Carrier 38MBQ Series Service Manual page 9

Outdoor unit single zone ductless system
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WIRING DIAGRAMS (CONTINUED)
CN1,CN3
CN2,CN4
CN5
CN6
CN8,CN9,CN12
CN10
CN15
CN17,CN18
CN19,CN20
CN22
CN24,CN25
CN27、CN32、CN34,
CN28、CN31、CN36
CN39
P-6
U V W
CN6 ,CN8
CN3
CN7,CN11
CN9
CN55
CN14、CN15 -- CN39,
Fig. 7 – Wiring Diagram − Size 48K
Table 7—Outdoor Unit Main Board
Power input: 230V AC
Output: Power output for DRIVER BOARD (230V AC)
Input: Communication Main board and IPM Board, Pin1 (5V DC )
Input: DC FAN motor1 and DC FAN motor2 control, (Pin7 5V DC)
Input: Temperature sensor (5V DC)
Input: Pressure test (5V DC)
Output: PMV control,Pin5 (12V DC),Pin6 (12V DC)
Output: High voltage for 4-way (SV) control (230V AC)
Output: High voltage for HEAT_D control (230V AC)
Communication to indoor unit,Pin1 (5V DC),Pin3(5V DC)
Output: High voltage for HEAT_Y control (230V AC)
Output: Power output for AC FAN motor1 and AC FAN motor2 (230V AC)
Output: L2 for AC FAN、SV and HEAT, High voltage (AC)
Connection to the earth
OUTDOOR UNIT (DRIVER BOARD)
Output: Pulse (0-380VDC) for COMPRESSOR
Input: Power input for DRIVER BOARD (200-320V DC )
Output: Connect PFC Inductance, high DC voltage
Output: DC FAN motor1 and DC FAN motor2 control (Pin1 310V or 380V DC)
Output: Communication Main board and IPM Board Pin7 (5V DC )
Output: Communication IPM Board and Main board Pin1 (12V DC )
Output: High DC voltage (310V or 380V DC)
9

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