AN MD80 CONFIGURED FOR LNDG; GEAR DOWN; FLAPS 40 DEGS; GOT LNDG GEAR WARNING AND CABIN CHIMES. UNABLE TO SILENCE. PER MAINT CTL PULLED CENTRAL AURAL WARNING SYS CIRCUIT BREAKERS TO SILENCE.

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WHILE ON ILS FOR RWY 25L IN ZZZ WE BEGAN TO CONFIGURE. GEAR WENT DOWN AND LOCKED. WHEN 40 DEGS FLAPS WAS SELECTED THE CENTRAL AURAL WARNING SYS 'LNDG GEAR' WARNING AND CABIN CALL DING BEGAN TO GO OFF AND COULD NOT BE SILENCED WITH THE GEAR HORN SILENCE BUTTON. THE MULTIPLE WARNINGS CONTINUED TO GO OFF. THIS OCCURRED AT 1800 FT. AT 500 FT WE EXECUTED A GAR AND RECEIVED VECTORS TO TROUBLESHOOT THE PROB. ON CLEAN-UP THE WARNINGS WENT AWAY AS SOON AS I RAISED THE FLAPS PAST THE 27 DEG POS. THE BOOK HAD NOTHING THAT APPLIED TO THIS SITUATION. GEAR WAS DOWN AND 3 GREEN AND THE NOSE GEAR INDICATOR ON THE CONSOLE WAS UP AND IN VIEW. WE TRIED TO CONFIGURE AGAIN AND THE SAME THING HAPPENED. WE CALLED ZZZ MAINT WHO CALLED TECHNICIAN. THEY RECOMMENDED PULLING THE CENTRAL AURAL WARNING SYS BREAKERS DUE TO A BAD INPUT TO THE SYS. I WAS SURE WE HAD ALL GEAR DOWN AND LOCKED SO WE PROCEEDED BACK TO THE ARPT. PULLED THE APPROPRIATE CENTRAL AURAL WARNING SYS CIRCUIT BREAKERS ON TECHNICIAN'S ADVICE AND LANDED THE ACFT WITHOUT INCIDENT.