Fan Air Valve of the Engine 1 Blocked in the Open Position

TASK 36-11-00-810-849-A
Fan Air Valve of the Engine 1 Blocked in the Open Position

1. Possible Causes

THERMOSTAT-FAN AIR VALVE CTL [7170HM]
SENSOR-EXCHANGER OUT TEMP, ENG 1 [6HA1]
VALVE-FAN AIR, ENG1 [9HA1]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 36-11-17-000-001	Removal of the Heat-Exchanger Outlet-Temperature Sensor
AMM 36-11-17-400-001	Installation of the Heat-Exchanger Outlet-Temperature Sensor
AMM 36-11-43-000-001	Removal of the Fan-Air Valve Control-Thermostat
AMM 36-11-43-400-001	Installation of the Fan-Air Valve Control-Thermostat
AMM 36-11-54-000-001	Removal of the Fan Air Valve
AMM 36-11-54-400-001	Installation of the Fan Air Valve

3. Fault Confirmation
Subtask 36-11-00-710-142-A ** ON A/C NOT FOR ALL

A. Test
(1) Not applicable.

4. Fault Isolation
Subtask 36-11-00-810-097-B ** ON A/C NOT FOR ALL

A. If the fault symptom is identified by the maintenance message:
FAN AIR V 9HA1 OR THRM CTL 7170HM1
(1) Replace the THERMOSTAT-FAN AIR VALVE CTL [7170HM] AMM 36-11-43-000-001 and AMM 36-11-43-400-001.
(2) If the fault continues:

on the AIR control panel 30VU, with the APU BLEED pushbutton switch pushed and the X-BLEED selector switch set to OPEN, do a check on the ECAM BLEED page, of the temperature indication of the two systems.

(a) If the temperature indication of the defective system is 20 deg.C (68 deg.F) less than that of the opposite system:

replace the SENSOR-EXCHANGER OUT TEMP, ENG 1 [6HA1] AMM 36-11-17-000-001 and AMM 36-11-17-400-001.

(3) If the fault continues:

replace the VALVE-FAN AIR, ENG1 [9HA1] AMM 36-11-54-000-001 and AMM 36-11-54-400-001.

Subtask 36-11-00-810-097-C ** ON A/C NOT FOR ALL

A. If the fault symptom is identified by the maintenance message:
THRM 7170HM1 OR FAN AIR-V 9HA1

replace the THERMOSTAT-FAN AIR VALVE CTL [7170HM] AMM 36-11-43-000-001 and AMM 36-11-43-400-001.

(1) If the fault continues:

on the AIR COND panel 30VU, with the APU BLEED pushbutton switch pushed and the X-BLEED selector switch set to OPEN, do a check of the temperature indication of the two systems on the ECAM BLEED page.

(a) If the temperature indication of the defective system is 20 deg.C (68 deg.F) less than that of the opposite system:

replace the SENSOR-EXCHANGER OUT TEMP, ENG 1 [6HA1] AMM 36-11-17-000-001 and AMM 36-11-17-400-001.

1 If the fault continues:

replace the VALVE-FAN AIR, ENG1 [9HA1] AMM 36-11-54-000-001 and AMM 36-11-54-400-001.

Subtask 36-11-00-710-143-A ** ON A/C NOT FOR ALL

B. After the subsequent flight, make sure that the fault does not continue.

[Rev.8 from Aug 2018] 2026.04.04 04:33:45 UTC