How often do the pilots ignite in a direct ignition system?

In a direct ignition system, pilots do not ignite because the system is designed to ignite the main burner directly without the need for a standing pilot flame. This technology relies on electronic controls that produce a spark to ignite the gas when the system is calling for heat.

Continuous pilot flames, which are common in traditional pilot systems, are not a feature of direct ignition systems, leading to a safer and more energy-efficient operation. Therefore, the correct understanding is that pilots in a direct ignition system "never" ignite under normal operating conditions; they completely eliminate the pilot light requirement to enhance operational efficiency and safety.

The other answers revolve around situations not applicable to direct ignition systems, such as maintenance or troubleshooting, which suggests incorrect practices or assumptions about how these systems function.