Ariston boiler Error 501

What is the failure of the 501 Ariston error that is affecting your boiler?

Has it happened to you that you turn on your Ariston boiler and the error code 501 appears? Do you know what it means and how to solve it? If you have no idea, don't worry, because in this article we are going to explain everything you need to know about this annoying problem that affects your appliance.

The error code 501 indicates that there is a failure in the boiler's flame, which prevents the water from heating. This can be due to several causes, from a problem in the gas supply to an obstruction in the burner. To help you solve this Ariston boiler problem and have hot water in your home again, I'm going to give you a list of the possible causes and solutions of error code 501. Pay attention and follow the steps I indicate below.

The possible causes of error code 501 are:

• Lack of gas: The gas supply may be cut off or the gas valve may be closed. This prevents the boiler from receiving the necessary fuel to generate the flame.
• Low pressure: If the water circuit pressure is below the minimum level, the boiler cannot operate properly and the flame goes out.
• Dirty burner: Over time, the burner can accumulate dirt or residue that hinder the gas outlet and the formation of the flame.
• Defective electrode: The electrode is responsible for producing the spark that ignites the flame. If it is damaged or worn, it will not be able to perform its function and the boiler will display the error code 501.
• Defective ionization probe: The ionization probe is the sensor that detects the presence of the flame. If it is damaged or improperly connected, it will not be able to send the signal to the electronic board, and the board will interpret that there is no flame.

How to fix the 501 error of the Ariston boiler?

The possible solutions to the 501 error code for Ariston brand boilers may be the following:

1. Restart the boiler: The first thing you should do is turn off and turn on the boiler to see if the problem is solved. Sometimes, a simple restart can be enough to restore normal boiler operation.
2. Check the gas: Check that the gas supply is active and that the gas valve is open. If there is any outage or leak, contact your gas company to solve it.
3. Adjust the pressure: Look at the boiler's pressure gauge and make sure the pressure is between 1 and 1.5 bar. If it's below, open the filling keys until it rises to the appropriate level. If it's above, open a hot water tap until it drops to the correct level.
4. Clean the burner: If you suspect the burner is dirty, you'll need to dismantle and clean it with a brush or cloth. Remove any dirt or residue that could block the gas outlets.
5. Change the electrode: If the electrode is defective, you will have to replace it with a new one. For this, you will have to disconnect the boiler from the electric power, remove the front cover and access the burner. There you will see the electrode, which is usually held with a screw or a nut. Disconnect it from the cable and replace it with a new one. Reconnect it to the cable and put everything back in place.
6. Check the ionization probe: If the ionization probe is faulty or poorly connected, you will have to check it and repair or replace it. For this, you will have to follow the same steps as to change the electrode, as the probe is usually next to it. Make sure the wires are well connected and that there is no visible damage to the probe. If necessary, replace it with a new one.
7. Repeat all the previous steps if the problem persists: If after doing all the above, the 501 error code still appears, you will have to repeat all the steps from the beginning. It may be that you have missed some detail or that there is more than one cause causing the fault.
8. Go to Ariston technical support to solve the problem: If none of the above works, it is best to contact the Ariston technical service so that a professional can review your boiler and repair it. There may be some damaged component or a more serious breakdown that requires specialized intervention.

In summary, to solve the 501 error code of your Ariston boiler, you should:

• Restart the boiler
• Check the gas
• Adjust the pressure
• Clean the burner
• Change the electrode
• Review the ionization probe
• Repeat all the previous steps if the problem persists
• Go to Ariston technical support to solve the problem