Furnace Pilot Light Sensor

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

Furnace pilot light sensor.

It takes a few seconds to get enough gas in the pipe to start the pilot light. 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. Shop here and find a variety of pilot and thermopile assemblies replacement thermocouples and more. This is typically the problem if you can hear your furnace click on but it does not fire up.

Tape down the safety switch temporarily if you need to keep the panel open to prime the furnace. The small button or dial next to the pilot light opens the valve to release a little gas. 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. Furnace sensor rod fix no heat pilot light on.

Replace gas furnace pilot and ignition components with high quality parts from grainger. Newer furnaces don t have pilot lights. Keep the knob in for 20 seconds and then release it and turn it to the on position. When the thermostat signals for gas to be delivered from the gas valve to the burner it is the standing pilot that ignites the gas flowing to the burners to heat the air in the combustion chamber.

Turn the gas control to pilot and hold it in while you light the flame with a match or a lighter. If your old gas furnace has a standing pilot you can follow a standard procedure to relight the pilot light. 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. 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.