Randy Bennell rbenn...@bennell.ca writes:
Was this board more than one layer of circuitry like computer motherboards?
If not, it was likely fixable in some manner.
With a dime-sized hole burned through it, doubtful.
--
1983 300D
1979 300SD
___
Allan Streib wrote:
With a dime-sized hole burned through it, doubtful.
If you knew where the missing traces went (doubtful without a schematic, it may
have been possible to jumper them in with wires.
___
http://www.okiebenz.com
For new and used parts
That Goodman furnace Mitch linked a week or two ago was not much more
than what the repair cost on this Bryant. Next time I'm going to have
to think about just replacing. It's sad in a way when a major appliance
like a furnace is almost a disposable item.
On Fri, Feb 17, 2012, at 01:09 AM,
You might want to call around to some other repair people, they often
have boards they have pulled from old units that are still functional,
as when someone upgrades or whatever. Any foreclosure houses in your
neighborhood?
--R
On 2/17/12 10:27 AM, Allan Streib wrote:
That Goodman furnace
Sadly this was a rather specialty board, a dual speed, dual output board
for the high-end furnace that my parents were talked into buying when
they replaced their original, but still working 30 year old furnace back
in 2006 or so.
My HVAC guy said there are some aftermarket generic controllers
82 300SD.
Scott
-Original Message-
From: mercedes-boun...@okiebenz.com [mailto:mercedes-boun...@okiebenz.com]
On Behalf Of Allan Streib
Sent: Friday, February 17, 2012 12:19 PM
To: Mercedes Discussion List
Subject: Re: [MBZ] OT: more furnace talk
Sadly this was a rather specialty board
On 17/02/2012 11:18 AM, Allan Streib wrote:
Sadly this was a rather specialty board, a dual speed, dual output board
for the high-end furnace that my parents were talked into buying when
they replaced their original, but still working 30 year old furnace back
in 2006 or so.
My HVAC guy said
On 17/02/2012 12:43 PM, Scott Ritchey wrote:
Gee! In the old 80% efficiency days you had one overtemp sensor (that
turned off the flame) and one hot sensor (that turned on the fan) and a
thermostat (that turned on the solenoid for the flame), plus a couple relays
and a transformer. My, how far
Allan Streib wrote:
That Goodman furnace Mitch linked a week or two ago was not much more
than what the repair cost on this Bryant. Next time I'm going to have
to think about just replacing. It's sad in a way when a major appliance
like a furnace is almost a disposable item.
Speaking of
]
On Behalf Of Randy Bennell
Sent: Friday, February 17, 2012 2:24 PM
To: Mercedes Discussion List
Subject: Re: [MBZ] OT: more furnace talk
On 17/02/2012 12:43 PM, Scott Ritchey wrote:
Gee! In the old 80% efficiency days you had one overtemp sensor (that
turned off the flame) and one hot sensor
-
From: mercedes-boun...@okiebenz.com [mailto:mercedes-boun...@okiebenz.com]
On Behalf Of Randy Bennell
Sent: Friday, February 17, 2012 2:24 PM
To: Mercedes Discussion List
Subject: Re: [MBZ] OT: more furnace talk
On 17/02/2012 12:43 PM, Scott Ritchey wrote:
Gee! In the old 80% efficiency days you
[mailto:mercedes-boun...@okiebenz.com]
On Behalf Of Randy Bennell
Sent: Friday, February 17, 2012 2:24 PM
To: Mercedes Discussion List
Subject: Re: [MBZ] OT: more furnace talk
On 17/02/2012 12:43 PM, Scott Ritchey wrote:
Gee! In the old 80% efficiency days you had one overtemp sensor (that
turned off
Final verdict... board melted beyond repair. Basically burned through
at the relay. Motors are fine, so the relay must have gone south.
The damage: new board, $387 + tax, plus diagnostic and installation
labor... $600 total. Ouch, who says fancy high-efficiency furnaces save
you money???
The relay failure would imply that the induction motor is bad or drawing too
much current.
They can be prone to locking up or dragging, which would draw an excessive
amount of current, as they often use cheap sleeve bearings that dry out.
I had one fail in my last house, but it did so slowly.
problem was then visible: a burned-out relay on the board. It had
apparently gotten quite hot, as the plastic case of the relay was
deformed and the board was black around where it was attached.
Sounds pretty bad.
So we're going to need a new controller board
Not necessarily. Is the board
Those HVAC control boards are somewhat beyond me, but I can share this
-- my heat pump fan burned out, at some point a large start capacitor
burned out (a silver can about the size of a small bar of soap, cig
pack, deck of cards, etc.) and that caused some other problems. That
capacitor
I had my regular furnace guy out there today (an indy, works out of his
truck, one-man operation).
He had a few different carrier/bryant boards in his inventory but not
the proper one for that furnace. He checked the motors and they appear
to be fine. Hot-wired the inducer motor so that the
Parent's Bryant (Carrier) gas furnace dead tonight. I took a look at
it, and found that the controller was flashing a code 32, which
tranlates to low induction pressure.
The induction fan was not coming on at all, so the error code made sense
from that standpoint. But why is the fan not coming
If you have an ammeter, put power to the blower and see if it's pulling
a high amount of current. If the blower is normal, possibly a power
surge (or brownout?) took out the controller, or the board just went bad.
Luther KB5QHUForest Park, IL
'87 300SDL (322,xxx mi)
'91 Dodge Ram 150
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