Boiler emits a burning smell or plastic smell during operation.

Safety: If you smell burning plastic or see smoke, turn off the boiler immediately at the mains.

• Initial check: For a new or recently serviced Beretta boiler, a slight smell may be normal for a short period as oils burn off.
• Inspect around boiler: Ensure no plastic items or insulation are touching the flue or hot surfaces.
• Technician – internal inspection: Check for discoloured wiring, burnt connectors, or overheated components such as the pump or fan.
• Repair or replace: Replace any damaged wiring or components and ensure all connections are tight.