W DOC AIRBUS | TSM A320F

FWD Cabin Temperature Selector Fault

TASK 21-63-00-810-818-A
FWD Cabin Temperature Selector Fault

1. Possible Causes
  • FWD CAB TEMP SELECTOR [28HK]
  • wiring
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 21-63-00-710-004
Operational Test of the Cockpit and Cabin Temperature Control with CFDS/MCDU
ASM 216302
AMM 21-63-11-000-001
Removal of the Temperature Selector
AMM 21-63-11-400-001
Installation of the Temperature Selector
3. Fault Confirmation
Subtask 21-63-00-710-085-A ** ON A/C NOT FOR ALL
A. Do the operational test of the cockpit and cabin temperature-control system with CFDS/MCDU AMM 21-63-00-710-004.
NOTE: If a fault is detected, the ZC gives a fault code for shop maintenance in addition to the related CFDS message(s). For detailed information see the applicable Page Block 301.
Subtask 21-63-00-710-085-B ** ON A/C NOT FOR ALL
A. Do the operational test of the cockpit and cabin temperature-control system with CFDS/MCDU AMM 21-63-00-710-004.
4. Fault Isolation
Subtask 21-63-00-810-074-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message FWD CAB TEMP SEL:
   (1) If the fault continues:
  • do a check and repair the wiring between:
    SELECTOR (28HK) connector A/2 and ZC (8HK) connector AA/13B,
    SELECTOR (28HK) connector A/3 and ZC (8HK) connector AA/14B,
    SELECTOR (28HK) connector A/4 and ZC (8HK) connector AA/15B,
    SELECTOR (28HK) connector A/7 and GND ASM 216302.
Subtask 21-63-00-810-074-B ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message FWD CAB TEMP SELECTOR(28HK):
   (1) If the fault continues:
  • do a check and repair the wiring ASM 216302 from:
  • the SELECTOR (28HK) to the ACSC2 (57HH) and,
  • the SELECTOR (28HK) to ground.
Subtask 21-63-00-710-086-A
B. Do the test as given in the Para. 3.A.
5. Close-up
Subtask 21-63-00-860-067-A
A. Put the aircraft back to its initial configuration.
[Rev.8 from Aug 2018] 2026.04.04 04:25:01 UTC
"WTRUIB" 2025