First, determine whether your cartridge is clogged. Put your lips to the mouthpiece and inhale gently. If you don’t feel air flowing through the cartridge, your cartridge is clogged.

If your cartridge is clogged: Gently heat the cartridge by using the preheat cycle on your Fernway battery. Press the button twice and wait 15 seconds for the lights to turn off. If you are using a different battery, you can warm the cartridge by holding it in your hand, placing it on a heating pad, or just by holding down the battery’s button. Never place your cartridge in the microwave or on a hot surface.

If your cartridge isn’t clogged, but there’s no vapor coming out: Clean the contact plate on your battery with a Q-tip or small piece of cloth and some rubbing alcohol to get rid of any dirt or dust that might be disrupting the flow of current.

If you’re still having problems: Contact the retailer where you bought the cartridge for further assistance.