[efair]

what exactly is the message on the IC?

 

[efair]

Without seeing the codes it's hard to say what part it is, themostat, level switch, temp sensor, etc.
You need to scan it again, preferably with SDS, and post the exact codes here. Find a mechanic with SDS if possible - accept no substitutes. There are some "almost as good" scanners that may help in this case, but a mechanic with actual SDS is going to be your best bet.

 

[efair]

Have you had it on SDS yet, and if yes what codes were present? Not much sense in arguing about it until we have those. With that message on the IC there will almost certainly be codes present in SDS.

 

[efair]

There is something digital in the fan, IDK if it's a "module" though. I don't have any experience with it other than removing and reinstalling my fan.

My guess here would be your fan needs replacement.