ATR-72 FLT CREW HAS A CCAS FUEL FILTER CLOG MESSAGE WHILE ENRTE.

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TKOF AND CLB TO CRUISE WERE NORMAL. ABOUT 10 MINS AFTER WE REACHED CRUISING ALT OF 15000 FT; WE RECEIVED A CCAS MESSAGE INDICATING ENG ON THE CAP AND A FUEL CLOG LIGHT ON THE #2 ENG. CAPT CALLED FOR IDENT AND CANCEL; WHICH I DID THEN I RETRIEVED MY BOOK AND BEGAN TO LOOK UP THE PROC. NO ACTIONS ARE RECOMMENDED IN THE BOOK AND IT EVEN STATES THAT THE ACFT MAY CONTINUE TO FLY MULTIPLE LEGS AFTER A SINGLE FUEL CLOG IS ANNUNCIATED. ONCE WE LANDED; THE LIGHT EXTINGUISHED BEFORE ANY MAINT ACTION WAS TAKEN. THE CAPT ADVISED MAINT AND DISPATCH ABOUT THE PROB AFTER WE LANDED. THE DISPATCHER; THE CAPT; AND I WERE UNCOMFORTABLE WITH FLYING THE ACFT BACK WITHOUT FURTHER INVESTIGATION FROM ON-SITE MAINT PERSONNEL. MAINT CTL KEPT PRESSURING THE 3 OF US TO RETURN THE ACFT SO THAT THEY WOULD BE ABLE TO DO THE MAINT THERE. INSTEAD OF OFFERING TO HAVE THE FUEL FILTER CHKED; MAINT CTL CONTINUED TO PRESSURE US TOWARDS RETURNING THE ACFT. THEY ALSO CONTINUED TO PRESSURE THE CAPT TO CHANGE HIS WRITE-UP TO AN 'INFO TO MAINT.' IN THE MEANTIME THE FLT WAS CANCELED DUE TO VOLCANIC ASH. WHILE WE WERE ON THE GND MAINT SHOWED UP TO LOOK AT THE ENG. THE MECH INSPECTED ONE OF THE PROP BLADES ON THE #1 ENG; BUT I NEVER ACTUALLY SAW HIM INSPECT THE #2 ENG OR THE FUEL FILTER. THE NEXT MORNING WE ARRIVED TO TAKE A RESCHEDULED FLT IN THE SAME ACFT. A FEW MINS AFTER WE REACHED OUR CRUISING ALT; WE RECEIVED A CCAS MESSAGE AND A FUEL CLOG LIGHT. THE LIGHT REMAINED ON THROUGHOUT THE CRUISE; APCH AND LNDG PHASES OF THE FLT; THEN EXTINGUISHED DURING THE TAXI. THE CAPT WROTE UP AN INFO TO MAINT ONCE WE BLOCKED IN AT THE GATE; SO THERE WOULD NOT BE ANY CONFUSION AS TO WHETHER THE PROB STILL EXISTED.