I have a furnace with the spark ignitor and the pilot does not ignite. If I manually light (light paper and put in front of the pilot) the burners will light and the furnace will run for 20 minutes and then shut off before reaching the set temperature. If I just try to run the furnace without manual interference, the inducer comes on, I hear a click, but I don't see a spark from the ignitor or hear multiple clicks. Is the pilot module likely the issue and if so, how do you test the module?


You test to see that the spark igniter is getting proper voltage from the board. If not, it's the board and if yes, it's the sparker itself.

Updated on January 8, 2018

Original Article:

Troubleshooting Common Furnace Problems With an HVAC Expert
By Dan Robbins

Related Questions