Workshop Manuals Factory service & repair Alfa Romeo
Alfa Romeo 155 Factory Service Manual (1992-1998)65 · Heating and ventilation
65 · Heating & A/C

Fourth phase (page 2 of 2)

Make
Alfa Romeo
Model
155 Factory Service Manual
Year
1992–1998
Section
Third phase
Heating and ventilationFourth phase · page 2 of 2
  1. Repeatedly press the "AIR-" button.
    Each time the button is pressed the electric fan must be heard to decrease in speed while a sequence of codes starting from a value of "3F" to a value of "C" must appear on the "TEMP" display: 3F, 3d, 3b, 39, 37, 35, 33, 31, 2F, 2d, 2b, 29, 27, 25, 23, 21, 1F, 1d, 1b, 19, 17, 15, 13, 11, F, d, C.
    Display showing '3F' and 'C'
  2. Repeatedly press the "ECON" button.
    The electromagnetic coupling and compressor engagement relay must be activated and deactivated and, at the same time the relative led must come on and go off again.
    Control panel with ECON button
  3. Press the "TEMP-" button.
    A sequence of codes up to "32" identifying the coldest position of the air mixing vent (water cock closed), must appear on the "TEMP" display.
    Display showing '32'
  4. Press the "EXT" button.
    A sequence of codes up to "7A" or "7b" must appear on the display corresponding to the total opening of the cock on the heater inlet manifold or the air mixing vent in the intermediate position.
    Display showing '7A' and '7b'
  5. Press the "TEMP +" button.
    A sequence of codes up to "C7" (for version A) and "C2" (for version B) must appear on the "TEMP" display corresponding to the total opening of the cock on the heater inlet manifold and the air mixing vent at its hottest position.
    Display showing 'C7'
  6. Press the "RIC" button. Air recirculation within the passenger compartment must be reactivated and the led on the button must come on.
    Control panel with RIC button

Parts & tools for this job For 1992 Alfa Romeo 155

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