Wing Anti-Ice (Wing) Circuit Breaker 2DL Tripped

TASK 30-11-00-810-809-A
Wing Anti-Ice (Wing) Circuit Breaker 2DL Tripped

WARNING: DO NOT TOUCH THE ANTI-ICE DUCTS UNTIL THEY ARE COOL. THE TEMPERATURE OF THE DUCTS STAYS HIGH FOR SOME TIME AFTER THE ENGINE STOPS.

1. Possible Causes

C/B-ANTI ICE/WING/CTL [2DL]
aircraft wiring
Diode 1160VD

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 24-41-00-861-002	Energize the Aircraft Electrical Circuits from the External Power
ASM 301101

3. Fault Confirmation
Subtask 30-11-00-710-056-A

A. Test
(1) Energize the aircraft electrical circuits AMM 24-41-00-861-002, if the FAULT indicator light on the P/BSW (3DL) comes on, or the C/B C/B-ANTI ICE/WING/CTL [2DL] trips, do the fault isolation.

4. Fault Isolation
Subtask 30-11-00-810-056-A

A. Procedure

CAUTION

Do not close the tripped C/B until a check for

a short circuit in the aircraft wiring has been

done. Damage to the aircraft systems can occur.

(1) Do a check and repair as neccessary the aircraft wiring ASM 301101 between:

the circuit breaker (2DL) and the P/BSW (3DL)
the P/BSW (3DL) and the relay (5DL)
the relay (9DL) and the valves (9DL) and (10DL)
the valve (9DL) and the valve (10DL)
the relay (5DL) and the relay (6DL)
the relay (6DL) and the relay (7DL).

NOTE: More information about the relays can be found in the Task Supporting Data (Ref. TSM 301100 P.BLOCK 301).

(a) Make sure that the circuit breaker (2DL) is closed ASM 301101.
(b) Do the test in Para. 3.A.

if the fault continues, do the next step.

(2) Do a check of the C/B C/B-ANTI ICE/WING/CTL [2DL] .
(a) If the check is unsatisfactory, replace the circuit breaker (2DL).
(b) Do the fault confirmation in Para. 3.A.

if the fault continues, do the next step.

(3) Do a check of the Diode 1160VD .
(a) If the check is unsatisfactory, replace the diode.
(b) Do the fault confirmation in Para. 3.A.

[Rev.8 from Aug 2018] 2026.04.04 04:39:59 UTC