More to that story.................
In some operations where the ambient temps are low and the aircraft is mainly flown from A to B and very little in the hover the fan probably never runs.
Depends on the aircraft model as well but on a 1B engine this is pretty normal.
Downside is you may not realise this until you need it! Always used to short the temp switch on a preflight to be sure. Thats the one just behind the oil tank.