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Old 09-05-2016, 10:17 AM   #1
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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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Old 09-05-2016, 11:41 AM   #2
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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?
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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Old 09-05-2016, 12:08 PM   #3
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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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Old 09-05-2016, 12:47 PM   #4
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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.
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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Old 09-05-2016, 12:52 PM   #5
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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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Old 09-05-2016, 01:32 PM   #6
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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.


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Old 09-05-2016, 01:58 PM   #7
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I realize this isn't very funny to the OP...(I've got this vision of a husband being sent repeatedly out to the garage to "fix" something, while the wife persistently prods him to take another hack at it)..... but there's got to be a humorous anecdote for this thread about women who ask for directions... and men who won't.

My wife once said to me, "George, do you realize that every time I pose a question of you your first response is to always say 'No!'...??"

Without a moment's hesitation I immediately replied, "No it isn't!...."

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Old 09-05-2016, 02:17 PM   #8
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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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Old 09-05-2016, 03:23 PM   #9
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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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Old 09-05-2016, 03:25 PM   #10
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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.
The board is a Dinosaur and I have it bookmarked in case we need to order one.
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Old 09-05-2016, 03:48 PM   #11
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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.


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You are right, I went out and there is only one logical way to plug.
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Old 09-05-2016, 04:33 PM   #12
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Ordering

Ordering the circuit board.....
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Old 09-05-2016, 07:56 PM   #13
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Verify the sail switch, if it has one, is also working properly.


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Old 09-05-2016, 08:10 PM   #14
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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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