Sinclair SCV-750EB Service Manual page 51

20 CN71 System electronic expansion valve(For cooling)
21 CN72 Electronic expansion valve(For EVI)
22 CN70 System electronic expansion valve1
23 CN60 Outdoor units communication or HMI communication port
24 CN61 Outdoor units communication or HMI communication port
25 CN64 Fan inverter module communication port
26 CN65 Compressor inverter module communication port
27 CN300 Program burn import (WizPro200RS programming device)
28 IC10 EEPROM chip
Temperature sensors input port.
T4: Outdoor ambient temperature sensor
29 CN1 T3A/T3B: Pipe temperature sensor of the condenser
T6A: Refrigerant inlet temperature of EVI plate heat exchanger
T6B: Refrigerant inlet temperature of EVI plate heat exchanger
30 CN16 System pressure sensor
Temperature sensors input port
Th: System suction temperature sensor
Taf2: Water side antifreeze temperature sensor
31 CN31 Two: Unit water outlet temperature sensor
Twi: Unit water inlet temperature sensor
Tw: Total water outlet temperature sensor when several units are connected in
parallel
Temperature sensors input port
Tp1 :DC inverter compressor 1 discharge temperature sensor
32 CN69
Tp2:DC inverter compressor 2 discharge temperature sensor
Tz: Coil final outlet temperature sensor
33 CN19 Low voltage protection switch
34 CN91 Three-phase protector output switch
35 CN58 Fan relay driver port
36 CN8 Remote function of cool/heat port
37 CN8 Remote function of on/off port
38 CN8 Water flow switch port
SW3: Up button
a) Select different menus when enter menu selection.
b) For spot inspection in conditions.
SW4: Down button
a) Select different menus when enter menu selection.
39 SW3-SW6
b) For spot inspection in conditions.
SW5: Menu button
Press to enter menu selection, short press to return to the previous menu.
SW6: OK button
Enter the submenu or confirm the function selected by short pressing.
40 USB Program burn import (USB)
Digital tube
1) In case of stand-by, the address of the module is displayed;
41 DSP1/DSP2
2) In case of normal operation, 10. is displayed (10 is followed by dot).
3) In case of fault or protection, fault code or protection code is displayed.
S5: Dip switch
42 S5 S5-3: Normal control, valid for S5-3 OFF (factory default)
Remote control, valid for S5-3 ON.
DC12V
DC12V
DC12V
DC5V
DC5V
DC5V
DC5V
DC5V
DC5V
DC5V
DC5V
DC5V
DC5V
DC5V
DC5V
DC12V
DC12V
DC12V
DC12V
DC5V
DC5V
DC5V
DC5V
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