Question about Goodman GMS90703BXA Heater

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Furnace kicks in..gas flows but does not light...can light with a match and works fine

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Does it have a thermacouple

Posted on Dec 11, 2009

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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My gas furnace will kick on and run about 20sec then shuts all the gas off to the furnace.


call in a gas technician
indicates that the light sensor has failed and it that doesn't see a flame in side a set period , it shuts off the gas flow so that the unit doesn't become a hugh explosive device

Oct 11, 2018 | Heating & Cooling

1 Answer

Pilot light is not staying on


Can you see the pilot light, and the Gas valve?--- When you press the START valve Button (Usually red)- does gas flow at the pilot?-- can you light it?
Let's figure this out together...Mack

Nov 23, 2016 | Heating & Cooling

1 Answer

Fasdfas


Does the furnace stays off?.
Furnace are ment to cycle on and off because of limits .If you set to 70 furnace would cycle several times before reaching that temperature.
Just make sure your filters are clean and you got proper return air flow because lack of air flow will cause furnace to shut off sooner than normal

Jun 08, 2017 | Heating & Cooling

1 Answer

I have a goodman gmp075-3 furnace, blower and igniter are working fine but not getting any gas to get furnace going


Check if 24 volts is being sent from the board to the gas valve, if not the board is nad and will need to be replaced, if there is 24 volts at the gas vlave terminals then the gas valve must be replaced.

Nov 08, 2012 | Goodman GMS90703BXA Heater

1 Answer

The furnace starts and everything works fine but the furnance does not turn off when it reaches the set temperature. I replaced the thermostat, however this did not solve the problem. what else could it...


You must match the amp draw of the gas valve to the wall thermostat heat anticipator.
Look on the gas valve and say it is .3 amps. Put the arrow on the .3 amp portion on the wall thermostat. If you do not know the amp draw of the gas valve their is equipment that can be used to determine that amp draw. Setting the thermostat to match the valve greatly reduces Overshoot or droop. That is where you dang near freeze before the thermostat kicks in and then burn up when it finally shuts down. I hate that. READ MORE ABOUT IT HERE

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

Nov 16, 2010 | Heating & Cooling

1 Answer

Furnace will not light. Igniter glows but no gas


Make sure that the switch on the gas valve is in the on position. If it is and the gas valves coming into the furnace are open, you probably have a bad gas valve.

Oct 03, 2009 | Heating & Cooling

1 Answer

Lighting the pilot light


The steps involved can vary slightly depending on your furnace model and pilot valve type, so if possible try and find the instructions inside the furnace door cover or in the instruction manual. This is for a gas fired furnace, but applies to any gas-fueled appliance including water heater. Two of the most common types of pilot valve body assemblies either have a red reset button and a gas valve or no reset button and a valve knob that can be depressed. But whichever type you've got, if you have an older model furnace with a standing pilot (flame is lit all the time) then this is the basic procedure.
  • Turn you thermostat to 80 degrees or to a setting that will demand heat. Make sure the thermostat is in "Heat" mode.
  • Go to the furnace and find the pilot valve. The pilot valve body is a box shaped device into which the main gas line will run and is located near the gas burners. It will usually have a gas **** or valve knob that reads "On, "Pilot" and "Off." Locate this gas **** or knob.
  • Turn the knob or gas **** to the "Off" position and wait about 3 minutes for any residual gas to clear away.
  • Find the pilot. It's located near the gas burner tube assembly in the furnace.
  • Get your match or lighter ready. Sometimes the pilot is hard to reach. If possible, try and use a long fireplace match when you light it. If you don't have a fireplace match then a butane BBQ grill lighter works well too. If you don't have that, then you can fasten a match to the end of a stick when you light the pilot
  • If you have a pilot with a red Reset button, turn the gas valve from "Off," to "Pilot."
  • If you have a pilot with no red button, turn the knob from "Off" to "Pilot."
  • Place the lit match or ignited lighter tip at the pilot and depress and hold the button or depress the knob as appropriate. Depress the button or knob for about 30 seconds. This maintains gas flow to the pilot until the thermocouple gets hot enough to open the main gas valve.
  • Once the pilot stays lit, slowly release the button or knob and turn the gas **** or knob from the "Pilot" position to the "On" position. This will ignite the burners and keep the flow of gas supplied as required for the burners as called for by the thermostat.
  • If the burners fail to ignite then it may be because the thermocouple did not get hot enough to open the gas valve. Wait a few minutes and then repeat the above procedure. This time hold the red reset button or depress the knob for about 45-60 seconds.
  • Once the main furnace burners ignite, adjust the thermostat to the desired setting.
  • If you've followed the previous steps on lighting the pilot and it still does not light after, or will not stay lit, then you probably have a problem with the thermocouple or an adjustment needs to be made to the pilot. You'll need a furnace service technician to replace or repair these parts. You may find that the pilot lights, but it is an anemic looking flame. That's a different problem we'll look at in the next section.
  • If the pilot lights but the flame is a weak yellow flame, it will not get hot enough to heat the thermocouple to its set point allowing the gas valve to open.
    A natural gas flame should be a bright blue with the tip of the flame having just a tinge of yellow. A propane flame should have a bluish green flame with a tinge of yellow at the tip. The flame should be strong enough to hit the thermocouple tip about 1/2 inch from the tip end. If the flame is weak or shaky looking, check to see that a breeze or draft is not blowing on it. Adjusting the Flame
    There is usually a small screw on the pilot valve body that will adjust the flame. You may have to refer to the manufacturer's instructions to find the screw. Turn the screw as needed to adjust the flame throw. Yellow Flame
    A yellow flame is caused by lack of air and incomplete combustion. It can be caused by a dirty pilot tube tip. Split Flame
    This is caused by dirt in the pilot tube. Take a needle or small nail and gently clean the tube. Flickering or Wavering Flame
    A flame that flickers is usually caused by a draft.
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Feb 18, 2009 | Water Heaters

3 Answers

WeatherKing Acclaim II


  1. The sensor that tells the furnace whether the gas is lit has got build-up on it and is giving the furnace bad information.
  2. The flame sensor is often a single wire or rod that sticks up in the center of the flame.
  3. You can shut off the furnace and the gas and clean the sensor with some sandpaper.
If that still doesn't work, the sensor may need to be replaced.

Please rate this solution.

Jan 16, 2009 | Heating & Cooling

1 Answer

1986 Weathermaker SX 150 series, model S85X060-CC-1


There are 4 -steps for full run time to kick in a furnace.. step-1, inducer fan runs & prove thru the air tube which closes a switch and tell the circuit board to go to step-2, the igniter lights the pilot & prove its lit by heating the thermocouple, which tells the circuit board to go to step-3, opens the gas valve to dump gas in, which will light from the pilot light, and prove by a flame sensor metal stick on the last burner , which heats up and tell the circuit board Saying, ok , I've got flame.. step-4. when the box heats up, it closes a switch and turn on the main fan...! (Some gas-valves has a brain -or circuit board on top of them and are real sensetive to moisture..)

Sep 05, 2008 | Heating & Cooling

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