Midea romstol ecoHEAT, Operation Manual, Page: 44 / 69

41
7.3.2 Wiring
Wired Controller
1 2 3 4 5
B X Y E
X Y E A B
A
13.5VAC Input Voltage(A/B)
Wiring size 0.75mm
2
The rotating coded switch S3(0-F) on the main control
board of hydraulic module is used for set the modbus
address.
By default the units have this coded switch positioned=0,
but this corresponds to the modbus address 16 , while the
others positions corresponds the number, e.g. pos=2 is
address 2, pos=5 is address 5.
H2
H1
E
A+
B-
Modlous
12
0
45
678
9
3