20 Most Recent Goodman GMS80903BNA Heater Questions & Answers


the change over would be in the jets and air shroud positions to get the correct burn
talk with a gas fitter as to the regulator settings but if you used the correct jets , the pressure regulation will be that same as it is the jet size that influences the flow rate of a regulator
That is why it is called a regulator and not a tap

Goodman... | Answered on Nov 02, 2017


sounds like induced draft blower. take off door. find grey tube. pull it off. first suck on tube and see if you hear a click from vacuum switch. if yes. then hpefully you have a small enough piece of wire ti inser into top of where tube attaches to motor housing remembering to have power off while doing this. insert wire clear airway and put tube back. power on and test. Good luck

Goodman... | Answered on Nov 26, 2014


That thang might be sensing a lazy flame. In other words the flames took too long in the board's opinion to quit sensing the flame. Yall probably need to do pressure tap on the gas valve.
Here is a realistic look at goodman fault codes and what to check fer and I am assuming you are not a tech and don't know this already and am hoping it helps:


Read one LED flash that stays on continuously to mean your furnace has no signal coming from the thermostat and will not operate. Turn the power off and check the thermostat for improper settings or connections.

Interpret one LED flash that blinks on and off to mean your furnace has locked out because it could not ignite after three tries, and must be reset. Interrupt power to your furnace for 20 seconds or lower the thermostat so your furnace does not try to heat, then reset the thermostat to the previous setting. After one hour of lockout, your furnace will automatically reset itself and try to operate as usual.

Decipher two LED flashes to mean the draft blower is not working, or your furnace has a short in the pressure switch circuit. Turn off the furnace power and repair a short or replace the pressure switch.


Read three LED flashes to mean your furnace has an open pressure switch circuit or it has an induced draft blower operating. Check the pressure switch hose of your furnace for blocks or an improper connection. Also, look for blockages in the flue, and tighten any loose wiring.

Translate four LED flashes to mean your furnace has a primary limit circuit open, possibly from loose wiring or blocked filters. Check and clean filters, tighten wiring and check the flue for blockages.

Interpret five LED flashes to mean your furnace senses a flame without a call for heat. This could be from a gas valve closing slowly or a burner flame lingering.



Read seven LED flashes as a warning of a low flame sense microamp signal. This could happen with a coated flame sensor or a lazy flame from poor gas pressure. Turn off the power and adjust the gas pressure according to the information on the rating plate.



See eight LED flashes as meaning an igniter circuit problem due to a bad igniter or an igniter connected improperly. Replace the bad igniter or check the ground wiring, making necessary corrections.



Decipher nine LED flashes to mean the high-stage pressure switch circuit will not close during a high-stage-induced draft blower operation. Your furnace may have a pinched or blocked pressure switch hose, a blocked flue or loose wiring.

Read continuous flashing on the LED to mean your furnace has a reversed polarity of 115 volts. Turn off the power and correct the wiring polarity after reviewing the wiring diagram.

Now here is how it should all go down:



Bottom dollar: it all goes back to type of gas, the initial setup, the pressure tap. and how it is wired up to begin with.
This will give you an idea where to start I hope.

If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61

Goodman... | Answered on Nov 23, 2014


What won't stay working? Does hot air come out when you turn it on and then is stops working, or does it not even heat?

Goodman... | Answered on Oct 18, 2013


Youcould be loking at the pressure switch try jumping it out and see if it lights some times you can fool it in to working , check the hoses are tight and nor spilt or take a drill bit and just clean out the 2 ports where the hoses fit some times they get blocked , also check you air filter is clean and your fan

Goodman... | Answered on Dec 20, 2012


Hello, what i do and have done with mine, is I have taken it down to Home Depot and they match it up. However another thing I have done, is they make filter that you just cut to size. They are cheaper than actually buying the one that fits it by manufacturer. It comes in a section, and you just get out some snips and cut it to size and save yourself lots of money, and they work just as good. Mike

Goodman... | Answered on Nov 05, 2011


Your Goodman furnace has a self-diagnosing control module with an LED light that flashes red to let you know if there is a problem with the furnace. Locate this LED through the blower access door's observation window on your furnace. The number of flashes you see tells you the trouble code so you can diagnose the problem, know where to start troubleshooting and get your furnace up and running again.

1.Read one LED flash that stays on continuously to mean your furnace has no signal coming from the thermostat and will not operate. Turn the power off and check the thermostat for improper settings or connections.

2.Interpret one LED flash that blinks on and off to mean your furnace has locked out because it could not ignite after three tries, and must be reset. Interrupt power to your furnace for 20 seconds or lower the thermostat so your furnace does not try to heat, then reset the thermostat to the previous setting. After one hour of lockout, your furnace will automatically reset itself and try to operate as usual.

3.Decipher two LED flashes to mean the draft blower is not working, or your furnace has a short in the pressure switch circuit. Turn off the furnace power and repair a short or replace the pressure switch.

4.Read three LED flashes to mean your furnace has an open pressure switch circuit or it has an induced draft blower operating. Check the pressure switch hose of your furnace for blocks or an improper connection. Also, look for blockages in the flue, and tighten any loose wiring.

5.Translate four LED flashes to mean your furnace has a primary limit circuit open, possibly from loose wiring or blocked filters. Check and clean filters, tighten wiring and check the flue for blockages.

6.Interpret five LED flashes to mean your Goodman furnace senses a flame without a call for heat. This could be from a gas valve closing slowly or a burner flame lingering.

7.Read seven LED flashes as a warning of a low flame sense microamp signal. This could happen with a coated flame sensor or a lazy flame from poor gas pressure. Turn off the power and adjust the gas pressure according to the information on the rating plate.

8.See eight LED flashes as meaning an igniter circuit problem due to a bad igniter or an igniter connected improperly. Replace the bad igniter or check the ground wiring, making necessary corrections.

9.Decipher nine LED flashes to mean the high-stage pressure switch circuit will not close during a high-stage-induced draft blower operation. Your furnace may have a pinched or blocked pressure switch hose, a blocked flue or loose wiring.

10.Read continuous flashing on the LED to mean your furnace has a reversed polarity of 115 volts. Turn off the power and correct the wiring polarity after reviewing the wiring diagram.

Goodman... | Answered on Sep 15, 2011


adjust the gas pressure on the gas valve or replace the gas valve

Goodman... | Answered on Apr 12, 2011


take front panel off where light is and look inside there will be a chart telling you whats wrong

Goodman... | Answered on Feb 09, 2011


3 blinks is fault with the pressure switch not working try jumping it out some times you can fool it in to working

Goodman... | Answered on Feb 05, 2011


did you remove your furnace doors? they need to be in place for the furnace to work.make sure they are in place correctly

Goodman... | Answered on Feb 03, 2011


Check to make sure there is not a gas valve turned off somewhere, or check the "on" "off" switch on the gas valve inside the furance. Remove top front panal to locate.

Goodman... | Answered on Feb 01, 2011


That blinking 3 times is indicating a pressure switch problem. Try checking for water or a blockage in any of the hoses going to the pressure switch or condensate drain. Check the air intake and exhaust pipe for any blockage including any saggs that may hold water. Make sure condensate drain or pump is working. If you get a glow from the igniter, there may be a blockage in the gas valve or piping.

Goodman... | Answered on Jan 25, 2011


I suppose this furnace is fueled by Natural Gas?
(Or is it Propane-- Bottled gas?)

Did the Service company leave you any manual, with your new furnace?
and I would think there was a warranty, for assuring you (the customer) satisfaction, no?
Have you called the people who sold/installed it?
What do they say?

If they did leave a manual-- what does it suggest for narrowing down your possible problems?
Like: Low Fuel-- Low Voltage- Filter Changes, Fan switch problems- or ignition failure problems?

For a new furnace, someone should be right there to do a start-up for you!

Let me know what you learn--

Mack B

Goodman... | Answered on Jan 17, 2011


Hi,

Here is a tip that will help you try to figure out why your furnace is not working.

Basic Furnace or Heating System Troubleshooting

heatman101

Goodman... | Answered on Dec 25, 2010


sounds like the thermostat is bad.

Goodman... | Answered on Dec 20, 2010

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