Operational Test of the Zone-Controller (Back Up Switching) via CFDS/MCDU

TASK 21-63-00-710-002-A
Operational Test of the Zone-Controller (Back Up Switching) via CFDS/MCDU

ZONE: 210

1. Reason for the Job
Refer to the MPD TASK: 216000-02
OPERATIONAL CHECK OF ZONE CONTROLLER (BACK UP SWITCHING) VIA CFDS/MCDU
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD

B. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure

3. Job Set-up
Subtask 21-63-00-865-057-A ** ON A/C NOT FOR ALL

A. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
122VU	AIR COND/ZONE TEMP CTL/28VDC/SYS2	4HK	V20
122VU	AIR COND/ZONE TEMP CTL/28VDC/SYS1	3HK	V19
122VU	AIR COND/ZONE TEMP CTL/115VAC/SYS2	2HK	V18
122VU	AIR COND/ZONE TEMP CTL/115VAC/SYS1	1HK	V17

Subtask 21-63-00-860-050-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).

4. Procedure
Subtask 21-63-00-710-053-A ** ON A/C NOT FOR ALL

A. Operational Test of the Zone-Controller (Back Up Switching) via CFDS/MCDU

ACTION	RESULT
1.On the panel 122VU: open the circuit breakers 1HK and 3HK.	On the ECAM upper display unit, (after apprx. 60 seconds): the warning message COND ZONE REGUL FAULT comes on.
2.On the ECAM control panel 11VU:
push one of the two CLR pushbutton switches.	the warning message goes off.
	On the ECAM lower display unit: the status message CAB ZONE AT FIXED TEMP comes on.
3.On the panel 122vu: close the circuit breakers 1HK and 3HK.	On the ECAM lower display unit: the status message goes off.
	On the ECAM upper display unit: the warning message COND HOT AIR FAULT may show.

5. Close-up
Subtask 21-63-00-860-051-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.02 06:11:42 UTC