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-   -   goodman furnace won't stay fired (http://www.diychatroom.com/f17/goodman-furnace-wont-stay-fired-159086/)

rjwhelehan 10-05-2012 04:54 PM

goodman furnace won't stay fired
 
I have a goodman updraft furnace, model gmvc80704bx. Occasionally, when it ignites, it only stays ignited for a few seconds, from 2 seconds to 10. It will continue to fire with the same results, until it shuts down completely. Most of the time it fires normally. Any ideas?

beenthere 10-05-2012 05:06 PM

Next time it does it, look for the error code, and see what error it is.

rjwhelehan 10-05-2012 05:11 PM

goodman furnace won't stay fired
 
error code 88 with 2 red flashes. It only happens once then returns to "OP" with a green flashing light.

rjwhelehan 10-05-2012 05:17 PM

goodman furnace won't stay fired
 
ok now I'm getting an E2 message which indicates a low pressure switch stuck open

beenthere 10-05-2012 05:18 PM

Probably some moisture in the hose or switch. Could also be a build up of corrosion at the ports whee the hose attaches.

christoff 10-05-2012 05:19 PM

do you have a manual?
is there a trouble shooting section?

rjwhelehan 10-05-2012 05:26 PM

I just tapped on the low pressure switch and it fired normally. I'll try to clean the hoses and keep an eye on it.


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