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the condensate drain is clogged and full of water-or the vacuum switch pot underneath the inducing fan is not working. if you suck in on the hose you took off and it starts working then you know it is the vacuum switch.
check to see that your condensate line is not plugged. next check the p-trap where your line goes in. also check your flue abs flue pipe see as it comes out of roof is it open or does it have an elbow coming off of it i usually install with elbow preferably less water goes in the units resevoir hope that helps u
is the furnace fairly level? doesn't have to be prefect,but way off will cause a problem. remove front covers to find source of water.there are some drains that arn't used and have rubber caps.hoses have clamps and go to box on side which drains to a drain.if source isn't obvious,thats more serious,water on the board will ruin it.
First of all the water is normal in a 90+ efficient furnace. However it should be draining off before there is a problem. If the furnace was installed correctly there will be a couple of drain hoses near inducer motor that lead to a main collector on the side of the furnace. Check that those drain hoses are clear of debris and that the plastic collector on the side of the furnace has standing water in it too. From here continue checking for blockages in the drain system all the way to the floor drain or termination point. Hope this helps.
Make sure all drains and hoses are connected to the lowest positions and that they are free of any blockage or debris. If there is not a vent or stand pipe on the drain line as it exits the furnace cabinet, put one in. A stand pipe is a Tee with a vertical pipe going up approximately 5" and allows the water to drain easily by breaking the vacuum normally experienced by the inducer blower.
No. The installers did not properly plumb you hose. You have a high efficientfurnace which is really nice. However, this furnace takes out moister from the air when heating, causing condensation. I would look at the installation manual and see if they installed them properly. They might of installed the wrong unit for you home. Most Goodman furnaces can only be installed up-flow meaning in the closet or horizontal installed meaning in the attic. Look at the installation manual to see if they installed the right unit for your home. www.fastacservice.com
For anyone who finds this question in the future - It's the condensate drain hose for the heat exchanger.
Get a bucket and some towels handy and unplug the lowermost flexible rubber hose - if you do this right after the furnace has stopped, water will come gushing out. Mine was continually plugging up causing my furnace to stop, like yours - the L shaped plastic tube that dips into the drain trap on the outside of the unit (the thing filled with water) was too close to the bottom of the trap. I took it out, shortened it by 1/2 an inch (keep the same bevel that's on there!) and I haven't had a problem since. Blowing out the line would only hold things off for a few weeks before it started acting up again.
Cost me $90 for a service call the first time since visually it looks fine and I checked the upper hoses that go to the pressure switch :)
Learn from my service call!
Your furnace is more than 90% efficient and extracting so much heat from the gas that it condenses instead of blowing out steam. This is good! Figure that for every dollar you spend on fuel, you are getting back 90+ cents back in heat. Compare that to the typical units that only get 70 - 80 cents back in heat. Yes you should drain your condensate to a proper drain via gravity or a condensation pump. I would recommend you treat the condensate first with a acid neutralizer prior to draining in municipal drains due to it's high content of sulfuric acid. You can purchase these filter type neutralizers on the net or at a good heating wholesaler.