Error A51 Boiler Cointra

What is the failure of error A51 Cointra that is affecting your boiler?

Cointra brand boilers have recently become very popular in the market, being very economical and reliable appliances, but nevertheless they are not exempt from presenting some failures in their operation. Do you have a Cointra boiler and the error code A51 has appeared on the screen? You're in the right place!

Let's solve this problem, stay with us because today we are going to explain what this error means, what its possible causes are, and how you can fix it quickly and easily.

The A51 error code indicates that there is a problem with the combustion gas outlet in your boiler. This means that the gases produced when heating the water cannot escape freely to the outside and accumulate inside the appliance.

We're going to leave you with a list of possible causes why the evacuation gases in your boiler may be obstructed, causing the A51 error code to appear on the screen:

• An incorrect installation of the boiler or the flue: If the boiler is not installed correctly and following the manufacturer's instructions according to the user manual, then the A51 error code may appear on your Cointra boiler.
• An accumulation of dirt, dust, and/or debris in the flue: Dirt is the enemy of a good airflow for your boiler's gases. You may need to perform maintenance on this entire pipe, especially because sometimes birds nest in the pipe outlet, as well as other animals like rodents.
• The presence of air or wind outside that hinders the gas outlet: Too much air or wind outside can be a problem for proper gas outlet in your boiler. This can occur if the boiler is installed in an area exposed to the outdoors or if there is an obstacle near the flue outlet, such as a tree or building.

These are all the apparent reasons and motives why the A51 error code is displayed on Cointra boilers. Now, let's see what possible solutions we have for you.

How to fix the error A51 of the Cointra boiler?

There are several solutions you can try to fix the problem of the A51 error code. Take note of each of them and don't overlook any, as details matter:

1. Turn off and disconnect the boiler from the power supply to reset and refresh its sensors: Sometimes the error may be temporary and can be resolved simply by turning off and disconnecting the boiler from the power supply for a few minutes. This resets the sensors and may clear the A51 error code. After the time has passed, reconnect and turn on the boiler to check if it is functioning correctly and if the fault has disappeared.
2. Check the installation of the boiler and the flue: Make sure the boiler is installed correctly and complies with the manufacturer's instructions in its installation manual. Also, check that the flue has the appropriate diameter, length, and inclination, and that there are no leaks or breaks in the entire pipe route.
3. Clean the flue outlet of your Cointra boiler: Use a brush and/or a vacuum cleaner to clean the inside of the flue outlet pipe. Remove any dust or residue that may be obstructing the passage of gases. If you notice spider webs or nest twigs, remove them carefully because sometimes birds can nest in this pipe.
4. Check the external weather conditions that may negatively affect your boiler: Observe if there is a lot of air or wind outside that may be hindering the gas outlet. Try to protect the boiler or flue outlet with a grille or cover. Also, make sure there are no obstacles near the flue outlet, such as a tree or building, that may create negative air backpressure.
5. If the problem persists, please repeat all the previous steps and make sure to follow everything to the letter: Sometimes, it may be necessary to repeat the previous solutions several times to completely eliminate the error. Therefore, we recommend that you be patient and persistent, and follow all the instructions but this time with more careful attention to detail. If the problem still persists, then it may be time to leave the problem in the hands of Cointra boiler experts.
6. Call a Cointra technical service and request a home visit for a more thorough inspection: If after trying all the previous solutions the A51 error code continues to appear on your boiler, there may be a more serious or complex problem that requires the intervention of a qualified professional. In that case, do not hesitate to contact Cointra's technical service and request a home visit for their authorized personnel to inspect your boiler and repair it if necessary.

In summary and to conclude, the A51 error code indicates that there is a problem with the evacuation of combustion gases from the boiler. The possible causes are incorrect installation, accumulation of dirt, or presence of air or wind outside. The possible solutions you can apply to fix this problem are as follows:

• Turn off and disconnect the boiler from the power supply to reset and refresh its sensors
• Check the installation of the boiler and the flue
• Clean the flue outlet of your Cointra boiler
• Check the external weather conditions that may negatively affect your boiler
• If the problem persists, please repeat all the previous steps and make sure to follow everything to the letter
• Call a Cointra technical service and request a home visit for a more thorough inspection

We hope this article has been helpful to you and that you have been able to fix the problem of the A51 error code on your Cointra boiler. You don't have to worry because this is not a serious problem and can be very easy to fix, just make sure to follow all the steps to the letter and rely on the manufacturer's manual for the correct installation of your boiler. Good luck and until next time!