F22 Fault Code Glow-worm Boiler

Boilers are machines. Even the most reliable and well-maintained boilers can encounter issues from time to time.
Let's find out what is the F22 error code in the Glow-worm boiler.
🔍 What is the F22 error code?
[LOW WATER PRESSURE]
This error code pops up when your boiler detects low water pressure in your central heating system. When this happens, the F22 code shows up, usually signalling a pressure drop. Most of the time, this pressure loss is due to a leak somewhere in the central heating pipes.
🛠️ Possible Causes:
Let's see what causes the F22 error.
[LOW PRESSURE IN THE BOILER]
One of the most common reasons for the F22 fault code in Glow-worm boilers is low water pressure. Boilers need consistent water pressure to circulate hot water effectively. When the pressure drops too low, the system can't function as it should. This might be due to a leak, an issue with the pressure release valve, or simply the need to top up the water in the system.
[BLOCKAGES IN WATER CIRCULATION]
Another cause of the F22 fault is blockages in the system. Debris, sludge, or limescale can build up in the pipes, reducing water flow. When the boiler detects insufficient water movement, it triggers the F22 fault code.
[AIR TRAPPED IN THE SYSTEM]
Trapped air in the system can also cause the F22 fault. Air bubbles in the pipes can disrupt water flow and pressure. This often happens after bleeding radiators or if there's an airlock in the system. The boiler may register low pressure because of this air, resulting in the F22 error code.
🔧 How to Troubleshoot:
Let's find out how to fix the F22 error code.
[CHECK THE BOILER’S PRESSURE GAUGE]
First, check your boiler's pressure gauge. The F22 fault usually occurs when the water pressure drops too low, often due to water loss in the system. The ideal pressure should be between 1 and 1.5 bars. If it’s below that, it’s likely the cause of the fault.
[INSPECT FOR LEAKS AROUND THE BOILER]
Next, check the area around your boiler for any leaks. A drop in pressure could be caused by a leak in the pipes, joints, or even within the boiler itself. Keep an eye out for any small drips, as even minor leaks can lead to bigger problems if left unchecked.
[RESET THE BOILER]
After checking the pressure and confirming there are no leaks, try resetting the boiler. Most models have a reset button specifically for situations like this. Press it and see if your boiler starts working normally again. If the F22 fault clears, it is likely a temporary issue. But if the code persists, you may need further assistance.
[CALL A GAS SAFE ENGINEER]
However, it's essential to contact a certified Gas Safe Engineer to safely and accurately diagnose and repair the issue. Attempting to fix it yourself can be dangerous and may cause further damage.
🏢 About Us:
At Serviceteam, our team of skilled Gas Safe engineers handles every make and model of gas and electric boilers. As a professional boiler installer, we meet the manufacturer's high standards and provide exceptional service and peace of mind.
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We hope this video has been helpful. Click on the link below to book a Serviceteam heating engineer. Thanks for watching, and stay warm!
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