If the cooling performance of the air-conditioning system in the above-mentioned vehicles is unsatisfactory, the installation of an air diffuser and an additional cable with resistor (for the evaporator temperature sensor) can remedy the situation.
When outside temperatures and humidity levels are high, inadequate cooling of air can occur as a result of unfavorable flow conditions. The evaporator then partially freezes up. This can be triggered by a negative characteristic of the evaporator temperature sensor.
Proceed as follows to rectify the problem:
Assisted by the additional diffuser, the air flow inside the evaporator box will be optimized, thus bringing about an improved cooling performance.
Installing a cable with resistor alters air-conditioning control and prevents the evaporator from freezing up.
Important safety note
Technical information and practical tips have been compiled by HELLA in order to provide professional support to vehicle workshops in their day-to-day work. The information provided on this website is intended for use by suitably qualified personnel only.
Reprinting, distribution, reproduction, exploitation in any form or disclosure of the contents of this document, even in part, is prohibited without our express, written approval and indication of the source. The schematic illustrations, pictures and descriptions serve only for the purposes of explanation and representation of the instructions and cannot be used as a basis for installation or assembly work. All rights reserved.
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