Self Igniting Water Heater Won T Light

This video provides step by step instructions for replacing the igniter and flame sensor on ao smith gas water heaters.

Self igniting water heater won t light.

Usually the first warning. When the pilot light goes out for any reason the thermocouple closes the burner s gas supply valve to prevent gas escaping. If the pilot cannot be cleaned replace it. If the pilot is restricted try removing it and clearing it with a stiff brush and or compressed air.

Replacement is an easy diy repair. Unlike older pilot lights which have to be lighted by hand automatic pilot lights now commonly found in most home furnaces are regulated by a thermostat and only ignite when needed. Tank type gas water heaters use a pilot light to ignite the gas burner when the water in the tank needs to be heated. The pilot ignites the water heater s gas burner.

If the pilot does not light the water heater will not heat. A thermocouple senses the heat of the pilot and allows gas to flow to the burner. To prevent problems with the water heater pilot light it is crucial to read the manufacturer s instructions carefully especially how to maintain the gas water heaters and how to light the pilot. Understanding some of the basic components of a modern furnace will help you identify the type of furnace you have and narrow down the list of potential problems.

The most common reason for replacing. If your hot water heater suddenly stops working chances are a bad thermocouple has shut off the gas to the pilot light. How to light the pilot for a gas hot water heater. The first sign of trouble with your water heater s pilot light is usually a cold shower.

A bad thermocouple will shut off gas to both the pilot and the. When your furnace fails to ignite the first place to look is the pilot light. Otherwise if the pilot light is not functioning correctly the unit won t turn on and you won t have hot water. Sometimes carbon deposits can build up on the pilot and eventually create a restriction.

The most common reason for this problem is because the pilot light is not on. How to light a pilot light after gas is shut off. A hot surface ignition system uses an electronically controlled resistance heating element not unlike a light bulb filament to ignite the gas burner.