Does thermocouple controlled gas valve?
The thermocouple detects the heat from the pilot light, and should the pilot light go out accidentally, the thermocouple will automatically shut off the gas valve. The thermocouple in a gas furnace is designed to keep the gas valve open through its electric voltage.
How do you test a thermocouple on a gas valve?
How to Test a Thermocouple on a Gas Valve
- Light the pilot by pressing and holding the pilot light button on the gas control valve.
- Continue pressing the pilot button for 30 to 60 seconds after lighting the pilot light.
- Release the button.
How to troubleshoot gas valve with thermocouple?
Troubleshooting: Most problems with this type of valve are due to thermocouple problems. Check the following: 1. Connection from the thermocouple to the valve. Clean the threads of the connecting nut with a pencil eraser and re-tighten. 2. Pilot hood and flame direction.
Can a thermocouple be replaced on a water heater?
The thermocouple is a more likely culprit, and can be replaced without much expense. If the thermostat or heat limiter have gone bad, you may be able to replace only the faulty component, but it is generally easier and only slightly more expensive to replace the entire gas control valve.
When do you need to replace a gas control valve?
The thermocouple is a more likely culprit, and can be replaced without much expense. If the thermostat or heat limiter have gone bad, you may be able to replace only the faulty component, but it is generally easier and only slightly more expensive to replace the entire gas control valve. Once a heat limiter has been tripped, it must be replaced.
How does a thermocouple pilot work on a gas burner?
Startup is similar to the thermocouple-only valve. Once the pilot is lit, the knob is held in for 30 seconds to “prove” the heat and then released and turned from the “pilot” to the “on” position. The main burner will then respond to the switch, thermostat or remote control. Troubleshooting:
