Carrier 38MGR Series Service Manual page 15

WIRING DIAGRAMS (CONT)
Size 24K
CN5
IPM BOARD
BLUE
BLUE
RED
BLUE
REACTOR
NOTE:Use the magnetic ring
(not supplied, optional part)
to hitch the connective cable Y/G
of indoor and outdoor units
after installation. one magnetic
ring is used for one cable.
CODE
CN3~CN4 Input: 230VAC High voltage
CN20,CN23,CN25 Output: Pin1 (Connection of the high voltage)---"S" Signal Pin2~Pin3 (230VAC High voltage)---IDU Power
P1~P2 Output: Connection of the REACTOR
CN1~CN2 Output: 230VAC High voltage---4 way Valve
CN5~CN6 Output: 230VAC High voltage---Compressor Crankcase Heater
CN8~CN9 Output: 230VAC High voltage---Chassis Crankcase Heater
P-1~P-2 Connection to the earth
CN18,CN19,CN22 Output: Pin1-Pin4: Pulse waveform (0-12VDC), Pin5, Pin6 (12VDC)---EEV
CN7 Input: Pin1 (0-5VDC), Pin2 (5VDC)--- Discharge Temp
CN17 Input: Pin3, Pin4 (5VDC), Pin2 (0VDC), Pin1, Pin5 (0-5VDC)-Conditioner and Ambient Temperature
CN15 Input: Pin1, Pin3, Pin5 (5VDC) Pin2, Pin4, Pin6 (0-5VDC)---IDU Pipe Temp
CN14 Input: Pin2, Pin4 (0VDC), Pin1, Pin3 (0-5VDC)---H/L Pressure Switch
CN12 Input: Pin1 (0-5VDC), Pin2 (5VDC)---Compressor Temp
CN29~L-OUT Output: 230VAC High voltage to IPM Board
Cn21 Connect to the IPM BOARD
CODE
CN4~CN5 Input: 230VAC High voltage
CN2~CN3 Output: Connection of the REACTOR
U~V~W Connect to compressor voltage among phases 0~200VAC
CN14 Connect to the DC FAN
CN1 Connect to the MAIN BOARD
38MGR-04SM
RED(BROWN)
BLUE
Y/G
CN14
BLACK
L1-IN
CN3
3
3
DC FAN
L1 L2
L1(A) L2(A) S(A)
Y/G
Fig. 15 — Size 24K - 3 Zone Max
Table 8 — Size 24K - 3 Zone Max Codes
Table 9 — Size 24K - 3 Zone Max Codes
Specifications subject to change without notice.
4
CN12 CN14
CN29
CompTop LOW/HIGH
L-OUT
MAIN BOARD
P-1
L2-IN
S-A S-B S-C
CN4
3 3
3
L1(B)
L2(B) S(B) L1(C)L2(C)S(C)
Y/G
Y/G
OUTDOOR UNIT MAIN BOARD
PART NAME
OUTDOOR UNIT IPM BOARD
PART NAME
A B C
INDOOR PIPE
OUT TEMP
T4
CN15
T3
T2B
6
VALVE-C
6
VALVE-B
P1
6
VALVE-A
P2
P-2
Y/G
4-WAY
HEAT1 HEAT2
CN1 CN2
CN6 CN5 CN9 CN8
OPTIONAL
REACT0R2 R05094A OPTIONAL
ELECTRONIC
EXPANSIVE
VALVE
ELECTRONIC
EXPANSIVE
VALVE
ELECTRONIC
EXPANSIVE
VALVE
15