I have a luxaire high efficiency furnace made in 1994 that is getting the error code for the pressure switch being stuck open. I took the rubber hose off to make sure it didn't have any holes or was clogged and then used a paperclip to clean out the connection by the fan, but it is still flashing 3...

Where is the high limit switch on my luxaire furnace so I can reset it. As soon as it calls for heat the led light flashes red four times and the code is limit switch open. Everything starts up the ventor motor and the blower but there is no flame. I need heat

The furnace seems to start up small fan starts OK the flame lights then the gas shuts off and the flash code flashes 4 times (limit switch open)??

I have a Concord 80 plus furnace. The code I'm getting is Limit or rollout switch open. The burner goes out after a few minutes and the blower motor keeps running. If I wait it resets itself after 15 minutes it will do it 3 times then it won't reset for an hour. I found two limits on each side of...

My furnace is blinking 4 times indicating that the furnace has an open limit switch. I changed the switch and it is still blinking 4 times indicating the same thing. What else could be wrong or what can I do to fix this problem? ITS COLD!!