What to do if my Vaillant Controller displays an 'F. Boiler fault' code?
If your Vaillant Controller displays 'F. Boiler fault' followed by a specific fault code (e.g., F.33), it indicates a boiler fault. To resolve this, first reset the boiler by selecting 'Reset' and then confirming with 'Yes'. If the fault message continues to appear, inform a qualified technician.
What to do if my Vaillant Controller displays 'Back-up boiler if fault occurs'?
If the Vaillant Controller display shows 'Mode: Back-up boiler if fault occurs Heat pump (call the comp. person), insufficient heating-up of the heating and the domestic hot water', it means the heat pump is not working. In this case, inform a qualified technician and select the setting for limp home mode until the technician arrives.
How to deactivate the button lock on a Vaillant Controller?
If the Vaillant Controller display shows 'Button lock activated', you won't be able to change any settings. To deactivate the button lock, press the button on the top right of the system control for approximately one second.
What to do if the Vaillant Controller is not responding to control elements?
If you cannot make any changes in the display via the control elements on your Vaillant Controller, it may be due to a software error. Try these steps: 1. Press and hold the button on the top right of the system control for longer than five seconds to force a restart. 2. Switch off the mains switch on all heat generators for about 1 minute and then switch them back on. 3. If the problem persists, contact a qualified technician.
Why is the display on my Vaillant Controller dark?
If the display on your Vaillant Controller remains dark, it could be due to a software error. Here are a few things you can try: 1. Press and hold the button on the top right of the system control for longer than five seconds to force a restart. 2. Switch off the mains switch on all heat generators for approximately 1 minute, and then switch them back on. 3. If the display remains dark, contact a qualified technician.
How to change the language on a Vaillant Controller?
If you do not understand the language set on your Vaillant Controller, follow these steps to change it: 1. Press the button twice. 2. Select the last menu item (SETTINGS) and confirm by pressing the button. 3. Under SETTINGS, select the second menu item and confirm by pressing the button. 4. Select the language you understand and confirm by pressing the button.
Provides crucial safety guidelines and warnings for users.
Outlines safety regulations and directives to be observed.
Describes the device's display, buttons, and common symbols.
Details how to connect the system control to the ventilation unit.
Guides through the physical installation of the system control and sensor.
Shows terminal connections for the FM5 functional module.
Describes how to respond to heating pump faults.
Explains how fault messages are displayed and found.
Explains how maintenance messages are displayed.
Lists common symptoms, causes, and solutions for issues.
Details maintenance messages and required actions.
Lists common symptoms, causes, and solutions for issues.
Lists common symptoms, causes, and solutions for issues.
Details maintenance messages and required actions.
General| Mounting | Wall-mounted |
|---|---|
| Protection class | IP20 |
| Compatibility | Vaillant heat pumps |
| Connectivity | eBUS |
| Control | Touchscreen |
| Operating voltage | 230 V |
| Dimensions (Depth) | 30 mm |
| Operating Temperature Range | 0°C to +50°C |
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