COCKPIT AND CABIN TEMPERATURE CONTROL - TASK SUPPORTING DATA

** ON A/C NOT FOR ALL

1. Temperature Control

Cockpit and Cabin Temperature Control - Block Diagram ** ON A/C NOT FOR ALL

A. CFDS Fault Information
Additional information about a failed component is available in the MCDU CAB TEMP CONT menu.
The related LAST LEG REPORT page shows:

the date and time when the fault occured,
the ATA number of the component,
the FIN of the component.

B. Troubleshooting Data
If a fault is detected during the ZC initiated test, a fault code for shop maintenance is given in addition to the related CFDS message.
The subsequent table shows the possible fault codes with their attached fault origns:
The trouble shooting data give additional information for shop maintenance.

.-------.--------------------------------------.------------------------------.

! FAULT ! FAULT ORIGIN ! CFDS MESSAGE !

! CODE ! ! !

!-------!--------------------------------------!------------------------------!

! 10 ! TAV CKPT MOTOR, MECHANIC ! TRIM VALVE CKPT !

!-------!--------------------------------------!------------------------------!

! 11 ! TAV FWD CAB MOTOR, MECHANIC ! TRIM VALVE FWD CAB !

!-------!--------------------------------------!------------------------------!

! 12 ! TAV AFT CAB MOTOR, MECHANIC ! TRIM VALVE AFT CAB !

!-------!--------------------------------------!------------------------------!

! 13 ! TAPRV FAILED OPEN/CLOSED, SOLENOID ! TRIM AIR PRESS VALVE !

! ! REDUCED ! !

!-------!--------------------------------------!------------------------------!

! 14 ! CKPT TEMPERATURE SENSOR ! TEMP SENSOR CKPT !

!-------!--------------------------------------!------------------------------!

! 15 ! FWD CAB TEMPERATURE SENSOR ! TEMP SENSOR FWD CAB !

!-------!--------------------------------------!------------------------------!

! 16 ! AFT CAB TEMPERATURE SENSOR ! TEMP SENSOR AFT CAB !

!-------!--------------------------------------!------------------------------!

! 17 ! CKPT DUCT TEMPERATURE SENSOR ! TEMP SENSOR CKPT DUCT !

!-------!--------------------------------------!------------------------------!

! 18 ! FWD CAB DUCT TEMPERATURE SENSOR ! TEMP SENSOR FWD CAB DUCT !

!-------!--------------------------------------!------------------------------!

! 19 ! AFT CAB DUCT TEMPERATURE SENSOR ! TEMP SENSOR AFT CAB DUCT !

!-------!--------------------------------------!------------------------------!

! 1D ! L/H MIXER MANIFOLD TEMP SENSOR ! TEMP SENSOR L/H MIXER !

!-------!--------------------------------------!------------------------------!

! 1E ! R/H MIXER MANIFOLD TEMP SENSOR ! TEMP SENSOR R/H MIXER !

!-------!--------------------------------------!------------------------------!

! 1F ! CKPT TEMPERATURE SELECTOR ! CKPT TEMP SELECTOR !

!-------!--------------------------------------!------------------------------!

! 20 ! FWD CAB TEMPERATURE SELECTOR ! FWD CAB TEMP SELECTOR !

!-------!--------------------------------------!------------------------------!

! 21 ! AFT CAB TEMPERATURE SELECTOR ! AFT CAB TEMP SELECTOR !

!-------!--------------------------------------!------------------------------!

! 22 ! G & T FAN FAULT/OFF ! GALY & TOIL FAN OR SPLY !

!-------!--------------------------------------!------------------------------!

! 23 ! HIGH HOT AIR PRESSURE ! TRIM AIR PRESS VALVE OR !

! ! ! PRESS SWITCH !

!-------!--------------------------------------!------------------------------!

! 24 ! FLOW SELECTOR ! FLOW SEL !

!-------!--------------------------------------!------------------------------!

! 2E ! ZC 429 RCV EXT ! NO DATA FROM CFDS !

!-------!--------------------------------------!------------------------------!

! 2F ! ZC 429 RCV EXT ! NO DATA FROM ADIRS !

!-------!--------------------------------------!------------------------------!

! 30 ! ZC RAM, EPROM, CPU, A/D CONVERTER, ! ZONE CONT !

! ! DISCRETE INPUTS, DISCRETE OUTPUTS, ! !

! ! 429 XTR INT, 429 XTR EXT, PWR SPLY, ! !

! ! TAV DRIVE OUTPUTS, 429 RCV INT, ! !

! ! WATCHDOG BACKUP SWITCHING ! !

!-------!--------------------------------------!------------------------------!

! 31 ! WRG SHORT CIRCUIT ! ZONE CONT OR SENSOR !

! ! ! SUPPLY SHORT !

!-------!--------------------------------------!------------------------------!

! 34 ! TAPRV FAILED OPEN ! ZONE CONT !

!-------!--------------------------------------!------------------------------!

! 38 ! TAPRV DRIVE ! ZONE CONT !

!-------!--------------------------------------!------------------------------!

! 39 ! RECIRCULATION FAN 1 ! RECIRC FAN 1 OR SPLY !

!-------!--------------------------------------!------------------------------!

! 3A ! RECIRCULATION FAN 2 ! RECIRC FAN 2 OR SPLY !

!-------!--------------------------------------!------------------------------!

! 3B ! FWD CARGO VENTILATION ! FWD CARGO FAN OR SPLY !

!-------!--------------------------------------!------------------------------!

! 3C ! AFT CARGO VENTILATION ! AFT CARGO FAN OR SPLY !

!-------!--------------------------------------!------------------------------!

! 3D ! LH ANTI ICE SYSTEM ! WAI FILTER OR VALVE 9DL !

!-------!--------------------------------------!------------------------------!

! 3E ! RH ANTI ICE SYSTEM ! WAI FILTER OR VALVE 10DL !

!-------!--------------------------------------!------------------------------!

! 3F ! LH ANTI ICE SYSTEM ! NO BLEED AIR ENG 1 !

!-------!--------------------------------------!------------------------------!

! 40 ! RH ANTI ICE SYSTEM ! NO BLEED AIR ENG 2 !

!-------!--------------------------------------!------------------------------!

! 41 ! MIXER FLAP DISAGREE ! MIXER FLAP DRIVE OR SPLY !

!-------!--------------------------------------!------------------------------!

! 43 ! P 1 COMPRESSOR TEMP SENSOR / P 1 ! PC1 COMP TEMP/OVHT SENSOR !

! ! COMPRESSOR OVHT SENSOR DISAGREE ! DISAGREE !

!-------!--------------------------------------!------------------------------!

! 44 ! P 2 COMPRESSOR TEMP SENSOR / P 2 ! PC2 COMP TEMP/OVHT SENSOR !

! ! COMPRESSOR OVHT SENSOR DISAGREE ! DISAGREE !

!-------!--------------------------------------!------------------------------!

! 49 ! PC 1 MAIN DC SUPPLY ! NO 28V ON PACK 1 MAIN !

!-------!--------------------------------------!------------------------------!

! 4A ! PC 2 MAIN DC SUPPLY ! NO 28V ON PACK 2 MAIN !

!-------!--------------------------------------!------------------------------!

! 4B ! PC 1 SECD DC SUPPLY ! NO 28V ON PACK 1 SECD !

!-------!--------------------------------------!------------------------------!

! 4C ! PC 2 SECD DC SUPPLY ! NO 28V ON PACK 2 SECD !

!-------!--------------------------------------!------------------------------!

! 4E ! ZC MAIN DC SUPPLY ! NO 28V ON ZONE MAIN !

!-------!--------------------------------------!------------------------------!

! 4F ! ZC SECD DC SUPPLY ! NO 28V ON ZONE SECD !

!-------!--------------------------------------!------------------------------!

! 52 ! PACK 1 PRESSURE INLET SENSOR ! P1 PRESS INL SENSOR !

!-------!--------------------------------------!------------------------------!

! 53 ! PACK 2 PRESSURE INLET SENSOR ! P2 PRESS INL SENSOR !

!-------!--------------------------------------!------------------------------!

! 54 ! PACK 1 DISCHARGE OVERHEAT ! P1 AIR CYCLE MACH CHECK !

!-------!--------------------------------------!------------------------------!

! 55 ! PACK 2 DISCHARGE OVERHEAT ! P2 AIR CYCLE MACH CHECK !

!-------!--------------------------------------!------------------------------!

! 56 ! PACK 1 COMPRESSOR TEMP SENSOR ! P1 COMP TEMP SENSOR !

!-------!--------------------------------------!------------------------------!

! 57 ! PACK 2 COMPRESSOR TEMP SENSOR ! P2 COMP TEMP SENSOR !

!-------!--------------------------------------!------------------------------!

! 58 ! PACK 1 COMPRESSOR OVERHEAT SENSOR ! P1 COMP OVHT SENSOR !

!-------!--------------------------------------!------------------------------!

! 59 ! PACK 2 COMPRESSOR OVERHEAT SENSOR ! P2 COMP OVHT SENSOR !

!-------!--------------------------------------!------------------------------!

! 5A ! PACK 1 OUTLET TEMPERATURE SENSOR ! P1 OUTLET TEMP SENSOR !

!-------!--------------------------------------!------------------------------!

! 5B ! PACK 2 OUTLET TEMPERATURE SENSOR ! P2 OUTLET TEMP SENSOR !

!-------!--------------------------------------!------------------------------!

! 5C ! PACK 1 WATER EXTRACTOR TEMP SENSOR ! P1 WATER EX TEMP SENSOR !

!-------!--------------------------------------!------------------------------!

! 5D ! PACK 2 WATER EXTRACTOR TEMP SENSOR ! P2 WATER EX TEMP SENSOR !

!-------!--------------------------------------!------------------------------!

! 5E ! PACK 1 RAI MOTOR, POT, MECHANIC, ! P1 RAM AIR IN ACTUATOR !

! ! LIMIT SWITCH ! !

!-------!--------------------------------------!------------------------------!

! 5F ! PACK 2 RAI MOTOR, POT, MECHANIC, ! P2 RAM AIR IN ACTUATOR !

! ! LIMIT SWITCH ! !

!-------!--------------------------------------!------------------------------!

! 62 ! PACK 1 BPV MOTOR, POT, MECHANIC, ! P1 BYPASS VALVE !

! ! LIMIT SWITCH ! !

!-------!--------------------------------------!------------------------------!

! 63 ! PACK 2 BPV MOTOR, POT, MECHANIC, ! P2 BYPASS VALVE !

! ! LIMIT SWITCH ! !

!-------!--------------------------------------!------------------------------!

! 64 ! PACK 1 FCV MOTOR, POT, MECHANIC ! P1 FLOW CONT VALVE !

!-------!--------------------------------------!------------------------------!

! 65 ! PACK 2 FCV MOTOR, POT, MECHANIC ! P2 FLOW CONT VALVE !

!-------!--------------------------------------!------------------------------!

! 66 ! PACK 1 AIV PERMANENT OPEN/CLOSED ! P1 CONT OR ANTI ICE VALVE !

!-------!--------------------------------------!------------------------------!

! 67 ! PACK 2 AIV PERMANENT OPEN/CLOSED ! P2 CONT OR ANTI ICE VALVE !

!-------!--------------------------------------!------------------------------!

! 68 ! PACK 1 PRESSURE (FLOW) SENSOR ! P1 FLOW SENSOR !

!-------!--------------------------------------!------------------------------!

! 69 ! PACK 2 PRESSURE (FLOW) SENSOR ! P2 FLOW SENSOR !

!-------!--------------------------------------!------------------------------!

! 6A ! PC 1 RAM, EPROM, CPU, A/D CONVERTER, ! P1 CONT !

! ! DISCRETE INPUTS, 429 RCV, BPV DRIVE ! !

! ! OUTPUT ! !

!-------!--------------------------------------!------------------------------!

! 6B ! PC 2 RAM, EPROM, CPU, A/D CONVERTER, ! P2 CONT !

! ! DISCRETE INPUTS, 429 RCV, BPV DRIVE ! !

! ! OUTPUT ! !

!-------!--------------------------------------!------------------------------!

! 6C ! ZC AC SUPPLY ! AC SUPPLY ZONE CONT !

!-------!--------------------------------------!------------------------------!

! 6D ! PC 1 NO TEST ! NO TEST RESULT RECEPTION !

! ! ! FROM P1 CONT !

!-------!--------------------------------------!------------------------------!

! 6E ! PC 2 NO TEST ! NO TEST RESULT RECEPTION !

! ! ! FROM P2 CONT !

!-------!--------------------------------------!------------------------------!

! 6F ! PRESSURE SWITCH OUTPUT ! PRESS SWITCH !

!-------!--------------------------------------!------------------------------!

! 7B ! ZC 429 XTR ! CHECK BUS ZONE CONT TO !

! ! ! P1 CONT + P2 CONT !

!-------!--------------------------------------!------------------------------!

! 7C ! ZC DC SUPPLY ! DC SUPPLY ZONE CONT !

!-------!--------------------------------------!------------------------------!

! 7D ! PC 1 DC SUPPLY ! DC SUPPLY P1 CONT !

!-------!--------------------------------------!------------------------------!

! 7E ! PC 2 DC SUPPLY ! DC SUPPLY P2 CONT !

!-------!--------------------------------------!------------------------------!

! 76 ! RECIRCULATION FAN 1 AND 2 ! RECIRC FAN 1 AND 2 OR SPLY !

!-------!--------------------------------------!------------------------------!

! 77 ! L/H AND R/H MIXER UNIT TEMP SENSORS ! TEMP SENSOR L/H AND R/H MIXER!

!_______!______________________________________!______________________________!

[Rev.8 from Aug 2018] 2026.04.04 04:25:05 UTC