Error 15 in the Ariston dishwasher

Problematic error 15 in an Ariston dishwasher is not so rare. Most often it appears in dishwashers of the LTF and LFD series, and it is not very easy to find the true explanation of this error. In this publication, we will not only decipher error 15, we will also offer options for troubleshooting and fixing the problems that cause it.

Probable Causes

On some forums, visitors suggest that error 15 is due to the fact that the machine cannot remove waste water, or removes it, but does not stop pumping. In other words, they believe that this error indicates the pump or fill valve. It's not like that at all. It is possible that the error alternates with some other one, so it seems that the drain/fill system is faulty, but in most cases error 15 indicates a breakdown of the heating element.

This error appears in cases where the control module cannot detect the heating element. Why can't the module detect it?

1. The heating element has burned out.
2. The wiring supplying the heating element or contacts is faulty, so the part is simply de-energized.
3. The control module itself or its firmware is faulty, so it does not see a working heating element.

These are serious reasons. If error 15 occurs, the machine may continue to work, but it does not wash the dishes satisfactorily. Don't leave everything as is, let's start checking and repairing.

Checking the heating element

Hotpoint Ariston dishwashers have flow-through heating elements. This is a large part adjacent to the circulation block.Water passing through it is heated to the required temperature and thanks to this the machine can wash dishes with hot water, increasing the washing efficiency. In order to get to the heating element, you need to remove the cover of the dishwasher tray, after which the heating element will be at hand.

1. We unhook and check the wires of the heating element with a multimeter.
2. We check the resistance of the heating element.
3. We check the heating element body for damage and debris.

Quite often, the heating element becomes so clogged that water stops circulating normally through it. This also affects heating.

If you find problems with the heating element, do not try to repair it, this is useless. The part must be replaced. Its average cost is about $70. In order to remove the old heater and install a new one, you need to loosen the clamps. The wiring to the new heating element must be connected in the correct sequence, so take a photo of how the old heating element is connected. If you have problems checking and replacing the heating element, read the article Replacing the heating element in a dishwasher, and we move on.

Problems with the control module

Everything will be completely sad if it turns out that the heating element is absolutely working and the problem is not at all in it. What then happened to the machine? There is only one thing left: most likely, the control module is faulty, or its firmware has simply crashed. What to do in such an unpleasant situation, how to fix such a breakdown? We won't give you hope. Without the appropriate experience, you will not be able to professionally repair the control board yourself; you must call a specialist.

Handicraft repair of the control board usually ends with the part being completely unserviceable, and this part is very expensive.We advise you not to take risks and leave your Ariston car in the hands of professionals.

So, we found out why error 15 appears in Ariston dishwashers and why experts call it one of the most unpleasant. Let's hope that everything will work out for you by cleaning the heating element. Happy renovation!

3 reader comments

1. 02/28/2022 at 10:51

   Irina:

   Thank you for the detailed article!

   Answer
2. 06/18/2022 at 12:43

   Angela:

   Thank you

   Answer
3. 11/17/2022 at 06:37

   Gregory:

   It turns out that if my heating element heats up, the water is drained and collected, then the machine’s head can’t think straight?

   Answer