Here is a picture of mine, yours may not be the same but probably similar. Mine is located near the floor just under the stove. It has to be turned on, it could take 30 seconds or so before the green light flashes on/off. Also make sure that your propane tank valve is open as well. Once the green light flashes then you should be able to light your propane appliances. It also may take awhile to the propane to be bled out of the lines. Generally you should try to light your stove burners first.