Pr Essurization Operating Mode - Hardi ALPHA EVO EcoDrive 5100 Instruction Book

5 - Operation
LO mode
When the tempe rature control knob is in «LO» position, the ATC control module forces the system as follows:
When the tempe rature knob is in «LO», the ATC control module
• Water valve is closed
• Speed blower at the maximum speed (if le knob is in «AUTO»)
• A/ C compressor is engaged
The screen displays «LO» and « A/C on».
HI mode
When the tempe rature control knob switch is in «HI» position, the ATC control module forces the system as follows:
• Water valve is opened
• Speed blower at ¾ of Max (if the sele ctor knob is on « AUTO»
• A/C compressor is stopped
The screen displays «HI» and «A/C off»
Defrost function
• Press the button, the ATC selects the defrost function, and forces the following conditions:
- Water valve fully opened
- M aximum blower spe ed (if the blower speed knob is in «AUTO» position)
- AC compressor is engaged (independent of the e xter nal temperature)
- Flap fresh air doe sn't change the position
ATC displays «HI», the ATC and «DEFROST» icons are on
• Press again the
Also in the ATC goes into «OFF» mode, it exit from «DEFROST» function.
Pressurization operating m ode
Pressurization ope rating modes
When the ATC is in a climate operating mode different from OFF mode, i t is possible to obtain the following operation modes,
pressing the button
No-Pres surization mode
When the symbol
The depressurization cabin led and the hour meter led are off.
The flap fresh air is close.
Overpressure mode
• Press the button
The symbol is on.
110
button, the ATC exits from «DEFROST» function.
is off, the auxiliar y outside air fan is off.
the ATC set the overpressure function and activates the auxiliar y outside air fan.