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how to fix a21 fault on worcester boiler

Is your Worcester boiler showing an A21 fault code? Don't worry, we've got you covered with easy steps to fix it!

Trouble with your Worcester boiler? Let’s tackle that A21 fault!

Are you experiencing an A21 fault on your Worcester boiler? No need to panic! This common issue can be easily resolved with a few simple troubleshooting steps. By following the guide below, you’ll have your boiler up and running in no time, keeping your home warm and cozy during the colder months.

Easy steps to troubleshoot and resolve the A21 fault on your boiler

Step 1: Check the water pressure

Low water pressure is a common cause of the A21 fault on Worcester boilers. Start by checking the pressure gauge on your boiler – it should be between 1 and 1.5 bar. If it’s below this range, you’ll need to repressurize the system. Simply locate the filling loop on your boiler, open the valves to allow water in, and watch the pressure gauge until it reaches the correct level.

Step 2: Reset the boiler

If the water pressure is within the correct range and you’re still seeing the A21 fault, try resetting the boiler. Locate the reset button on your Worcester boiler and hold it down for a few seconds. This will reboot the system and often resolve any minor issues causing the fault.

Step 3: Check for blockages

Another common cause of the A21 fault is a blockage in the system. Check the pipes and filters for any obstructions that may be restricting the flow of water. Clear any debris or buildup that you find, and then reset the boiler to see if the fault has been cleared.

By following these easy steps, you can troubleshoot and resolve the A21 fault on your Worcester boiler without the need for a professional. Remember to always refer to your boiler’s manual for specific instructions and safety precautions. Keeping your boiler well-maintained will ensure it runs efficiently and keeps your home warm for years to come.

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