What was found
DURING APU START, THE FAULT LIGHT CAME ON, FOLLOWING THE QRH, THE LIGHT WENT OUT WITHIN 5 MINUTES. TRIED STARTING THE APU AGAIN, THE FAULT CAME ON AGAIN. ACFT GROUNDED. ACCOMPLISHED APU BITE REF FIM 49-60, TASK 801. CURRENT STATUS PAGE LOGGED FAULT 49-41011, NO FLAME SHUTDOWN. ACCOMPLISHED B737-900 FIM 49-40 TASK 802. FAULT CLEARED STARTED APU 3X WITH NO DEFECTS NOTED. INTERMITTENT FAULT OK FOR SERVICE.