Gas furnace not draining water


  #1  
Old 05-16-19, 05:32 PM
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Gas furnace not draining water

Hi All

My Gas Furnace Lennox , high efficiency is working fine, but not draining water, any solution, will appreciate. ... Thanks for reviewing
 
  #2  
Old 05-29-19, 06:21 AM
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Hi, not a lot to go on here, not draining water where, assuming you are talking about in heat mode.
Geo
 
  #3  
Old 06-04-19, 09:35 PM
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Check all the condensate lines for blockages and leaks.

Check the trap - may need cleaning.

If you notice it runs for a bit and then the pressure switch opens, the trap isn't doing it's job and air is being drawn up through the condensate line, preventing drainage.

It's negative pressure so there can't be any leakage between the collector box and trap, allows air in.
 
 

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