24
ON DIP
1 2 3 4
RY
1
RY 9
RY 8
RY 7 RY 6 RY 5
RY 4 RY 3 RY
2
L
BYQ
N
TRAN-
IN
SW 1
ON DIP
SW 2
1 2 3 4
SW 1
DEBUG
RS48
5
CN
4
TRAN-
OUT
A B
12 V GND A B
T 1 T2
T3
T4
T5
T6
T7
T8
W_ COM
V.Wiring diagram
1. MK6019PCB input and output port definition
ON
O F F
1
单相
三相
2
预留
3
4
Symbol
Meaning
L
Live wire
N
Neutral wire
TRAN -IN
Transformer primary
TRAN-OUT
Transformer secondary
E-VALVE1
The main electronic expansion valve
E-VALVE2
The auxiliary electronic expansion valve
RS485
Centralized control communication
CN4
Wire control interface
IN7
Phase sequence protection
IN6
Air conditioning on line switch
IN5
high pressure switch
IN4
low pressure switch
IN3
Water flow switch
IN2
Electric heating overheating protection
IN1
Emergency switch
COM
GND
W
-
COM
12V
Symbol
Meaning
RY1
Water cycle pump signal output
RY2
Reserved
RY3
Reserved
RY4
Reserved
RY5
Soft start signal output
RY6
Reserved
RY7
Four way valve signal output
RY8
Fan signal output
RY9
Compressor signal output
T1
Reserved
T2
Water outlet temperature
T3
coil temperature
T4
discharge temperature
T5
suction temperature
T6
Ambient temperature
T7
Water inlet temperature
T8
Current check
DEBUG
Programme writing por
CN
2
E- V
A
LV
E2
E- V
A
LV
E1
F
U
S
E
IN1
IN
2
CO
M
I
N3
I
N4
IN5
IN6
IN7
