If a roll out were tripped, the unit would run nonstop blower and never start for the 5 minutes you mention it runs. A roll out would not let it run 5 min and then run run again without physically resetting the roll out.
So if you have not pressed a roll out...there is no way the furnace could run 5 minutes.
Now the 33 code refers to (2) faults...a high limit trip which is caused by overheat and secondary is the roll outs. A high limit can trip and reset itself when cooled..a roll out can not.
So in short you are wasting time checking a roll out. The issue will be bad blower motor, bad circuit board, dirty filter, air restriction of some sort.
The limit is located on the front wall of the furnace behind the gas valve. Most are the size of a credit card with 2 wires attached.
Many times it will reset by tapping it with power off.
There are a few models that have round limit switches...we could be specific if you had the model number.
So if you need help let me know...but I assure you it is not the rollout if you have not been pressing a button one.
Odds are much greater it is tripped limit if furnace runs for 5 minutes.
If you need further elp let me know.