Furnace emits a burning smell or plastic smell when running

Safety: If you see smoke or suspect an electrical burning smell, turn off power immediately and do not use the furnace.

• Initial use: A slight burning smell may be normal for a short time after first installation or after long disuse as dust burns off.
• Check surroundings: Ensure no plastic items, insulation, or stored materials are touching the furnace casing or flue.
• Inspect wiring (qualified persons): Look for discoloured or melted insulation near the burner, fan, or PCB.
• Call a technician: Persistent or strong burning smells require professional inspection.