http://www.wittus.com/Specs/XG0810_L38DF-ST-032012.pdf
The operating manual for the Montigo L38DF St is at the above location. This is a direct vent gas fireplace with a standing pilot and a SIT gas valve with thermocouple and pilot generator.
There is nothing that should be beeping, indeed nothing that really CAN beep that I can think of.
Can you identify where this noise seems to be coming from?
The pilot should remain lit in between uses of the main burner.
<<my direct vent FP, made by Montigo Del Rey now makes a faint beeping sound when I turn it on, and the igniter is not sparking.
Please be more specific as to exactly when this beeping starts and stops.
For example, do you hear the beeping when the pilot is lit and the main burner is off?
<<my direct vent FP, made by Montigo Del Rey now makes a faint beeping sound when I turn it on, and the igniter is not sparking.
This is too vague a comment to be of much help. What is the "it" that you turn on that produces the beeping? The pilot burner gas, pilot burner flame, main burner gas?? You have to be specific and detailed.