I've been having difficulty with a furnace. Unfortunately I'm not at
home and can't remember the specifics(manufacturer, serial #,etc.).
It's a late model gas furnace. The problem is that the thermostat will
be set to heat. The furnace will turn on, the pilot will light up,
I'll here a clicking sound and then thhe burners won't fire up. The
problem is intermittent, so when its working, the burners will light up
after the clicking sound. I've replaced the thermostat and the main
circuit board, and the problem still exists. Any thoughts on what
could be causing this? Please help.
On 19 Dec 2005 11:02:32 -0800, email@example.com wrote:
Id try the gas valve next.
If that doesnt work, try the fan & limit switch.
Next install a new transformer.
Then get a new flame sensor.
After that, install new burners.
Then try a new blower motor.
After that you should only have a few more parts and you will be set.
Edwin, Thanks for the response. I have more info now. My furnace is
a Goodman GMT 070-3. The igniter is lighting up, and I hear a clicking
sound, but the burners just won't trigger. Is it a possibility that
there is some type of safety mechanism that's been triggered that I
just need to shut off? As an aside, my "handyman" replaced the igniter
with a universal glo-stix igniter when I first started having this
problem. I'm at a loss.
Ive got a serious question for you..
WHY do people ALWAYS replace the thermostat, when 99% of the time its NEVER
That goodman furnace has 7 safety switches on it that could be tripped, (if
the right diagram was put in this damn book) and no one here can tell you
what, if any, are tripped.
Now you are finding out why Goodman, is good to repair folks...
Also as a suggestion, dont get a handyman to fix items like your gas fired
furnace. IF a safety is tripped, it tripped for a reason, and a tech knows
to look and what to inspect if this is the case, while a handyman is handy
to press buttons.
Thats almost like asking your general practicer to perform open heart.
Easy. The only thing they KNOW is the thermostat (that's not a put-down.
It's reality). They see that it is 60 degrees in the house and they put it
on 70. The thermometer doesn't move so it HAS to be broken/bad. Then they
think "I can change wires!" I like the ones that come back and say "Now
NOTHING works! Not even the fan".
Where can I buy a transformer???
On 20 Dec 2005 05:23:36 -0800, firstname.lastname@example.org wrote:
First off, is the pilot lighting? If not, nothing else is going to
fire. If you confirm the pilot is lighting, I agree with others that
the gas valve is bad. However, are there any other safety devices in
the wiring circuit? Can you get a schematic? Maybe the manufacturer
can email of fax you one. At least that way you can determine if
there are any safety devices, and if there are, put a meter on each
If however, you are not getting the pilot to light, and ARE getting
the needed spark, you either have a bad thermocouple, or gas is not
getting to the pilot head. To determine if gas is getting to the
pilot head, use a match, lighter or small torch.
One last tip. If the pilot is working fine, and you found all safety
devices (if they exist) to be working. Give the gas valve rap with a
block of wood when it's trying to ignite. They can stick. (of course
dont hit hard enough to break it off). If that gets it going, replace
the gas valve. That rap might get it working then, but it wont stay
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