What does the Worcester Bosch A201 fault code mean?
The A201 fault code indicates that the water pressure in the boiler is too low, which can prevent the system from functioning properly. This issue can lead to inadequate heating and hot water supply, and it is essential to address it promptly to avoid further complications.
Common Causes
- Low Water Pressure: This can occur due to leaks in the system or insufficient water supply.
- Faulty Pressure Relief Valve: A malfunctioning valve may allow water to escape, leading to a drop in pressure.
Can I fix it myself? (DIY)
If the issue is simply low water pressure, you can attempt to fix it yourself. First, locate the filling loop on your boiler and ensure it is connected. Next, open the valves on the filling loop to allow water to enter the system until the pressure gauge reads between 1 and 1.5 bar. Once the pressure is restored, close the valves and check for any leaks. If the problem persists or if you are unsure, it is advisable to contact a Gas Safe Engineer.
Estimated Repair Cost (2026 UK Prices)
If the issue is due to a faulty pressure relief valve, the cost for replacement parts typically ranges from £80 to £150, with labor costs around £80 to £120. Therefore, the total estimated repair cost would be approximately £160 to £270, depending on the specific circumstances and parts required.