Furnace Pilot Light Sensor

Choose from silicon carbide and silicon nitride hot surface igniters with flat round and spiral tips.

Furnace pilot light sensor.

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. The pilot light or ignition sensor is usually the most common issue when your furnace will not ignite. If your old gas furnace has a standing pilot you can follow a standard procedure to relight the pilot light. Occasionally a standing pilot light will need to be relighted or a thermocouple will need to be replaced but these are easy and infrequent repairs.

Flame sensors are used in furnaces with electronic ignition rather than a standing pilot light and might include an intermittent pilot or a hot surface ignition type. Turn the gas control to pilot and hold it in while you light the flame with a match or a lighter. Tape down the safety switch temporarily if you need to keep the panel open to prime the furnace. Replace gas furnace pilot and ignition components with high quality parts from grainger.

Keep the knob in for 20 seconds and then release it and turn it to the on position. Furnace sensor rod fix no heat pilot light on. Shop here and find a variety of pilot and thermopile assemblies replacement thermocouples and more. The small button or dial next to the pilot light opens the valve to release a little gas.

Newer furnaces don t have pilot lights. A small heat sensing device known a thermocouple makes sure that major gas flow is delivered to the main burners on the furnace only when it is kept warm by the presence of the pilot light. This is typically the problem if you can hear your furnace click on but it does not fire up. These units have electronic igniters that light the gas for the burners while the flame sensor makes sure the burners have lighted successfully.