DOC AIRBUS | TSM A320FBackup Start Contactor failed open (APS 3200)
TASK 49-00-00-810-988-A
Backup Start Contactor failed open (APS 3200)
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 49-00-00-710-390-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 49-00-00-810-349-B ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:34:29 UTC
Backup Start Contactor failed open (APS 3200)
1. Possible Causes
- wiring
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| ESPM 2052210 | |
| ESPM 2053210 | |
| AMM 49-00-00-710-008 | Operational Test of the APU |
| ASM 494201 |
Subtask 49-00-00-710-390-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 49-00-00-810-349-B ** ON A/C NOT FOR ALL
A. If the APU Last Leg Report gives the maintenance message:
CURRENT LIMITER 6KA / CONTACTOR 10KA
Fault Code Number: 126
Subtask 49-00-00-710-391-A ** ON A/C NOT FOR ALL CURRENT LIMITER 6KA / CONTACTOR 10KA
Fault Code Number: 126
- do a check and repair of the wiring between ECB (59KD) AB/E3 and the BACKUP START CONTACTOR (10KA) A/G ASM 494201 ESPM 2052210 ESPM 2053210.
B. Do the test given in Para. 3.