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I have a goodman furnace gmp075-3, igniter problem, i replace and over night it goes bad, as like a fuse blowing, am i getting to much voltage,and if it is, what regulates or could be the problem, thank you in advance, DALE

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  • 148 Answers

The igniter should rating no more than 5amps. If you check the max ampre while it on reading too much then you have problem with voltage from the board

Posted on Feb 14, 2014

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Posted on Jan 02, 2017

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WebTeligent
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SOURCE: No heat, trouble shooting light has continious flash.

There is a vacuum sensor on most units tied from the exhaust gas fan to the sensor. Does the unit try to start? If the unit's exhaust fails to pull the switch it will turn off after about 30-45 sec after starting. "IT" thinks it's not exhausting and stops to keep from overheating. Do you have this exhaust fan and rubber hose to sensor? Can you see if that fan is turning on start?

Posted on Nov 10, 2007

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SOURCE: Goodman furnace burner ignites then shuts off in about 10 seconds

if you have replaced the flame sensor and it will not stay lit, the draft safety switch may be opening. It works on positive and negative pressure created by the inducer fan motor.You may have a restriction in your heat exchanger or if is a high efficiency furnace, it may not have the drain tube installed properly with a trap. The trap works just like the trap under your sink and if water isnt in the trap, the pressures can be effected enough to open the draft switch(some call it an air pressure switch)

Posted on Jan 07, 2010

atocrxr
  • 135 Answers

SOURCE: My goodman furnace will start to ignite, then it

Another part that you might want to check is the flame sensor. It is a very good chance that this is the problem, the stat calls for heat, the induced draft motor (little motor on from of furnace), ignitor comes on, the main burner fires, just for a second or two, the burner shuts down, the main blower motor defaults to blower on!
If this is the issue;
Then this is what you do to fix it, kill power to the furnace, look where the burners are, to the left side there is a little wire, usually yellow or orange running to what kinda looks like a spark plug, one screw should be holding it to the burner bracket. take it out, at the end of the white porcelain is a small metal rod sticking out, it probably has a slight bend in it.
take some steel wool, or sand paper and clean the rod till is is nice and shiny, NOTE: when you take it out, it won't look really dirty, maybe just like a pencil lead,,,,it is dirty!
Just use the sandpaper and clean the rod till it looks like metal, "do not sand the white porcilen". Put the part back in and turn the power back on and run the furnace as usual.
90 % chance that this will fix your problem.
The rod get a build-up on it from the sulfur that is added to the gas, and has a hard time passing the milli-volt signal back to the furnace computer, which is passed from the ignitor, through the flame, to the sensor! This way the computer knows that all of the burners are firing and it is safe to run!
Please take time to come back and rate me, or contact me with any further questions!
Have a warm day :)
Sincerely,
Paul Gibson

NOTE!!
Do not touch the ignitor! The part that gets bright and hot! Even when it is cold, the oil on your fingers will cause it to burn out.

Posted on May 03, 2010

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