Have you cleaned the contacts where it screws in. Is the pilot impinging on the correct part of the thermocouple. Is the soleniod faulty. This is a safety device for 100% shutoff so if you are not sure what to do call in a technition.: HELP PLEASE! GAS HEATER PILOT LIGHT WONT STAY LIT! ALREADY REPLACED THERMAL COUPLER! HELP ANY ONE?
