Error A51 Heater Cointra

What is the failure of A51 error in Carrier that is affecting your heater?

Do you have a Cointra brand heater, and the A51 error code has appeared on the screen? Well, it's time to solve this problem. Stay with us and keep reading because today we will explain what this error means, what its possible causes are, and how you can quickly and easily fix it.

The A51 error code indicates that there is a problem with the evacuation of combustion gases in your heater. This means that the gases generated when heating water cannot exit correctly to the exterior and accumulate inside the device, which can cause malfunction or even a risk to your health and that of your family.

But why does this problem occur, and why do I see the A51 error code on my Cointra heater? There are several reasons that can cause an obstruction in the exhaust gases, such as:

• An incorrect installation of the heater or the flue: It is important that the heater is installed following the manufacturer's standards and guidelines, and that the flue has the appropriate diameter, length, and slope to prevent gases from getting trapped.
• An accumulation of dirt, dust, and/or debris in the flue: Over time, it's normal for a layer of dirt to form inside the tube, which can reduce the passage of gases. Therefore, it is advisable to periodically clean the flue with a brush or a vacuum cleaner. It often happens that birds nest in the flue or that cobwebs accumulate, as well as other animals like rodents can nest in the pipe seeking warmth.
• The presence of air or wind outside that hinders the gas outlet: If there is a lot of air or wind outside, there may be backpressure preventing the gases from exiting correctly. This can happen especially if the heater is installed in an exposed outdoor area or if there is an obstacle near the flue, such as a tree or a building.

All these are the apparent reasons for which the A51 error code appears on the display screen of your Cointra heater. Now, let's see what possible solutions we have for you.

How to fix A51 error in Cointra heater?

How can I solve this error? There are several solutions you can try to resolve the A51 error code problem. Some of them won't even require the assistance of an authorized service technician; you can try to do it yourself:

1. Turn off and disconnect the heater from the power to reset and refresh its sensors: Sometimes, the error may be temporary and can be fixed by simply turning off and disconnecting the heater from the power for a few minutes. This resets the sensors, and the A51 error code may be cleared. You have nothing to lose by trying, so let's give it a shot! Then, reconnect and turn on the heater and check if it works correctly and if the A51 error has disappeared.
2. Check the installation of the heater and the flue: Ensure that the heater is correctly installed and complies with the manufacturer's standards and specifications. Also, check that the flue has the appropriate diameter, length, and slope, and that there are no leaks or breaks along the entire pipe route.
3. Clean the flue of your Cointra heater: Using a brush or a vacuum cleaner, clean the inside of the flue tube to remove any dirt, dust, or residue that may be obstructing the passage of gases. Do this carefully without damaging the tube. If you notice cobwebs or twigs, remove them gently because birds can sometimes nest in this pipe.
4. Check external weather conditions: Observe if there is a lot of air or wind outside that may be hindering the exit of gases. If so, try to protect the heater or the flue with an element that reduces exposure to the outdoors, such as a grille or a cover. Also, make sure there are no obstacles near the flue, such as a tree or a building, that could create 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 instructions but this time with more careful attention to detail. If the problem still persists, then it may be time to leave the issue in the hands of Cointra heater experts.
6. Call a Cointra service technician and request a home visit for a more thorough inspection: If after trying all the above solutions the A51 error code continues to appear, 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 and repair your heater 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 heater. The possible causes are incorrect installation, an accumulation of dirt, or the presence of air or wind outside. The possible solutions you can apply to fix this problem are as follows:

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

That's all, friend! We hope this article has been helpful, and you have been able to resolve the A51 error code problem in your Cointra heater. As you can see, it's not a serious problem and can be very easy to solve; just make sure to follow all the steps to the letter and refer to the manufacturer's manual for support. Good luck and until next time!