Immergas MAGIS M4-30 Use And Installation page 60

2) PCB B, main control board of heat pump system
2) PCB B, Scheda di controllo principale del sistema a pompa di calore
8
7
6
5
4
3
2
1
Code Assembly unit
1 Port for earth cable (CN38)
2 Port for 2-way valve 6 (CN27)
3 Port for 2-way valve 5 (CN20)
4 Port for electric heating tape 2 (CN7)
5 Port for electric heating tape 1 (CN10)
6 Reserved (CN11)
7 Port for 4-way valve (CN18)
8 Reserved (CN21)
9 Power supply port from PCB C (CN41)
10 Port for communication with power meter (CN26)
Port for communication with hydro-box control board
11
(CN24)
12 Port for communication with PCB C (CN4)
13 Port for pressure sensor (CN6)
14 Port for communication with PCB A (CN36)
15 Port for Th temperature sensor (CN5)
9 10
CN41 CN26
A
CN21
CN18
ON
ON
1 2 3 1
1 2 3 1
S5
CN10
CN11
CN7
CN20
CN27
1 2 4
V i n
+
CN38
Code
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17
18
19
20
21
22
23
24
25
26
27
28
29
30
60
11 12 13
CN24 CN4 CN6
CN36
CN5
CN8
CN9
ON
ON
2 3
2 3
CN31
S6
CN29
CN35
S3
CN28
SW3 SW4
CN37
20V
6 7 8
CN22
CN30
CN53
CN109
Assembly unit
Port for Tp temperature sensor (CN8)
Port for external room temperature sensor and con-
denser temperature sensor (CN9)
Digital display (DSP1)
Dip switch (SS.S6)
Port for low pressure switch (CN31)
Port for high pressure switch and quick check (CN29)
Rotary Dip switch (S3)
Port for temperature sensors (TW_out; TW_in; T1; T2;
T2B) (CN35) (Reserved)
Port for XYE communication (CN28)
Keys for forced cooling and control (S3, S4)
Port for H1H2E communication (CN37)
Port for electric expansion valve (CN22)
Port for fan 15VDC power supply (CN30)
Port for fan 31VDC power supply (CN53)
Fan port (CN109)
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15
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18
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21
22
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26
27
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30