The pilot is not lit therfore there is no heat what steps should I take or what parts should be replaced thanks so much

Usually it is the glow coil or ignitor that is defective. Your unit does not have a pilot light it uses a ignitor that glows to cause the gas to light.

Hvac1000 just wanted to say thanks u were right and saved us a service repair call

Good deal. Glad you got it going.