Hello to all users: Well, I tell you that I am new to the forum and there was a problem with the washing machine. I have a Drean Exellent Blue 8.12 washing machine (I don't have any more references) which, after choosing the washing program, began to fill water and did not stop, exceeding the loading time of 5min. which derived in error2. I took it apart to see what the problem would be and if I could fix it ... with a pager I touched the terminals of one of the solenoid valves and made a short circuit which in my opinion damaged one of the plate's triacs. With a tester I checked the tension of the same and only reaches 78-80 volt. I enclose a photo of the triac that is fine ... it has 2 tricas, one for each solenoid valve and I calculate that both are equal since the solenoid valves are identical, they handle the same tension. I am not an expert in the subject, I am not a technician, I am not even a student of a career related to the subject, I need to change the triac and I need to know the nomenclature that manufacturers use when marking them. I have searched triac Z9M and found it but the number S137 does not match and I need to know if that number matters or not? I have been told that it does not matter since it is a product lot code but I need to be sure. Thanks to all who can help and comment.

Hello, you just have to look for Z9M, the rest you can ignore. In this link, there is more information, https://yoreparo.com/electrodomesticos/lavadoras/preguntas/1506228/reemplazo-de-triacs-f011-z9m Luck