Jump to content



Learn appliance repair at the Samurai Tech Academy.  Learn more.  Earn more.


Parts Search
Site Search

FAQs | Store | Memberships | Repair Videos | Academy | Newsletter | Beer Fund | Contact


Welcome to Appliantology.org, the Web's Premiere Appliance Repair Resource!

The world-famous Samurai Appliance Repair Forums


To get started, click here.


Already a member of the Appliantology Academy? Just sign in with your username and password in the upper right-hand corner of the screen.

 


Photo

Amana GUC090B35B Furnance flue problems

amana furnace flue wind guc pressure switch draft blower vacuum signal

  • Please log in to reply
5 replies to this topic

#1 michla

michla

    Samanera

  • Grasshoppah
  • Pip
  • 8 posts

Posted 21 November 2012 - 01:03 AM

Hi all, been awhile since I've been on here but I've got one for the experts on "furnace-tology".

Strong, gusty 45mph winds typical for Fall here have been messing with my induced draft blower vacuum signal to the pressure switch, especially the cyclonic nature of said winds this year.

Shuts the furnace down prematurely when alternating positive/negative pressure waves in the flue mess with the blower vacuum signal from gusts blasting across the furnace exhaust flue outlet above the roofline. Flue terminates approximately 22 feet above the ground, through the garage roof, along the split level exterior wall, through the adjacent eave of the attached main house terminating about 3 feet above the roofline. PVC 2.5 inch diameter.

Result: the pressure switch diaphram plunger taps the microswitch toggle just slightly enough to open the circuit making the furnace controller think the draft blower has failed--result, premature flame shutdown and begin another inefficient heating cycle. The flue top has a convex rain cap of course.

Draft blower is new last winter. Pressure switch vacuum tests prove ok for possible torn diaphram. Pressure microswitch continuity tests check ok at microswitch. I relocated the pressure switch closer to the draft blower with a much shorter hose a week ago when the wind was blowing thinking that would help with a stronger vacuum signal but particularly bad winds this weekend proved that futile.

Tonight it’s calm here for the first time in 4 days and the furnace is completing heating cycles normally. I’m now wondering what I can do to keep gusts from creating pressure waves down the flue or wind-capping the flue.

Does anybody know of a flue-cap product for just such a condition? Is there a flue cap made specifically for wind problems like this?

Edited by michla, 22 November 2012 - 11:55 PM.


Use the Appliantology Parts Search Box to Find What You Need!
Enter your model number, part number, type of appliance, brand, or even a part description.
365-day return policy on all parts purchased here, even electrical parts that have been installed!

#2 Bullstok

Bullstok

    Yamabushi

  • Appliantologist
  • PipPip
  • 90 posts
  • Flavorite Brew:Mt. Dew

Posted 21 November 2012 - 08:00 AM

post picture of flue termination if possible. closer up and farther away.


#3 michla

michla

    Samanera

  • Grasshoppah
  • Pip
  • 8 posts

Posted 21 November 2012 - 10:37 AM

I'd like to, but I don't have a premium subscription here to upload photos

#4 kdog

kdog

    RoughShod

  • Appliantology Fellow
  • PipPipPipPipPip
  • 7,465 posts
  • Location: Canada
  • Flavorite Brew:Dickens Cider

Posted 21 November 2012 - 05:13 PM


Help us keep the lights on: buy appliance parts here ==> http://repairclinic.com

For service manuals and lots of other goodies, become an Apprentice ==> Apprenticeship

#5 RegUS_PatOff

RegUS_PatOff

    Sensei

  • Academy Instructor
  • PipPipPipPipPip
  • 33,588 posts
  • Location: USA
  • Flavorite Brew:Chief NTSC Black & White

Posted 21 November 2012 - 06:26 PM

I'd like to, but I don't have a premium subscription here to upload photos

upload to some photo / hosting / sharing site, then post the links here ...
.

one of my video productions: “Easter Seals: Walk With Me”

every day is Down Syndrome Awareness Day
"A Child Is Waiting" . Burt Lancaster . Judy Garland . 1962

RegUS_PatOff > www.youtube.com/watch?v=oPAY2LsKVEw

#6 michla

michla

    Samanera

  • Grasshoppah
  • Pip
  • 8 posts

Posted 22 November 2012 - 10:45 AM

I've got it--answered my own post !
I didnt even know a "directional wind cap" exists till someone told me yesterday---pivots a shield around like a weathervane with the wind. That's it, Im on it.
Thanks guys.





Also tagged with one or more of these keywords: amana, furnace, flue, wind, guc, pressure switch, draft blower, vacuum signal

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users


FAQs | Store | Memberships | Repair Videos | Academy | Newsletter | Beer Fund | Contact


Use the Appliantology Parts Finder to Get What You Need!
Enter a model number, part number, type of appliance, brand, or even a part description.
365-day return policy on all parts purchased here, even electrical parts that have been installed!

Your Sometimes-Lucid Host:
Samurai Appliance Repair Man
"If I can't help you fix your appliance and make you 100% satisfied, I will come to your home and slice open my belly,
spilling my steaming entrails onto your floor."


The Appliance Guru | Master Samurai Tech

Real Time Analytics