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Ignitor keeps sparking

I have a Model # S25 SunPak heater and calls for heat it sparks and lites burner but ignitor keeps sparking and then goes into lockout mode.
Would that be the ignitor or the box

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Ignitor works , so it's not broken. It's probably a flame sensor. It may be broken or what happens frequently , it moved out of place. Other cause might be a low gas pressure. Even if it starts, the flame dies soon and after few repeats it goes into lockout. I do not beleive your 'box' is broken either

Posted on Jan 20, 2009

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1 Answer

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If the pressure switch fails to close is this because of a bad switch or inducer fan motor? goodman model gmp100-4


Do not assume that the pressure switch is bad nor the vent motor. The first thing to check is the vacuum hose from the pressure switch to the vent motor. Sometimes they get moisture in them and sometimes they get clogged in the start tube on the vent motor. Take a small needle or paper clip and clean out the start tube on the vent motor. Check the hose for dry rotting or leaks. Cut the ends back about an 1/2" if you have enough hose extra and then re-connect. Next step is to check your flue pipe for a restriction like a birds nest or a wasp nest in the outside termination point. Then to eliminate the vent motor from the equation, take the vacuum hose off the vent motor start tube and with the furnace calling for heat , **** on the hose to keep a constant vacuum on the pressure switch. Watch the ignitor glow or spark ingition start to spark. make sure it lights the burner runners and all burners are lite. usually the ignitor is on the first burner and then there is a flame sensor on the last burner. If the flame does not ignite to the last burner the flame senor will kick tell the control board to turn off the gas valve and shut down. If this happens pull the flame senor out with a 5/16" nut drive and clean lightly with sand paper and re-install it. Start the process over and you should have sucessfully fixed your furnace. If the constant vacuum does not bring on the ingnitor replace the pressure switch.

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I have a goodman central heating . My problem is the electric ignitor will light the burner after a brift time the burner goes out. This problem will go on the entire time of the heating cycle. I have...


Hi!
First of all does this unit uses a hot surface ignitor or a spark ignitor? A hot surface ignitor is a resistive element that will get hot enough(glows yellow to near white) that ignites the main burners directly and a spark ignitor will light a pilot light first then that pilot light will ignite the main burners.
If your system uses the hot surface ignitor then there will be a flame sensor on the last burner that lights. This is a thin silver metal probe that is actually in the burner flame when that burner is lit. It is held in place normally by a 1/4 inch screw. It will have 1 wire attached to the end by a female spade connector. You can pull this wire off before you remove the flame sensor to clean it. Use a fine emery cloth to lightly sand off any residue on it. Also you will need to clean the end of that burner that the flame sensor serves as this is normally the grounding field. This is most likely the problem with your system if it is a hot surface ignition type.
If your system is the spark type then the problem is similar. Normally the pilot light is toughing a small flame sensing probe that is next to the pilot light. This probe also has to be clean. One more thing to look at is to see if the pilot light is large enough to surround the flame sensor. If the pilot is weak it will not touch the flame sensor enough and the system will do what it is doing for you now. If the pilot is weak then the pilot orfice is restricted. This should only be looked at and repaired by a qualified service technician. I hope I pointed you in the right direction!! Good luck!!

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1 Answer

I just bought a house with a rheem furnace/ac (RGDE-10EQAGR). When trying to start, the inducer fan comes on. After a few seconds the gas comes on. It doesn't lite. I noticed the spark igniter is dangling...


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1 Answer

Funace gag goes on than off right away


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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 ignitor does not energize (bad control, bad ignitor), the gas valve does not open or there is no gas (bad gas valve, broken wire, no gas), the pilot does not lite (dirty pilot), the burner does not lite (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).

Most newer furnaces will have a diagnostic center or control built into the control module. You may be able to view it as it is running thru a small viewing port. Some models will require the removal of an access panel prior to finding it. On the reverse of the access panel, there will be a diagnostic chart that will aide you in understanding any error code recorded (usually a blinking light).

Oct 18, 2009 | Honeywell Electronic Programmable...

1 Answer

I have a Goodman air heat unit that will not come on.


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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 ignitor does not energize (bad control, bad ignitor), the gas valve does not open or there is no gas (bad gas valve, broken wire, no gas), the pilot does not lite (dirty pilot), the burner does not lite (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).

Most newer furnaces will have a diagnostic center or control built into the control module. You may be able to view it as it is running thru a small viewing port. Some models will require the removal of an access panel prior to finding it. On the reverse of the access panel, there will be a diagnostic chart that will aide you in understanding any error code recorded (usually a blinking light).

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2 Answers

Furance won't lite


The first thing i would do is turn thermostat down and turn power off wait for a few minutes then turn power back on and then thermostat back up. If it has a ignition module then there should be a blower motor. It should come on then a pressure switch that should click then the ignitor should glow or spark. there should be a round glass circle that you can look through to see the ignitor

Apr 04, 2008 | Goodman GMS90703BXA Heater

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