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38MGRBQ: Service Manual
WIRING DIAGRAMS (CONT)
Size 30K HH, 36K (36R)
CN4
CN5
IPM DRIVE BOARD
CN2
CN3
U
V
W
BLUE
BLUE
BLUE
RED
BLACK
REACTOR
V(S)
W(C)
U(R)
COMPRESSOR
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.
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
CN3~CN4
Input: 230VAC High voltage
CN16~CN20
Output: Pin1(Connection of the high voltage)---"S" Pin2~Pin3(230VAC High Voltage)---"L1&L2"
CN23, CN25
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,
Output: Pin-Pin4:Pulse waveform (0-12VDC),Pin5,Pin6(12VDC)--EEV
CN22,CN24
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
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
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
RED(BROWN)
BLACK(BLUE)
CN29
5
CN1
P-1
Y/G
CN14
CN3
3
3
DC FAN
MOTOR
L1
L2
1(A)2(A)3(A)
TO A
Y/G
POWER
SUPPLY
COMP. TOP
LOW
HIGH
OLP TEMP.
PRESSURE
PRESSURE
SENSOR
SWITCH
SWITCH
4
CN12
CN14
Comp Top
LOW/HIGH
L-OUT
ON(4)
RY2
COM(3)
MAIN CONTROL BOARD
S-A
S-B
S-C
S-D
CN4
4-WAY
CN1 CN2
3
3
3
3
1(B)2(B)3(B)1(C)2(C)3(C)1(D)2(D)3(D)
TO B
TO C
TO D
Y/G
Y/G
Y/G
PART NAME
OUTDOOR UNIT PFC AND IPM BOARD
9
A
B
C
D
INDOOR COIL OUTLET
TEMP. SENSOR
T4
OUTDOOR AMBIENT TEMP. SENSOR
CN15
T3
COIL TEMP. SENSOR
T2B
COMP. DISCHARGE TEMP. SENSOR
6
VALVE-D
6
VALVE-C
6
VALVE-B
P1
6
RED
VALVE-A
P2
ELECTRONIC
EXPANSION
P-2
VALVE
HEAT1
HEAT2
Y/G
CN6 CN5
CN9 CN8
ELECTRONIC
EXPANSION
VALVE
ELECTRONIC
EXPANSION
VALVE
ELECTRONIC
EXPANSION
VALVE
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