Question about Goodman GMS90703BXA Heater
There is water leaking out the bottom of my Gas Goodman Forced Air Furnance. I have the overflow tubes all hooked up. This is the 6th year using this furnace and have never seen this before. What would cause this? What should I check?
I have a forced air gas furnace and water is leaking from just above the area where the hose is attached. I removed the cover but cannot figure this out. It only leaks (a lot of water) when the furnace is running. Please help asap!!! Tthanks so much, Dianne
Posted on Jan 03, 2010
That model should be a 93% efficient furnace which means it is a 'condensing' furnace. It has a coil designed to extract the 'latent heat of vaporization' from the flue gasses reducing flu temps from 450 degrees down to 120 degrees or so. In doing so, water vapor is 'condensed' out of the flu gasses and passes out of the second and lower drain of the furnace. It appears that there is a problem in either the "P" trap or drain line of the condensing circuit necessitating disconnection and cleaning.
I doubt the problem is in the a/c circuit, though remotely possible. The a/c would have to be stuck on and the evaporator would be freeze solid when the heat would be off then thaw partially when the heat is on overflowing the drainpan. Possible...but improbable considering this is a condensing furnace.
Posted on Nov 25, 2014
During heating season there should never be condensation build up, this is a symptom of the AC running. Check your outdoor AC unit to see if it is running while the heat is on. If so this is an indicator that your control board is cooked. A temporary fix is to disconnect the power to the outdoor unit via the quick disconnect or possibly an independant breaker for the condenser unit in your circuit box. Have a pro check the control circuit, and replace it if it shows bad.
Posted on Oct 19, 2014
Had the same problem. I pulled the drain hose off of the fitting and blew it out-- no clogs. Had to unscrew the elbow fitting that looked like it was cemented into place. The whole thing unscrewed from the side of the HVAC. A little flood of water spilled out of the overflowing drain pan. Blow out the fitting as well. Dirt was clogged in the bend. Also, use a long skinny brush (like for cleaning bar glasses) and remove any build up in/near the drip pan. Do it in the spring before A/C season.
Posted on Feb 17, 2011
Tips for a great answer:
Jan 19, 2011 | Heating & Cooling
Dec 24, 2010 | Heating & Cooling
Aug 22, 2010 | Heating & Cooling
Aug 09, 2010 | Heating & Cooling
Oct 13, 2009 | Goodman Heating & Cooling
Oct 13, 2009 | Goodman GMS90703BXA Heater
Jan 21, 2009 | Heating & Cooling
Oct 05, 2008 | Goodman Heating & Cooling
If the exhaust comes off the top of the furnace, you will need to make sure the condensation will drain all the way back to the condensate outlet found at the base of the inducer blower. If you are having to remove the tube from the pressure switch, there must be a blockage from the inducer down to where ever it drains to. Check to see if all tubes are free of blockages and if there is a condensate trap, clean it out. If the pressure tube you mentioned is facing up toward the blower allowing water to flow into it, reposition it so water will not enter the tube.
Oct 17, 2007 | Ruud UAKA030 Air Conditioner
9,392 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: