Hello there, I'm a professional in the field of home appliances, with a particular focus on water heating systems. I've helped many homeowners troubleshoot and resolve issues with their hot water heaters. Let's dive into the possible reasons why your hot water heater keeps going out.

Faulty Thermocouple
A faulty thermocouple is one of the most common reasons for a water heater's pilot light going out. The thermocouple is a safety device that senses heat from the pilot light and signals the gas control valve to maintain the flow of gas. If the thermocouple is not detecting heat properly, it can cause the gas supply to be shut off, resulting in the pilot light going out.

Dirty Thermocouple
If you can light the pilot light but it keeps going out, a dirty thermocouple might be the issue. Over time, dust, dirt, and debris can accumulate on the thermocouple, preventing it from sensing the heat correctly. Cleaning the thermocouple can often resolve this problem.

Faulty Gas Control Valve
Another possible cause is a faulty gas control valve. The valve is responsible for regulating the flow of gas to the water heater. If it's not functioning properly, it can lead to the pilot light going out.

Pilot Assembly Issues
Problems with the pilot assembly itself can also cause the pilot light to extinguish. This could be due to a faulty ignition system, a clogged orifice, or a damaged pilot burner.

Improper Ventilation
If your water heater is not getting enough oxygen or is not able to expel carbon monoxide properly, it can cause the pilot light to go out. This is often due to improper ventilation.

Water Pressure Issues
Low water pressure can also affect the operation of the water heater. If the water pressure is too low, it can prevent the water heater from igniting properly.

Temperature and Drafts
Temperature fluctuations and drafts in the area where the water heater is located can also affect the pilot light. If the area is too cold or there are strong drafts, it can cause the pilot light to go out.

Electrical Issues
For electric water heaters, electrical issues such as a faulty heating element or a malfunctioning thermostat can cause the water heater to stop working.

Regular Maintenance
Lastly, regular maintenance is crucial to prevent issues with your water heater. This includes cleaning the burner, checking the anode rod, and inspecting the gas lines and connections.

It's important to address these issues promptly to ensure the safety and efficiency of your water heating system. If you're not comfortable troubleshooting or repairing the water heater yourself, it's best to consult with a professional.

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A faulty thermocouple can cause problems with your water heater not staying lit. Dirty thermocouple: If you can light your pilot light, but the water heater pilot keeps going out, there are many possible causes. ... This will cause the thermocouple to turn off the supply of gas, and then your water heater won't light.read more >>