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ApplianceGuru.com: The Samurai Appliance Repair Forums > Do-It-Yourself Appliance Repair Help > Heating, Ventilation, and Air Conditioning (HVAC) > Amana 80 SSE air command gas furnace |
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| Moderated by: RegUS_PatOff, hvacdrd, applianceman18007260692 |
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| Amana 80 SSE air command gas furnace | Rate Topic |
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| Posted: Sun Mar 29th, 2009 07:39 pm |
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1st Post |
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applianceman18007260692 Sublime Master of Appliantology 
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Control board gives 3 blinks. Service manual says draft inducer blows constantly and pressure switch stuck open. One problem, the draft inducer motor does not run. It has continuity and turns freely. All the rollouts and the plenum limit is good. The fuse in the board checks good. Model GUICO70FA30 It is my 81 year old mother's furnace. It is 3 years old and barely out of warranty. What have I missed guys? It it the control board?
____________________ "May the hinges of our friendship never grow rusty" Old Irish Saying |
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| Posted: Sun Mar 29th, 2009 09:07 pm |
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2nd Post |
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Cactus Bob Sublime Master of Appliantology 
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first did you check at the motor connector for 110v when you think the motor should be running ? do you hear a relay click on the board when you power it up ? did you remove the board and check for a bad or melted sloder connection ? you may have a bad relay on the board , missing ground ( common) on the board or motor . if everthing checks out you need a board , it does not happen that offten but it happens . no magic bullet here
____________________ SORRY ABOUT THE SPELLING , I FIX GREAT , I DON'T SPELL WELL |
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| Posted: Sun Mar 29th, 2009 09:30 pm |
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3rd Post |
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applianceman18007260692 Sublime Master of Appliantology
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Thanks cactus.The relay clicks when you turn the heater on but the DI never fires up which is what you hear when the sytem fires up. We had a bad storm system go through here friday night. Lightning struck the transformer down the street that affects the 4 houses down from mom's. Power went out the instant it hit. But the heater was not on at the time and we had no other things goes out. And she has had intermittant problems with it since mid march.
____________________ "May the hinges of our friendship never grow rusty" Old Irish Saying |
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| Posted: Sun Mar 29th, 2009 09:50 pm |
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4th Post |
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Cactus Bob Sublime Master of Appliantology
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sounds like a bad solder connection to me . if not its the relay contacts . unless your like me and "recycle" good relays from every old board you can . you will need a board
____________________ SORRY ABOUT THE SPELLING , I FIX GREAT , I DON'T SPELL WELL |
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| Posted: Mon Mar 30th, 2009 09:52 am |
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5th Post |
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Budget Appliance Repair Fellow, Academy of Sublime Masters of Appliantology
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Why don't you hook a test cord up to just the draft inducer motor to make sure it is good and rule it out as a problem. Even if the heater wasn't on when the pole transformer got hit it could still have taken something out on the board. Usually it's the 24volt transformer and/or varistor but if you get the flashing trouble light I would think the 24volt transformer should be still ok.
____________________ William Burk (Willie) Willie's Budget Appliance Repair Eureka, CA 95501 |
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| Posted: Tue Mar 31st, 2009 12:26 am |
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6th Post |
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applianceman18007260692 Sublime Master of Appliantology
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No power to the DI. Board ordered.I will let yall know.
____________________ "May the hinges of our friendship never grow rusty" Old Irish Saying |
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| Posted: Fri Apr 3rd, 2009 11:36 pm |
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7th Post |
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applianceman18007260692 Sublime Master of Appliantology
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Board replaced. Heater working. Mom's happy.
____________________ "May the hinges of our friendship never grow rusty" Old Irish Saying |
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