What does the Baxi Duo-tec F83 fault code mean?
The F83 fault code on a Baxi Duo-tec boiler indicates a domestic hot water (DHW) wiring fault. This typically suggests an issue with the electrical connections or components related to the hot water system.
Common Causes
- Wiring Issues: Damaged or loose wiring connections can disrupt the signal between the boiler and the DHW components.
- Faulty DHW Sensor: A malfunctioning sensor may fail to provide accurate readings, leading to the F83 fault code being triggered.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves electrical components that can be hazardous if not handled properly.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F83 fault could be around £150 to £250, primarily depending on whether wiring repairs or component replacements are necessary.