Climate Control Panel Operation
Climate Control Panel Operation
Communication between the control panel and the A/CCM is via a serial data communications link.
Switching the Climate Control system ON
The climate control system can be switched ON by pressing one of the following:
Ref # 1 On/Off (resumes the system on in the previous settings).
Ref # 10 A/C (resumes the system on in the previous settings).
Ref # 11 AUTO (resumes the system on at the previous temperature setting).
Ref # 12 DEF (resumes the system on at the previous temperature setting).
Button (switch) logic
All buttons with an integral LED state lamp conform to the following operating logic.
When the state lamp is lit the relevant function is operational. From this condition, pressing the button will de-activate the function, confirmed by the LED being de-energized and the presence of a single audible 'beep'. A single 'beep' will accompany the state lamp to confirm function re-selection.
1. ON/OFF & manual fan speed.
Pressing this knob activates the system ON at the last setting or switches the system OFF. Rotate the knob clockwise to increase and anti-clockwise to decrease fan speed and thus airflow.
With the system OFF, ram air is available by the selected air distribution mode (indicated by state lamp). Air flow will NOT occur unless a manual air distribution mode is selected, this air being unconditioned and flow dependent upon vehicle speed.
NOTE: The blowers are inhibited until the engine coolant temperature is > 35° C, unless DEFROST is selected.
2. Manual Air Recirculation
Closes the outside air intakes of the blower assemblies and recirculates air within the vehicle.
Two options of control are available:
Timed Recirculation. Pressing the button for less than 1.5 seconds lights up the LED (confirmed by a single bleep). This provides recirculation of interior air for a period of approximately 5 minutes. Pressing the button within five minutes returns the system to fresh air intake mode.
Continuous Recirculation. Pressing and holding the button for more than 1.5 seconds lights up the LED (confirmed by two beeps). This provides continuous recirculation of interior air. Pressing the button returns the system to fresh air intake mode.
NOTE: Avoid using manual air recirculation for prolonged periods in cold weather, this may result in interior misting of glass.
3. Temperature Scale Selection
Press the appropriate button to display temperatures in degrees Celsius or Fahrenheit.
4. Manual Fan Speed
Rotating the fan speed control knob (to vary fan speed) will display a proportional number of horizontal bars on the LCD. There are total of eleven manual fan speeds available.
5. Temperature Display
Indicator of internal demand temperature or external ambient temperature. The external ambient is updated every 4 seconds when the road speed > 25 km/h.
6. Scale
Selected temperature scale, Celsius or Fahrenheit.
7. External temperature
Symbol indicates when this option is selected
8. Automatic
Symbol indicates when the control of, temperature, fan speed and air distribution are all in Auto mode.
9. External
There are two modes of external ambient temperature selection:
Quick Display. Pressing the button for < 1.5 seconds (confirmed by a single bleep) will display the external temperature for 4 seconds.
Continuous Display. Pressing and holding the button for > 1.5 seconds (confirmed by two beeps) displays the external ambient temperature continuously, the value of which will be updated every 4 seconds given that vehicle road speed is > 25 km/h. Pressing the button again for < 1.5 seconds resets to the previous display.
NOTE: Continuous external temperature display will be cancelled when the ignition is switched OFF but not during engine cranking.
10. A/C
This push-on/push-off button will either select or deselect (as indicated by the state lamp) the refrigeration system.
The refrigeration system is automatically engaged when the Auto button is pressed.
NOTE: Interior misting of screens may be reduced by continuous operation of the refrigeration system.
11. Auto
When selected and the state lamp lit, A/C mode will be operational and control of vent outlet temperature, fans speed and air distribution will be automatic.
AUTO mode will disengage should manual air distribution or defrost buttons be operated or the manual fan speed knob be rotated.
NOTE: Automatic temperature control is constantly maintained irrespective of selected manual overrides.
12. Defrost
Push-on push-off button, which when engaged will direct all air to the front and side glass at maximum fan speed. The heated windshield (if fitted) will also be energized for a timed cycle of 6,5 minutes, but may be cancelled by pressing the HEATED WINDSHIELD (F) button. Pressing 'DEF' again will return to the last setting with automatic temperature control being maintained.
Directing warm and humid air onto a cold screen can produce interior misting of screens. Operating the climate control system without the refrigeration system operating will exacerbate this problem.
NOTE: Directing cold air onto the screen in warm humid conditions can produce external condensation.
13. Heated Windshield (F)
Pressing the heated windshield button (where fitted) will energize the electrically heated windshield elements for a timed cycle of 6.5 minutes; pressing the button again will cancel the request. Should the engine stall or the ignition be turned OFF, the timer will be cleared and the function cancelled.
NOTE: The heated windshield may be activated with the climate control system OFF but the engine must be running.
In very cold ambient temperatures, icing of the interior of the glass is possible when the climate control system is operating in AUTO mode; to reduce this possibility the A/CCM provides automatic operation of the heated windshield.
With the following conditions met, the heated windshield will automatically energize but the state lamp will NOT be lit.
External temperature < 0° C
Vehicle speed > 48 km/h
The first two conditions exist > 2 minutes.
Engine speed > 50 revs/mm
14. Heated Backlight (R)
Pressing the heated backlight button will simultaneously energize the heater elements for timed cycles of;
21 minutes backlight
11 minutes exterior mirrors
Pressing the button again within the 21 minute timer will cancel the request.
If the engine is stalled, or the ignition switched OFF, the backlight and door mirror timers will be cleared, resulting in both functions being switched off.
NOTE: Both the backlight and door mirrors may be activated with the climate control system OFF, but the engine must be running.
15. Temperature Decrease
Pressing this button (BLUE symbol) decreases the interior temperature setting in 10 increments. Should the button be pressed when the setting temperature is below the lower automatic control temperature limit, the display will indicate 'LO'.
16. Temperature Increase
Pressing this button (RED symbol) will raise the temperature setting in 1° increments Should the button be pressed when the setting temperature is above the upper automatic control temperature limit, the display will indicate 'HI'.
Automatic Temperature Control Range
°C °F
LO LO
17 61
62
18 63
64
19 65
66
20 67
68
21 69
70
22 71
72
23 73
74
24 75
76
25 77
78
26 79
80
27 81
82
28 83
84
29 85
86
30 87
88
31 89
90
HI HI
LO demands the maximum COOLING performance from the system with the blowers operating automatically at maximum speed.
HI demands the maximum HEATING performance from the system with the blowers operating automatically at maximum speed.
Pressing and holding either temperature selection button continuously changes the setting temperature by steps of 1°, every 0.4 seconds.
NOTE: The interior temperature does not change when the temperature scale is changed between Celsius and Fahrenheit, however the temperature display will change to the nearest equivalent number.
Examples:
17C 61F 17C
66F 19C 66F
NOTE: When operating in HI or LO mode and the AUTO button is pressed, the system will adopt the nearest automatic control temperature setting:
LO AUTO DISPLAY INDICATES 17° C or 61° F
HI AUTO DISPLAY INDICATES 31° C or 90° F
NOTE: When switching the system on using the AUTO button, the system will display the previous temperature setting, except under the following conditions:
LO, system OFF, auto display indicates 17° C or 61° F
HI, system OFF, auto display indicates 31° C or 90° F
17. Face
Pressing this button will direct all airflow to the center and side face vents only; pressing again will return the system to automatic control mode.
NOTE: When in AUTO mode and in a hot climate, a bleed of cold air is delivered to foot level. This bleed automatically shuts off when the interior temperature has cooled sufficiently.
18. Bi-Level
This push-on/push-off button will direct air to the center and side face vents and the front footwells.
Pressing the button (off) will return the system to automatic control mode.
19. Foot
This push-on/push-off button will direct the majority of airflow to the front footwells with a small bleed of air to the front and side screens. Pressing the button (off) will return the system to automatic control mode.
20. Demist
Pressing this button will direct air to the front and side screens and the front footwells. Pressing the button (off) will return the system to automatic control mode.