Hermann Boiler Error F22

What does this error code that affects Hermann boilers mean?

Hermann heating devices are appliances designed to provide warmth and comfort to the home space, but they are not exempt from issues that may require our intervention. These setbacks can affect the performance of the equipment, preventing its proper operation or even stopping its operation completely.

A common fault that may occur in Hermann boilers is the F22 error code, which indicates that the safety system has been triggered due to a water supply failure, meaning the boiler does not detect water or detects very low water pressure and shuts off to prevent further issues. Throughout this article, we will break down the reasons that can cause this problem and offer you the best alternatives to find a solution.

This problem can undoubtedly be frustrating and a headache for you, but you don't have much to worry about. The first thing you need to know are the causes of this fault, in order to find an appropriate solution. Below, we present the possible causes and how you could address them properly:

• An interruption in the water supply or insufficient water flow or pressure: The most common reason for this inconvenience is the absence of water in the distribution mechanism of your Hermann boiler. You may be experiencing a disruption in the water service or the water may not be reaching the boiler with the necessary pressure.
• A closed or partially open water shut-off valve: A shut-off valve that is closed can interrupt the flow of water to your boiler. Perhaps you accidentally closed it or it is not fully open, resulting in minimal water flow through the pipes.
• An issue with the water inlet valve: This valve manages the entry of water into the heating system of your boiler. If it is damaged or blocked, it can result in insufficient water pressure, causing this type of error to appear on your boiler's screen.
• A blockage in the hoses or ducts of the boiler's water circuit or in the filters: It is possible that the ducts are blocked or obstructed by residues carried by the water or by accumulation of minerals and sediments. The same can happen with the water inlet filter to the boiler.
• A water leak or loss in the heating circuit of your boiler: Even a minimal leak can decrease the water pressure in the system, so it is crucial to ensure that this does not occur. There should be no water leaks anywhere in the system and of any kind.

These are the factors that can cause a failure in your Hermann boiler. Now, we will explore the alternatives you have available to remedy this problem.

How could I solve the F22 error code of the Hermann boiler?

Today we have prepared for you a list of possible solutions to fix this issue with your boiler. You don't have to consider your boiler lost; usually, these types of water-related problems are straightforward to solve:

1. Turning off and disconnecting the boiler can help solve the problem, as it resets the sensors: This procedure is the simplest and should be our first step. It involves resetting the boiler's sensors. To do this, you need to completely turn off your boiler and disconnect it from the power outlet for a few minutes. Wait for about 15 minutes and reconnect it. Turn it on and check if the error has disappeared. If the problem persists, then you will have to move on to the other steps we have outlined below.
2. Verify that the water supply is active and functioning normally: Open any other water tap in your home or office, such as the sink, dishwasher, etc., to check that you have a working water supply. In case of a water supply cut, contact the company that supplies you with this vital liquid to confirm if the cut was due to a billing issue or scheduled maintenance in your area. Also, check that the water supply valve, both the general one for your entire home or office, and the one that supplies only the boiler, is fully open. If these valves are partially open, please open them completely to ensure a smooth and constant water supply to your boiler.
3. Inspect the filling valve or water inlet valve on your Hermann boiler: As a general rule, these valves are located at the water inlet of your boiler. Check them thoroughly and clean them under a stream of clean water, with a little soap and some vinegar to remove impurities. If you notice lime or sediment buildup, use a bristle brush to remove everything that is stuck. If you find that the valve is not working properly, then replace it with a new one and check if the water flow is constant and smooth for your boiler.
4. Clean the hoses, filters, and perform maintenance on the entire water circuit: Hoses often get clogged with the same dirt that comes from the street pipeline, and the same happens with the water inlet filter. If you notice that the filter is heavily calcified, you can try to clean it with a bristle brush, water, soap, and a little vinegar, although we recommend replacing it instead, as this spare part is easy to find and not expensive at all. Check the hoses thoroughly and look for possible obstructions inside them. If you find that the hoses are clogged, you can try to unclog them using a wire, inserting it from one end to try to remove or push out through the other end of the hose anything that may be obstructing it. We advise you to perform this wire procedure with great care so as not to damage the hose, although you could also replace it without any problem.
5. Check the water circuit of the Hermann boiler for unwanted leaks: Make sure the boiler does not have any leaks in the entire water circuit. To do this, you will have to check the hoses, joints, elbows, connections, filters, and valves, everything. Check the water circuit, and if you find any leaks, make the necessary repairs or replace the affected component with a new one to prevent leaks in the future. Remember that the F22 error code is due to a system alert due to a water leak or a supply failure, so having leaks in the circuit can be detrimental to the proper functioning of your boiler.
6. If the problem with your boiler persists, go over each step we have explained in this article: Make sure you have not omitted any point or detail that we have mentioned in this guide. Check everything thoroughly and follow the steps to the letter. If you still cannot find the solution, then it may be time to seek help from an expert in the field. A qualified professional or the official Hermann technical service can help you diagnose and solve the problem accurately.
7. If the problem persists, then let's give the experts a call and find the solution: A qualified technician or the official Hermann technical service can help you fix the problem with the boiler. Their experience and knowledge, along with the tools and original spare parts they have, will guarantee you an effective repair. You can contact Hermann's technical support by phone and request a home visit. Give your Hermann boiler a new lease on life; it's worth fixing it completely.

To conclude, we know that the F22 error code on Hermann boilers is due to insufficient water pressure, which can be caused by supply failures or insufficient flow. The causes can vary from a supply failure due to a cut to water leaks inside the boiler. To fix it, make sure to follow all the steps we have in this guide.

And that's all for today! We hope this article has been helpful in finding the solution you needed and fixing your Hermann boiler without any inconvenience once and for all. We understand how important hot water can be in your home, and that's why we wanted to help you. Thank you for reading this far. Until next time!