How to fix Viessmann Vitodens 200-W fault code F44

What does the Viessmann Vitodens 200-W F44 fault code mean?

The F44 fault code on the Viessmann Vitodens 200-W indicates a problem with the control board, which is responsible for managing the boiler’s operations. This fault can lead to the boiler failing to operate correctly, resulting in heating and hot water issues.

Common Causes

  • Electrical Faults: Issues such as short circuits or damaged wiring can affect the control board’s functionality.
  • Component Failure: Components on the control board, such as relays or capacitors, may fail, leading to improper operation.

Can I fix it myself? (DIY)

It is strongly advised to call a Gas Safe Engineer for any repairs related to the control board, as these involve electrical components and gas safety regulations. Attempting to fix it yourself could pose serious safety risks.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for a faulty control board on a Viessmann Vitodens 200-W is approximately £400 to £600. This includes the cost of the replacement part and labour, reflecting the complexity of the repair and the need for professional expertise.