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09-05-2016, 10:17 AM
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#1
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3 Rivet Member 

1997 21' Excella
Carson City
, Nevada
Join Date: Jun 2009
Posts: 174
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Circuit board for furnace
I could not find any previous threads so while I'm searching..... we put in a new motor for our furnace but the heat doesn't kick in, it just blows cold air. I read on a thread that it could be the circuit board. Procrastinating husband just brought in the circuit board. I suggested making sure there is nothing on it and hook it back in firmly and see if the furnace heat kicks on. What are further guidances?
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09-05-2016, 11:41 AM
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#2
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Rivet Master 
1976 31' Sovereign
Oswego
, Illinois
Join Date: Jan 2007
Posts: 1,401
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Quote:
Originally Posted by BessieB
I could not find any previous threads so while I'm searching..... we put in a new motor for our furnace but the heat doesn't kick in, it just blows cold air. I read on a thread that it could be the circuit board. Procrastinating husband just brought in the circuit board. I suggested making sure there is nothing on it and hook it back in firmly and see if the furnace heat kicks on. What are further guidances?
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Igniter or gas not turned on or line plugged thermometer sounds like working as fan turns on. I had same prob. wouldn't ignite, was defective circuit board replaced no prob. since.
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09-05-2016, 12:08 PM
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#3
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3 Rivet Member 

1997 21' Excella
Carson City
, Nevada
Join Date: Jun 2009
Posts: 174
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So what trouble shooting did you do to see if circuit board was the problem? We have it out so don't know if that is the problem. But that is the direction I am thinking.
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09-05-2016, 12:47 PM
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#4
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Rivet Master 
1976 31' Sovereign
Oswego
, Illinois
Join Date: Jan 2007
Posts: 1,401
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Quote:
Originally Posted by BessieB
So what trouble shooting did you do to see if circuit board was the problem? We have it out so don't know if that is the problem. But that is the direction I am thinking.
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Sorry I did not diagnose prob. Was in Fla. in Dec. when happened AS dealer where we were, fixed w/out waiting.
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09-05-2016, 12:52 PM
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#5
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3 Rivet Member 

1997 21' Excella
Carson City
, Nevada
Join Date: Jun 2009
Posts: 174
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plugging into circuit board
So now my husband is wondering which way the plug goes into the circuit board. If one puts it in one way or the other will anything bad happen? He's wondering if he did that right. The plug has 3 wires. The circuit board on top says power and the bottom is ground. White wire and a yellow wire with a red in between. Any help and input is appreciated.
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09-05-2016, 01:32 PM
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#6
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Rivet Master 
Commercial Member
Vintage Kin Owner
Naples, FL
, Hood River, OR
Join Date: Dec 2005
Posts: 7,306
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Look inside the 'plug'. You will see contacts on one side. Those must connect with the metal 'contacts' on the igniter board.
There should also be a slot in the board and corresponding plastic channel in the plug. Match them up and you're done.
Lew Farber
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Lew Farber...ABYC Certified Master Marine Electrician...RVIA Certified Master Tech ...AM Solar Authorized Installation Center...AIRSTREAM Solar & Electrical Specialist...Micro Air 'Easy Start' Sales and Installations
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09-05-2016, 01:58 PM
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#7
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Rivet Master 

2008 22' Sport
Spicewood (W of Austin)
, Texas
Join Date: Mar 2015
Posts: 1,468
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2012 Ram 1500 Crew Cab 4.7L 4X4
Rambox
WBCCI 14676 TX ALAMO UNIT
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09-05-2016, 02:17 PM
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#8
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Site Team
, Minnesota
Join Date: Aug 2003
Posts: 7,074
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I have a Suburban furnace and have never had a problem with it. However, I recall hearing that Dinosaur Electronics makes good boards if you need to replace the ignitor board.
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09-05-2016, 03:23 PM
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#9
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3 Rivet Member 

1997 21' Excella
Carson City
, Nevada
Join Date: Jun 2009
Posts: 174
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Yes it is funny. I had to remind my husband as it is cooling off that we have to get that furnace working. But it would serve him right as he hits the hunting trail that he would have to freeze his hiney off since that was the main reason we bought the trailer, them cold frosty nights out in the boonies. I always have to do all the looking for info and such. But then again, I could just as well let him hitch up Tin Hut and head out with him forgetting that the furnace does not work.
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09-05-2016, 03:25 PM
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#10
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3 Rivet Member 

1997 21' Excella
Carson City
, Nevada
Join Date: Jun 2009
Posts: 174
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Quote:
Originally Posted by markdoane
I have a Suburban furnace and have never had a problem with it. However, I recall hearing that Dinosaur Electronics makes good boards if you need to replace the ignitor board.
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The board is a Dinosaur and I have it bookmarked in case we need to order one.
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09-05-2016, 03:48 PM
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#11
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3 Rivet Member 

1997 21' Excella
Carson City
, Nevada
Join Date: Jun 2009
Posts: 174
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Quote:
Originally Posted by lewster
Look inside the 'plug'. You will see contacts on one side. Those must connect with the metal 'contacts' on the igniter board.
There should also be a slot in the board and corresponding plastic channel in the plug. Match them up and you're done.
Lew Farber
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You are right, I went out and there is only one logical way to plug.
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09-05-2016, 04:33 PM
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#12
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3 Rivet Member 

1997 21' Excella
Carson City
, Nevada
Join Date: Jun 2009
Posts: 174
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Ordering
Ordering the circuit board.....
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09-05-2016, 07:56 PM
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#13
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Rivet Master 

2007 22' International CCD
Corona
, California
Join Date: Jul 2013
Posts: 4,113
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Verify the sail switch, if it has one, is also working properly.
Sent from my pocket Internet using Airstream Forums
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KE4GNK/AE
'The Silver HamShack' (2007 International 22FB CCD 75th Aniversary model)
Multiple Yaesu Ham Radios inside and many antennae sprouting from roof, ProPride hitch
2012 shortbed crewcab 4x4 Toyota Taco TV with more antennae on it
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09-05-2016, 08:10 PM
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#14
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4 Rivet Member 

1998 36' Land Yacht Widebody
Ft. Lauderdale
, Florida
Join Date: Jan 2016
Posts: 378
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My furnace was short cycling and would not stay lite first week I arrived in Montana last October. Not only was the board bad but the unit had never been used. PO only used electric heat in roof units. It was noisy at first but more it ran better it operated. Had no problems with it keeping galley and rear areas warm, but it would not heat up the front area very well. Had to run a small electric heater up there on cold nights...anything below 35 degrees.
Thank goodness do not need it in Florida this year!!
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