Carrier Furnace Ignitor Not Glowing

Here are a few steps to check your ignitor and determine if it needs to be replaced.

Carrier furnace ignitor not glowing.

Furnace ignitor doesn t glow when the stat calls for heat the blower runs for a while then shuts down then the inducer runs for a while then shuts down at no time does the ignitor glow. You might smell some gas. 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. This is typically the problem if you can hear your furnace click on but it does not fire up.

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. I put a meter on the wires going to the ignitor and found no power during the start up sequence. 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. It eventually cracks and burns out like a burnt out light bulb.

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. The goodman furnace may not be receiving an adequate gas supply if the glow ignitor turns on but the furnace cannot ignite. Stop immediately if you smell gas. They last about 10 years.

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. The pilot light or ignition sensor is usually the most common issue when your furnace will not ignite. Make sure your water drain on a 92 furnace is open. Turn the furnace off using the thermostat.

If too much water backs up into the draft inducer it will not allow the pressure switch to close. Turn the furnace off and leave the house. Turn off the furnace.