4 DISPLAY AND CONTROL ELEMENTS
4.52 MHL380 D
4.9.1 Heating mode
The cab heating is dependent upon the en-
gine coolant temperature. The blower air flow
is routed through a heat exchanger whose
temperature is controlled by the flow rate of
the coolant.
Heating without reheat function
â–º
Switch off the air conditioning system with
the button toggle (81/91). The function dis-
play on the button toggle (77/91) must not
light up.
â–º
The button toggles (81/92) on the digital
display (81/93) can be used to adjust the
displayed temperature as required.
â–º
The 4-speed switch (77/88) can be used to
adjust the blower speed as required.
â–º
The vents (77/1-4) can be used to adjust
the air distribution as required.
Heating with reheat function
The reheat function firstly cools the air and
then warms it. The ejected air is thereby drier
and does not steam up the windows.
â–º
Switch on the air conditioning system with
the button toggle (81/91). The function dis-
play on the button toggle (77/91) must light
up.
â–º
Adjust the heating level, blower and air
distribution as described above.
Switching the heater controller off
â–º
The temperature indicated on the digital
display (81/93) should be lowered with the
minus button toggle (81/92) until the value
"lo" is displayed.
â–º
Lower again.
The controller is switched off.
Switching the heater controller on
â–º
The controller is switched back on with the
plus button toggle (81/92).
The digital display (81/93) indicates the
value "lo".
â–º
Set the desired temperature.
0
1
2
3
4
1
9
.0
90
92
93
91
89
88
MHL-NBXX-558
Fig. 81 Lever for heating/air conditioning system