Which laser module? Read this thread: Laser Frustrations and bugs for some observations - the 10W seems to have a bug in the firmeare IMHO for constant power off, and the 2W may need tweaking at the low power end (M2000 L24 Pxx).
If it is the10W, please file a support ticket! I never received a final answer to my request on that, and a bump might be good!