No. Name CN# Meaning
1
Power Supply
(CN3)
CN6-1 Earth: connect to Ground
CN7 N_in: connect to N-line (208-230V AC input)
CN8 L_in: connect to L-line (208-230V AC input)
2 S CN2 S: connect to indoor unit communication
3 4-WAY CN60 connect to 4 way valve, 208-230V AC when is ON.
4 HEAT1 CN4 connect to compressor heater, 208-230V AC when is ON
5 AC-FAN CN11 connect to AC fan
6 HEAT2 CN16 connect to chassis heater, 208-230V AC when is ON
7 CN38 CN38 connect to PC communication
8 PMV CN18 connect to Electric Expansion Valve
9 DC-FAN CN414 connect to DC fan
10 FAN_IPM IPM 501 IPM for DC fan
11 CN19 CN19 Internal drive motor
12 TESTPORT CN23 used for testing
13 CN9 CN9 connect to PC communication
14
U CN28 connect to compressor
V CN29 0V AC (standby)
W CN30 10-200V AC (running)
15 COMP_IPM IPM 301 IPM for compressor
16 TP T4 T3 CN17
connect to pipe temp. sensor T3, ambient temp. sensor T4, exhaust
temp. sensor TP
Note: This section is for reference only. Please take practicality as standard.
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