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

Primary Secondary Limit Switch Open. Diagnostic lights are telling me primary/secondary limit switch is open My Lennox is saying the primary/secondary limit switch is open It seemed that the blower was not turning on, so replaced the run cap with new 5MF

Gas and Oil Home Heating Furnaces - Lennox furnace-code for open limit switch - Hi, I have a lennox g40uh-36a-070-02 and have the code for open limit switch I have a Lennox G40UH-36A-070-07 furnace that seems to have a shutdown problem - Primary/Secondary Limit

I have a Lennox furnace. Indicates primary/secondary limit switch open

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. My furnace will run between a few hours to a few days but eventually, it'll stop working Does it mean that the unit is overheating? Any help is greatly appreciated!

Troubleshooting Lennox Furnace Primary/Secondary Limit Switch Open Issues. Does it mean that the unit is overheating? Any help is greatly appreciated! 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.

Troubleshooting Lennox Furnace Primary/Secondary Limit Switch Open Issues. Customer: My Lennox G40UH is saying the primary/secondary limit switch is open It seemed that the blower was not turning on, so replaced the run cap with new 5MF