I have a Red T gas furnace model number: DGAA077BDTA. The Green light flashes once, I was wondering if it could be the gas valve?

Red T is the same as Evcon Coleman. Does the flame ever light? If not, during the ignition process is there a glow in the burner area? If I remember right, that furnaces uses a hot surface ignitor.

Furnace ignites &runs forhouseever still doesn't heat the

Cheverlet1,
Try your question again. It seems part of it got lost.