You may want to remove and clean the catalytic converter with there cleaner only. Explained on pages 64 and 65 of the service manual here;Â
https://download.partstown.com/is-bin/intershop.static/WFS/Reedy-PartsTown-Site/-/en_US/manuals/TBC-NGC_spm.pdf
If any kitchen staff used antthing other than Turbochef cleaner and distilled water there is converter damage.
Irreversible damage can occur if the catalyst is exposed to cleaning chemicals containing phosphates, NaOH, silicates, Na and Potassium Salts.Â
That pertty much guarantees that there is some damage as I know of no kitchen that would be that careful unless it was one owner cook that did his own cleaning.
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I’m not certain I understand your problem fully. Can you tell us more? You may also check what is programmed into the machine.