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My Gibson kgs6 furnace only stays lit for 3 seconds then goes out but comes back on I change the igniter I change the flaming sensor I change the gas valve I change the board

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  • 69 Answers

Try moving the gas valve back just a little in the closed direction. Aone valves reclose if open too far. This will let little to no fuel through.

Posted on Nov 19, 2014

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Posted on Jan 02, 2017

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  • 9 Answers

SOURCE: Goodman GMPN060-3 Furnace will not stay lit.has

possible faulty gas valve if all fail safes stay closed. make sure flue is clear for pressure switch to stay closed.

Posted on Dec 16, 2009

Therinnaiguy
  • 1420 Answers

SOURCE: FURNACE COMES ON AND SHUTS DOWN WITHIN 15 SECONDS

On a call for heat, the 24 volt thermostat sends a signal to the control module. The control module will indicate a call for heat with a light on the control either blinking or remain solid depending upon model. The inducer (exhaust) blower will purge all gasses from the furnace and pressurize a pressure switch. Once the pressure switch tells the module to continue, the electronic ignition will energize and send 120 volts to the igniter. The igniter will glow and you will be able to see it if viewed thru the small inspection port. Once the igniter gets hot enough, it sends a signal to the module opening up the gas valve (24 volts). Either a pilot will come on or the burner tube will ignite then spread the flame to all burners. Lastly a safety sensor will be looking for a certain temperature within a few seconds and the furnace will continue to operate and the room air blower will turn on in a minute or two.

What could go wrong? The unit will not run if there is no signal from the thermostat (bad thermostat or broken wire), the control module does not sense a signal from the thermostat (bad control), the inducer does not energize (bad motor), the pressure switch does not close (blocked vent piping, bad switch, plugged condensate hose), the igniter does not energize (bad control, bad igniter), the gas valve does not open or there is no gas (bad gas valve, broken wire, no gas), the pilot does not light (dirty pilot), the burner does not light (bad burner, plugged orifice, not enough combustion air), the flame does not spread to each burner (bad flame spreader, dirty flame spreader, more bad burners), the flame safety sensor does not detect flame (dirty or bad flame spreader, bad flame sensor, broken wire, bad control), or the room air blower does not energize (bad fan motor, bad control). When all else fails, check the ground connection for corrosion.

Posted on Nov 23, 2009

  • 1 Answer

SOURCE: Goodman GMP075-3 ignition problem

Goodman gmp075-3 gas furnace and the flame cycles for 4 sec

Posted on Dec 11, 2009

Therinnaiguy
  • 1420 Answers

SOURCE: Gas furnace; flame will not stay on

Clean the flame sensor with a green scotch brite pad. Check all ground connections from the circuit board to the furnace cabinet. Check for a proper ground to the electrical box. Make sure polarity has not been reversed.

Posted on Dec 26, 2009

Therinnaiguy
  • 1420 Answers

SOURCE: Goodman GMP Furnace problem. Original problem is

Good one! Is the flame getting to the flame sensor within the few seconds? Maybe a good cleaning of the burners or flame tray would help. 1.3 ma is enough for the flame rod to tell the board to stay on. Re-do all the ground connections both at the board and furnace cabinet to be safe. Check the polarity of the power going to the furnace. What are the chances the second board is bad?

Posted on Jan 15, 2010

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Furnace won't stay lit. Intertherm Model M2RC-080A-16BN. Ignightor glows, flame starts and after a few seconds the flame shuts off. Then it starts the cycle again. It goes thru this cycle a fe


It sounds like the flame sensor is bad. If thats not the case you may need to replace the control board. You should make sure the flame sensor is directly into the flame.

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Janitrol GUPS075-3 Furnace burners will not stay lit


The first thing I would do is make sure the flame sensor is clean, this is a metal rod immersed in the burner flame on the opposite side of the igniter. If too much oxidation builds up on it, it will not allow the burner to stay lit. To clean, just turn off furnace and remove flame sensor and clean with steel wool and then reinstall. If this does not solve the problem there may be a problem with the gas valve.

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Hello, if the burners light but do not stay on for more than 10 seconds, I would clean the flame sensor. The flame sensor is a metal rod that is on the opposite side of the Igniter, sometimes it gets coated by oxidation and does not sense the burner flame and shuts the Furnace down. To clean to kill power to tje furnace, remove flame sensor and clean with a steel wool, then reinstall and start Furnce back up. If this does not work then most likely the Igniter is too weak to ignite the gas and will have ro be replaced.

Oct 29, 2012 | Heating & Cooling

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I have a 11 year-old york diamond 80 furnace. The flame sensor lights up and ignite the flame for about 5-6 seconds. Soon the flame goes out once again. There's this clicking sound that is heard every


You need to clean the sensor with steel wool so its very clean check sensor connections . If it is still not working you could change sensor also check out the pressure switch .

Jun 20, 2017 | Heating & Cooling

1 Answer

Thermostat calls for heat, purge motor turns on, 15 seconds later hot igniter turns on, then gas turns on and burners are lit. Problem is, they only stay lit for 5 seconds then shut off and cycle repeats...


,Hello, Make sure the flame sensor is clean near the burners, The flame sensor is a metal rod that is on the opposite side of the ignitor. To clean the flame sensor you will need some steel wool, turn off power to the furnace and remove the flame sensor and clean it with the steel wool. After cleaning reinstall it and turn power back on to furnace.

Mar 02, 2011 | Goodman Heating & Cooling

2 Answers

Furnace goes on red light stays on exhaust fan for heat chamber goes on gas igniter comes on but soon as gas comes on furnace kicks off have to shut off power for furnace for it to reycyckle but same...


Check your filter to make sure it is not plugged. If it is plugged - replace with filter recommended for your furnace. Every manufacture recommends you have your furnace checked and cleaned on an anual basis to keep itrunning safely and at it's top efficiency. If the filter is plugged or the blower wheel plugged, the furnace will shut itself off. Make sure all registers are uncovered - suppply and return registers.

Jan 03, 2011 | Heating & Cooling

1 Answer

My goodman furnace keeps lighting for about 10 seconds than goes out lots of clicking sounds


Problem: Your furnace will not ignite the gas to produce heat for your home. When a furnace has a bad igniter what I see most of the time is the following sequence of operation:


1. Thermostat calls for heat.
2. Draft inducer motor starts.
3. Pressure switch attached by a small plastic or rubber tube senses the negative pressure produced by the draft inducer and closes.
4. Draft inducer runs for 30 seconds to a minute before you hear a gas hissing sound. The ignitor did not glow, the flame sensor (a small metal probe about 1/8" in diameter, with a white porcelain base) does not sense the flame, so after 8 to 10 seconds the hissing sounds stops with no ignition of gas to heat your home. Your furnace shuts down and goes into a lock out condition until you turn your power switch back off and on again. Then the sequence starts all over again with no ignition of the gas.
Solution: You probably need to purchase and install a new igniter. I would suggest that you inspect your igniter closely for cracks. Make sure you do not touch the igniter with your bare hands. If you do not visually see a crack, then you could have a furnace control board problem or a limit, roll-out switch problem. The furnace's control board might not be supplying the voltage to the ignitor. If your furnace lights and the gas stays on for 8 to 10 seconds, then shuts right back off, then you need to clean your flame sensor with light sand paper or steel wool. You might need a new flame sensor, but most of the time they can be cleaned an will work well after cleaning.

NATE, NCCER, PHCC,HVAC Certified Instructor

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sounds like you have bad flame sensor or the sensor is in a bad postition. To get eliminate the lockout turn the power off to the unit and back on again. Look at the circuit board light and see what the troubleshooting code is.

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1 Answer

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If the burners do not fully ignite, the sensor will shut the furnace down. The lack of sufficient burner flame is a gas valve or gas pressure problem within the valve.
Replacing the gas valve with the original one may get you going. I surely suggest a professional service company for safety reasons and a thorough inspection. A 20 year old furnace is past it's normal life span.

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