AN AIRBUS REJECTED 2 TKOF'S FOR A VENTILATION AVIONICS SYS FAULT ECAM WARNING. BOTH MAINT ACTIONS WERE RESET CIRCUIT BREAKERS AND SWITCHES.

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ABORTED 2 TKOF'S AFTER GETTING VENT AVIONICS SYS FAULT. ECAM CAME ON AT 80 KT CALL; ABORTED SHORTLY AFTER (APPROX 100 KTS). CLRED RWY AND RETURNED TO GATE FOR BRAKE COOLING AND MAINT. BRAKE TEMPS PEAKED AT 550 DEGS C AND COOLED DOWN AT GATE. MAINT RESET SEVERAL CIRCUIT BREAKERS AND SIGNED OFF GRIPE. SECOND TKOF ATTEMPTED WITH EXACTLY THE SAME ECAM AND ABORT. BRAKES DIDN'T GET AS HOT THIS TIME; AS I WAS ABLE TO GET THE MAX BRAKES OFF A LOT FASTER. I CAN BE TRAINED! WE RETURNED TO GATE AND CONTACTED MAINT CTLR AND DISPATCH AND I REFUSED THE ACFT. WHILE PACKING UP OUR STUFF TO LEAVE THE ACFT; A DIFFERENT MAINT GUY; RATHER THAN THE ACR MAINT GUY WHO WORKED ON IT THE FIRST TIME; TOLD US HE HAD FIXED IT BY RETURNING A COUPLE OF SWITCHES IN THE E/E COMPARTMENT TO AUTO FROM ON. A COUPLE OF QUESTIONS I AND ACR SHOULD GET ANSWERED: 1) WERE THE SWITCHES ACTUALLY IN THE WRONG POS AND DID THAT FIX IT? 2)IF THAT WAS A PROB; WHY WEREN'T THEY CHKED AFTER THE FIRST ABORT? 3) IF THEY WERE IN THE WRONG POS; HOW DID THEY GET THERE IN THE FIRST PLACE?