Electronic ignition systems there are two basic types of electronic igniters in modern furnaces.
Furnace pilot light electronic ignition.
An electronic ignition lights uses electricity to heat itself up instead of using a gas powered flame.
When the furnace turns on a valve opens up and allows the gas to flow to the pilot light.
A faulty or dirty ignition or sensor is a relatively easy fix so follow these steps and you may be able to solve the problem yourself.
Hot surface igniters and intermittent pilots.
There are two different kind of electronic ignition systems.
This is typically the problem if you can hear your furnace click on but it does not fire up.
As a result an electronic ignition cannot blow out and it is also more efficient because it doesn t require a gas supply at all times like a traditional pilot light does.
One type of electronic ignition is an intermittent pilot.
Electronic ignition gas ignition systems are more efficient than standing pilot gas ignition systems.
There are two basic types of electronic ignition systems.
The electronic ignition system in a gas furnace is a modern development that provides more reliable performance than a standing pilot and offers energy savings through better furnace efficiency.
The electronic ignition gas ignition systems utilize energy only when needed.
The electronic ignition is only turned on when the furnace is ready to begin a heating cycle and it eliminates the need for a constant fuel supply that a conventional pilot light requires.
The first is called an electric spark igniter which activates the pilot light only at times when it s needed.
Like a conventional pilot light an intermittent pilot light still uses a small gas powered flame to ignite the furnace s burners.
Intermittent pilots still use a pilot light however it isn t a standing pilot light that remains on all the time to ignite the burner whenever the gas turns on.
An electric spark then lights the pilot light so it can in turn light the burners.
This system uses a pilot flame but the pilot lights only when there s a call for heat from the thermostat.
The pilot light or ignition sensor is usually the most common issue when your furnace will not ignite.