194002527 - U10 UNPLEASANT CLIMATE CONTROL ODOURS

The climate control is working normally, but there are unpleasant smells in the passenger compartment.
0PRELIMINARY CHECKSALL OKPROBLEMS ENCOUNTEREDACTION
First of all, check the following with the compressor ON:

  • that the condensation drainage is not blocked;
  • that condensation drains inside the passenger compartment;
  • that the condensation drainage is not damaged;
  • that the recirculation is not working;
  • that there are no unpleasant smells coming from the outside by activating the recirculation.
Move on to Step 11. Condensation drainage blocked1. Clean the condensation drainage
2. The condensation is draining directly into the vehicle2. Restore the correct operation of the condensation drainage
3. Condensation drainage damaged3. Replace the condensation drainage
4. Recirculation not working4. Continue as instructed in the    See table L016 CLIMATE CONTROL RECIRCULATION NOT WORKING
5. Smells coming from the outside5. Move on to Step 5
1POLLEN FILTER CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the condition of the pollen filter.
"The pollen filter should be replaced at least once a year".
Move on to Step 2Filter obstructed.Replace the filter element    Op. 5010B08 CLIMATE CONTROL OUTSIDE AIR PURIFYING (POLLEN) FILTER - R.R.
2AIR INLET DUCTS CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the air inlet ducts: they should not be obstructed with dirt or unpleasant smelling substances.Move on to Step 3Ducts blocked.Wash the ducts.
3EVAPORATOR CHECKALL OKPROBLEMS ENCOUNTEREDACTION
With the engine started and the climate control system off (compressor OFF button), place the temperature knob in the max heat position and activate the fan. Check that the bad smell disappears.Move on to Step 6The smells persist.Move on to Step 4
4RADIANT MASS CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check that the radiant mass fins are not obstructed by dirt or other substances. With the engine running, the engine warm and the climate control (temperature) knob in the maximum hot position, check that there is no leak of fluid inside the vehicle by the plastic reservoir or the radiant mass casing.End of diagnosis1. Radiant mass dirty or blocked.1. Clean the radiant mass.
2. Fluid leak from the radiant mass.2. Replace the radiant mass.
5AIR INTAKE CHAMBER CLEANLINESS CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check that there are no foreign bodies inside the air intake chamber. In particular, check that the seal between the air intake chamber and the engine compartment is perfect.End of diagnosis1. Air intake chamber dirty.1. Clean the air intake chamber.
2. Seal not perfect.2. Restore the correct operation of the seal.
6EVAPORATOR REPLACEMENTALL OKPROBLEMS ENCOUNTEREDACTION
Replacement of the evaporator (check whether it is possible to clean it)
The use of Aircomatic equipment amd Wynn''s Airco-clean is recommended for disinfecting the mould on the evaporator and the directions should be followed.
End of diagnosisEvaporator covered in mouldAsk the customer whether it is the first time that the problem occurs, in which case the evaporator should be cleaned;If the customer complains for the 2nd time more than 6 months later, continue to clean the evaporator, if it is less than 6 months replace the evaporator    Op. 5040C64 A/C EVAPORATOR - R+R