Multi-Function Air To Water Heat Pump
Symbol
Meaning
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
Compressor of system 1
Compressor of system 2
Fan motor
4 way valve 1
4 way valve 2
Electromagnetic valve1
Electromagnetic valve2
Air condition water pump
Hot water pump
Solar water pump
Air condition electricity heating
Hot water electricity heating
Crankcase heater
Power Input
Power Input
Power Input(AC-N)
Power Input(AC-N)
Transformer input
Wire controller
Transformer output
Meaning
Symbol
NO .
NO
NO .
NO
3. MK3075 PCB input and output port definition
35
36
37
38
39
40
41
42
43
44
45
46
47
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
OUT9
OUT10
OUT11
OUT12
OUT13
AC-L
AC-N
N2
N3
TRAN-IN
CN9
CN10
MK3075
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
FUSE
12
34
ON
DIP
CN1
CN2
CN3
CN9
CN10
IC6
IC12
IC7
N3
N2
AC-N
AC-L
RY1
OUT1
RY2
RY3
RY4
RY5
RY6
RY7
RY8
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
OUT9 OUT10 OUT11 OUT12
RY9
RY10
RY11
RY12
RY13
OUT13
RP1
RP4
CC394B-V1.1
W101122
E-V
AL
VE1
E-V
A
L
VE2
01
02
03
04
05
06
07
08
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
TRAN-IN
CN1
CN2
CN3
CN2
GND
Hot water tank temp.
GND
Ambient temp.
GND
System1 discharge temp.
GND
System 2 discharge temp.
GND
System 1 pipe temp.
GND
System 2 pipe temp.
GND
Air-conditioning outlet water temp.
GND
Air-conditioning inlet water temp.
GND
Hot water outlet temp.
GND
Solar water collector temp.
GND
Air condition side net switch
GND
Mode switch
GND
Forced electric heater model switch
GND
System 1 high-pressure switch
GND
System 1 low-pressure switch
GND
Hot water flow switch
GND
Air conditioning water flow switch
GND
GND
GND
GND
GND
Phase sequence protection
GND
System 2 high-pressure switch
System 2 low-pressure switch
Hot water electricity heating protection switch
Air conditioner electrical heating protection switch
Run led display
Failure indication
1flash 1 off
L1 side overcurrent protection
Run led display
Failure indication
2flash 1 off
3flash 1 off
4flash 1 off
5flash 1 off
L2 side overcurrent protection
L3 side overcurrent protection
L4 side overcurrent protection
Power phase sequence protection
2.2 .MK3071 PCB Power sequence, current protection board failure indication
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