Midea RSJ-120/ZN1-540V1 User Manual

MCAC-HTSM-201906 Midea R410A Direct Heating Type HPWH 50Hz Technical Manual
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Table 2-7.2: Main PCB descriptions
Label in
Figure 2-7.1
Code
Content
1
Current detection
2
CN37
Black: Air side heat exchanger temperature sensor connection;
White: Ambient temperature sensor connection;
3
Electronic lock
4
CN26
Compressor suction temperature sensor connection
5
CN27
Compressor discharge temperature sensor connection
6
CN29
Water inlet temperature sensor connection
7
CN30
Refrigerant heating pipe temperature sensor connection
8
CN34
Water outlet temperature sensor connection
9
EEPROM
10
CN35
Water tank temperature sensor connection
11
CN43
T6bRefrigerant heating pipe temperature sensor connection
(Reserved)
12
CN21
High pressure switch connection
13
CN15
Low pressure switch connection
14
CN40
P Q E communication port
15
CN3
Water flow switch connection
16
CN2
Remote on/off switch connection
17
CN36
Wired controller power supply
18
CN38
Transformer output
19
CN28
Water flow control valve connection
20
CN25
Electronic expansion valve connection
21
CN24
Remote alarm connection
22
CN41
Circuit water pump and E-heater control
23
CN16
4-way valve connection
24
CN17
Solenoid valve connection
25
CN11
Compressor crank E-heating connection
26
CN56
Electric ball valve off
27
CN57
Electric ball valve on
28
CN7
Refrigerant pipe E-heating connection
29
CN13
Compressor connection
30
CN32
Transformer input
31
CN42
Fan motor connection
32
CN31
AC Power input
33
Digital pipe
34
Check switch
35
Address dial code
36
Dial switch
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Midea RSJ-120/ZN1-540V1 Specifications

General

Brand	Midea
Model	RSJ-120/ZN1-540V1
Category	Heat Pump
Language	English