W DOC AIRBUS | TSM A320F

Loss of the Heating System of the Right Fixed Window

TASK 30-42-00-810-817-A
Loss of the Heating System of the Right Fixed Window

1. Possible Causes
  • WINDOW-FIXED, R [7DG2]
  • WHC-2 [2DG2]
  • wiring from the WHC 2 (2DG2) to R fixed window (7DG2)
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 30-42-00-710-001
Operational Test of the Windshield Anti-Icing and Defogging
AMM 30-42-34-000-001
Removal of the Window Heat Computer (WHC)
AMM 30-42-34-400-001
Installation of the Window Heat Computer (WHC)
AMM 56-11-12-000-001
Removal of the Fixed Windows
AMM 56-11-12-400-002
Installation of the Fixed Windows
F R Fixed Window Electrical Connector with 2 sensors
F R Fixed Window Electrical Connector with 3 sensors
F Heating Coat Resistance Versus Temperature - Fixed Window - P/N SPSA320 series 2 (with 2 sensors)
F Heating Coat Resistance Versus Temperature - Fixed Window - P/N SPSA320 series 3 (with 3 sensors)
F Heating Coat Resistance Versus Temperature - Fixed Window - P/N 165313 series
F Heating Coat Resistance Versus Temperature - Fixed Window - P/N NH25216 series
3. Fault Confirmation
Subtask 30-42-00-710-082-A
A. Test
   (1) Do the operational test of the windshield anti-icing and defogging AMM 30-42-00-710-001.
4. Fault Isolation
Subtask 30-42-00-810-066-A
A. If the test gives maintenance message R FIXED WINDOW:
  • Disconnect the electrical connector from the R fixed window (7DG2) and do a check of the resistance between pins A and B on the receptacle of the R fixed window (7DG2).
NOTE: For right fixed window P/N SPSA320 series 2 (with 2 sensors),
F Heating Coat Resistance Versus Temperature - Fixed Window - P/N SPSA320 series 2 (with 2 sensors)
For right fixed window P/N SPSA320 series 3 (with 3 sensors),
F Heating Coat Resistance Versus Temperature - Fixed Window - P/N SPSA320 series 3 (with 3 sensors)
For right fixed window P/N 165313 series,
F Heating Coat Resistance Versus Temperature - Fixed Window - P/N 165313 series
For right fixed window P/N NH25216 series,
F Heating Coat Resistance Versus Temperature - Fixed Window - P/N NH25216 series
   (1) If the resistance is not correct:
   (2) If the resistance is correct:
     (a) Replace WHC-2 [2DG2] , AMM 30-42-34-000-001 and AMM 30-42-34-400-001.
     (b) If the fault continues:
  • Do a check and repair the wiring from the WHC 2 (2DG2) to R fixed window (7DG2) pin B/H to pin A/A.
Subtask 30-42-00-710-083-A
B. Do the operational test given in Para. 3.
[Rev.8 from Aug 2018] 2026.04.04 04:29:42 UTC
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