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From a guy who has done HVAC for 42 years if it is getting that hot there is probably an issue. Most likely an airflow issue. Not knowing the age of equipment I would first see if there is a filter that is dirty, next check the blower wheel to see if all the blades are good and clean and no paper may have sucked in. ( I have seen papers left inside furnaces that manage to make it to the blower). You also might be able to speed up the blower. Last and not likely is that it may be over firing and that would require a service tech with a manometer to check the gas pressure at the burners while firing. Hope this helps. I would also recommend getting a thermometer and getting an accurate temp reading.
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