Floor Furnace

[Nibot]

My furnace quit igniting, so I pulled it out and took it to a service shop to be bench checked. They replaced the limit switch and the PC Board, and it worked fine after installation. Now, however, it will not come on automatically when the temp drops below the set point, but it will come on if I turn off the thermostat for a couple minutes and then turn it back on. It just doesn't seem possible for it to be the thermostat, since all other functions of the thermostat work, like air conditioners, fan etc. I keep thinking about the sail switch?? There is not much else to replace,so any ideas out there???

[Nibot]

My furnace quit igniting, so I pulled it out and took it to a service shop to be bench checked. They replaced the limit switch and the PC Board, and it worked fine after installation. Now, however, it will not come on automatically when the temp drops below the set point, but it will come on if I turn off the thermostat for a couple minutes and then turn it back on. It just doesn't seem possible for it to be the thermostat, since all other functions of the thermostat work, like air conditioners, fan etc. I keep thinking about the sail switch?? There is not much else to replace,so any ideas out there???

[Jeff_in_The_Dalles]

If it were the thermostat, it would seem strange that switching it off for a while, and then back on would make it run...

I think if it were me, I'd call the people who jsut worked on it.