DOC AIRBUS | TSM A320FMixer-Unit Temperature Sensors Fault
TASK 21-63-00-810-835-A
Mixer-Unit Temperature Sensors Fault
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 21-63-00-710-117-A
Subtask 21-63-00-810-121-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:25:03 UTC
Mixer-Unit Temperature Sensors Fault
1. Possible Causes
- TEMP SENSOR LH MIXER [24HK]
- TEMP SENSOR RH MIXER [25HK]
- wiring
- ZONE CONTROLLER [8HK]
- CONT-AIR COND SYSTEM 1 [47HH]
- CONT-AIR COND SYSTEM 2 [57HH]
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 21-61-34-000-002 | Removal of the Air-Conditioning System Controller |
| AMM 21-61-34-400-002 | Installation of the Air-Conditioning System Controller |
| AMM 21-63-00-710-004 | Operational Test of the Cockpit and Cabin Temperature Control with CFDS/MCDU |
| ASM 216302 | |
| ASM 216303 | |
| AMM 21-63-16-000-001 | Removal of the Mixer Temperature Sensor |
| AMM 21-63-16-400-001 | Installation of the Mixer Temperature Sensor |
| AMM 21-63-34-000-001 | Removal of the Zone Controller |
| AMM 21-63-34-400-001 | Installation of the Zone Controller |
Subtask 21-63-00-710-117-A
A. Do the operational test of the cockpit and cabin temperature-control system with CFDS/MCDU AMM 21-63-00-710-004.
4. Fault IsolationSubtask 21-63-00-810-121-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message TEMP SENSOR L/H AND R/H MIXER:
Subtask 21-63-00-810-121-B ** ON A/C NOT FOR ALL - replace the TEMP SENSOR LH MIXER [24HK] (referred to as SENSOR (24HK)) AMM 21-63-16-000-001 and AMM 21-63-16-400-001,
- replace the TEMP SENSOR RH MIXER [25HK] (referred to as SENSOR (25HK)) AMM 21-63-16-000-001 and AMM 21-63-16-400-001.
- do a check and repair the wiring ASM 216303 between:
SENSOR (24HK) connector A/E and ZC (8HK) connector AA/8C,
SENSOR (24HK) connector A/F and ZC (8HK) connector AA/8D,
SENSOR (24HK) connector A/C and ZC (8HK) connector AA/8H,
SENSOR (24HK) connector A/D and ZC (8HK) connector AA/8G,
SENSOR (24HK) connector A/A and GND,
SENSOR (25HK) connector A/E and ZC (8HK) connector AA/10C,
SENSOR (25HK) connector A/F and ZC (8HK) connector AA/10D,
SENSOR (25HK) connector A/C and ZC (8HK) connector AA/10H,
SENSOR (25HK) connector A/D and ZC (8HK) connector AA/10G,
SENSOR (25HK) connector A/A and GND.
- replace the ZONE CONTROLLER [8HK] AMM 21-63-34-000-001 and AMM 21-63-34-400-001.
A. If the test gives the maintenance message TEMP SENSOR L/H AND R/H MIXER:
Subtask 21-63-00-710-118-A - replace the TEMP SENSOR LH MIXER [24HK] (referred to as SENSOR (24HK)) AMM 21-63-16-000-001 and AMM 21-63-16-400-001,
- replace the TEMP SENSOR RH MIXER [25HK] (referred to as SENSOR (25HK)) AMM 21-63-16-000-001 and AMM 21-63-16-400-001.
- do a check and repair the wiring ASM 216303 between:
SENSOR (24HK) connector A/E and ACSC1 (47HH) connector AA/3A,
SENSOR (24HK) connector A/F and ACSC1 (47HH) connector AA/3B,
SENSOR (24HK) connector A/C and ACSC1 (47HH) connector AA/3K,
SENSOR (24HK) connector A/D and ACSC1 (47HH) connector AA/3J,
SENSOR (24HK) connector A/A and GND.
- replace the CONT-AIR COND SYSTEM 1 [47HH] AMM 21-61-34-000-002 and AMM 21-61-34-400-002.
- do a check and repair the wiring ASM 216302 between:
SENSOR (25HK) connector A/E and ACSC2 (57HH) connector AA/3K,
SENSOR (25HK) connector A/F and ACSC2 (57HH) connector AA/3J,
SENSOR (25HK) connector A/C and ACSC2 (57HH) connector AA/3A,
SENSOR (25HK) connector A/D and ACSC2 (57HH) connector AA/3B,
SENSOR (25HK) connector A/A and GND.
- replace the CONT-AIR COND SYSTEM 2 [57HH] AMM 21-61-34-000-002 and AMM 21-61-34-400-002.
B. Do the test as given in the Para. 3.A.