192005538 - S51 CLIMATE CONTROL SYSTEM NOISY / (IN PASSENGER COMPARTMENT)

The climate control is working normally but there is excessive noise coming from the passenger compartment fan
Results of the tests
1FAN CHECKAll OKProblems encounteredOperation

Check the climate control fan, in particular make sure:

  • that the fan and spiral is clean, if there are any foreign bodies, deposits of dust on the vanes and/or leaves remove them/blow through moving the fan from the engine support
  • that there are no breaks or cracks in the fan
  • there are no vibrations at low speed (check the operation with the fan detached but the electrical connection fitted)
The operation for determining vibrations should be carried out with great care to avoid fragements of the fan being expelled into the surrounding area
Move on to Step 2 1Fan dirtyClean the fan casing and all the ducts
Presence of breaks/cracks in the fanReplace the fan Op.    Op. 5040C30 AIR CONDITIONING FAN - R.R.
Electric motor noisy, fan not balanced.Replace the fan Op.    Op. 5040C30 AIR CONDITIONING FAN - R.R.
2AIR DUCT CHECKAll OKProblems encounteredOperation
Check for foreign bodies and damaged components inside the air ductsMove on to Step 3 1Presence of foreign bodies or damaged components inside the air ductsEliminate the obstructions from the dashboard ducts
3AIR VENT CHECKAll OKProblems encounteredOperation
Check that the vents are intact and that there are no foreign bodies that could give rise to noiseEnd of diagnosisVents obstructedRestore the operation of the vents