In automatic mode, the throttle is controlled by the system
automatically. When inside and outside circulation control
button is operated, the system will enter the manual mode.
Cooling effect at high temperature is poor, in principle, the
system maintains the inside circulation, in order to replace the
fresh air, ventilation will be carried out (keep 20min inside
circulation, switch to outside circulation for 2min, and then back
to inside circulation, manually switch to the outside circulation
is an exception).
6. Defrosting Control
Defrost button is used to start the windscreen defrost function.
At this point the fan speed is the maximum to exit the inside
circulation (because the inside circulation may affect the
defrost effect), and issued a request for compressor enabled.
Defrost Status
At any working status (auto, manual, off), press the defrost
button, the system enters into the defrost mode. After
defrosting is finished, the system returns to the state before
defrost. (automatic, manual, off).
In the defrost mode, the blower speed adjusts to the maximum,
throttle position adjusts to blow the glass, the outlet
temperature increased by a compensation constant.
Compressor start, throttle opens as in outside circulation mode.
In the defrost mode, pressing the button will adjust wind speed
to increase or decrease accordingly. Keep defrosting working
condition, the compressor continues to work to keep the wind
blowing glass pattern.
Exit the defrost mode, the following parameters return to
previous state:
1. Wind Speed
2. Wind Patterns
In the defrosting process, in addition to wind speed,
temperature adjustment, and rear window defrost, operation of
other buttons will cause the system to leave the defrost mode
and back to the previous mode (except newly selected
function). Exit defrosting, the system returns to the state before
defrost. (automatic, manual, off).
Rear Defrost Function
Rear defrost button is used for the rear window defrost. During
the rear window defrosting, LCD displays the corresponding
logos. Press the defrost button again to exit.
7. Automatic and Manual Working Status
System has automatic (AUTO), Manual (MANU) and stop
(OFF) three states.
Manual mode, to achieve the following features:
–
Manual speed adjustment
–
Manual wind mode control
–
Set the automatic temperature control according to the
temperature
Automatic mode, to achieve the following features:
–
Automatic speed adjustment
–
Automatic wind control mode
–
Automatic temperature control
8.2.3.2 Automatic Air-conditioning Working
Principle
1. System Diagnostics
Through the Data Link Connector, air-conditioning control
module can send the appropriate diagnostic information to the
scan tool. Scan tool can read the air-conditioning control
module manufacturers, and software version numbers.
2. Cooling System Working Principle
Heating, Ventilation and A/C System
Automatic Air-conditioning
8-11
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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