Fan Stop Teperature ?

[Plank!]

Thank you Chillyblue .

So is usefull only if the copressors are out of order to stop the fan inside the room ,and not warm the room.

Thats about right.
Mostly i work on industrial systems so i don't see many of these units, however I would look at setting the FST about 10c or more above normal room temp.
Less than that could prevent the system pulling the store temp down after defrost.
FST should be considered a back up to protect the store from extended defrosts or other mechanical faults.

Steve