need for hot water. This saves energy and costs! 

You have the option of setting the water heating for:

• every single day of the week (Mon - Sun)

• Monday - Friday (Mon - Fri)

• Saturday and Sunday (Sat - Sun)

• the whole week (Mon - Sun)

For each of these options, you can set three switching time pairs per day. The time is entered with a step width of 15 minutes.

Setting the hot water programme: explained step by step

1. After pressing the menu button for 3 seconds, unlock the controller. 

2. You can access the "Hot water programme" submenu via "Programmes". 

3. Select individual days of the week or access our predefined settings. To fall back on our predefined settings, turn the operating circle until you have exceeded the individual selection of all weekdays. Confirm your selection with the "OK" button.

4. After enabling the setting option, set your desired START and END time for the hot water programme by means of the "OK test" using the rotary control.

5. After you have selected the START time, confirm this by pressing "OK"-.

6. Use the rotary control to navigate to the END time, unlock with "OK" and set the END time. 

Press the menu button to return to the standard view. The time switching pairs should be selected so that complete heating of the water tank is possible between switching on and off (at least 3 hours). A setting beyond midnight (00:00) is unfortunately not possible - you must set two switching times for this application.

To set the cooling function of your heat pump

Is your heat pump suitable for cooling mode? Our help video shows you how to activate or deactivate this function on your heat pump.

Setting the cooling function: Explained step by step

1. After pressing the menu button for 3 seconds, the controller unlocks itself 

2. Via "Settings" you reach the submenu where you can activate or deactivate your cooling function under "Cooling". 

3. To make the setting here, enter the code "1000". Use the rotary control to set the digits, confirm with "OK" and jump to the next digit. 

4. The cooling function is switched on or off via the rotary control, confirm your selection with "OK". 

5. Click on "Menu" to return to the standard view. 

When the cooling function is activated, the symbol of a "snowflake" appears on the start screen. Your heat pump is now in cooling mode and cools your home. The heat pump manager WPM of your heat pump must be in "SUMMER OPERATION" mode for the heat pump to start cooling operation. If the cooling parameters are not visible or the cooling function cannot be activated properly, please contact your specialist tradesman. He will check the necessary components for cooling operation and the necessary controller settings.

The first step to rectifying a malfunction

Your heat pump reports a malfunction? Tip: Press the reset button. Activating the reset button resets the error that has occurred. The compressor starts up again. The error remains stored in the error list. Sometimes the heat pump can already be made to run again by this. Our help video shows you how to do it!

Set the reset of the heat pump: Explained step by step

1. After pressing the menu button for 3 seconds, unlock the controller.

2. You can access the "Reset" submenu via the "Commissioning" menu item. 

3. Select "Heat pump" in the reset menu. The default setting is "OFF". To be able to make the setting here, enter the code "1000". Select the individual digits via the rotary control, confirm with "OK" and then jump to the next digit. 

4. The reset function is also switched on or off via the rotary control. Confirm "OK

5. The setting is "ON". The controller reset is carried out.

6. After the controller has been reset, the setting in the menu overview jumps back to "OFF". 

7. Use the menu button to go back to the previous menu levels until you reach the standard view again.

Your heat pump displays an error message?

In the event of an error message, specifying the error(s) or the software statuses can already be very helpful for your specialist tradesman or our factory customer service. The error list gives you an overview of the errors registered by the unit in the recent past. The error list contains up to 20 error messages. Our help video shows you how to read out the error list of your heat pump.

Read out error list: Explained step by step

1. After pressing the menu button for 3 seconds, unlock the controller. 

2. Select "Diagnosis", scroll down to the "Message list".

3. The small number next to the name of the menu item "Message list" already shows you how many error messages have been logged. 

4. The error messages are displayed in a table. In addition to the error code, the date and time when the error message was logged are listed. Pass this information on to your specialist tradesman or our factory customer service.

5. Use the menu button to go back until you reach the standard view again.

Please always state the error code(s) when commissioning your specialist tradesman or the factory customer service!

Tip: In the "Help for self-help" section, by entering your unit data and error message, you can already receive initial information and recommendations for action regarding your messages.

No more heating or hot water?

With the emergency operation of your heat pump, you have the possibility to bridge the malfunction for a certain time by means of an electric insert. If your heat pump has an electric heating element, you can find the instructions for activating emergency operation here.

Set emergency operation

1. After pressing the menu button for 3 seconds, the controller unlocks.

2. In the lower section of the start view of the controller, you can see the different operating modes and change them using the rotary control. 

3. Turn the control knob until you have reached the emergency mode.

4. The selected operating mode is activated by confirming with the "OK" key. 

5. You have selected the emergency mode? The corresponding symbol of the electric emergency/auxiliary heating is displayed on the start view of the controller.

6. Your heat pump is in emergency mode. Now contact your specialist tradesman to rectify the fault.

Please note that the emergency operation only heats electrically and cannot be used permanently. Emergency operation is only for bridging purposes and is the responsibility of the system owner. Contact your specialist tradesman to remedy the fault.

To set the operating programmes of your integral ventilation unit

Save energy and costs with operating programmes: At the end of the heating season, activate the hot water mode on your LWZ integral ventilation unit so that the LWZ only provides hot water. Are you going on holiday? Use the setback mode (night mode) to reduce the room temperature and save energy. Our help video shows you how.

Set operating modes: Step by step

1. After pressing the menu button for 3 seconds, the controller can be unlocked and settings can be made. 

2. In the lower area of the start view of the controller, the different operating modes can be viewed and changed via the rotary control. 

3. Turn the control dial until you have reached the desired operating mode. 

4. The selected operating mode is activated by confirming with the "OK" key.

Set operating modes: Tips for day, night and hot water operation

1. Daytime mode: We recommend these operating modes during the day when there are people in the house. In daytime mode, the heating is operated with the set daytime setpoints. Hot water preparation and ventilation are not affected by day mode. They always run according to the set time programme.

2. Setback mode (night mode): We recommend this operating mode for the night period or during the day when no one is present in the house.  In setback mode (night mode), the heating is operated with the set night setpoints. The hot water preparation and the ventilation are not affected by the setback mode. They always run according to the set time programme.

3. Hot water mode: We recommend this operating mode when the heating period is over and only hot water is to be provided (summer mode). Hot water operation is activated according to the set time programmes. The daytime setpoint for hot water is approached for the current switching time pair. The heating is switched off except for the frost protection function. The ventilation is not affected by the hot water operation.

To set your individual room temperature and heating programme on your LWZ integral ventilation unit

Set your desired temperature quickly and easily on the controller of your LWZ integral ventilation system. Energy-saving tip for your LWZ: Use your individual heating programme to heat only when you really need it. In night mode, a lower room temperature is defined than in day mode. You can set the room temperature for night mode, for example, during the day when you are not in the house for a few hours, or at night - during these periods the room temperature is then lowered to the value you set. Our help video explains the relevant settings step by step.

Set the room temperature on your central heating system: Explained step by step

1. After pressing the menu button for 3 seconds, the controller can be unlocked and settings can be made. 

2. The menu item "Settings" then takes you to the submenu where you can set the temperatures for your various heating circuits under the heading "Heating" (depending on the system configuration, up to 2 heating circuits are available).

3. Now set the room temperature day (RT-TAG HK1) and the room temperature night (RT-NACHT HK1) and confirm your entry with "OK".

4. You can then use the "MENU" key to go back to the previous menu levels until you have reached the start view again.

The current ACTUAL room temperature for your heating circuits is displayed on the Start screen, for example, under the item "ACTUAL TEMPERATR HK 1". A change in the room setpoint temperature causes a parallel shift of the heating curve. The higher the room setpoint temperature is set, the higher the energy costs you must expect.

Setting the heating programme: Saving energy costs, using the ECO function

In the HEATING PROGRAM menu item, you can define for the different heating circuits when and how often the unit is to heat with daytime heating mode (room temperature). At other times, the unit heats with night mode. You have the option of setting your heating for: 

• every single day of the week (Mon - Sun)

• Monday - Friday (Mon - Fri)

• Saturday and Sunday (Sat - Sun)

• the whole week (Mon - Sun)

You can now set three switching time pairs per day. The three switching time pairs are listed in the display to the right of the clock. A switching time pair consists of the start time and the end time at which the unit returns to the previous state. The time is entered with a step width of 15 minutes.

Set the heating programme on your central heating unit: Explained step by step

1. After pressing the menu button for 3 seconds, the controller unlocks.

2. Via "Programmes" you reach the submenu where you set the time periods for your different heating circuits in "Heating programme". Depending on the system configuration, up to 2 heating circuits are available.

3. Now select individual weekdays or fall back on our predefined settings. To fall back on the latter, turn the operating circle until you have passed the individual selection of weekdays. Confirm your selection with the "OK" button.

4. Set the start and end time for the switching time you have selected via the rotary control at which the daytime heating mode is to be active and confirm your entry with "OK".

Press the "MENU" button to return to the start view. Unfortunately, a setting beyond midnight (00:00) is not possible - you must set two switching times for this application.

Step by step to the desired hot water temperature

You can set the right hot water temperature for your home quickly and easily on the controller of your integral ventilation unit. Energy-saving tip for your central heating system: Use your individual hot water programme. In night mode, a lower hot water temperature is defined for your central heating system than in day mode and can therefore always be used when there is no need for hot water. This saves energy costs!

Setting the water temperature: Explained step by step

1. After pressing the menu button for 3 seconds, unlock the controller.

2. You can access the "Hot water" submenu via "Settings".

3. To set your desired hot water temperature, select "Hot water temperatures" in the following menu level. 

4. Now set the hot water setpoint temperature for daytime operation (WW-SOLL-TAG) and the hot water setpoint temperature for nighttime operation (WW-SOLL-NACHT). Confirm your entries with "OK".

5. Click on "Menu" to return to the standard view.

The current hot water temperature is displayed on the start screen under the item "WW-ISTTEMPERATURE".

Notes

• The higher the hot water setpoint temperature is set, the higher the energy costs you should expect.

• If the desired/set hot water temperature is not reached, please contact your specialist tradesman. 

Please note that anti-legionella treatment may be required if hot water is drawn irregularly. You will find information on this in our operating and installation instructions. If you have any further questions, please contact your specialist tradesman.

Save costs and energy with your individual hot water programme

In the "Hot water programme", you define the times during which hot water is to be prepared with the comfort setpoint. During the other times, the hot water is prepared with the ECO setpoint. What does this mean exactly? In ECO mode, a lower hot water temperature is defined than in Comfort mode and can therefore always be used when there is no need for hot water. This saves energy and costs! 

You have the option of setting the water heating for:

• every single day of the week (Mon - Sun)

• Monday - Friday (Mon - Fri)

• Saturday and Sunday (Sat - Sun)

• the whole week (Mon - Sun)

For each of these options, you can set three switching time pairs per day. The time is entered with a step width of 15 minutes.

Setting the hot water programme: explained step by step

1. After pressing the menu button for 3 seconds, unlock the controller. 

2. You can access the "Hot water programme" submenu via "Programmes". 

3. Select individual days of the week or access our predefined settings. To fall back on our predefined settings, turn the operating circle until you have exceeded the individual selection of all weekdays. Confirm your selection with the "OK" button.

4. After enabling the setting option, set your desired START and END time for the hot water programme by means of the "OK test" using the rotary control.

5. After you have selected the START time, confirm this by pressing "OK"-.

6. Use the rotary control to navigate to the END time, unlock with "OK" and set the END time. 

Press the menu button to return to the standard view. The time switching pairs should be selected so that complete heating of the water tank is possible between switching on and off (at least 3 hours). A setting beyond midnight (00:00) is unfortunately not possible - you must set two switching times for this application.

To set the cooling function of your integral ventilation unit LWZ

LWZ integral ventilation unit is suitable for cooling mode? Our help video shows you how to activate or deactivate this function on your LWZ.

Setting the cooling function: Explained step by step

1. After pressing the menu button for 3 seconds, the controller unlocks itself 

2. Via "Settings" you reach the submenu where you can activate or deactivate your cooling function under "Cooling". 

3. Select the menu item "COOLING OPERATION HK1" or "COOLING OPERATION HK2" in order to be able to carry out the setting in the following menu level of the same name. 

4. The cooling function is switched on or off via the rotary control, confirm with "OK". 

5. Click on "Menu" to return to the standard view. 

When the cooling function is activated, the symbol of a "snowflake" appears on the start screen. Your heat pump is now in cooling mode and cools your home. The integral ventilation unit LWZ must be in "SUMMER OPERATION" mode so that cooling operation can be started. If the cooling parameters are not visible or the cooling function cannot be activated properly, please contact your specialist tradesman. He will check the necessary components for cooling operation and the necessary controller settings.

Your LWZ integral ventilation unit controls fully automatically when and for how long the ventilation is in operation. However, you can let the ventilation run unscheduled via the quick access "Ventilation levels" or reduce the ventilation during your holiday and set it individually accordingly. Our help videos show you how.

Adjusting the fan vents of your AHU - this is how it works

1. After pressing the menu button for 3 seconds, unlock the controller.

2. The menu item "Settings" takes you to the submenu where you can make various settings under the heading "Ventilate". 

3. Navigate to the subitem "Fan speed". Here you select between the setting options (fan level-day, fan level-night, fan level-standby, fan level-party, fan level-hand) to set them on a scale of 0-3.

You can then return to the standard view by pressing the menu button.

LWZ: Fan stages explained

Level 0 | Ventilation for moisture protection Moisture protection is recommended when you are not at home and the moisture/fabric load is reduced.  Laundry should not be dried in the room during this time. The ventilation system is set with this fan stage so that the minimum operation protects the building fabric from mould growth.

Level 1 Reduced ventilation Use the fan speed when you are temporarily away from home. The minimum hygienic requirements are guaranteed with this fan stage. However, the humidity and fabric load in your home should be reduced accordingly.

Stage 2 | Nominal ventilation Your ventilation system operates in normal mode. With nominal ventilation you can ensure the hygienic requirements as well as the requirements of building protection.

Level 3 | Intensive ventilation Secondary necessary ventilation with increased air volume flow to ventilate intensive odours or moisture out of your home. In addition, you can support the air exchange with manual window ventilation. 

Note The higher the fan level, the higher the noise level.

Save costs and energy with your individual fan programme

In the FAN PROGRAM menu item, you can define when and how often the unit should operate in day mode (fan stage). At other times, the unit ventilates in night mode. You have the option of setting your fan programme for: 

• every single day of the week (Mon - Sun)

• Monday - Friday (Mon - Fri)

• Saturday and Sunday (Sat - Sun)

• the whole week (Mon - Sun)

You can now set three switching time pairs. The three switching time pairs are listed in the display to the right of the clock. A switching time pair consists of the start time and the end time at which the unit returns to the previous state. The time is entered with a step width of 15 minutes.

Set fan programme

1. After pressing the menu button for 3 seconds, unlock the controller. 

2. The menu item "Programmes" then takes you to the submenu where you set the time periods for your different fan levels under the heading "Fan programme". 

3. Different switching times, i.e. possible setting periods, are now available to you. Select individual weekdays or fall back on our predefined settings. To fall back on our predefined settings, turn the operating circle until you have exceeded the individual selection of all weekdays. Confirm your selection with the "OK" key.

4. Now set the start and end time for the switching time you selected via the rotary control at which the fan speed day should be active and confirm your entry with "OK".

You can then use the "MENU" key to go back to the previous menu levels until you have reached the start view again. Unfortunately, a setting beyond midnight (00:00) is not possible - you must set two switching times for this application.

Change filter, reset filter setting and enjoy fresh, filtered air

After a certain running time, depending on the individual use, your LWZ integral ventilation unit recommends a filter change. This message is time-controlled and depends on the air volume flow. Change the filters quickly and easily and then set the filter settings to reset. Our help video explains how.

Step 1: Change filter

• The door lock of the LWZ is located above the integral ventilation unit. To release the door lock, first pull the latch up from behind and then push up the front part and fold the latch back. 

• Open the door. Here you see two filter cassettes whose filters you are replacing.

• Reach with two fingers into the finger holes of the filter cassettes and pull them out. Now replace the filters.

• Then put the filter cassette back into the unit.

Step 2: Reset the filter settings

• After pressing the menu button for 3 seconds, unlock the controller.

• In the main menu, select "Settings" and then "Ventilation

• Navigate with the rotary control to "Service" and then down to "Reset Filter".

• Turn the knob to change the setting to "ON" and confirm with "OK". The filter reset is carried out.

• As soon as the filter reset has been carried out, the set value changes to "OFF".

• Use the menu button to return to the previous menu level until you reach the standard view.

Notes

• Make sure that you do not mix up the exhaust air filter and the supply air filter when inserting them into the unit. Tip: The filter cassette of the exhaust air filter (upper filter) has two finger holes on the front.

• Pay attention to the correct flow direction of the filters. This is marked on the filter.

The first step to rectifying a malfunction

Is your water heater reporting a malfunction? Tip: Press the reset button. Activating the reset button resets the error that has occurred. The compressor starts up again. The error remains stored in the error list. Sometimes the air-conditioning unit can be restarted just by pressing the reset button. Our help video shows you how to do it!

Set the reset of the LWZ: Explained step by step

1. After pressing the menu button for 3 seconds, unlock the controller.

2. Use the menu item "Settings" to access the submenus "Commissioning" and "Controller". Perform the reset under "Reset controller".

3. To be able to make settings here, enter a code. This is "1000". You can use the rotary control to set the digits of the code and then confirm them with "OK" and jump to the next digit. 

4. The reset function is switched on or off via the rotary control. Confirm this with "OK". You will now see that the setting has changed to "ON". 

5. After the controller reset has been carried out, the setting in the menu overview jumps back to "OFF". 

6. Use the menu button to go back to the previous menu levels until you reach the standard view again.

If the integral ventilation unit LWZ still does not function properly after the controller reset, contact your specialist tradesman. To the specialist tradesman search

Your integral ventilation unit displays an error message?

The error list gives you an overview of the errors registered by the unit in the recent past. The error list contains up to 10 error messages. Turn the touch wheel to view all entries in the error list. The display within the error list contains the error code with date and time. Our help video shows you how to read out the error list of your LWZ.

Read out error list: Explained step by step

1. After pressing the menu button for 3 seconds, unlock the controller. 

2. Select "Specialist", scroll down to "Error list" and then select "Troubleshooting".

3. The error messages are displayed in a table. In addition to the error code, the date and time when the error message was logged are listed. Pass this information on to your specialist tradesman or our factory customer service.

4. Use the menu button to go back until you reach the standard view again.

Please always state the error code(s) when commissioning your specialist tradesman or the factory customer service!

Tip: In the "Help for self-help" area, by entering your unit data and error message, you can already receive initial information and recommendations for action regarding your messages.

Your LWZ integral ventilation unit reports a malfunction?

1. After pressing the menu button for 3 seconds, the controller unlocks.

2. In the lower section of the start view of the controller, you can see the different operating modes and change them using the rotary control. 

3. Turn the control knob until you have reached the emergency mode.

4. The selected operating mode is activated by confirming with the "OK" key. 

5. You have selected the emergency mode? The corresponding symbol of the electric emergency/auxiliary heating is displayed on the start view of the controller.

6. Your integral ventilation unit is in emergency mode. Now contact your specialist technician to remedy the fault.

Please note that the emergency operation only heats electrically and cannot be used permanently. Emergency operation is only for bridging purposes and is the responsibility of the system owner. Contact your specialist tradesman to remedy the fault.