What does the Baxi Megaflo F22 fault code mean?
The F22 fault code on a Baxi Megaflo boiler indicates a dry fire condition or low water pressure within the system. This typically means that the boiler is unable to detect sufficient water flow, which can lead to overheating and potential damage.
Common Causes
- Low Water Pressure: This can occur due to leaks in the system or insufficient water supply, preventing the boiler from operating correctly.
- Air in the System: Trapped air can impede water flow, leading to a dry fire condition and triggering the F22 fault code.
Can I fix it myself? (DIY)
You can attempt to fix the low pressure issue by checking the pressure gauge on your boiler and re-pressurising the system if it is below 1 bar. If the problem persists or if you suspect gas or electrical issues, it is crucial to call a Gas Safe Engineer.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F22 fault code could be around £150 to £250, primarily for re-pressurising the system or fixing leaks. If a component replacement is necessary, costs may increase depending on the specific part required.