If gas is coming out of the pilot, but it still won't light, the spark igniter could be the problem. Alleyne says to look for and clear out any debris between the igniter and thermocouple.

The Series 9X microprocessor-based intelligent direct spark and intermittent pilot ignition control modules are designed for OEM and replacement for natural, manufactured gas, or LP applications. The ...

While the original Ignitor can usually run safely off of the factory resistance wire, Ignitor II and III must use a 12-volt ignition source, as does the Digital HP ignition.