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If this problem is happening during installation or when other gas appliances supplied by the same line are in operation, you may have low gas pressure. This could be caused by either using too small of a diameter supply line or low inlet pressure. Contact you gas supplier.'''Dirt in Heater Components''' [[File:kozyworldgw208_01.png]]<BR>''Illustration: This may be the most common cause of a pilot that burns for a few minutes then goes out. Even partial blockage of the Pilot Air Inlet Hole will result in an unreliable pilot. When the pilot goes out and the main burner is still going, the thermal coupler safety will cut the gas supply to the main burner. Keep the entire pilot assembly clean for reliable performance.'' '''Gas Pressure''' If this problem is happening during installation or when other gas appliances supplied by the same line are in operation, you may have low gas pressure. This could be caused by either using too small of a diameter supply line or low inlet pressure. Contact your gas supplier. [[Residential Natural Gas Service Supply]] issues during peek usage or unexpected spikes can cause gas pressure irregularities that may result in failure of the ventless unit staying lit. The pilot may go out while the burner is still going, even though that flame is active the unit safety will still result in a shutoff. '''Altitude'''If you have hooked the heater up to the wrong gas type, you may have this problem. Check your gas supply.'''Ventilation''' '''Cleaning is Important'''MAIN BURNER'''MAIN BURNER'''AIR PASSAGEWAYS'''AIR PASSAGEWAYS'''[[Category:Tangible Product]][[Category:Propane]]