My concord furnace blower works but the burner will not ignite,after a few seconds the blower shuts off.

Which blower turns on. The draft inducer or the main blower? Lets have some more info, and we will try our best to help.

The main blower comes on and after a few seconds it stops.I don't know if the igniter is working and that is the reason the burners don't turn on

Could you post a pic of your funace(inside and out, the more pics the better)

I turn on the switch on the thermostat but nothing happens when I go and check the furnice the light tells me that everything is OK