What should be checked if the pilot light keeps going out?

The pilot light going out can indicate a range of potential issues, and checking all possibilities ensures a comprehensive approach to troubleshooting.

A malfunctioning thermocouple is critical, as this device is responsible for detecting whether the pilot light is lit. If the thermocouple is faulty, it may not properly send signals to keep the gas valve open, resulting in the pilot light extinguishing. This is a common issue and often warrants inspection.

Ventilation blockage should also be investigated, as proper airflow is necessary for the combustion process. If there is inadequate ventilation, the pilot light may go out due to a lack of oxygen, leading to incomplete combustion and potentially unsafe conditions.

Additionally, a gas supply issue can prevent the pilot light from staying lit. If there is an interruption in the gas supply, whether due to a closed valve, low pressure, or other disruptions, it can cause the pilot light to extinguish.

Given that each of these factors could independently cause the pilot light to fail, checking all of them is essential for an effective diagnosis and repair. Therefore, assessing all these elements comprehensively is the correct approach to resolving the issue with the pilot light.