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F22 fault code - Causes explained and how to fix your boiler.
Seeing the F22 error code on your boiler? No worries – we explain what it means, guide you through the next steps, and show you how to keep the rare case of a fault code from happening again.
What does F22 mean on a Vaillant boiler?
The official description of a F22 fault on boilers like ecoTEC plus is "No/insufficient water in the product or the water pressure is too low."
Vaillant F22 error code explained
What causes a F22 fault on a Vaillant boiler?
If you find a F22 fault code, the underlying causes can usually be found in this list:
- Insufficient/no water in the product
- Fault in the electrical connection for the water pressure sensor
- Cable for the pump/for the water pressure sensor is loose/not connected/defective
- Water pressure sensor defective
- Pump operation interrupted
- Solenoid valve for the automatic filling device defectiveInternal expansion vessel defective
- Internal expansion vessel defective
Vaillant F22 reset
Fixing of F22 Fault code should be left to an expert.
Never attempt to repair a fault in your heating appliance yourself. This is dangerous and must be done by a qualified technician.
Our official recommendation on how to solve F22:
- Call your installer or check our partner list to find a local professional who can help you.
Professional service for F22
Be safe, trust the experts.
Our local partners are always ready to help. They’ll pinpoint your issue behind the F22 fault and quickly solve it for you, safely and professionally.
Preventing fault codes for Vaillant
Forget fault codes completely - to avoid fault codes, let service your device regular
Only one thing is better than fixing a fault: Never having one. Check up during an annual service keep your heating running smoothly and safely. And if a fault does occur, the installer usually knows exactly which component might be the cause.
Peace of mind, guaranteed.
- Save money.
Regular checks and live monitoring keep your heating running at its best. Plus, they help extend your boiler’s lifespan, saving you money year after year.
- Comfort tailored to you.
Our local partners fine-tune your heating system to match your exact needs - during every service visit.
- Safety comes first.
Arrange a service appointment with your installer well in advance. This will allow them to keep an eye on all the components of your heating system, and you’ll receive prompt assistance in the event of any error messages.
- Your preferred service.
In the long run, investing in regular servicing will save you money. This helps prevent your heating system from breaking down. Discuss with your engineer which service intervals and scope of work are right for you.
Smart heating at your fingertips with the myVaillant app.
The myVaillant app puts your heating system in the palm of your hand. Monitor performance, catch faults early, and prevent issues before they arise – all with a simple tap on your smartphone.
The easy way to manage your heating system. Just three steps:
1/3
- 1/3
Get in touch with your local installer to set up your myVAILLANT connect pack**.
**Only compatible with eBUS-equipped appliances from 2006 onwards. Be sure to confirm compatibility with your installer. - 2/3
After installation, simply connect your Vaillant heating system to your WiFi.
- 3/3
Download the myVaillant app, register, and activate your smart home subscription – all within the app.
