tableclocks again... I found the limit switch... can I junp the 2 wires to close the switch to see if this is the real proublen..? thanks Rgph 10eamer 100,000,, 80%

The board gives me a code of four flashes and icode said that iy is a limit switch

I have a Concord 80 Plus Gas Furnace. I am starting the furnace for the winter and it gives me a LED code of open limit switch or limit switch circuit. Everything seems to work fine up until the point where the blower needs to turn on. I had the same problem last year but got a tech to fix it. I am...

Four blinks says reset hi-limit switch. Could not reset stuck button so I replaced it. Still blinks four times. What can I try next?

My gas furnace doesn't fire-up although I hear clicking inside every time I attempt to toggle the switch bypassing the thermostat. Is it SAFE to short the LIMIT SWITCH to check it that's the problem. Because I remember the furnace was left for several hours running and then all of a sudden it just...