Hello all! I have a Coleman Gas Furnace that is not working. For a
while the problem was intermittent, but now it completely quit. The
thermostat is working properly, sending the furnace the signal to
heat. The sensors and the igniter are working. The igniter glows and
is ready for the gas valve to open. You hear a click in the control
module and the gas valve does not turn on and the igniter shuts down.
We are torn between the control module and the gas valve being
defective. Any help would be very appreciated.

On Dec 4, 10:31*am, wrote:
Hello all! I have a Coleman Gas Furnace that is not working. For a
while the problem was intermittent, but now it completely quit. The
thermostat is working properly, sending the furnace the signal to
heat. The sensors and the igniter are working. The igniter glows and
is ready for the gas valve to open. You hear a click in the control
module and the gas valve does not turn on and the igniter shuts down.
We are torn between the control module and the gas valve being
defective. Any help would be very appreciated.

Put a VOM on the wires going to the gas valve. If it gets voltage
when it's supposed to open, then it's the valve. No voltage, then
it's something else, most likely the controller. I'd also measure
the voltage with the wires disconnected, because if the valve
solenoid is shorted you could read zero or low voltage due to
the short. Voltage is usually 24V.

wrote:
On Dec 4, 10:31 am, wrote:
Hello all! I have a Coleman Gas Furnace that is not working. For a
while the problem was intermittent, but now it completely quit. The
thermostat is working properly, sending the furnace the signal to
heat. The sensors and the igniter are working. The igniter glows and
is ready for the gas valve to open. You hear a click in the control
module and the gas valve does not turn on and the igniter shuts down.
We are torn between the control module and the gas valve being
defective. Any help would be very appreciated.

Put a VOM on the wires going to the gas valve. If it gets voltage
when it's supposed to open, then it's the valve. No voltage, then
it's something else, most likely the controller. I'd also measure
the voltage with the wires disconnected, because if the valve
solenoid is shorted you could read zero or low voltage due to
the short. Voltage is usually 24V.

I agree with your answer, but I would add that it is not uncommon for
the coil on the gas valve to open up. He could put an ohm meter on the
coil connection with one wire removed to check the coil. I have had at
least two valves that had open coils.

wrote:
Hello all! I have a Coleman Gas Furnace that is not working. For a
while the problem was intermittent, but now it completely quit. The
thermostat is working properly, sending the furnace the signal to
heat. The sensors and the igniter are working. The igniter glows and
is ready for the gas valve to open. You hear a click in the control
module and the gas valve does not turn on and the igniter shuts down.
We are torn between the control module and the gas valve being
defective. Any help would be very appreciated.
Hi,
No trouble code? Or valve coil is shot or no voltage to it when it
supposes to,

On Sun, 4 Dec 2011 07:31:44 -0800 (PST), wrote:

Hello all! I have a Coleman Gas Furnace that is not working. For a
while the problem was intermittent, but now it completely quit. The
thermostat is working properly, sending the furnace the signal to
heat. The sensors and the igniter are working. The igniter glows and
is ready for the gas valve to open. You hear a click in the control
module and the gas valve does not turn on and the igniter shuts down.
We are torn between the control module and the gas valve being
defective. Any help would be very appreciated.
I'd be very suspicious of a plugged inlet screen in the gas valve,
but it should be relatively easy to determine if power is being
delivered to the gas valve by the control board.

On Sun, 4 Dec 2011 09:08:28 -0800 (PST), "
wrote:

On Dec 4, 10:31Â*am, wrote:
Hello all! I have a Coleman Gas Furnace that is not working. For a
while the problem was intermittent, but now it completely quit. The
thermostat is working properly, sending the furnace the signal to
heat. The sensors and the igniter are working. The igniter glows and
is ready for the gas valve to open. You hear a click in the control
module and the gas valve does not turn on and the igniter shuts down.
We are torn between the control module and the gas valve being
defective. Any help would be very appreciated.

Put a VOM on the wires going to the gas valve. If it gets voltage
when it's supposed to open, then it's the valve. No voltage, then
it's something else, most likely the controller. I'd also measure
the voltage with the wires disconnected, because if the valve
solenoid is shorted you could read zero or low voltage due to
the short. Voltage is usually 24V.
I would do the opposite - I'd test it with the valve connected,
because a high resistance connection would still show full voltage
when disconnected - and would show low or no voltage when connected. A
shorted solenoid is a much less likely situation - and can easily be
tested for with an ohm-meter.

On 12/4/2011 9:31 AM, wrote:
Hello all! I have a Coleman Gas Furnace that is not working. For a
while the problem was intermittent, but now it completely quit. The
thermostat is working properly, sending the furnace the signal to
heat. The sensors and the igniter are working. The igniter glows and
is ready for the gas valve to open. You hear a click in the control
module and the gas valve does not turn on and the igniter shuts down.
We are torn between the control module and the gas valve being
defective. Any help would be very appreciated.

Would you happen to have the model number of your furnace? I may be able
to look up the wiring diagram or service manual online. If your
furnace is a later model, the problem could be something as simple as
a Klixon temperature sensor with a manual reset button. I found a good
example picture showing what a manual reset safety sensor looks like
and you'll notice the reset button between the Faston terminals. The
one you have may have a smaller black button and there may be several
mounted in different places inside the burner cover.

http://www.mobilehomerepair.com/medi...yne/626343.jpg

TDD

On Dec 4, 2:24*pm, The Daring Dufas
wrote:
On 12/4/2011 9:31 AM, wrote:

Hello all! I have a Coleman Gas Furnace that is not working. For a
while the problem was intermittent, but now it completely quit. The
thermostat is working properly, sending the furnace the signal to
heat. The sensors and the igniter are working. The igniter glows and
is ready for the gas valve to open. You hear a click in the control
module and the gas valve does not turn on and the igniter shuts down.
We are torn between the control module and the gas valve being
defective. Any help would be very appreciated.

Would you happen to have the model number of your furnace? I may be able
to look up the wiring diagram or service manual online. If your
furnace is a later model, the problem could be something as simple as
a Klixon temperature sensor with a manual reset button. I found a good
example picture showing what a manual reset safety sensor looks like
and you'll notice the reset button between the Faston terminals. The
one you have may have a smaller black button and there may be several
mounted in different places inside the burner cover.

http://www.mobilehomerepair.com/medi...yne/626343.jpg

TDD

The model number is: 7970-656/D One thing my husband did do, he
hooked up a power supply to the gas valve while it was going through
the cycle and it opened to allow gas into the burning chamber. The
meter says it is getting voltage, so I am rather confused. Thank you
all for trying to help, you have no idea how much I appreciate it.

On Dec 4, 6:15*pm, wrote:
On Dec 4, 2:24*pm, The Daring Dufas
wrote:





On 12/4/2011 9:31 AM, wrote:

Hello all! I have a Coleman Gas Furnace that is not working. For a
while the problem was intermittent, but now it completely quit. The
thermostat is working properly, sending the furnace the signal to
heat. The sensors and the igniter are working. The igniter glows and
is ready for the gas valve to open. You hear a click in the control
module and the gas valve does not turn on and the igniter shuts down.
We are torn between the control module and the gas valve being
defective. Any help would be very appreciated.

Would you happen to have the model number of your furnace? I may be able
to look up the wiring diagram or service manual online. If your
furnace is a later model, the problem could be something as simple as
a Klixon temperature sensor with a manual reset button. I found a good
example picture showing what a manual reset safety sensor looks like
and you'll notice the reset button between the Faston terminals. The
one you have may have a smaller black button and there may be several
mounted in different places inside the burner cover.

http://www.mobilehomerepair.com/medi...yne/626343.jpg

TDD

The model number is: 7970-656/D *One thing my husband did do, he
hooked up a power supply to the gas valve while it was going through
the cycle and it opened to allow gas into the burning chamber. The
meter says it is getting voltage, so I am rather confused. Thank you
all for trying to help, you have no idea how much I appreciate it.- Hide quoted text -

- Show quoted text -

Maybe the volts from the power supply spin clockwise
while the volts from the control board spin counter-clockwise?
Could be the valve was made for Australia.

On Sun, 4 Dec 2011 15:15:24 -0800 (PST), wrote:

On Dec 4, 2:24Â*pm, The Daring Dufas
wrote:
On 12/4/2011 9:31 AM, wrote:

Hello all! I have a Coleman Gas Furnace that is not working. For a
while the problem was intermittent, but now it completely quit. The
thermostat is working properly, sending the furnace the signal to
heat. The sensors and the igniter are working. The igniter glows and
is ready for the gas valve to open. You hear a click in the control
module and the gas valve does not turn on and the igniter shuts down.
We are torn between the control module and the gas valve being
defective. Any help would be very appreciated.

Would you happen to have the model number of your furnace? I may be able
to look up the wiring diagram or service manual online. If your
furnace is a later model, the problem could be something as simple as
a Klixon temperature sensor with a manual reset button. I found a good
example picture showing what a manual reset safety sensor looks like
and you'll notice the reset button between the Faston terminals. The
one you have may have a smaller black button and there may be several
mounted in different places inside the burner cover.

http://www.mobilehomerepair.com/medi...yne/626343.jpg

TDD

The model number is: 7970-656/D One thing my husband did do, he
hooked up a power supply to the gas valve while it was going through
the cycle and it opened to allow gas into the burning chamber. The
meter says it is getting voltage, so I am rather confused. Thank you
all for trying to help, you have no idea how much I appreciate it.
Was it connected when you checked the voltage? Like I said in a
previous post - a high resistance connection in the control circuit
will show full voltage when open circuit, and low or no voltage when
connected to the load (solenoid coil).I'm suspicious you have a cold
solder joint somewhere on the control board

If the gas valve opens with 24 VAC applied, it's not the problem. Now, on to
other things.

wrote in message
...


The model number is: 7970-656/D One thing my husband did do, he
hooked up a power supply to the gas valve while it was going through
the cycle and it opened to allow gas into the burning chamber. The
meter says it is getting voltage, so I am rather confused. Thank you
all for trying to help, you have no idea how much I appreciate it.

Would that power signal tend to close the valve more tightly? Some of those
South American models had that problem, I heard.

wrote in message
...


Maybe the volts from the power supply spin clockwise
while the volts from the control board spin counter-clockwise?
Could be the valve was made for Australia.

You might have the skills to troubleshoot, and see if power is being
delivered to the gas valve. That will help with the diagnosis.

wrote in message
...
Hello all! I have a Coleman Gas Furnace that is not working. For a
while the problem was intermittent, but now it completely quit. The
thermostat is working properly, sending the furnace the signal to
heat. The sensors and the igniter are working. The igniter glows and
is ready for the gas valve to open. You hear a click in the control
module and the gas valve does not turn on and the igniter shuts down.
We are torn between the control module and the gas valve being
defective. Any help would be very appreciated.

On Dec 4, 7:42*pm, wrote:
On Sun, 4 Dec 2011 15:15:24 -0800 (PST), wrote:
On Dec 4, 2:24*pm, The Daring Dufas
wrote:
On 12/4/2011 9:31 AM, wrote:

Hello all! I have a Coleman Gas Furnace that is not working. For a
while the problem was intermittent, but now it completely quit. The
thermostat is working properly, sending the furnace the signal to
heat. The sensors and the igniter are working. The igniter glows and
is ready for the gas valve to open. You hear a click in the control
module and the gas valve does not turn on and the igniter shuts down..
We are torn between the control module and the gas valve being
defective. Any help would be very appreciated.

Would you happen to have the model number of your furnace? I may be able
to look up the wiring diagram or service manual online. If your
furnace is a later model, the problem could be something as simple as
a Klixon temperature sensor with a manual reset button. I found a good
example picture showing what a manual reset safety sensor looks like
and you'll notice the reset button between the Faston terminals. The
one you have may have a smaller black button and there may be several
mounted in different places inside the burner cover.

http://www.mobilehomerepair.com/medi...yne/626343.jpg

TDD

The model number is: 7970-656/D *One thing my husband did do, he
hooked up a power supply to the gas valve while it was going through
the cycle and it opened to allow gas into the burning chamber. The
meter says it is getting voltage, so I am rather confused. Thank you
all for trying to help, you have no idea how much I appreciate it.

*Was it connected when you checked the voltage? Like I said in a
previous post - a high resistance connection in the control circuit
will show full voltage when open circuit, and low or no voltage when
connected to the load (solenoid coil).I'm suspicious you have a cold
solder joint somewhere on the control board

Thank you all SO much for your input. After doing a lot of
troubleshooting, reading what everyone had to say, and reading on
other sites, we went ahead and replaced the control module and it is
working beautifully

Every once in a while, a home gets repaired, with advice from the readers of
this list. This is one such moment, and that feels good. Of course, the HVAC
contractors of the world wanted the business, too.

wrote in message
...

Was it connected when you checked the voltage? Like I said in a
previous post - a high resistance connection in the control circuit
will show full voltage when open circuit, and low or no voltage when
connected to the load (solenoid coil).I'm suspicious you have a cold
solder joint somewhere on the control board

Thank you all SO much for your input. After doing a lot of
troubleshooting, reading what everyone had to say, and reading on
other sites, we went ahead and replaced the control module and it is
working beautifully

I have a Coleman furness model #7956a856 aND the plastic button you push down for pilot and start broken in half dose anyone know how I can get it fixed or who I can call to ask for a replacement part thanks for your help.

I have a Colman Furness button you push down broke in half does anyone know who I can call to get this fixed model number 795-6a856

On 4/11/2016 5:51 AM, wrote:
I have a Coleman furness model #7956a856 aND the plastic button you push down for pilot and start broken in half dose anyone know how I can get it fixed or who I can call to ask for a replacement part thanks for your help.


I know of at least one parts house that carries
Coleman. You might look in your phone book under
heating contrators. Maybe one of those companies
can get the part you need.

--
..
Christopher A. Young
learn more about Jesus
.. www.lds.org
..
..

On Mon, 11 Apr 2016 02:51:16 -0700 (PDT),
wrote:

I have a Coleman furness model #7956a856 aND the plastic button you push down for
pilot and start broken in half dose anyone know how I can get it fixed or who I can call
to ask for a replacement part thanks for your help.

If its just the button, you might be able to glue it with JB-Weld.