22 · Diagnostics

Unpleasant climate control odours

Fault diagnosisUnpleasant climate control odours

UNPLEASANT CLIMATE CONTROL ODOURS

The climate control is working properly, but there is an unpleasant smell in the passenger compartment

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	First check that the unpleasant smells are not coming from the outside: they can be eliminated straight away by switching on the recirculation function	Continue to Step 1	Recirculation not working	See table L16 CLIMATE CONTROL RECIRCULATION NOT WORKING
1	CONDENSATION DRAINAGE PIPE CHECK	All OK	Problems met	Operation
	Check the state of the condensation drainage pipe from the air conditioning unit: it should not be dirty or obstructed.	Continue to Step 2	Pipe obstructed	Repair the drainage pipe
2	POLLEN FILTER CHECK	All OK	Problems met	Operation
	Check the condition of the pollen filter The pollen filter should be replaced at least once a year	Continue to Step 3	Filter obstructed	Replace the filter element Op. 5010B09
3	AIR SUPPLY DUCTS CHECK	All OK	Problems met	Operation
	Check the air supply ducts: they should not be obstructed with dirt or foul smelling substances	Continue to Step 4	Obstructed ducts	Clean ducts
4	HEATER RADIATOR AND EVAPORATOR CHECK	All OK	Problems met	Operation
	Check the heater radiator and the evaporator: the fins should not be obstructed with dirt or other substances.	Continue to Step 5	Radiator dirty or obstructed	Clean or replace the radiator Op. 5040C50
		Continue to Step 5	Evaporator dirty or obstructed	Clean or replace the evaporator Op. 5040C64
5	CORRECT OPERATION CHECK	All OK	Problems met	Operation
	Check that the fault is no longer present		Fault persists	Search for the fault starting from another symptom'

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