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Armstrong gas furnace won't kick off

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Armstrong gas furnace won't kick off ne@ 11-20-2006
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Posted by ne@ on November 20, 2006, 3:49 pm
Hi,

I have a Armstrong Air Ultra V - Tech 80 furnace with a Honeywell
Smartvalve II SV9520H which doesn't start. Here are the details about
the problem:

1. When the thermostat is on the OFF position, the led indicating the
status is showing the normal function "heartbeat"
2. Turn the heat on the thermostat (80 F) and set the thermostat to
AUTO - nothing happens, the furnace won't kick off.
3. Set the thermostat switch to ON - the blower kicks off but the gas
won't light. After about 20-30 seconds, the status led starts flashing
3 times which means: "Presure switch open. Should be closed".

NOTE: The gas is on and the furnace turned on from the main switch.

Any idea of what might be wrong with the furnace and how can I solve
the problem?

Thanks,
ne@


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Posted by Power's Mechanical on November 20, 2006, 4:05 pm

ne@ wrote:
> Hi,
>
> I have a Armstrong Air Ultra V - Tech 80 furnace with a Honeywell
> Smartvalve II SV9520H which doesn't start. Here are the details about
> the problem:
>
> 1. When the thermostat is on the OFF position, the led indicating the
> status is showing the normal function "heartbeat"
> 2. Turn the heat on the thermostat (80 F) and set the thermostat to
> AUTO - nothing happens, the furnace won't kick off.
> 3. Set the thermostat switch to ON - the blower kicks off but the gas
> won't light. After about 20-30 seconds, the status led starts flashing
> 3 times which means: "Presure switch open. Should be closed".
>
> NOTE: The gas is on and the furnace turned on from the main switch.
>
> Any idea of what might be wrong with the furnace and how can I solve
> the problem?
>
> Thanks,
> ne@

Check for a blockage in the flue pipe.


Posted by danger@heat.com on November 20, 2006, 5:29 pm
Is the switch on the gas valve turned on? I have seen weird lockout codes
caused by this...

Turning the tstat to on, should only turn on the fan, not the heat. You may
have a low voltage wiring problem.

There's a good possibility you have a bad smart valve though, they are crap.

BTW when you say the blower starts, is that the fan that moves air thru the
house, or the fan that blows the smoke outside?
If in fact the ventor motor is starting, the fan that blows smoke outside, I
agree with the other suggestion, find the blockage in your flue
pipe.

-Canadian Heat


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Posted by Steve Scott on November 20, 2006, 4:45 pm
There are simply too many things which could cause the problem.
Anything from a defective wire to/from the pressure switch to a failed
inducer to a bad control board and many parts in between.


>Hi,
>
>I have a Armstrong Air Ultra V - Tech 80 furnace with a Honeywell
>Smartvalve II SV9520H which doesn't start. Here are the details about
>the problem:
>
>1. When the thermostat is on the OFF position, the led indicating the
>status is showing the normal function "heartbeat"
>2. Turn the heat on the thermostat (80 F) and set the thermostat to
>AUTO - nothing happens, the furnace won't kick off.
>3. Set the thermostat switch to ON - the blower kicks off but the gas
>won't light. After about 20-30 seconds, the status led starts flashing
>3 times which means: "Presure switch open. Should be closed".
>
>NOTE: The gas is on and the furnace turned on from the main switch.
>
>Any idea of what might be wrong with the furnace and how can I solve
>the problem?
>
>Thanks,
>ne@


--
D.A.D.D. - Daddies Against Dirty Diapers





Posted by =?iso-8859-15?Q?Tekkie=AE?= on November 20, 2006, 6:18 pm
ne@ posted for all of us...

> Hi,
>
> I have a Armstrong Air Ultra V - Tech 80 furnace with a Honeywell
> Smartvalve II SV9520H which doesn't start. Here are the details about
> the problem:
>
> 1. When the thermostat is on the OFF position, the led indicating the
> status is showing the normal function "heartbeat"
> 2. Turn the heat on the thermostat (80 F) and set the thermostat to
> AUTO - nothing happens, the furnace won't kick off.
> 3. Set the thermostat switch to ON - the blower kicks off but the gas
> won't light. After about 20-30 seconds, the status led starts flashing
> 3 times which means: "Presure switch open. Should be closed".
>
> NOTE: The gas is on and the furnace turned on from the main switch.
>
> Any idea of what might be wrong with the furnace and how can I solve
> the problem?
>
> Thanks,
> ne@
>
>
WOW this says a lot from the title... This furnace must really have ticked you
off to get you to want it to kick off. Why not just have it replaced? Most
posters don't want to spend ANY money on their stuff and here you want it to
kick off.
--
Tekkie Don't bother to thank me, I do this as a public service.

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