Original message
| mtcorey
 |  "carrier rooftop"
, posted Wed 14 Nov 18:16  
What would be causing the flame rollout switch to keep tripping. Also a very bad odor coming from flue box that burns the eyes
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Replies:
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| commtech
| "Re(1):carrier rooftop" , posted Mon 14 Jan 18:35
Carriers are natorious for bad heat exchangers,we call it the 5 yr heat exchanger replacement program where I work.I bet if you take a co reading at the inducer motor discharge it will go off the scale.Carriers are also good for the inducer blower wheel falling apart.
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| | mtcorey
| "Re(2):carrier rooftop" , posted Thu 29 May 13:13
on the money
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| hvacdan1234
| "Re(1):carrier rooftop" , posted Thu 22 Nov 06:05
first the unit is not burning correctly gas nat or propane your role out is tripping because of high heat flames will not burn correctly thru soot.its safty devise. check or remove heat exchanger and clean make sure flame retainers and all plates are in there get a cut sheet from manufacturer
20 years in trade
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| amech
| "Re(1):carrier rooftop" , posted Wed 14 Nov 19:41
Sounds like you may have a bad heat exchanger. Does the flame rollout at start up or when main blower energizes? model & Serial would be helpful.
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| | mtcorey
| "Re(2):carrier rooftop" , posted Wed 14 Nov 22:06
Its a carrier weathermaker model 48dr601350. The flame does rollout at first. Could it maybe the flue tubes need cleaned because they look pretty bad.
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| | marchvac
| "Re(3):carrier rooftop" , posted Thu 15 Nov 21:35
Sounds like a bad heat exchanger.
Be careful sometimes you don't get a second chance
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| marchvac
| "Re(1):carrier rooftop" , posted Wed 14 Nov 19:40
What is the model and serial. Is it propane or nat. If the unit is belt drive where the motor is there is a panel below it. Remove that panel and check if there is a crack in heat exchanger.
Be careful sometimes you don't get a second chance
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