Leaks may be found with a soapy water solution. Do not use a solution containing ammonia or chlorine when locating leaks.  These products are corrosive to copper gas lines and brass fittings, which could result in deterioration of the copper and brass components. Apply the soapy solution to the outside of the gas piping fittings. If a leak is present, the soapy solution will "bubble" at the leak point. If a leak is indicated, shut off the propane system valve(s) and contact your dealer or a qualified propane service representative immediately.