TM 55-1520-240-T
15-2.2 APU SYSTEMS BITE INDICATION FAILURE TABLE (CONTINUED)
15-2.2
TABLE NO. 15-2.2 BITE INDICATION TABLE FOR APU SYSTEMS FAILURES (Continued)
Maintenance Action
NO.
BITE
INDICATION
SYMPTOM
DECODED
BITE DESCRIPTION
Task No.
APU STARTS BUT SHUTS DOWN
11
then
ESU Bite indicates
OVERSPEED
15-6.14
12
then
ESU Bite indicates
UNDERSPEED
15-6.15
13
then
ESU Bite indicates
OVERTEMPERATURE (HOT START)
15-6.16
14
then
ESU Bite indicates
OPEN THERMOCOUPLE
15-6.18
APU STARTS AND RUNS BUT SHUTS DOWN
15
then
ESU Bite indicates
OVERTEMPERATURE (HOT START)
15-6.17
APU STARTS AND RUNS
SHORTED THERMO. PROBE
16
ESU Bite indicates
(WARNING)
15-6.19
APU SHUTS DOWN WHEN GEN APU SWITCH PLACED TO ON
17
ESU Bite indicates
READY FOR SERVICE
15-2.14
APU SHUTS DOWN WHEN APU GEN SWITCH IS SET TO OFF
18
ESU Bite indicates
READY FOR SERVICE
15-2.15
APU DOES NOT STOP
19
ESU Bite indicates
READY FOR SERVICE
15-2.12
END OF TASK
Change 8 15-27
