CLAS ONE
- CLAS ONE 24
- CLAS ONE 30
- CLAS ONE 35

Repairs · servicing · replacement
Van Molder works on Ariston equipment for servicing, fault diagnosis and replacement projects, depending on the model.
Selected references from manufacturer documentation, including older generations. Check the full name and suffix on the rating plate: manuals and error codes can differ by version and country.
Describe the fault, the message shown and what changed. The diagnosis looks for the origin of the problem.
Tell us the model and the date of the last service, and keep the previous certificate to hand if you have one.
To upgrade your installation, we talk about the current equipment, your home and your hot-water needs.
These details help us understand the request and check what we can take on. Never dismantle the appliance to look for a reference.
Check the model, note the full code and learn the useful precautions before the diagnosis.
Ariston codes depend heavily on the range (Genus, Clas, Alteas…). This selection is indicative: check the exact model’s manual.
5 error codes found
Find the model, record the full code and prepare a boiler repair in Halle, Lembeek, Waterloo or Braine-l’Alleud.
We come to your address. Tell us where you are to confirm availability.
Your model, your town and your need: three details to get started.