Where is the picture. Go to (Go Advanced- manage attachments) to upload one. What is the complete model # of the furnace and serial #. Several Lennox techs here.
Lennox Furnace - Primary or Secondary Limit Switch Open
My furnace stopped working today. It will turn on for a few seconds and then back off again, occasionally turning on for closer to a minute. The lights indicate that a limit switch is open. I've read enough where I think I can figure out if the limit switch is the problem by taking out the wires and bypassing the switch to see if it works and then just get a new limit switch. I don't know what the limit switches are, however. Can anyone tell if this is a good idea, and where in the attached pictures the limit switches are that I should be testing?
