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Old 09-17-2010, 09:20 AM   #1
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Carrier 9200 / 58MXA how to remove HSI?


Hey Guys,

I have a Carrier Weathermaker 9200 / 58MXA. Yesterday my furnace stopped and after shutting it down and restarting it refused to ignite. After it fails to ignite it gave error code 34.

I checked the for 120v at the board and at the HSI connector and I am getting 120v. So looks like my HSI is toast. I checked resistance with multimeter on HSI to verify and it is indeed bad.

My problem is, is that the HSI is in a real tough spot with no room to see much or move around. I can see that the HSI appears to be held in by a metal clip, I don't see any 1/4" screws. Can anyone confirm that the only thing holding the HSI in place is the clip? I really don't want to wreck the metal bracket as it looks like I would have to disassemble the ignitor box in order to repair that. Also, is it supposed to be really stuck in there? or should it come out easy once I bypass the clips?

Thanks


Last edited by revg; 09-17-2010 at 10:16 AM.
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Old 09-17-2010, 12:42 PM   #2
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Carrier 9200 / 58MXA how to remove HSI?


Alright, I found a maintenance and service manual online for my furnace at this link http://www.docs.hvacpartners.com/idc.../58mxa-6sm.pdf

It says,

Quote:
"Do not remove ignitor from bracket while assembly is in
furnace. Using a 1/4 in. nutdriver, remove screw securing
bracket and ignitor assembly to bottom of burner box. The
screw in the bracket is always located toward outside of
burner box. The screw may be hidden by inlet box or inlet
pipe, but can be removed without removing either. After
removing screw, slide ignitor and bracket toward outside of
burner box and pull straight out."
Edit: The bracket in my furnace looks just like this one. I can't tell from this picture where a screw would go, but clearly it would have to be fastened on there somehow ?!?! lol



I cannot find the screw for the life of me that holds the bracket onto the burner box. This manual says there is one there, but I can't find it. Any chance anyone has experience with the Carrier Weathermaker 9200 58MXA and can confirm existence of screw? Has anyone ever seen an HSI on one of these that is not secured using a screw?

Thanks again!


Last edited by revg; 09-17-2010 at 01:05 PM.
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Old 09-17-2010, 03:07 PM   #3
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Carrier 9200 / 58MXA how to remove HSI?


Could it be someone worked on it in the past & left the screw out.. I can't tell you anything about your exact mod. , but most are held in with screw/screws
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Old 09-17-2010, 03:35 PM   #4
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Carrier 9200 / 58MXA how to remove HSI?


Quote:
Originally Posted by kenmac View Post
Could it be someone worked on it in the past & left the screw out.. I can't tell you anything about your exact mod. , but most are held in with screw/screws
Thanks for the reply.

I just finished taking a small mirror and positioning it underneath the HSI so I could see better and there is absolutely no screw anywhere. I guess it must be sealed with something on the gasket... I don't know.

But I have had both metal clips on each side pulled back and I cannot remove the HSI, it won't budge. I can't imagine what else could be holding it in place unless the casing maybe melted to the bracket somehow? anyone ever experience something like that before?
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Old 09-17-2010, 04:55 PM   #5
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Carrier 9200 / 58MXA how to remove HSI?


some of thise ignitors are in odd places...I have had to remove the entire burner assy to get them out
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Old 09-17-2010, 05:06 PM   #6
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Carrier 9200 / 58MXA how to remove HSI?


Quote:
Originally Posted by kenmac View Post
some of thise ignitors are in odd places...I have had to remove the entire burner assy to get them out
Oh My!

Well I think I might do just that, to make sure I don't break something.

Thank you
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Old 09-17-2010, 05:11 PM   #7
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Carrier 9200 / 58MXA how to remove HSI?


Try not to touch the carbon part of the new ignitor..

Looking at that bracket.. You may need to pull back on those inner tabs to slide the ignitor out
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Old 09-17-2010, 06:13 PM   #8
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Carrier 9200 / 58MXA how to remove HSI?


That manual is for the latest model of that furnace that uses a silicon nitride igniter quite different than yours. Yours is VERY VERY difficult to get out w/o removing the burner box. You have to be VERY careful not to wreck that red gasket around it or your burner will suck air thru there and have major ignition problems. Pry the tabs appart and it pulls straight down. Slip it in slightly off vertical and it breaks very easily

Good Luck and I hope you have LOTS of patience
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Last edited by yuri; 09-17-2010 at 06:16 PM.
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Old 09-17-2010, 06:19 PM   #9
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Carrier 9200 / 58MXA how to remove HSI?


Quote:
Originally Posted by yuri View Post
That manual is for the latest model of that furnace that uses a silicon nitride igniter quite different than yours. Yours is VERY VERY difficult to get out w/o removing the burner box. You have to be VERY careful not to wreck that red gasket around it or your burner will suck air thru there and have major ignition problems. Pry the tabs appart and it pulls straight down. Slip it in slightly off vertical and it breaks very easily

Good Luck and I hope you have LOTS of patience
Thank you for the info Yuri! Should it be difficult to pull out once I have spread the metal tabs apart sufficiently? Or should it slide out nice and easy?

I have had the tabs spread apart to what seems should do the trick but that HSI seem stuck in there.

Any thoughts?

Thanks
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Old 09-17-2010, 06:23 PM   #10
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Carrier 9200 / 58MXA how to remove HSI?


They are spring clips with barbs and a huge pain in the arze to deal with. Have to release one and pull down slightly, then release the other and pull down somemore. ONLY a genuine Carrier HSI fits in there, no universal ones as they are narrower. Probably best to remove the burner box. Yours is shot so who cares if you break it removing it. Wear mechanix gloves as the sharp porcelain will cut you bad. Check the air inlet pipe where it attaches to the burner box. Has a plastic screen in there that is notorious for plugging up with leaves/debris.
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Last edited by yuri; 09-17-2010 at 06:26 PM.
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Old 09-18-2010, 12:43 PM   #11
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Carrier 9200 / 58MXA how to remove HSI?


Just wanted to come back and thank you Kenmac and Yuri! I took your advice and removed the burner assembly to replace the HSI, put it all back together and I have heat again!

I can't tell you how much I appreciate what you guys do to help people out of the goodness of your hearts on your own spare time. Thank you so much

Cheers,
Greg
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Old 09-18-2010, 12:59 PM   #12
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Carrier 9200 / 58MXA how to remove HSI?


Quote:
Originally Posted by revg View Post
I can't tell you how much I appreciate what you guys do to help people out of the goodness of your hearts on your own spare time. Thank you so much

Cheers,
Greg


you've got to be kidding me . You know we get paid for this don't you

Your welcome,
Glad to be of some assistance
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Old 09-18-2010, 01:17 PM   #13
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Carrier 9200 / 58MXA how to remove HSI?


The old "cheques in the mail routine" eh?
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Old 11-30-2010, 07:49 PM   #14
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Carrier 9200 / 58MXA how to remove HSI?


I changed my HSI and the tabs on 1 side of the bracket broke off. I jury rigged it and it's not working out, any idea where can I get a new one? The bracket looks just like the one in the picture in this thread.

Paul
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Old 11-30-2010, 08:56 PM   #15
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Carrier 9200 / 58MXA how to remove HSI?


you may have to have a dealer order 1 for you if their still available. If not try high temp siliclne to hold it in place or make a bracket

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