What action should be taken if the pilot lights but the main burner does not come on in a system with an electric safety valve?

When the pilot light is functioning but the main burner does not ignite in a system with an electric safety valve, replacing the safety valve is a prudent action. The safety valve is designed to regulate the flow of gas to the burner based on signals from the thermocouple, which responds to the heat from the pilot flame. If the main burner fails to ignite even when the pilot is operational, it may indicate that the safety valve is malfunctioning and not allowing gas to flow to the burner.

Replacing the safety valve ensures that it can properly detect the pilot flame and enable the main burner to operate, thus restoring the appliance’s functionality. While other options might appear relevant, such as adjusting the thermocouple or checking gas pressure, these would typically not address a scenario where the pilot is lit, but the main burner is not receiving gas due to a failure in the electric safety valve.