If a water heater pilot light does not stay lit, it is usually due to a faulty thermocouple. The thermocouple produces a heat-activated electrical current when it detects the pilot light, which keeps the gas valve open. When the thermocouple is defective or not functioning properly, it acts as though the water heater is off and cannot be lit.Know More
When the pilot light is not turned or the thermocouple cannot detect it, the thermocouple shuts off the gas to the heater as a safety measure. One reason why the pilot light can be turned on and not remain lit is because the thermocouple is dirty or covered in soot. Gently sanding the thermocouple after turning off the gas and letting it cool can solve this problem.
Another reason why the thermocouple might act as though the light was off is because it is bent and the pilot flame isn't touching it. Bending it closer to the water heater pilot light will ensure that the thermocouple detects it and keeps the gas on.
A pilot light might also remain off if the pilot tube is dirty. Cleaning the pilot tube with a needle after it has cooled can resolve this issue. This can also happen if the thermocouple is damaged beyond repair and needs replacement.Learn more about Home Maintenance
Possible reasons why a pilot light may not stay lit include a problem with the thermocouple, a dirty pilot tub or a strong draft. A problem with a pilot light may cause a gas leak should be fixed immediately.Full Answer >
Light a water heater by waiting for gas to dissipate, turning the control knob to pilot, igniting the flame, holding the control knob pressed in for one minute and turning the knob to the on position. Never attempt to light a gas appliance if you smell gas in the area.Full Answer >
To turn a water heater on, turn the gas supply off, and then set the gas knob to the pilot position. Press the reset button, and light the pilot. Turn the gas back on, and set the temperature to your liking.Full Answer >
To troubleshoot a Napoleon gas fireplace that will not stay lit, check the drip loop, the pilot light, the thermocouple and the gas valve to ensure all components are clean and working before replacing. If the gas fireplace pilot light will not stay lit, troubleshooting common problems can usually fix this issue.Full Answer >