Furnace Not Igniting or Heating? Igniter Testing, Repair

Furnace not igniting or heating? This video demonstrates how to test an igniter on a furnace. The igniter is the most commonly replaced part on a furnace that won’t ignite or heat.

Other commonly replaced parts for a furnace that won’t ignite or heat are:

Flame sensor
Draft inducer motor
Control board
Limit switch
Flame rollout limit switch
Wall thermostat
Gas valve assembly
Pressure switch

All of the information provided in this part testing video is applicable to the following brands:
Amana, Bryant, Carrier, Coleman, Lennox, Payne, Rheem, Trane, York
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York Furnace Disassembly:

How your furnace works:

For additional repair advice and help finding your model number visit the repair help section of our website: Furnace repair help