W DOC AIRBUS | TSM A320F

Zone Temperature Control Problems in one Zone

TASK 21-63-00-810-822-A
Zone Temperature Control Problems in one Zone

1. Possible Causes
  • TEMP SENSOR CKPT DUCT [15HK]
  • SENSOR-TEMPERATURE, COCKPIT [21HK]
  • CKPT TEMP SELECTOR [27HK]
  • ZONE CONTROLLER [8HK]
  • CONT-AIR COND SYSTEM 1 [47HH]
  • CONT-AIR COND SYSTEM 2 [57HH]
  • TEMP SENSOR FWD CAB DUCT [16HK]
  • TEMP SENSOR FWD CAB [22HK]
  • FWD CAB TEMP SELECTOR [28HK]
  • TEMP SENSOR AFT CAB DUCT [17HK]
  • TEMP SENSOR AFT CAB [23HK]
  • AFT CAB TEMP SELECTOR [29HK]
  • bellows between the mixer-unit and the air-pack
2. Job Set-up Information
 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 216303
AMM 21-63-11-000-001
Removal of the Temperature Selector
AMM 21-63-11-400-001
Installation of the Temperature Selector
CMM 216312
AMM 21-63-15-000-001
Removal of the Duct Temperature Sensors
AMM 21-63-15-400-001
Installation of the Duct Temperature Sensors
AMM 21-63-17-000-001
Removal of the Temperature Sensors
AMM 21-63-17-210-001
Detailed Visual Inspection of the Cockpit (Cabin) Temperature Sensor 21HK (22HK, 23HK) and Ducting for Contamination
AMM 21-63-17-400-001
Installation of the Temperature Sensors
AMM 21-63-34-000-001
Removal of the Zone Controller
AMM 21-63-34-400-001
Installation of the Zone Controller
3. Fault Confirmation
Subtask 21-63-00-710-093-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 21-63-00-710-093-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 21-63-00-810-087-A
A. If the test gives a different maintenance message, do the related trouble shooting procedure.
Subtask 21-63-00-810-088-A ** ON A/C NOT FOR ALL
B. If the test confirms the fault for the cockpit zone, with the pushbutton switch HOT AIR, which is installed on the panel 30VU, set to on (with the FAULT and OFF legends off) or OFF:
  • do a check that the resistance of the cockpit-duct temperature sensor (15HK) measured between connector A/E and A/F and connector A/C and A/D is in these limits ASM 216303:
    -------------------------------
    !Temp (Deg.C) !OHMS !
    -------------------------------
    !+ 10 !18820 +/- 5 % !
    !-------------!---------------!
    !+ 18 !13340 +/- 5 % !
    !-------------!---------------!
    !+ 25 !10000 +/- 5 % !
    !-------------!---------------!
    !+ 30 ! 8197 +/- 5 % !
    !-------------!---------------!
    !+ 40 ! 5598 +/- 5 % !
    !-------------!---------------!
    !+ 50 ! 3903 +/- 5 % !
    -------------------------------

   (1) If the resistance values are out of the specified limits:
   (2) If the fault continues:
  • do a check that the cockpit temperature sensor (21HK), housing, ducts and flexible hoses are free from contamination, are not damaged and that the sense line has no leakage AMM 21-63-17-210-001.
   (3) If the fault continues:
  • do a check that the resistance of the cockpit temperature sensor (21HK) measured between connector A/A and A/B and connector A/E and A/D is in these limits ASM 216303:
    -------------------------------
    !Temp (Deg.C) ! OHMS !
    -------------------------------
    !+ 10 ! 18820 +/- 5 % !
    !-------------!---------------!
    !+ 18 ! 13340 +/- 5 % !
    !-------------!---------------!
    !+ 25 ! 10000 +/- 5 % !
    !-------------!---------------!
    !+ 30 ! 8197 +/- 5 % !
    !-------------!---------------!
    !+ 40 ! 5598 +/- 5 % !
    !-------------!---------------!
    !+ 50 ! 3903 +/- 5 % !
    -------------------------------

     (a) If the resistance values are out of the specified limits:
   (4) If the fault continues:
  • do a potentiometer test of the cockpit temperature selector (27HK) CMM 216312.
     (a) If the test is not OK:
   (5) If the fault continues:
Subtask 21-63-00-810-089-A ** ON A/C NOT FOR ALL
C. If the test confirms the fault for the FWD cabin zone, with the pushbutton switch HOT AIR, which is installed on the panel 30VU, set to on (with the FAULT and OFF legends off) or OFF:
  • do a check that the resistance of the FWD cabin-duct temperature sensor (16HK) measured between connector A/E and A/F and connector A/C and A/D is in these limits ASM 216303:
Temp (Deg.C)
OHMS
+ 10
18820 +/- 5 %
+ 18
13340 +/- 5 %
+ 25
10000 +/- 5 %
+ 30
8197 +/- 5 %
+ 40
5598 +/- 5 %
+ 50
3903 +/- 5 %
   (1) If the resistance values are out of the specified limits:
   (2) If the fault continues:
  • do a check that the FWD cabin-temperature sensor (22HK), housing, ducts and flexible hoses are free from contamination, are not damaged and the sense line has no leakage AMM 21-63-17-210-001.
   (3) If the fault continues:
  • do a check that the resistance of the FWD cabin-temperature sensor (22HK) measured between connector A/A and A/B and connector A/E and A/D is in these limits ASM 216303:
Temp (Deg.C)
OHMS
+ 10
18820 +/- 5 %
+ 18
13340 +/- 5 %
+ 25
10000 +/- 5 %
+ 30
8197 +/- 5 %
+ 40
5598 +/- 5 %
+ 50
3903 +/- 5 %
     (a) If the resistance values are out of the specified limits:
   (4) If the fault continues:
  • do a potentiometer test of the FWD cabin-temperature selector (28HK) CMM 216312.
     (a) If the test is not OK:
   (5) If the fault continues:
Subtask 21-63-00-810-090-A ** ON A/C NOT FOR ALL
D. If the test confirms the fault for the AFT cabin zone, with the pushbutton switch HOT AIR, which is installed on the panel 30VU, set to on (with FAULT and OFF legends off) or OFF:
  • do a check that the resistance of the AFT cabin-duct temperature sensor (17HK) measured between connector A/E and A/F and connector A/C and A/D is in these limits ASM 216303:
Temp (Deg.C)
OHMS
+ 10
18820 +/- 5 %
+ 18
13340 +/- 5 %
+ 25
10000 +/- 5 %
+ 30
8197 +/- 5 %
+ 40
5598 +/- 5 %
+ 50
3903 +/- 5 %
   (1) If the resistance values are out of the specified limits:
   (2) If the fault continues:
  • do a check that the AFT cabin-temperature sensor (23HK), housing, ducts and flexible hoses are free from contamination, are not damaged and that the sense line has no leakage AMM 21-63-17-210-001.
   (3) If the fault continues:
  • do a check that the resistance of the AFT cabin-temperature sensor (23HK) measured between connector A/A and A/B and connector A/E and A/D is in these limits ASM 216303:
Temp (Deg.C)
OHMS
+ 10
18820 +/- 5 %
+ 18
13340 +/- 5 %
+ 25
10000 +/- 5 %
+ 30
8197 +/- 5 %
+ 40
5598 +/- 5 %
+ 50
3903 +/- 5 %
     (a) If the resistance values are out of the specified limits:
   (4) If the fault continues:
  • do a potentiometer test of the AFT cabin-temperature selector (29HK) CMM 216312.
     (a) If the test is not OK:
   (5) If the fault continues:
Subtask 21-63-00-810-088-B ** ON A/C NOT FOR ALL
E. If the test confirms the fault for the cockpit zone, with the pushbutton switch HOT AIR, which is installed on the panel 30VU, set to on (with the FAULT and OFF legends off) or OFF:
  • do a check that the resistance of the cockpit-duct temperature sensor (15HK) measured between connector A/E and A/F and connector A/C and A/D is in these limits ASM 216303:
Temp (Deg.C)
OHMS
+ 10
18820 +/- 5 %
+ 18
13340 +/- 5 %
+ 25
10000 +/- 5 %
+ 30
8197 +/- 5 %
+ 40
5598 +/- 5 %
+ 50
3903 +/- 5 %
   (1) If the resistance values are out of the specified limits:
   (2) If the fault continues:
  • do a check that the cockpit temperature sensor (21HK), housing, ducts and flexible hoses are free from contamination, are not damaged and that the sense line has no leakage AMM 21-63-17-210-001.
   (3) If the fault continues:
  • do a check that the resistance of the cockpit temperature sensor (21HK) measured between connector A/A and A/B and connector A/E and A/D is in these limits ASM 216303:
Temp (Deg.C)
OHMS
+ 10
18820 +/- 5 %
+ 18
13340 +/- 5 %
+ 25
10000 +/- 5 %
+ 30
8197 +/- 5 %
+ 40
5598 +/- 5 %
+ 50
3903 +/- 5 %
     (a) If the resistance values are out of the specified limits:
   (4) If the fault continues:
  • do a potentiometer test of the cockpit temperature selector (27HK) CMM 216312.
     (a) If the test is not OK:
   (5) If the fault continues:
   (6) If the fault continues:
Subtask 21-63-00-810-089-B ** ON A/C NOT FOR ALL
F. If the test confirms the fault for the FWD cabin zone, with the pushbutton switch HOT AIR, which is installed on the panel 30VU, set to on (with the FAULT and OFF legends off) or OFF:
  • do a check that the resistance of the FWD cabin-duct temperature sensor (16HK) measured between connector A/E and A/F and connector A/C and A/D is in these limits ASM 216303:
Temp (Deg.C)
OHMS
+ 10
18820 +/- 5 %
+ 18
13340 +/- 5 %
+ 25
10000 +/- 5 %
+ 30
8197 +/- 5 %
+ 40
5598 +/- 5 %
+ 50
3903 +/- 5 %
   (1) If the resistance values are out of the specified limits:
   (2) If the fault continues:
  • do a check that the FWD cabin-temperature sensor (22HK), housing, ducts and flexible hoses are free from contamination, are not damaged and the sense line has no leakage AMM 21-63-17-210-001.
   (3) If the fault continues:
  • do a check that the resistance of the FWD cabin-temperature sensor (22HK) measured between connector A/A and A/B and connector A/E and A/D is in these limits ASM 216303:
Temp (Deg.C)
OHMS
+ 10
18820 +/- 5 %
+ 18
13340 +/- 5 %
+ 25
10000 +/- 5 %
+ 30
8197 +/- 5 %
+ 40
5598 +/- 5 %
+ 50
3903 +/- 5 %
     (a) If the resistance values are out of the specified limits:
   (4) If the fault continues:
  • do a potentiometer test of the FWD cabin-temperature selector (28HK) CMM 216312.
     (a) If the test is not OK:
   (5) If the fault continues:
   (6) If the fault continues:
Subtask 21-63-00-810-090-B ** ON A/C NOT FOR ALL
G. If the test confirms the fault for the AFT cabin zone, with the pushbutton switch HOT AIR, which is installed on the panel 30VU, set to on (with FAULT and OFF legends off) or OFF:
  • do a check that the resistance of the AFT cabin-duct temperature sensor (17HK) measured between connector A/E and A/F and connector A/C and A/D is in these limits ASM 216303:
Temp (Deg.C)
OHMS
+ 10
18820 +/- 5 %
+ 18
13340 +/- 5 %
+ 25
10000 +/- 5 %
+ 30
8197 +/- 5 %
+ 40
5598 +/- 5 %
+ 50
3903 +/- 5 %
   (1) If the resistance values are out of the specified limits:
   (2) If the fault continues:
  • do a check that the AFT cabin-temperature sensor (23HK), housing, ducts and flexible hoses are free from contamination, are not damaged and that the sense line has no leakage AMM 21-63-17-210-001.
   (3) If the fault continues:
  • do a check that the resistance of the AFT cabin-temperature sensor (23HK) measured between connector A/A and A/B and connector A/E and A/D is in these limits ASM 216303:
Temp (Deg.C)
OHMS
+ 10
18820 +/- 5 %
+ 18
13340 +/- 5 %
+ 25
10000 +/- 5 %
+ 30
8197 +/- 5 %
+ 40
5598 +/- 5 %
+ 50
3903 +/- 5 %
     (a) If the resistance values are out of the specified limits:
   (4) If the fault continues:
  • do a potentiometer test of the AFT cabin-temperature selector (29HK) CMM 216312.
     (a) If the test is not OK:
   (5) If the fault continues:
   (6) If the fault continues:
Subtask 21-63-00-710-094-A
H. Do the test as given in the Para. 3.A.
  • Make sure that the belly-fairing blowout-panel is closed:
  • If the belly-fairing blowout-panel is open, do a check for damage of the bellows between the mixer-unit and the air-pack .
5. Close-up
Subtask 21-63-00-860-071-A
A. Put the aircraft back to its initial configuration.
[Rev.8 from Aug 2018] 2026.04.04 04:25:02 UTC
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