I have a Lennox 28K6201 control unit. It is flashing code = Primary or

Lennox Primary Secondary Limit Switch Open. Troubleshooting Lennox Furnace Primary/Secondary Limit Switch Open Issues I don't know what the limit switches are, however. At the day one after the installation it started to show the notification "Primary Limit Switch Open": 845583 The installer was trying to convince me that it's normal and it will go away

We just moved into a home with a Lennox G26 Forced Air Furnace Been having a problem the last couple of days where the gas is shutting off after running 5-10 minutes

My Lennox is saying the primary/secondary limit switch is open. No heat

Thermostat is fine I think Contractor's Assistant: Do you plan on doing the work yourself? Customer: If I can Contractor's Assistant: Anything else we should. I've changed out the filters and taken off the squirrel cage fan on the front and shook out some dust but it wasn't. I don't know what the limit switches are, however.

Lennox furnace primary/secondary limit switch open. No heat, filter is. 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 My furnace will run between a few hours to a few days but eventually, it'll stop working

My Lennox is saying the primary/secondary limit switch is open. No heat. Gas and Oil Home Heating Furnaces - Primary/Secondary limit switch open for Lennox G26Q2-50-4 - My furnace was blowing cold air so I looked the diagnostic light to determine that it was displaying the primary/secondary limit switch open message This video provides step-by-step instructions for replacing the safety limit switch on Lennox furnaces