APU AUTO SHUT DOWN - APU FUEL VALVE OPEN, Fuel Control Unit Fault (APS 3200)

TASK 49-00-00-810-934-A
APU AUTO SHUT DOWN - APU FUEL VALVE OPEN, Fuel Control Unit Fault (APS 3200)

1. Possible Causes

FUEL CONTROL UNIT (8022KM)

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 49-00-00-710-008	Operational Test of the APU
AMM 49-32-11-000-002	Removal of the Fuel Control Unit (APS 3200)
AMM 49-32-11-400-002	Installation of the Fuel Control Unit (APS 3200)

3. Fault Confirmation
Subtask 49-00-00-710-304-B ** ON A/C NOT FOR ALL

A. Do the operational test of the APU AMM 49-00-00-710-008.

NOTE: To clear the fault cycle the circuit breaker
APU/APU/CTL ........ 2KD (L42)
on panel 121VU.

4. Fault Isolation
Subtask 49-00-00-810-241-C ** ON A/C NOT FOR ALL

A. If the APU Last Leg Report gives the maintenance message:

FUEL CTL UNIT (8022KM):
Fault Code Number: 099

NOTE: The APU SHUTDOWNS report gives the maintenance message:
APU FUEL VALVE FAILED OPEN - FUEL CTL UNIT (8022KM)
APU Auto Shut Down Fault Code Number: 099

replace the FUEL CONTROL UNIT (8022KM) AMM 49-32-11-000-002 and AMM 49-32-11-400-002.

Subtask 49-00-00-710-305-B ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:34:26 UTC