38MGRBQ: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
12
WIRING DIAGRAMS (CONT)
Size 48K
Fig. 12 — Wiring Diagram Size 48K - 5 Zone Max
Table 7 — Wiring Diagram Size 48K - 5 Zone Max
Table 8 — Wiring Diagram Size 48K - 5 Zone Max
CODE OUTDOOR UNIT MAIN BOARD SIZE 48K
CN1~CN3 Input: 230VAC High voltage
CN13,CN16,CN21,CN29,CN37
Output: Pin1 (Connection of the high voltage) “S” Pin2~Pin3 (230VAC High voltage) “L1 & L2”
P5,P6,P9 Connection to the earth
CN17~CN18 Output: 230VAC High voltage --- REVERSING VALUE
CN24~CN25 Output: 230VAC High voltage --- CRANKCASE HEATER
CN19~CN20 Output: 230VAC High voltage --- CHASSIS HEATER
CN11 Input: Pin1, Pin3, Pin5, Pin7, Pin9 (5VDC) Pin2, Pin4, Pin6, Pin8, Pin10 (0-5VDC) indoor coil outlet sensor
CN8 Input: Pin1 (0-5VDC), Pin2 (5VDC)
CN9 Input: Pin3, Pin4 (5VDC), Pin2 (0VDC), Pin1, Pin5 (0-5VDC)
CN15,CN23,CN26
CN30,CN33,CN38
Output: Pin1-Pin4: Pulse waveform (0-12VDC), Pin5, Pin6 (12VDC) to EEV
CN6
Communication: Pin1-Pin6: Pulse waveform (0-5VDC), Pin7, Pin9 (0VDC) Pin8 (0-5VDC), Pin10 (5VDC)--to IPM &
PFC board
CN2~CN4 Output: 230VAC High voltage to IPM & PFC Board
CN10 Input: Pin2, Pin4 (0VDC), Pin1, Pin3 (0-5VDC)--H/L Pressure switch
CN14 Input:Pin1(5VDC),Pin2(0-4VDC)--COMP.TOP OLP TEMP.SENSOR
CODE OUTDOOR UNIT PFC AND IPM BOARD SIZE 48K
CN2~CN6 Output: 224-380VDC High voltage
CN9
Communication: Pin1-Pin6: Pulse waveform (0-5VDC), Pin7, Pin9 (0VDC), Pin8 (0-5VDC), Pin10 (5VDC) to the main
board
U~V~W Connect to compressor voltage among phases 0~250VAC
CN8 CN5 Connect to DC FAN voltage among phases 0-200VAC
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