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Issues with a Trane TDE100A '71 1800E 02-14-2007
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Posted by '71 1800E on February 14, 2007, 9:42 pm
My Trane TDE100A9455M2 is flaking out on me. Symptom is that the
igniter goes out just a moment before the gas valve opens and fails to
ignite. Typically, it ends up cycling until the IFC locks it out and
decides to blow cold air around the house.

The company that installed the unit for the previous owner of the home
came out and told me the IFC was broken and quoted something like $500
to replace it. "Shenanigans," said I and tried to track down what the
IFC really costs. It's a White Rogers 50A55-476, which according to
google doesn't exist and it doesn't show up in the white rogers online
catalog and trane doesn't seem to have an online parts list either.

So, I finally gave up and got a 50A55-843 off ebay NIB for cheap. When
it's installed it powers up, then turns on the blower and reports that
the flame sensor has detected flame when non called for. Presumably,
while otherwise compatible, the flame sensor installed doesn't work with
the 50A55-843.

Should I track down an alternate flame sensor that should work the
50A55-843 or try to track down a 50A55-476? Or am I going in the wrong
direction entirely?

TIA.

-K

Posted by on February 14, 2007, 9:50 pm
wrote:

>My Trane TDE100A9455M2 is flaking out on me. Symptom is that the
>igniter goes out just a moment before the gas valve opens and fails to
>ignite. Typically, it ends up cycling until the IFC locks it out and
>decides to blow cold air around the house.
>
>The company that installed the unit for the previous owner of the home
>came out and told me the IFC was broken and quoted something like $500
>to replace it. "Shenanigans," said I and tried to track down what the
>IFC really costs. It's a White Rogers 50A55-476, which according to
>google doesn't exist and it doesn't show up in the white rogers online
>catalog and trane doesn't seem to have an online parts list either.
>
>So, I finally gave up and got a 50A55-843 off ebay NIB for cheap. When
>it's installed it powers up, then turns on the blower and reports that
>the flame sensor has detected flame when non called for. Presumably,
>while otherwise compatible, the flame sensor installed doesn't work with
>the 50A55-843.
>
>Should I track down an alternate flame sensor that should work the
>50A55-843 or try to track down a 50A55-476? Or am I going in the wrong
>direction entirely?
>
>TIA.
>
>-K

        You are going in EXACTLY the right direction.

        You look good in circles.


--
Click here every day to feed an animal that needs you today !!!
http://www.theanimalrescuesite.com/

Paul ( pjm @ pobox . com ) - remove spaces to email me
'Some days, it's just not worth chewing through the restraints.'
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HVAC/R program for Palm PDA's
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Posted by Noon-Air on February 14, 2007, 11:10 pm

> My Trane TDE100A9455M2 is flaking out on me. Symptom is that the
> igniter goes out just a moment before the gas valve opens and fails to
> ignite. Typically, it ends up cycling until the IFC locks it out and
> decides to blow cold air around the house.
>
> The company that installed the unit for the previous owner of the home
> came out and told me the IFC was broken and quoted something like $500
> to replace it. "Shenanigans," said I and tried to track down what the
> IFC really costs. It's a White Rogers 50A55-476, which according to
> google doesn't exist and it doesn't show up in the white rogers online
> catalog and trane doesn't seem to have an online parts list either.
>
> So, I finally gave up and got a 50A55-843 off ebay NIB for cheap. When
> it's installed it powers up, then turns on the blower and reports that
> the flame sensor has detected flame when non called for. Presumably,
> while otherwise compatible, the flame sensor installed doesn't work with
> the 50A55-843.
>
> Should I track down an alternate flame sensor that should work the
> 50A55-843 or try to track down a 50A55-476? Or am I going in the wrong
> direction entirely?

keep buying those non-returnable, electrical parts... eventually you will
get the right thing..... and how much time and money will you hav wasted??
Those boards are not free...... how much more will you have to waste before
you could have <gasp!> paid the tech, and now you'd have heat.

Sheesh



Posted by '71 1800E on February 14, 2007, 11:48 pm
Noon-Air wrote:
> keep buying those non-returnable, electrical parts... eventually you will
> get the right thing..... and how much time and money will you hav wasted??
> Those boards are not free...... how much more will you have to waste before
> you could have <gasp!> paid the tech, and now you'd have heat.

Gee. That's helpful. I certainly don't mean to be a jerk or anything
but it's not rocket science to replace a control board I didn't feel
like it was worth paying someone else to do it. I paid them to diagnose
it but didn't like what they wanted to charge - I was fine with the
labor. It was paying $300 for an IFC that got me, especially after
digging around to find out what they seem to list for.

SO, does any HVAC tech in here actually care to offer me any suggestions
besides telling me I should have just shut up and paid the contractor?

-K

Posted by on February 15, 2007, 12:02 am
wrote:

>Noon-Air wrote:
>> keep buying those non-returnable, electrical parts... eventually you will
>> get the right thing..... and how much time and money will you hav wasted??
>> Those boards are not free...... how much more will you have to waste before
>> you could have <gasp!> paid the tech, and now you'd have heat.
>
>Gee. That's helpful. I certainly don't mean to be a jerk or anything
>but it's not rocket science to replace a control board

        That's right, jerk - plugging the board in ain't rocket
science.

        DIAGNOSING the mother fucker correctly is a bit trickier.

>I didn't feel
>like it was worth paying someone else to do it. I paid them to diagnose
>it but didn't like what they wanted to charge - I was fine with the
>labor. It was paying $300 for an IFC that got me, especially after
>digging around to find out what they seem to list for.
>
>SO, does any HVAC tech in here actually care to offer me any suggestions
>besides telling me I should have just shut up and paid the contractor?

        Nope.


>
>-K

--
Click here every day to feed an animal that needs you today !!!
http://www.theanimalrescuesite.com/

Paul ( pjm @ pobox . com ) - remove spaces to email me
'Some days, it's just not worth chewing through the restraints.'
'With sufficient thrust, pigs fly just fine.'
HVAC/R program for Palm PDA's
Free demo now available online http://pmilligan.net/palm/

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