When is lockout supposed to occur in an ignition system?

Lockout in an ignition system occurs when the allotted try for ignition has lapsed. This is a safety feature designed to prevent repeated attempts to ignite the burner after a failure. Continuous attempts to ignite can lead to dangerous conditions, such as gas buildup, which can create a risk of explosion or fire.

When the ignition system detects that it hasn’t successfully ignited within a set time frame or number of attempts, it will enter a lockout mode. This means that the system will stop trying to ignite and will typically require a manual reset. This process protects both the equipment and personnel by allowing time for any residual gas to dissipate before another attempt at ignition is made.

The other scenarios, such as ignition post-ignition, manual adjustments, or maintenance activities, do not apply to the lockout condition, as lockout is specific to failure sequences during the ignition process.