CONTROL MODULES
SMO 40
Terminal block X1 on the humidity sensor board (AA28)
in HTS 40 is connected to terminal block AA3-X4:9-12
in the control module.
1
2
3
4
12
11
10
9
8
7
12V
B
GND A
AA28-X1
HTS 40
Control module
AA3-X4
LEK
AA3-X4
MULTIPLE SENSORS
If RMU 40 or SMS 40 is to be connected to the main
product, it can be connected from terminal block (AA28-
X1)) in HTS 40.
Heat pump/
indoor module
RMU 40/
SMS 40
HTS 40
RMU 40/SMS 40
HTS 40
A
B
GND
+12V
5
6
7
8
AA28-X1
1
2
V
A
B
G
N
D
AA28-X1
HTS 40
RMU 40/SMS 40
THE SENSOR'S TOLERANCE LEVEL
0
0
10
20
30
40
50
60
70
80
90
100
±2
±4
±6
±8
±10
ΔRH
(%RH)
Relativ luftfuktighet
(%RH)
Relative humidity
(%RH)
ΔRH
(%RH)
DIP SWITCH
The DIP switch (S2) on the humidity sensor board (AA28)
must be set as follows.
Humidity sensor 2
ON
1 2 3 4
Humidity sensor 1
ON
1 2 3 4
Humidity sensor 4
ON
1 2 3 4
Humidity sensor 3
ON
1 2 3 4
HTS 40 | GB
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