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LAYOUT OF PCB BOARDS
Rif Sign Description
1 CN28 Output port L to MAIN CONTROL BOARD FOR REFRIGERANT SYSTEM
2 CN22 Reserved
3 CN27 Output port N to MAIN CONTROL BOARD FOR REFRIGERANT SYSTEM
4 CN3 Reserved
5 PE2 Port for earth wire
6 DSP1 Digital display
7 CN17 Port for communication with the MAIN CONTROL BOARD FOR REFRIGERANT SYSTEM
8 PE1 Port for earth wire
9 CN26 Port for IC programming
10 CN10 Input port for neutral wire
11 CN11 Input port for voltage wire
12 CN9 Connection for outdoor ambient temperature sensor and condenser temperature sensor
13 CN24 Input port for +12V/9V
14 CN1 Connection for suction temperature sensor
15 CN8 Connection for temperature sensor
16 CN13 Connection for high pressure switch
17 CN14 Connection for low pressure switch
18 CN29 Port for communication with hydro-box control board
19 CN4 Connection for pressure sensor
20 CN30 Communication port (reserved)
21 CN2 Communication port (reserved)
22 CN33 Port for electrical expansion valve
23 CN16 Reserved
24 CN6 Port for 4-way valve
25 CN5 Port for valve SV6
26 CN7 Port for compressor 1 electric heating tape
27 CN18 Port for compressor 2 electric heating tape
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