DIY Home Improvement, Remodeling & Repair Forum > Appliances > HVAC > Trane xe90 has stopped at the station




Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old 01-22-2013, 10:18 AM  
kurgen
Junior Member
 
Join Date: Jan 2013
Posts: 4
Default Trane xe90 has stopped at the station

Folks,

My unit is an XE90 model tux080c942c3, serial z2833rt7g. I have had annual issues with this baby, but this year, it is not cooperating. When switched on, the exhaust fan starts up and the ignitor (new) starts to heat (I know this cause I burnt my finger on it), but before it can get to glowing, the exhaust fan kicks off and the unit clicks into the circulator fan clearing out the system. I am getting nine blinks on the unit (check ignitor). I ran a snake up the exhaust pipe and checked the roof vent as well as opened the pipe in the attic. It appears clear. I also gave the flame sensor a quick sanding to clean it off. Any thoughts? Could the exhaust fan pressure sensor be bad?

Thanks



__________________
kurgen is offline  
 
Reply With Quote Quick reply to this message
Old 01-22-2013, 02:44 PM  
Wuzzat?
Senior Member
 
Wuzzat?'s Avatar
 
Join Date: Jan 2010
Posts: 2,110
Liked 126 Times on 114 Posts
Likes Given: 73

Default

For $100 in equipment you can probably make all the necessary measurements to isolate the problem to a single component.

Think of it as tuition for an HVAC course.



__________________
Wuzzat? is offline  
 
Reply With Quote Quick reply to this message
Old 01-22-2013, 02:52 PM  
kurgen
Junior Member
 
Join Date: Jan 2013
Posts: 4
Default

Sounds like a good plan. Problem is Trane does not provide a ton of detail on voltages, resistance or anything else for that matter, including a parts list. At least for a car you can get a detailed manual.

__________________
kurgen is offline  
 
Reply With Quote Quick reply to this message
Old 01-22-2013, 04:51 PM  
kok328
Supporting Member
HRT_SUPPORTER.png
 
Join Date: Nov 2007
Location: Grand Blanc, MI
Posts: 2,136
Liked 92 Times on 81 Posts
Likes Given: 59

Default

If 9 blinks is "check ignitor" then check it. Do not touch the ignitor with your fingers as the oil on you skin will create a hot spot on the ignitor surface (similar problem as the newer automotive headlight bulbs). Check the ignitor to see if it ohms out at 100 or less. Anything over that and the ignitor is worn out. It should glow redish/orange when heating up, if not then that may be your problem. Good luck on finding a replacement, they aren't easy to come by without a mechanical license. You may be able to find a universal replacement from someplace like Graingers.

__________________
kok328 is offline  
 
Reply With Quote Quick reply to this message
Old 01-22-2013, 06:08 PM  
Wuzzat?
Senior Member
 
Wuzzat?'s Avatar
 
Join Date: Jan 2010
Posts: 2,110
Liked 126 Times on 114 Posts
Likes Given: 73

Default

http://www.grainger.com/Grainger/ecatalog/N-1z0du0f
__________________
Wuzzat? is offline  
 
Reply With Quote Quick reply to this message
Old 01-22-2013, 06:44 PM  
keepinitcool
Junior Member
 
Join Date: Jan 2013
Posts: 27
Liked 9 Times on 7 Posts
Likes Given: 6

Default

Get a glowfly. Pretty universal hot surface ignitor.

__________________
keepinitcool is offline  
 
Reply With Quote Quick reply to this message
Old 01-23-2013, 10:26 AM  
kurgen
Junior Member
 
Join Date: Jan 2013
Posts: 4
Default

I found a new ignitor and put it in. No change to the situation. I am going to try replacing the flame sensor and the limit switch on the draft inducer fan to see if that is the issue. I pulled the fan last evening and it would run when outside the housing, but with any back pressure (even when disconnected from the pipe and just sitting there with the air going half up the pipe) the fan would kick off as before. I have seen the flame sensors around. Any idea on finding the limit switch...or am I chasing the wrong car?

__________________
kurgen is offline  
 
Reply With Quote Quick reply to this message
Old 01-23-2013, 10:32 AM  
kurgen
Junior Member
 
Join Date: Jan 2013
Posts: 4
Default

BTW, Thank KOK328.

__________________
kurgen is offline  
 
Reply With Quote Quick reply to this message
Old 01-23-2013, 04:03 PM  
Wuzzat?
Senior Member
 
Wuzzat?'s Avatar
 
Join Date: Jan 2010
Posts: 2,110
Liked 126 Times on 114 Posts
Likes Given: 73

Default

Quote:
Originally Posted by kurgen View Post
I found a new ignitor and put it in. No change to the situation.
Bad Mojo?


Here is my generic DIY strategy which might have led you wrong in this case.

DIY or HAP (Hire A Pro)?
If in the unlikely case that HAP will cost you less than the part cost then HAP. If HAP costs >10x or 100x the parts cost, take the gamble.
When is this decision a toss-up?

Here are numbers for an optimistic 10% chance that the part will not work, and for a pessimistic 50% that the part will work.

40 >enter parts cost PC in dollars
10 >enter likelihood in percent L of having to HAP after you buy the part
1000 >enter probable HAP in dollars
140 = your calc'd DIY cost CDIY = PC + HAP x L/100
so choose DIY

40 >enter parts cost PC in dollars
50 >enter likelihood in percent L of having to HAP after you buy the part
200 >enter probable HAP in dollars
140 = your calc'd DIY cost CDIY = PC + HAP x L/100
so choose DIY but with less assurance
__________________

Last edited by Wuzzat?; 01-23-2013 at 04:06 PM.
Wuzzat? is offline  
 
Reply With Quote Quick reply to this message
Old 01-23-2013, 04:10 PM  
kok328
Supporting Member
HRT_SUPPORTER.png
 
Join Date: Nov 2007
Location: Grand Blanc, MI
Posts: 2,136
Liked 92 Times on 81 Posts
Likes Given: 59

Default

Sorry to hear that the new ignitor didn't fix the problem but, I did mention to test it before replacing it.



__________________
kok328 is offline  
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
Trane XE90 problem MikeD1980 HVAC 3 09-14-2010 06:13 PM
Trane XE90 Furnace Billshouse HVAC 1 02-02-2010 04:35 PM
Trane fan has stopped 2803 HVAC 7 08-02-2009 11:29 PM
Trane XE90 TheGunMan HVAC 0 06-04-2009 04:53 PM
Trane XE90 Malfunctioning kappaman HVAC 2 12-16-2008 04:22 PM