If you're seeing an F22 fault code on your Vaillant Ecotec boiler, don't worry – this is typically a simple fix you can handle yourself. As Coventry's trusted heating experts since 2007, we're here to guide you through the process of topping up your boiler's pressure.

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What Causes Low Pressure?

The F22 fault code indicates low system pressure, which can occur due to:

• Air in the system (common after servicing)
• Recent radiator or pipework modifications
• Radiator bleeding
• Normal pressure loss over time

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Identifying Your Boiler Model

Before starting, identify whether you have:

• Ecotec Pro: Features an external filling loop on the pipes leading to the boiler
• Ecotec Plus: Has a built-in filling loop underneath the boiler with a flap covering the controls

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Step-by-Step Pressure Adjustment

1. Locate the Pressure Display
   • Find the inverted cone display (digital models)
   • Look for the mechanical gauge near the on/off switch (older models)
   • Aim for the pressure level between the two dotted lines
2. Using the Filling Loop
   • Open both taps gradually
   • Watch the pressure gauge
   • Stop when the indicator reaches the middle of the recommended range
3. Completing the Process
   • Close both valves to their original positions
   • The F22 fault should disappear automatically
   • If needed, press the reset button (marked with a flame and cross symbol)

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When to Call a Professional

While occasional pressure top-ups are normal, frequent adjustments might indicate an underlying issue. If you find yourself repeatedly adding pressure between services, it's time to call our expert team for a thorough inspection.

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Need Additional Help?

Our experienced engineers are just a phone call away at 024 7667 7667. With over 25 years of industry experience and coverage across Coventry, Nuneaton, Rugby, and surrounding areas, we're here to ensure your heating system runs efficiently and reliably.

Remember, proper maintenance is key to preventing issues. Book your annual service with JLN Plumbing & Heating Limited to keep your boiler running at its best.