Carrier Furnace Ignitor Not Glowing

A technician told us he changes these all the time.

Carrier furnace ignitor not glowing.

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. In order to check the ignitor by testing the circuit and inspecting the furnace for visual damage the furnace must be set at room temperature. Turn the furnace off using the thermostat. They last about 10 years.

Make sure the furnace as at room temperature. This is typically the problem if you can hear your furnace click on but it does not fire up. Turn off the furnace. You might smell some gas.

Also all of your limit controls and other safety devices must be closed a closed circuit between the two connections to allow the furnace ignitor to glow and start the ignition process. Make sure your water drain on a 92 furnace is open. The pilot light or ignition sensor is usually the most common issue when your furnace will not ignite. If too much water backs up into the draft inducer it will not allow the pressure switch to close.

The ignitor did not glow the flame sensor a small metal probe about 1 8 in diameter with a white porcelain base does not sense the flame so after 8 to 10 seconds the hissing sounds stops with no ignition of gas to heat your home. The goodman furnace may not be receiving an adequate gas supply if the glow ignitor turns on but the furnace cannot ignite. Here are a few steps to check your ignitor and determine if it needs to be replaced. Find the gas supply valve next to or behind the furnace and rotate the valve to the open position typically by twisting counterclockwise.

Like many gas furnaces our furnace uses this hot surface ignitor it lights up like a glow plug every time the burner needs to light so it cycles hot cold thousands of times. It eventually cracks and burns out like a burnt out light bulb. Turn the furnace off and leave the house.