Ariston Heater Error A4

What is the fault of the A4 Ariston error affecting your heater?

This is another error code related to the smoke pressure switch. Just like error A3, it was about the problem that can be due to an obstruction or a fault in the pressure switch of your heater. This A4 error code deals with roughly the same issue.

The A4 error code that can affect Ariston heaters indicates that there is a fault in the smoke pressure switch, or that something related to this pressure switch is not functioning correctly. For the pressure switch to work properly, it relies on several other factors that we are going to review with you today.

And if you were wondering if this A4 error code can also affect the Ariston Next Evo X SFT 11 heater, then you are correct. This fault can affect all models of Ariston heaters.

Let's remember that the smoke pressure switch is a component that measures the gases expelled by the heater. If this error code has been triggered, it's because the system has detected a fault, and for safety reasons, it has locked. It's crucial that you fix this problem as soon as possible, as the safety system has activated this error to prevent a catastrophic situation such as a fire in your home.

Among the possible causes that can generate this fault, we can consider the following:

• A smoke pressure switch that is already defective and does not detect the combustion gas pressure in your heater properly.
• A broken or poorly placed tube that does not allow the gases to pass.
• A combustion chamber that is dirty and lacking maintenance.
• A fan or extractor that is not functioning correctly.
• The combustion gas outlet is obstructed by some external object.

How to fix the A4 error on the Ariston heater?

To resolve the A4 error code in Ariston brand heaters, you can try the following tips we have listed below. Take note of each one and don't skip any:

1. Restart your Ariston heater: Sometimes, performing this simple procedure can make the pressure switch function correctly again. To do this, you'll need to turn off the heater and unplug it from the electrical outlet. Wait for a few minutes and let your heater cool down, then plug it back in and turn it on. Now check if the error has disappeared.
2. Check the condition of the pressure switch: Ensure that this device is working properly. Check if it's damaged, burnt, corroded, etc. If possible, perform preventive maintenance using electronic cleaner.
3. Examine the condition of the tubing: You'll need to thoroughly check the tubing that connects the pressure switch to the combustion chamber. If it's very dirty, you'll have to maintain it to remove any dust and dirt that may be inside. You can clean it with a soft wire or replace it altogether.
4. Clean the combustion chamber: It's obvious that the combustion chamber can get very dirty due to combustion gases, so you'll need to check and clean it if necessary.
5. Inspect for external objects that might block the gases: Sometimes external objects or animals can nest in the combustion chamber. Common culprits are pigeons, mice, and/or opossums. Make sure there are no nests or deceased animals within this chamber and clean it if necessary.
6. Check the operation of the extraction fan: If this fan isn't working correctly, then it won't be able to push the gases through the combustion chamber. Thoroughly check this extraction fan and perform preventive maintenance if necessary.
7. If the problem persists, go over everything again: It wouldn't hurt to review everything once more. Follow all steps to the letter and ensure you haven't overlooked anything. If the problem remains persistent, then it might be time to consult an expert.
8. If the problem continues, contact Ariston technical support: If you've been unable to resolve the A4 error code on your Ariston heater, even after following all the previously mentioned steps, then it's time to leave it to the professionals. A qualified professional will assist in resolving this issue quickly, safely, and efficiently. Call the Ariston technical service and schedule an appointment for your heater's inspection.

In summary, when we talk about the A4 error code in Ariston heaters, we're referring to the smoke pressure switch detecting an inadequate combustion gas pressure. It's an issue you need to address as soon as possible. Here's a brief and concise summary of how you might resolve this issue:

• Restart your Ariston heater
• Check the condition of the pressure switch
• Inspect the state of the tubing
• Clean the combustion chamber
• Check the operation of the extraction fan
• Inspect for external objects that may be obstructing the combustion gases
• If the problem persists, review everything again
• If the problem continues, contact Ariston technical support