38MGRBQ: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
9
WIRING DIAGRAMS (CONT)
Size 30K HH, 36K (36R)
Fig. 10 — Wiring Diagram Size 30 HH (High Heat) 36K (36R) - 4 Zone Max
Table 4 — Wiring Diagram Size 30 HH (High Heat) (36R) 4 Zone Max Codes
CODE PART NAME
CN3~CN4 Input: 230VAC High voltage
CN16~CN20
CN23, CN25
Output: Pin1(Connection of the high voltage)---”S” Pin2~Pin3(230VAC High Voltage)---”L1&L2”
P-1~P2 Output: Short Circuit with RED WIRE
CN1~CN2 Output: 230VAC High voltage---4-WAY VALUE
CN5~CN6 Output: 230VAC High voltage -- COMPRESSOR CRANKCASE HEATER
CN8~CN9 Output: 230VAC High voltage -- CHASIS CRANKCASE HEATER
P-1~P-2 Connection to the earth
CN18,CN19,
CN22,CN24
Output: Pin-Pin4:Pulse waveform (0-12VDC),Pin5,Pin6(12VDC)--EEV
CN7 Input: Pin1 (0-5VDC)---Discharge Sensor
CN17 Input:Pin3,Pin4(5VDC),Pin5(0-5VDC)---OUD Cond. Temperature
CN15 Input:Pin1,Pin3,Pin5,Pin7(5VDC)Pin2,Pin4,Pin6Pin8,(0-5VDC)---IDO PIPE TEMOP
CN14 Input:Pin2,Pin4(0-5VDC,Pin1,Pin3(0VDC)---H/L Pressure Switch
CN12 Input:Pin1(5VDC),Pin2(0-5VDC)---Compressor Temp.
CN29-L-OUT Output:230VAC High Voltage--To IPM Board
CN21 Connect to IPM Board
CODE OUTDOOR UNIT PFC AND IPM BOARD
CN4~CN5 Input: 230VAC High voltage---From Main Board
CN2~CN3 Output: Connection to the REACTOR
U~V~W Connect to compressor voltage among phases 0~200VAC
CN14 Connection the DC FAN
CN1 Connection to MAIN BOARD
1(A)2(A)3(A)L2L1
RED
BLACK
Y/G
BROWN
BLUE
BLACK
BROWN
BLUE
BLACK
TO A TO B
Y/G
POWER
SUPPLY
Y/G
COMPRESSOR
W(C)
V(S)
U(R)
DC FAN
MOTOR
3
3
REACTOR
CN14
BLACKREDBLUE
BLUEBLUE
UVW
CN3CN2
CN1
CN5CN4
BLACK(BLUE)
RED(BROWN)
5
Y/G
P-1
CN3 CN4
S-A S-B
CN25
CN23
4-WAY
CN1 CN2
HEAT1
CN6
CN5
HEAT2
CN9 CN8
P-2
Y/G
REVERSE
VALVE
CHASSIS
HEATER
CRANKCASE
HEATER
RED
P1
P2
VALVE-A
VALVE-B
CN18
CN19
6
6
ELECTRONIC
EXPANSION
VALVE
ELECTRONIC
EXPANSION
VALVE
CN7 CN17
OUTDOOR AMBIENT TEMP. SENSOR
COIL TEMP. SENSOR
T4
T3
COMP. DISCHARGE TEMP. SENSOR
T2B
CN15
AB
INDOOR COIL OUTLET
TEMP. SENSOR
CN14
LOW/HIGH
CN12
Comp Top
L-OUT
RY2
CN29
ON(4)
COM(3)
HIGH
PRESSURE
SWITCH
LOW
PRESSURE
SWITCH
4
RED
YELLOW
1(B)2(B)3(B)1(C)2(C)3(C)1(D)2(D)3(D)
TO C TO D
33
BROWN
BLUE
BLACK
BROWN
BLUE
BLACK
S-C
CN20
S-D
CN16
3 3
VALVE-D
CN24
6
ELECTRONIC
EXPANSION
VALVE
VALVE-C
CN22
6
ELECTRONIC
EXPANSION
VALVE
CD
COMP. TOP
OLP TEMP.
SENSOR
MAIN CONTROL BOARD
IPM DRIVE BOARD
Y/G Y/G Y/G
NOTE: Use the magnetic ring
(field supplied) to connect the
connective cable of the indoor
and outdoor units after
installation. One magnetic ring
is used for one cable.
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