Service support starts with correct product identification and the documents supplied with the specific model. Warranty duration and conditions may differ by product and market.
Prepare the model name, article number or serial data shown on the product label.
Keep the purchase document, warranty card and installation records available where applicable.
Provide a concise description, operating conditions and clear photographs or video if they help diagnosis.
The responsible representative or service centre confirms the next action after reviewing the information.
Do not open gas, electrical or pressurised equipment yourself. Installation, diagnosis and repair must be performed by suitably qualified specialists in accordance with the product documentation and local requirements.