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Old 04-06-2009, 09:48 PM   #16
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First time furnace repair. Any advice?


If you have a V M you could check for 110 v at the red terminal on the board on a call for heat..Red from V M to red wire terminal.. black lead from V M to ground or white.. If you have 110 v the fan should run
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Old 04-06-2009, 10:16 PM   #17
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First time furnace repair. Any advice?


Quote:
Originally Posted by hychesee View Post
that's hilarious, thanks - grins back at ya
Contact the mfg of any HVAC brand. They'll confirm what I told you.

Controls are not rebuilt for a darn good reason. When a new furnace model is safety certified it is with the components that the mfg hast designed in to it.

Any field alterations would be considered a deviation (that means repairing a board or any other part of the safety or ignition system) from the original design and puts the liability squarely on the shoulder of the offending individual.

There was a guy around here who was repairing Bryant blower boards some years ago for local wholesaler. UTS shut 'em down hard. And rightfully so.

The solid state components were generic and not the same quality the OEM put into to the board. There were a few cases of gas valves not closing on the end of a cycle.
I ran those calls and they were the repaired boards I mentioned.
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Last edited by hvaclover; 04-06-2009 at 10:18 PM.
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Old 04-07-2009, 06:52 AM   #18
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Originally Posted by hvaclover View Post
Contact the mfg of any HVAC brand. They'll confirm what I told you.

Controls are not rebuilt for a darn good reason. When a new furnace model is safety certified it is with the components that the mfg hast designed in to it.

Any field alterations would be considered a deviation (that means repairing a board or any other part of the safety or ignition system) from the original design and puts the liability squarely on the shoulder of the offending individual.

There was a guy around here who was repairing Bryant blower boards some years ago for local wholesaler. UTS shut 'em down hard. And rightfully so.

The solid state components were generic and not the same quality the OEM put into to the board. There were a few cases of gas valves not closing on the end of a cycle.
I ran those calls and they were the repaired boards I mentioned.



I agree... Wouldn't buy parts off E-Bay either
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Old 04-07-2009, 07:53 AM   #19
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First time furnace repair. Any advice?


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I agree... Wouldn't buy parts off E-Bay either
Glad we agree. Ebay is not the place to buy a part. Whose gonna back up the warranty?
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Old 04-07-2009, 09:25 AM   #20
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First time furnace repair. Any advice?


The other issue no one seems to understand or care about is that a circuit board is a critical safety device. If you mess it up and the flame sensor/flame failure part of it quits you can fill up the furnace/house with gas and voila, first person to turn on a light switch blows up the house. Nothing against some DIY repairs but fixing circuit boards is verboten.
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Old 04-11-2009, 06:01 PM   #21
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First time furnace repair. Any advice?


Update, got the new control board, it was a breeze to replace. Turned the system on and the fan started just fine. Now, another problem is with the burner, the gas burner turns on for a few seconds and then shuts off. Is this a symptom of a bad pressure switch?
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Old 04-11-2009, 06:03 PM   #22
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First time furnace repair. Any advice?


sounds like flame sensor.. Clean it or make sure it has good connection on the new board
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Old 04-11-2009, 06:31 PM   #23
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First time furnace repair. Any advice?


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sounds like flame sensor.. Clean it or make sure it has good connection on the new board
can you tell me where is it located?
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Old 04-11-2009, 06:35 PM   #24
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First time furnace repair. Any advice?


it will be a steel rod that the burner flame burns against as the flame shoots into the chamber.. It's around the burner
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Old 04-11-2009, 06:38 PM   #25
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First time furnace repair. Any advice?


Right here
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Old 04-11-2009, 06:47 PM   #26
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First time furnace repair. Any advice?


Got it! Thanks! Cleaning it now
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Old 04-11-2009, 06:55 PM   #27
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First time furnace repair. Any advice?


Cleaned with sand paper... still no go... system cycles on/off. Anything else?
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Old 04-11-2009, 07:02 PM   #28
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First time furnace repair. Any advice?


btw, check out the back of my old control board

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Old 04-11-2009, 07:19 PM   #29
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First time furnace repair. Any advice?


cleaned it a little more... no change

should i order a pressure switch now?
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Old 04-11-2009, 07:29 PM   #30
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First time furnace repair. Any advice?


I checked the code with 5 blinks... "Flame sensed when no flame should be present" Maybe that will give some ideas?
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