Question about Goodman GMS90703BXA Heater

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Model GKS90703BXAA I believe the drain is hooked up wrong. I don't have instruction manual. When I opened up the fan and dumped the water the unit worked fine. How can I find out what is wrong with the drain?

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Re: Model GKS90703BXAA

Here is a link to get your installation manual
It will describe how to hook up the condensate drain.
Good Luck

Posted on Dec 19, 2007

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Heater comes on with water

please see the next step:
he pilot light may be out or may not stay lit. There may not be enough hot water, or the water may be too hot. The water heater may leak or be noisy, or the hot water may be dirty.
A problem with your water heater may be due to overwork, not mechanics. If your water heater holds less than 15 gallons per family member (tank volume is stamped on a metal plate affixed to most water heaters), consider a larger unit or staggering your use of hot water.
Drain a hot water tank:
  1. Turn the gas-control knob to off and close the gas-shutoff valve.
  2. Close the cold-water supply valve and open a hot-water faucet in the house to speed draining.
  3. Attach a garden hose to the drain valve and run it outside to a drain. If the heater is in the basement you may need to run the hose to or through a sump pump.
  4. Open the drain valve and allow the tank to drain.
  5. Once done, close the drain valve, open the cold-water supply valve, and open any nearby hot-water faucet. When a steady stream of water flows from that faucet, the tank is full; close the hot-water faucet.
  6. Once the tank is full, turn on the gas and relight the pilot.


Jul 31, 2012 | Heaters


How to Clean Hot Water Heater

You may just think that you need to clean it out or you may be getting cloudy dirty water from it. Anyway, you want to clean out the hot water heater but have no ides how to do it.
Here are the steps you need to take to get the job done.

Before beginning it is a good idea to have a new pressure and temperature relief valve and a new drain valve on hand to use if needed. If you don not have a valve on your cold water line going into the hot water heater then you need to install one or have one installed.

First you need to shut off the gas or electric to your hot water heater, which ever way you heat your hot water.

Next hook up a hose to the bottom drain valve of the hot water heater. Run this hose outdoors or to a floor drain.

Open the drain valve to start the water flowing out of the tank. The relief valve will then need to be opened to allow air to go in to replace the water going out. If you do not allow air to go into the tank it will air lock and no water will flow out.

When the tank is empty you can then start the cleaning process. To do this you will need to open the cold water valve full on for a half minute or so. Then let the water and sediment drain out. Reopen the cold valve again and then drain. Repeat this process until you get clean clear water when you drain the water. Then you know that the tank is clean.

If the drain valve gets plugged when empting the water, you may need to use a wire to unplug it or even replace the drain valve.

The relief valve will often leak after opening it to allow the air in. It is best to replace it to be sure you will not have a leak.

Be careful of the hot water as you initially drain the tank.

Refill the tank and open a hot faucet to release all the air from the tank as you fill it.
When you get water out of the hot faucet again, you can restart you heater by lighting the burner or reapplying power to the heater.

You now have a nice clean hot water heater again!!

on Feb 03, 2010 | Heaters

1 Answer

My Goodman model GMS90703BXA has a problem wherein after a cycle, the ventilator / discharge fan doesn't shut down properly. It stays on after the burner has shut off and after the main fan has shut off. ...

Hello, usually this happens when the pressure switch remains open, this could be due to a blocked flue pipe, water inside the tube between inducer motor and pressure switch, or the switch itself is going bad. Condensation can form and leak back to the pressure switch through the tubing and causing an intermittent problem with the inducer motor running continuously

Mar 01, 2011 | Goodman GMS90703BXA Heater

2 Answers

My comfort zone heater is cz499r with remote, I posted a comment earlier about my heater smoking and not turning on, my return date ended jan. 15 is there anything i can do? I got the heater from big lots!

What you have is a very dangerous situation. It may not be a newness smell. It may be the plastic melting. Many of the Comfort Zone heaters were recalled in December 2010. Search Google for Comfort Zone Heater Recall to see if your specific model was included

Big Lots has some great pricing and deals, but some of their electric appliances are Factory Refurbished Units. If that is the case, it is required that the box it came in must indicate that.

Jan 27, 2011 | Heaters

1 Answer

I am trying to drain my electric water heater: Servistar, model no.06443 serial no.0496B02329, watt: 1-PH,Upper 4500 240 volts only, Lower 4500 Cap. U.S. Gallons 50 Total 4500 I closed the cold water...

Where you connected the hose there should be a round handle,make sure that it is open. If water still
does not drain out, it is possible that it is limed up.

Get a bunch of bedsheets ready! Make sure water heater has cooled down, open the drain valve, if no water comes out then stck a long screwdriver and try
to poke it inthrough the valve. Be ready alot of water
or a little water should come out be ready to stick
garden hose back on. This should start draining

Feb 06, 2010 | Heaters

1 Answer

I have a york 90%+ furnace the inducer fan fills with condensation passing into the pressure switch. I have took apart the condensate pump motor cleaned it and the pan,I have blown thru all condensate...

Make sure that the drain line outside is only about 6" long it may be freezing up. Does the Condensate pump have a safety switch to kill the power if it runs over? If it does it should kill power to the heater. Make sure the drain has a fall. Check the install manual to make sure the hoses are hooked up right.

Jan 04, 2010 | Heaters

2 Answers

Rheem Classic Series Super Quiet 80 gas furnace problem

I have this same POS model. It is not the thermostat. this model is just garbage and cant wait to get something that works right. i have been fighting this thing for 4+ years now.

Dec 25, 2009 | Heaters

1 Answer


Check your vent termination and air intake for obstruction or debris. Inspect the vent pipe for sags that could keep water in the pipe and not allow it to drain back to the unit. Check for water in the inducer fan as well as any tubes to the pressure switch and to the condensate drain. Last thing to look at is the air filter, make sure it is clean.

Nov 30, 2009 | Goodman GMS90703BXA Heater

3 Answers

Leaking water

how long have you had the unit,, depending on where you live you might be using your ac in your house and if the installer didn't install the condensate catcher on the flu pipe then you wil have water runing out of the unit, if it is happening all the time then you would need to have a service tech come out that would meen something like the tank or a water line is broken,, but since you said it's coming from the side I would have to say it is condensation

Jun 04, 2009 | Goodman GMS90703BXA Heater

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