In most heaters, there is a small part, called a "thermocouple" that senses that the pilot is on. It can take a few seconds after lighting the pilot for it to do that, and if it doesn't, then it will turn the gas off so you don't get gas coming into your environment.
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In most heaters, there is a small part, called a "thermocouple" that senses that the pilot is on. It can take a few seconds after lighting the pilot for it to do that, and if it doesn't, then it will turn the gas off so you don't get gas coming into your environment.
Thermocouples are replaceable.