38MGRBQ: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
11
WIRING DIAGRAMS (CONT)
Size 36K HH
Table 5 — 36K HH - 4 Zone Max
Table 6 — 36K HH - 4 Zone Max
CODE OUTDOOR UNIT MAIN BOARD SIZE 36K
CN1~ CN3 Input: 230VAC High voltage
CN16, CN21, CN29, CN37 Output: Pin1(Connection of the high voltage) “S” Pin2~ Pin3 (230VAC High voltage)“L1& L2”
P5, P6 Connection to the earth
CN17~ CN18 Output: 230VAC High voltage --- REVERSING VALVE
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 temp. 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(0-5VDC--COMP. TOP OLP TEMP SENSOR
CODE OUTDOOR UNIT PFC AND IPM BOARD SIZE 36K
CN2~CN3 Input230VAC High voltage
CN9
Communication: Pin1-Pin6: Pulse waveform (0-5VDC), Pin7, Pin9 (0VDC), Pin10 (5VDC) to outdoor main
control board
U~V~W Connect to compressor voltage among phases 0~250VAC
CN8, CN5 Connect to DCFAN voltage among phases 0~200VAC
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