Air Conditioning - drain line freeze in dual fuel furnance
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maximus216
01-20-08, 09:38 PM
Hello,
I woke up this morning to find out that i didn't have any heat. I have a comfortmaker high efficiency system. After inspection, I found that the drainage pvc pipes coming from the condensate drain trap (which is attached to the furnace) froze completely. Never thought this would happen in the attic but it did. I replaced all the frozen pvc pipe with new. I took the condensate drain trap off and inspected it. I also inspected the 3 rubber lines coming into the drain trap and they all seemed ok. I ran hot water through it and got any ice that might have accumilated out. However, when I hook everything back I still have no gas heat. Could a damage drain trap cause the gas heat not to come on? I also hear water inside the combustion blower. I read on the internet that is is caused by the pressure switch no closing.
I woke up this morning to find out that i didn't have any heat. I have a comfortmaker high efficiency system. After inspection, I found that the drainage pvc pipes coming from the condensate drain trap (which is attached to the furnace) froze completely. Never thought this would happen in the attic but it did. I replaced all the frozen pvc pipe with new. I took the condensate drain trap off and inspected it. I also inspected the 3 rubber lines coming into the drain trap and they all seemed ok. I ran hot water through it and got any ice that might have accumilated out. However, when I hook everything back I still have no gas heat. Could a damage drain trap cause the gas heat not to come on? I also hear water inside the combustion blower. I read on the internet that is is caused by the pressure switch no closing.
Jay11J
01-20-08, 09:46 PM
Make sure the drain hose from the inducer fan is open and not frozen. Also hoses from the pressure switch(s) are also clear of frost or ice.
If you have a pipe going outside for intake, make sure the pipes are clear and open.
That's why I never suggest a 90% furnace in the attic cuz of this..
If you have a pipe going outside for intake, make sure the pipes are clear and open.
That's why I never suggest a 90% furnace in the attic cuz of this..