Goodman Stack Over Temp Switch

Posted by Bob_Loblaw on January 9, 2007, 12:31 am

4ax.com:

> "Bob_Loblaw" wrote:
>
>
>

>>I have never heard of a "stack over
>>temp switch", but then again, I'm new at this...20 years....

>
>
> well damn son, that explains a lot !! :-)

40 years if you count the overtime! :-)

--
Respectfully, Bob

Posted by Bubba on January 8, 2007, 11:10 pm

wrote:

>My Goodman GMPN080 furnace has been acting strangely for several years now.
>After a concerted effort, I have determined that the stack over temp switch
>is opening at 140 degrees F, and not closing until it gets down to about
>110 degrees F. This causes the gas valve to shut off. The controller
>tries three times to relight it, then shuts everything off for an hour,
>with a single LED flash code on the controller card.
>My question is: is this switch malfunctioning, or is 140F an unusually high
>temperature?
>Thanks,
>pf

If your Goodman is acting strangely, tell it to stop.
Who all was involved in this "concerted" effort?
I checked the parts break down sheet of the GMPN080. No "stack over
temp switch" is listed. Maybe you are really just looking at your
fridge?
If the gas valve is shutting off, tell it to stop that.
Id change the thermostat and wiring. That should take care of it.
Bubba

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Goodman Stack Over Temp Switch - Page 2