323000975 - U010 UNPLEASANT CLIMATE CONTROL ODOURS

The climate control is working normally, but there are unpleasant smells in the passenger compartment.
Test results
0PRELIMINARY CHECKSAll OKProblems encounteredOperation
First of all, check the following with the compressor ON:- that the condensation drainage is not blocked;- that condensation drains outside the passenger compartment;- that the condensation drainage is not damaged;- that the air/recirculation intake is not working;- that there are no unpleasant smells coming from the outside by activating the recirculation- that the smell does not come from the fan, ceramic resistor or speed regulator overheating (auto version).Move on to Step 11. Condensation drainage blocked2. The condensation is draining directly into the vehicle3. Condensation drainage damaged4. Recirculation not working5. Smells coming from the outside6. Smells from overheated fan, resistor or speed regulator1. Clean the condensation drainage2. Restore the correct operation of the condensation drainage3. Replace the condensation drainage4. Continue as indicated    See table L016 CLIMATE CONTROL RECIRCULATION NOT WORKING 5. Move on to Step 56. Replace damaged component
1POLLEN FILTER CHECKAll OKProblems encounteredOperation
Check the condition of the pollen filter
The pollen filter should be replaced at least once a year
Move on to Step 2Filter obstructedReplace the filter element    Op. 5010B08 CLIMATE CONTROL OUTSIDE AIR PURIFYING (POLLEN) FILTER - R.R.
2AIR INLET DUCTS CHECKAll OKProblems encounteredOperation
Check the air inlet ducts: they should not be obstructed with dirt or unpleasant smelling substances.Move on to Step 3Ducts blockedWash the ducts.
3EVAPORATOR CHECKAll OKProblems encounteredOperation
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 persistMove on to Step 4
4RADIANT MASS CHECKAll OKProblems encounteredOperation
Check that the fins of the radiant mass are not blocked with dirt or other substances.With the vehicle engine on, engine temperature warm or climate control system (temperature) knob set to max heat, check for fluid leaks inside the vehicle from the plastic tank or the radiant mass caseEnd of diagnosis1. Radiant mass dirty or blocked2. Fluid leak from the radiant mass1. Clean the radiant mass2. Replace the radiant mass
5AIR INTAKE CHAMBER CLEANLINESS CHECKAll OKProblems encounteredOperation
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.2. Seal not perfect.1. Clean the air intake chamber.2. Refit the seal correctly
6EVAPORATOR REPLACEMENTAll OKProblems encounteredOperation
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. 5040C66 AIR CONDITIONING EVAPORATOR - R+R WITH AIR CONDITIONING CASING REMOVED