My lennox furnace is blowing out cold air and giving me code primary

Lennox Primary Secondary Limit Switch Open. My Lennox is saying the primary/secondary limit switch is open. No heat The LEDs finally gave a code of "Primary/Secondary Limit Switch Open". The most common reasons for replacing the switch are.

I don't know what the limit switches are, however. According to schematic diagram this should mean that

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

This video provides step-by-step instructions for replacing the safety limit switch on Lennox furnaces After two years the furnace died and it was replaced yesterday with the new. Customer: My Lennox is saying the primary/secondary limit switch is open

My lennox furnace is blowing out cold air and giving me code primary. After two years the furnace died and it was replaced yesterday with the new. However subsequent times when the thermostat calls for heating, the burners light off and then appear to shutdown due to Primary/Secondary limit.

Troubleshooting Lennox Furnace Primary/Secondary Limit Switch Open Issues. The most common reasons for replacing the switch are. 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