How to fix Baxi Duo-tec fault code F61

What does the Baxi Duo-tec F61 fault code mean?

The F61 fault code on a Baxi Duo-tec boiler indicates a fault with the domestic hot water (DHW) pump. This typically means that the pump is either not functioning correctly or has failed, affecting the boiler’s ability to provide hot water.

Common Causes

  • Blocked DHW Pump: Debris or scale buildup can obstruct the pump, preventing it from operating effectively.
  • Electrical Fault: Issues with the wiring or connections to the pump can lead to a failure in operation.

Can I fix it myself? (DIY)

It is recommended to call a Gas Safe Engineer for this issue, as it involves electrical components and potential gas safety risks. Attempting repairs without proper qualifications can be dangerous.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for fixing the DHW pump fault on a Baxi Duo-tec boiler is approximately £250. This includes the cost of a replacement pump and labour, reflecting the complexity of the repair and the need for a qualified technician.