Lennox G24M won't fire up.

[juster]

I looked for the flash codes but have not come across them just yet. Did find this manual.

****://www.****/pdfs/manuals/Lenn ... Manual.pdf

These units have an electronic ignition. When running properly the unit will run when there is a call for heat.

You may find flash codes on the access door to your unit. check it out.