Why does Stelrad w2000 boiler pilot light not stay on?

The pilot light on a Stelrad W2000 boiler may not stay on due to several reasons, including a faulty thermocouple that fails to detect heat, a dirty pilot orifice that disrupts gas flow, or issues with gas supply. Additionally, a malfunctioning gas valve or draft issues can also prevent the pilot from remaining lit. Regular maintenance and inspection can help identify and resolve these issues. If problems persist, it's advisable to consult a qualified technician.