- the SENSOR-DUCT OVHT TEMPERATURE,FWD CABIN (19HK) to the ZC (8HK) and,
- the SENSOR-DUCT OVHT TEMPERATURE,FWD CABIN (19HK) to ground.
(4) If the fault continues:
- replace the VALVE-TRIM AIR,FWD CABIN (12HK) (Ref. AMM TASK 21-63-51-000-001) and (Ref. AMM TASK 21-63-51-400-001).
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(5) If the fault continues:
- do a check and repair the wiring (Ref. ASM 21-63/02) from:
- the VALVE-TRIM AIR,FWD CABIN (12HK) to the ZC (8HK) and,
- the VALVE-TRIM AIR,FWD CABIN (12HK) to ground.
(6) If the fault continues:
- replace the VALVE-PRESSURE REGULATING (14HK) (Ref. AMM TASK 21-63-52-000-001) and (Ref. AMM TASK 21-63-52-400-001).
(7) If the fault continues:
- do a check and repair the wiring (Ref. ASM 21-63/03) from:
- the VALVE-PRESSURE REGULATING (14HK) to the ZC (8HK) and,
- the VALVE-PRESSURE REGULATING (14HK) to ground.
(8) If the fault continues:
- replace the CONT-ZONE TEMPERATURE (8HK) (Ref. AMM TASK 21-63-34-000-001) and (Ref. AMM TASK 21-63-34-400-001).
B. If the test gives the maintenance message TEST OK, but on the ECAM upper DU the warning COND FWD CAB DUCT OVHT comes on:
- do a check of the FWD cabin-duct inlet temperature on the ECAM COND page.
(1) If the temperature is below 70 Deg.C:
- replace the SENSOR-DUCT OVHT TEMPERATURE,FWD CABIN (19HK) (Ref. AMM TASK 21-63-18-000-001) and (Ref. AMM TASK 21-63-18-400-001).
C. Do the test as given in the Para. 3.A.
5. Close-up
________
A. Put the aircraft back to its initial configuration.
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TASK 21-63-00-810-825
AFT Cabin Duct Overheat Detection
1. Possible Causes
_______________
- SENSOR-DUCT TEMPERATURE,AFT CABIN (17HK)
- SENSOR-DUCT TEMPERATURE,AFT CABIN (20HK)
- VALVE-TRIM AIR,AFT CABIN (13HK)
- VALVE-PRESSURE REGULATING (14HK)
- CONT-ZONE TEMPERATURE (8HK)
- wiring
- SENSOR-DUCT OVHT TEMPERATURE,AFT CABIN (20HK)
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 AMM 21-63-15-000-001 Removal of the Duct Temperature Sensors 15HK, 16HK and 17HK AMM 21-63-15-400-001 Installation of the Duct Temperature Sensors 15HK, 16HK and 17HK AMM 21-63-18-000-001 Removal of the Duct Overheat-Temperature Sensors 18HK, 19HK and 20HK AMM 21-63-18-400-001 Installation of the Duct Overheat-Temperature Sensors
18HK, 19HK and 20HK AMM 21-63-34-000-001 Removal of the Zone Controller (8HK) AMM 21-63-34-400-001 Installation of the Zone Controller (8HK) AMM 21-63-51-000-001 Removal of the Trim Air Valve (11HK,12HK,13HK) AMM 21-63-51-400-001 Installation of the Trim Air Valve (11HK,12HK,13HK) AMM 21-63-52-000-001 Removal of the Pressure Regulating Valve 14HK AMM 21-63-52-400-001 Installation of the Pressure Regulating Valve 14HK ASM 21-63/03 ASM 21-63/03
3. Fault Confirmation
__________________
A. Do the operational test of the cockpit and cabin temperature-control system with CFDS/MCDU (Ref. AMM TASK 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.
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4. Fault Isolation
_______________
A. If the test confirms the fault:
- 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 (Ref. ASM 21-63/03):
Temp (Deg.C) OHMS ---------------------------
+ 10 18820 +/- 5 %
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本文链接地址：A320 Trouble Shooting Manual 排故手册 AIR CONDITIONING 空调2(119)
