I have a Intertherm Nordyne gas furnace. MBHA-01 & MMH-05/06/07 series gas furnace. When I went to turn it on, the furnace made a clicking noise, but the ignitor didn't ignite. The system went through this startup routine 3-4 times, and then finally shuts off, and the red sensor light lit up 4 times, which I know is the code for "Ignition Failure (Check Ground)" . What I want to know is, what does this code mean in laymens terms, and is there anything I can do to fix it, before I call a technician. I changed out the #902661A Gas Ignitor Kit, but it did not fix this issue, it repeated the same thing with the 4 blink light code. I have looked at all the green wires in the unit, which I assume are ground wires? But they all look fine.

Is ignitor heating up? (turning red)

No, nothing is happening to the ignitor.