If the pilot will not light at all, then first check to make sure your propane cylinder is not empty. Second disconnect the tank and reconnect, but very slowly turn the tank valve back on and try relighting it again. Third, if the above two do not solve it, then get a can of compressed air (like you use to clean computer keyboards) and blow out the dirt/spiderweb from the pilot orifice, where the pilot flame normally lights. It may just be plugged/dirty. Douglas