- Check the APU operating state (OPST) and APU RPM (NA).
- If OPST is 0 (power up), the fault is confirmed, follow the trouble-shooting instructions in 4A.
- If OPST is 1,2,3....or 12 or if the APU RPM is not null, the fault message is spurious and may be disregarded. In this case performe the APU operational test (Ref. AMM TASK 49-00-00-710-008) and confirm that the message is not logged again.
NOTE : Make sure that 5 seconds elapsed between APU MASTER P/BSW ON and
____
the APU START P/BSW is pressed in.
4. Fault Isolation
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A. Maintenance Action
(1) If the APU Last Leg Report gives the maintenance message:
FUEL CTL UNIT (8022KM):
Fault Code Number: 021 or 089
- do a check of the FUEL CONTROL UNIT connector P19 for good condition. Replace if necessary.
(a) If the fault continues:
- do a check and repair the wiring from the ECB (59KD) AB/F11, J3 to the FUEL CONTROL UNIT (8022KM) P19/1, 2 (Ref. ASM 49-61/02).
1 If the fault continues:
_
- replace the FUEL CONTROL UNIT (8022KM) (Ref. AMM TASK 49-32-11-000-002) and (Ref. AMM TASK 49-32-11-400-002).
a If the fault continues:
_
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-002) and (Ref. AMM TASK 49-61-34-400-002).
(2) If the APU Last Leg Report gives the maintenance message:
FUEL CTL UNIT (8022KM):
Fault Code Number: 059 or 060
- do a check of the FUEL CONTROL UNIT connector P19 for good condition. Replace if necessary.
(a) If the fault continues:
- do a check and repair the wiring from the ECB (59KD) AB/H10, H11 to the FUEL CONTROL UNIT (8022KM) P19/3, 4 (Ref. ASM 49-61/02).
1 If the fault continues:
_
- replace the FUEL CONTROL UNIT (8022KM) (Ref. AMM TASK 49-32-11-000-002) and (Ref. AMM TASK 49-32-11-400-002).
a If the fault continues:
_
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-002) and (Ref. AMM TASK 49-61-34-400-002).
B. Do the test given in para. 3.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 106-106, 108-149, 211-299, 301-399, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page A255
Config-2 Aug 01/05 CES
TASK 49-00-00-810-981
APU AUTO SHUT DOWN - NO ACCELERATION, Main Start Contactor Fault or Batteries not selected (APS 3200)
1. Possible Causes
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- the BAT 1 and 2 pushbutton switches are selected OFF
- aircraft wiring
- CONTACTOR-MAIN START 5KA
- ECB 59KD
- APU MASTER SW (14KD)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 24-38-00-710-001 Operational Test of the Battery Charge Limiter (BCL), (with the CFDS) AMM 24-38-00-710-001 Operational Test of the Battery Charge Limiter (BCL),
(without the CFDS) AMM 49-00-00-710-008 Operational Test of the APU (APS 3200) AMM 49-61-34-000-002 Removal of the Electronic Control Box (ECB) (59KD)
(APS 3200) AMM 49-61-34-400-002 Installation of the Electronic Control Box (ECB)
(59KD) (APS 3200) ASM 49-42/01 AWM 49-42-01
3. Fault Confirmation
__________________
A. Do the operational test of the APU (Ref. AMM TASK 49-00-00-710-008).
NOTE : Before you start the operational test of the APU, make sure that:
____
- the battery charge limiters 1PB1 and 1PB2 are serviceable (Ref. AMM TASK 24-38-00-710-001) or (Ref. AMM TASK 24-38-00-710-001),
- the BAT 1 and 2 pushbutton switches are pushed (the FAULT and OFF legends areoff). If the BAT 1 and 2 pushbutton switches are selected OFF, the start contactors are disconnected from the power supply,
- the Ram Air Turbine is in the retracted position.
4. Fault Isolation
_______________
A. If the APU Last Leg Report gives the maintenance message:
ACFT BAT NOT SELECTED / CONTACTOR (5KA)
Fault Code Number: 051
Additionally:
Fault Code Number: 085
NOTE : The APU SHUTDOWNS report gives the maintenance message: 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 机载辅助动力 1(134)
