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Question About Lennox International Inc. G23
Primary or Secondary Limit Switch error...

My furnace will get a primary or secondary limit switch error most every morning when the furnace is trying to return the house to normal temperature. I can turn the furnace off then on and the error is reset. How do I know if the switch is the problem or if this is a real issue that is causing the switch to open?

Asked by Gary on 03/23/2009 1  Answer

ManualsOnline posted an answer 15 years, 8 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

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