If you were Registered and logged in, you could reply and use other advanced thread options
|
Posted by on January 27, 2008, 7:44 pm
Hey, I've got a Goodman GMT115 gas furnace that, if turned on, will
not stop heating the house. This started two nights ago, and it may be
a fault in the fan/blower relay switch or something. I've tried
turning off the thermostat, but the only way to regulate it now is to
turn off power to the furnace. The manufacturer website doesn't give
any help. Matching up the manual's wiring diagram with the furnace
control panel and wiring doesn't quite mesh. Any help in diagnosing
the problem, or identifying where the fan/blower relay is?
|
 
| |
Posted by Dr. Hardcrab on January 27, 2008, 8:56 pm
> Hey, I've got a Goodman GMT115 gas furnace
I'm sorry.....
|
|
Posted by Smarty on January 27, 2008, 9:02 pm
Somewhere on the furnace you should find a terminal strip where the wires
from your thermostat connect. Temporarily disconnect the red wire and see if
the furnace then shuts. The burner, if ignited, should quit immediately, and
the blower may take a while to turn off since it is most likely on a delayed
relay / switch. The key thing is to isolate the problem to either the
thermostat versus the furnace, which this simple test will achieve.
If the thermostat is stuck in the continuous on condition, then removing the
red wire will reveal that the thermostat and not the furnace is at fault.
If, on the other hand, the furnace continues to run despite the red wire
being disconnected, then the furnace itself is the problem.
There should be a wiring diagram someplace inside the furnace or in the
owner's manual if you want to try to troubleshoot the furnace with our help.
If not, call a competent repair person.
Smarty
>
>
>
>> Hey, I've got a Goodman GMT115 gas furnace
>
>
> I'm sorry.....
|
|
Posted by Speedy Jim on January 27, 2008, 9:05 pm
thalij@gmail.com wrote:
> Hey, I've got a Goodman GMT115 gas furnace that, if turned on, will
> not stop heating the house. This started two nights ago, and it may be
> a fault in the fan/blower relay switch or something. I've tried
> turning off the thermostat, but the only way to regulate it now is to
> turn off power to the furnace. The manufacturer website doesn't give
> any help. Matching up the manual's wiring diagram with the furnace
> control panel and wiring doesn't quite mesh. Any help in diagnosing
> the problem, or identifying where the fan/blower relay is?
If it continues to heat the house (burners on)
after the thermostat is satisfied,
then it's not a fan/blower relay problem.
If you're confident working on the wiring,
disconnect the thermostat wires (Red and White)
at the furnace. If the gas burners now shut off,
the thermostat is at fault or the wiring to the
stat is shorted. (Shut the power off before working...)
If you're not confident or lack the experience,
wait for the tech.
|
|
Posted by Stormin Mormon on January 28, 2008, 5:37 pm
Sounds electrical. I had a furnace I worked on, years ago. They'd replaced
the stat three times before I learned of the trouble. Problem turned out to
be a sticky relay in the control box.
--
Christopher A. Young
Learn more about Jesus
www.lds.org
.
Hey, I've got a Goodman GMT115 gas furnace that, if turned on, will
not stop heating the house. This started two nights ago, and it may be
a fault in the fan/blower relay switch or something. I've tried
turning off the thermostat, but the only way to regulate it now is to
turn off power to the furnace. The manufacturer website doesn't give
any help. Matching up the manual's wiring diagram with the furnace
control panel and wiring doesn't quite mesh. Any help in diagnosing
the problem, or identifying where the fan/blower relay is?
|
Page 1 of 3 1 2 3 > last >>
| Similar Threads | Posted | | furnace goodman | October 28, 2006, 1:38 pm |
| Goodman or Rheem gas furnace? | October 5, 2005, 1:50 am |
| Goodman Furnace humming and not heating | February 16, 2006, 8:13 pm |
| Goodman Furnace Gas Valve Not Opening | February 20, 2007, 4:18 pm |
| Goodman GMP075-3 Furnace - Performance Question | February 3, 2007, 7:52 pm |
| Kentucky Goodman Heat Pump/Gas Furnace install | October 3, 2005, 11:03 am |
| Kentucky Goodman Heat Pump/Gas Furnace install | October 3, 2005, 11:03 am |
| Goodman GMV95 furnace + install - price quote | December 30, 2006, 12:52 pm |
| Furnace shut down | December 16, 2005, 8:05 am |
| Strange noise coming from furnace after AC has shut off. Normal? | June 21, 2006, 2:03 pm |
|
|
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML Sitemap