I had a new gas valve installed last night on my older furnace. Today when I got home, it will not light. Any ideas? Thanks!
You don't say if you have a standing pilot or spark or hot surface - if it is a standing pilot check if the anti on the thermostat is ok and set properly, is there power to the furnace. A question like this with the info we have would take longer to write a response than a tec coming over. but I would call the tec that replaced the valve and ask what his warranty is and go from there. You should have a manual that will trouble shoot some areas in this. let us know - Brian