3 Product description
112
Installation and maintenance instructions aroTHERM plus 0020297937_01
3.3.3
Noise reduction mode
A noise reduction mode can be activated for the product.
In noise reduction mode, the product is quieter than in nor-
mal operating mode, which is achieved by a limited com-
pressor speed and an adjusted fan speed.
3.4
Product design
1
1
Air outlet grille
3.4.1
Components, unit, front
1
2
3
4
5
6
1
Evaporator (heat ex-
changer)
2
INSTALLER BOARD
PCB
3
HMU PCB
4
Compressor
5
INVERTER assembly
6
Fan
3.4.2
Components, unit, rear
3
4
1
2
5
1
Temperature sensor, at
the air inlet
2
Air inlet grille
3
Connection for heating
flow
4
Connection for heating
return
5
Cover, electrical con-
nections
3.4.3
Components, compressor
12
1
2
3
4
5
11
10
9
8
7
6
1
Automatic air vent
2
Pressure sensor, in the
heating circuit
3
Filter
4
Condenser (heat ex-
changer)
5
Heating pump
6
Pressure switch, in the
high-pressure area
7
Maintenance connec-
tion, in the high-pres-
sure area
8
Compressor, encapsu-
lated