R  A. ICE ICE DETECTED  (amber) 
R 
R  - ENG 1 ANTI ICE----ON (cyan) 
R 
R  - ENG 2 ANTI ICE----ON (cyan) 
R 
R  or 
R 
R  SEVERE ICE DETECTED  (amber) 
R 
R  - WING ANTI ICE----ON (cyan) 
R 
R  - ENG SEL----IGN  (cyan) 
R 
R  If these messages are not cleared: 
R 
R  - A. ICE ICE DETECTED 
R 
R  or 
R 
R  - SEVERE ICE DETECTED 
R 
R  they will disappear 100 seconds after releasing the: 
R 
R  - ANTI ICE/ENG 1(2) pusbutton switch 
R 
R  or 
R 
R  - ANTI ICE/WING pushbutton switch. 
R  (2) When the engine 1(2) anti ice system is activated, the ENG A. ICE 
R  message is displayed in green on the MEMO item of the upper ECAM 
R  display unit. 
R 
R  This indication pulses when: 
R 
R  - the ANTI ICE/ENG 1(2) pushbutton switch has been selected ON, 
R 
R  - no icing conditions have been detected by the ice detectors for 130 
R  seconds, 
R 
R  - one ice detector FAULT signal at least, is correct.

R  (3) When the wing anti ice system is activated, these messages are 
R  displayed in green on the MEMO item of the upper ECAM display unit: 
R 
R  - ENG A. ICE 
R 
R  or 
R 
R  - WING A. ICE 
R 
R  These indications are pulse when: 
R 
R  - the ANTI ICE/WING pushbutton switch has been selected ON, 
R 
R  - no icing conditions have been detected by the ice detectors for 130 
R  seconds, 
R 
R  - one ice detector FAULT signal at least, is correct. 
R  8. BITE____ 
R 
R  (Ref. Fig. 012) 
R 
R  A. Description 
R 
R  The function of the BITE is to monitor the operation of the ice detector 
R  and the associated ouputs, analyse and confirm the faults and store them 
R  in the Non-Volatile Memory (NVM). The ice detector is a type 3 system. 
R 
R  The ice detector incorporates a built-in test feature with remote 
R  Initiated Test capability and provides a discrete output signal for 
R  remote display of an ice detector failure. 
R 
R  The ice detector BITE performs the following functions: 
R 
R  - acquisition of discrete input signals, 
R 
R  - communication with the SDAC 1(2) and FWC 1(2), 
R 
R  - memorization of failure in a NVM, 
R 
R  - tests. 
R 
R  The BITE is comprised of 3 basic functions: 
R 
R  - Power On Self Test 
R

R  BITE Test Procedure from the MCDU 
R  Figure 012
 1EFF :  401-499,  1  30-81-00 Page 28 
1  1  Aug 01/05
 1  1
 1CES  1

R  - Initiated Test 
R 
R  - Normal BITE. 
R 
R  These functions must check all the ice detector operations to allow an 
R  appropriate failure rate to be achieved for the overall system. 
R 
R  In addition to the Initiated Test, the built-in test (normal BITE) 
R  continuously monitors the internal components and functions for failure 
R  conditions during normal operation. 
R  B. Operation 
R 
R  Upon selection from the MCDU, the CFDIU displays the ICE & RAIN menu on 
R  the MCDU. 
R  C. Maintenance messages 
R 
R  NOTE : When the failure occurs on the ground, GND precedes the____ 
R  maintenance message. 
R 
R  -----------------------------------------------------------------------------
R  MAINTENANCE MESSAGES CLASS INT/EXT ATA REF 
R  -----------------------------------------------------------------------------
R  ICE DETECTOR1 2 I 30-81-00 
R  ICE DETECTOR2 2 I 30-81-00

 
　
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