Wygląda na to, ża masz problem z panelem sterującym lub modułem wykonawczym, zacznij od porządku z nim, bo jak nie działa prawidłowo to takie efekty możesz mieć. Ponadto pamiętaj, że te auta nie miały filtra ppyłkowego więc po 30 latach możesz mieć gnój na nagrzewnicy
Tu masz procedurę sprawdzania HEVAC-a:
HVAC system try this test:-
With the engine up to normal operating temperature, set the
temperature control knob on the panel to ‘Full Cool’ in
‘Manual’ mode with the fan speed on ‘Defrost’ (nothing else
selected)
You should get:-
Hot air at full volume out of the DEMIST vents
Some air out of the SIDE face vents
NO air out of the CENTRE face vents
NO air out of the FOOTWELL vents
Turn the fan speed control to ‘High’.
After a delay of, perhaps, 45 seconds, you should get:-
5) NO air out of the DEMIST vents
6) Cold air out of the SIDE face vents
7) Cold air out of the CENTRE face vents
Cold air out of the FOOTWELL vents
Turn the temperature control knob to ‘Full Heat’
After a delay of, perhaps, 45 seconds, you should get:-
9) NO air out of the DEMIST vents
10) Hot air out of the SIDE face vents
11) NO air out of the CENTRE face vents
12) Hot air out of the FOOTWELL vents.
NOTES:
The ‘45 seconds’ delay is to allow the ECU / system to
react to the new selection - and to avoid ‘hunting’.
You can REDUCE the temperature exiting the face level
vents in relation to that exiting the footwell vents by
moving the slider control from ‘hot’ (temperatures the same)
to cold (face level cooler)
You can introduce demisting by selecting the ‘AIR’ button
on the panel
You can alter the dehumidifying effect of the A/C by using
the ‘raindrops’ buttons or cut out the A/C compressor
completely by selecting ‘ECON’
In ‘Auto’ mode (not ‘Manual’) the ECU varies the fan speed
on ‘Low’ and ‘Medium’ only but not on ‘High’ or ‘Defrost’.
