Sinclair SDV4 series - Page 59

Troubleshooting 69
1. PCB ports instructions
PCB ports instruction
No.
Content
Port voltage
1
Inspection port for inverter module voltage
DC 540V,DC 15V
2
Mutual inductor for compressor DC current
In dynamic change
3CN201
Activation port of inverter module
The left the first pin:DC
3.3V
4CN19
Port of DC fan 1
The left the first pin:DC
310V,the third pin:DC 15V
5CN17
Port of DC fan 2
The left the first pin:DC
310V,the third pin:DC 15V
6CN66
Reserved
----
7CN59
Loading output terminal(4-way valve control)
AC 220V
8CN41
Power supply for relay
AC 220V
9CN22
EXV activation port
The left the first pin:DC 12V
10
Input current of the mutual inductor at the inverter compressor
In dynamic change
11CN15
Reserve
---
12
SW3 net address code automatically
---
13CN11 Internet group control of indoor units DC 2.5-2.7V
14CN10 Communication between indoor and outdoor units DC 2.5-2.7V
15CN9 Inspection port for outdoor ambient temp. and condenser coil temp. DC 0-5V
16CN8 Air discharge temp. sensed port at the compressor DC 0-5V
17CN6 Input port for system pressure inspection DC 0-5V
18CN250 Input port for power supply of the main control board AC 220V
19CN64 Loading output terminal(18kW: solenoid valve SV5 control; reserved for 14kW) AC 220V
20CN62 Loading output terminal (delay control of DC power)
AC 220V
21CN60 Loading output terminal(crankcase heating control)
AC 220V
22CN58 Loading output terminal(4-way valve control)
AC 220V
23CN56 Loading output terminal(solenoid valve SV6 control)
AC 220V
24CN67 Reserved ----
25CN65 Loading output terminal(16kW: solenoid valve SV5 control; reserved for 14kW)
AC 220V