Luxaire gas furnace blowing cool in the AM


  #1  
Old 01-02-20, 08:41 AM
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Unhappy Luxaire gas furnace blowing cool in the AM

This is a gas furnace Luxaire TG8S080812MP11A about 10 years old. For the last three mornings this furnace has been blowing cold after pulling temp up just a couple of degrees. When I cut pwr to unit and wait a minute, she behaves normally and will be good for the rest of the day maintaining 68F, but it's that temp pull up from an overnight 63 to just 68 (930pm--0646am) that messes something up. What do I do to fix?
 

Last edited by gagaatthegogo; 01-02-20 at 11:28 AM.
  #2  
Old 01-02-20, 09:25 AM
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What error is it failing on?
Cycling power is resetting the error that the furnace is off on.
What is the model number of the furnace?
 
  #3  
Old 01-02-20, 03:28 PM
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Luxaire TG8S080812MP11A about 10 years old. I haven't checked for a blink code. I forgot about that feature. The next time it fails I'll go to my knees and get that.
 
  #4  
Old 01-02-20, 03:30 PM
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It’s likely a limit but we need to be certain.
What air filter are you using and is it clean? All vents open in the house?
 
  #5  
Old 01-03-20, 07:54 AM
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For the sake of doing SOMETHING, I removed the panels, blew some compressed air to dust it out, polished the flame rod with emery, changed the filter and harvested a pound of cobwebs. This morning the unit is behaving normally. I wish I knew what it was I did that helped.
 
  #6  
Old 01-03-20, 08:14 AM
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When was the last time your furnace had a preventative maintenance?
This equipment needs yearly maintenance to run properly.
 
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Old 01-04-20, 02:25 PM
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You're right, I need to call my local serviceman (or woman) and be done with this hassle.
 
  #8  
Old 01-04-20, 03:13 PM
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Did the furnace fail again?
 
 

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