Question about Goodman GMS90703BXA Heater

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Furnace one flashing , has to be shut off too start

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Remove the front access panel and look at the wiring diagram. There should be a diagnostic chart that will help you narrow down the cause.

Posted on Nov 25, 2008

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Therinnaiguy
  • 1420 Answers

SOURCE: furnace won't stay running

1
1 FLASH
Furnace fails to operate.
• Integrated control module
diagnostic LED is
flashing ONE (1) flash.
• Furnace lockout due
to an excessive
number of ignition
“retries” (3 total)1.
• Failure to establish flame.
Cause may be no gas to
burners, front cover
pressure switch stuck open,
bad igniter or igniter
alignment, improper orifices,
or coated/oxidized or
improperly connected flame
sensor.
• Loss of flame after establishment.
Cause may be
interrupted gas supply, lazy
burner flames (improper gas
pressure or restriction in flue
and/or combustion air
piping), front cover pressure
switch opening, or improper
induced draft blower
performance.
• Locate and correct gas
interruption.
• Check front cover
pressure switch
operation (hose, wiring,
contact operation).
Correct if necessary.
• Replace or realign
igniter.
• Check flame sense
signal. Sand sensor if
coated and/or oxidized.
• Check flue piping for
blockage, proper
length, elbows, and
termination.
• Verify proper induced
draft blower performance.

Posted on Nov 25, 2008

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Tip

80%, 90%, and 95% Gas Furnace Manual


http://johnstonesupply9.com/TechDocs/Goodman/Furnaces/GMV9%20Variable%202-Stage%20Upflow%20Gas%20Furnace/GMV9%20Service%20Man.pdf

After giving up on Yahoo, I found this on Google. It's the detailed manual for 80%, 90%, and 95% gas furnaces. Hope this helps!

on Oct 04, 2009 | Goodman GMS90703BXA Heater

1 Answer

My furnace blows but shuts off and green light flashes


YOU MOST LIKELY NEED A NEW THERMOSTAT. You need to make sure you get the correct one they are not all the same.. you will also need to set how long the fan stays on after its stops heating the ducts If you have your owners Manuel look and see what kind it calls for. If your talking about a manufactured home it will be with all of correspondence.. I hope this was helpful and the green light is good but not blinking

Dec 07, 2012 | Heaters

2 Answers

Goodman 95 %furnace keeps saying low pressure is stuck. changed out low pressure switch and high pressure switch and still have same problem.


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.

Dec 10, 2010 | Goodman GMS80903BNA Heater

1 Answer

My 95% Goodman is only four years old. I attempted to turn it on this fall and got a continuous flash which indicates reverse 115 volts. How could this be since no one has touch the furnace all summer?


Hello my name is Heath it will be my pleasure to assist you. You can try reversing the wires in the furnace but this is usually a good indication that the circuit board is bad.

Oct 03, 2010 | Goodman GMS90703BXA Heater

1 Answer

GMP075-3 intermittantly will run then shut off and not start


The led is flashing your fault code. You can look the code up by looking on the inside of your indoor blower panel. Please let me know what the trouble code is. I am guessing you will get a induced draft fault.

Feb 01, 2009 | Goodman GMS90703BXA Heater

1 Answer

Furnace starts properly, then shuts down, led flashes 8 times


The first thing to look at is the flame sense rod.
Shut off power to the furnace, remove, clean sensor with steel wool or sandpaper then reinstall the sensor. Reapply power and it should run properly.

Jan 10, 2009 | Goodman GMS90703BXA Heater

1 Answer

Furnace is not staying lit


if the main burners are firing but goright out it could be the flame sensor which is a straight wire with one wire going to it you can clean it with steel wire or fine sand paper if not check the flashing code on the control board

Dec 25, 2008 | Goodman GMS90703BXA Heater

2 Answers

Furnace won't stay running


1
1 FLASH
Furnace fails to operate.
• Integrated control module
diagnostic LED is
flashing ONE (1) flash.
• Furnace lockout due
to an excessive
number of ignition
“retries” (3 total)1.
• Failure to establish flame.
Cause may be no gas to
burners, front cover
pressure switch stuck open,
bad igniter or igniter
alignment, improper orifices,
or coated/oxidized or
improperly connected flame
sensor.
• Loss of flame after establishment.
Cause may be
interrupted gas supply, lazy
burner flames (improper gas
pressure or restriction in flue
and/or combustion air
piping), front cover pressure
switch opening, or improper
induced draft blower
performance.
• Locate and correct gas
interruption.
• Check front cover
pressure switch
operation (hose, wiring,
contact operation).
Correct if necessary.
• Replace or realign
igniter.
• Check flame sense
signal. Sand sensor if
coated and/or oxidized.
• Check flue piping for
blockage, proper
length, elbows, and
termination.
• Verify proper induced
draft blower performance.

Nov 23, 2008 | Goodman GMS90703BXA Heater

1 Answer

New 95% goodman keeps giving Code 1


Not having a model number to help you with, I can only give you generic info. Typically a flashing 1 represents that the furnace has exceeded its allowed attempts to start. Not much help. If I can suggest removing the access panel on the furnace and tape down the door safety switch. That being done, have a helper turn up the thermostat and you get your head inside the furnace cabinet and document what it does. It should first blink on the LED indicating a call for heat. Next the inducer blower should start up (the small blower hooked to the exhaust pipe). Next you may see an orange glow where the burner is. There should be a small clear port where you can watch this. Next some clicking should be heard from the gas valve. Then the orange glow should turn to a blue flame. This flame should travel all the way right and left igniting all the burners. Then it should stay on until the call for heat is satisfied.

After doing this and with your model number, get back to us and we may be able to pin-point your issue.

Dec 24, 2007 | Heaters

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