Lennox G51MP Elite Series my furnace is saying the primary

Lennox Furnace Primary Secondary Switch Open. My lennox furnace is blowing out cold air and giving me code primary Limit controls are in the fan compartment and you need to remove the venting etc Lennox G26 The G26 is a condensing 92% AFUE gas furnace

I have checked primary, secondary, roll outs, and pressure switches for continuity and all are good Not something I can walk you thru over the internet w/o other problems occuring

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

The most common reasons for replacing the switch are. Not something I can walk you thru over the internet w/o other problems occuring Gas and Oil Home Heating Furnaces - Lennox furnance turns off

Troubleshooting Lennox Furnace Primary/Secondary Limit Switch Open Issues. It seemed that the blower was not turning on, so replaced the run cap with new 5MF Looks like a counterflow/down flow G24 which is a VERY nasty furnace to work on

My Lennox is saying the primary/secondary limit switch is open. No heat. Lennox G26 The G26 is a condensing 92% AFUE gas furnace However subsequent times when the thermostat calls for heating, the burners light off and then appear to shutdown due to Primary/Secondary limit.