28
2) PCB B, Main control board of heat pump system
2
6
13
CN30
CN11
CN27
S3
CN37
CN20
CN8
CN5
CN35
CN36
S5
SW4
SW3
CN22
CN18
CN10
CN7
CN6
CN4
CN53
CN9
CN24
CN28
S6
CN29
CN31
CN38
CN21
CN41
CN26
CN109
+
+
ON
2
1
ON
2
1
3
3
ON
2
1
ON
2
1
3
3
A
.
8
1
4
20V
PGND
12V
GND
.
9V
GND1
.
2
7
9
16
.
.
.
18V
.
V i n
6
1
3
17
27
19
8
7
24
9
23
4
5
18
10
11
14
25
12
22
16
20
21
15
26
28
29
30
1
2
3
4
5
6
7
Port for communication with hydro-box
control board (CN24)
Assembly unit
Assembly unit
Coding
Coding
9
15
16
17
18
19
20
21
22
23
24
25
Reserved(CN21)
Port for temp.sensor Tp(CN8)
Port for temp.sensor Th(CN5)
Port for pressure sensor(CN6)
Power supply port from PCB C(CN41)
Port for ground wire(CN38)
Port for eletric heating tape2(CN7)
Port for 4-way value(CN18)
Reserved(CN11)
Port for outdoor ambient temp. sensor and
condenser temp.sensor(CN9)
8
10
11
12
13
Port for eletric heating tape1(CN10)
Port for communication with PCB C(CN4)
Port for 2-way valve 6(CN27)
26
Port for communication with Power Meter(CN26)
14
27
28
29
Port for 2-way valve 5(CN20)
Port for communication with PCB A(CN36)
Port for electrical expansion value(CN22)
Port for fan 310VDC power supply(CN53)
Port for high pressure switch and quick
check(CN29)
Port for fan 15VDC power supply(CN30)
Port for communication H1H2E(CN37)
Port for low pressure switch(CN31)
Port for communication XYE(CN28)
Port for fan(CN109)
DIP switch(S5,S6)
Rotary dip switch(S3)
Key for force cool&check(S3,S4)
Port for temp.sensors(TW_out, TW_in,
T1, T2,T2B )(CN35)(Reserved)
30
Digital display(DSP1)
V.1
Summary of Contents for ETH080VMA
Page 110: ...19 V 1 n d e d n d Automatic air purge valve r d r manometer d r...
Page 162: ...71 V 1...
Page 172: ...20 21 81 V 1...
Page 182: ...V 2...
