If your gas combi boiler is losing pressure, it may be due to a leak in the system, or it may be a sign of a more serious problem. Here are some steps you can take to fix the problem:
- Check for Leaks
The first step is to check for any leaks in the system. Check the pipes, valves, and radiators for any signs of leakage. If you find any leaks, you should contact a qualified engineer to fix them as soon as possible.
- Check the Pressure Relief Valve
The pressure relief valve is a safety feature that is designed to release pressure from the boiler when it becomes too high. If the valve is faulty or stuck, it may cause the pressure to drop. You can check the pressure relief valve by locating it on the boiler and checking that it is not leaking or stuck. If you’re not sure how to do this, consult the manufacturer’s instructions or contact a qualified engineer.
- Check the Filling Loop
The filling loop is a flexible hose that connects the boiler to the water supply. If the filling loop is not fully closed, it can cause the pressure to drop. Check that the filling loop is fully closed and if it’s not, close it and monitor the pressure gauge to see if the pressure increases.
- Re-pressurize the Boiler
If the pressure is still low after checking for leaks, the pressure relief valve, and the filling loop, you may need to re-pressurize the boiler. To do this, locate the filling loop and open the valves, allowing water to flow into the system. Watch the pressure gauge and stop when it reaches the recommended pressure level (usually between 1 and 1.5 bar). Once the pressure has been restored, close the valves on the filling loop.
- Call a Qualified Engineer
If you’ve tried all of the above steps and the pressure continues to drop, or if you’re not confident with any of the steps, it’s time to call a qualified engineer. A professional engineer can diagnose and fix the problem and ensure that your boiler is running efficiently and safely.
In conclusion, a gas combi boiler that loses pressure can be a sign of a serious problem, and it’s essential to address it promptly. By checking for leaks, inspecting the pressure relief valve and filling loop, re-pressurising the boiler, and calling a qualified engineer, you can ensure that your boiler runs smoothly and safely.
