Viessmann Vitodens 200-W and 300-W fault codes
Fault codes are displayed when the (heating) program has to be aborted due to a fault message. They indicate causes of faults as well as possible measures that should only be carried out by an authorised contractor.
As the owner of the system, however, you will receive a rough guide with the respective fault code and a corresponding brief description, so that you can better describe the situation to your contractor. To find a suitable trade partner in your area, simply use our trade partner search.
Fault codes should be analysed by a contractor
The following Viessmann fault codes refer to the 200 and 300 series of wall mounted gas boilers with Vitotronic control unit, including the Vitodens 200-W and Vitodens 300-W, as well as the Vitodens 222-W, the Vitodens 222-F and the Vitodens 333-F. Fault codes for newer models may differ. As mentioned at the beginning, fault codes and their possible measures only serve as a rough guide for system users. We strongly advise against carrying out the measures by yourself. After all,
- incorrectly executed work on the heating system can lead to life threatening accidents.
- If this is disregarded, the statutory warranty may become invalid.
- All adjustments and work on the appliance must be performed as specified in the respective operating instructions.
- Further work on the appliance may be carried out only by authorised contractors.
For information on how to make adjustments on your boiler and what you should pay attention to, please refer to the Viessmann operating instructions for your boiler. You can find these in our ViBooks database, for example.
As a general rule:
- Do not open the appliance
- Do not remove casings
- Do not modify or remove attachments or fitted accessories
- Do not open or tighten pipe connections
Viessmann fault codes do not apply to all heating systems
Note: the fault codes listed here apply exclusively to the gas condensing models of the 200 and 300 series with Vitotronic control unit. Solid fuel boilers, heat pumps, CHP units and other systems have their own fault codes. Furthermore, the following list does not claim to be complete and is intended only as a guide.
Look up fault codes online
You can also use our online database to look up the behaviour of the system and the cause of the fault for a displayed fault code. In addition to the fault code, you will need the part/serial number of your Viessmann product. You can find this on the control unit/product type plate.
Please contact your contractor if you have any questions and to remedy the cause of the fault. If your heating system is already connected to the ViCare app, you can simply forward the fault message to your contractor with one click.
Fault codes for 200 and 300 series wall mounted gas boilers with Vitotronic control unit
Note: some measures include coding addresses or coding groups. The setting of these codes may only be carried out by authorised contractors.