Carrier 38MBRQ58A-3 - Wiring Diagrams

38MBR: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
4
WIRING DIAGRAMS
Size 36K
Fig. 2 — Wiring Diagram Size 36K
Table 2 — Wiring Diagram Size 36K Codes
CODE PART NAME
CN1~CN2
Input: 230VAC High voltage
CN5~CN6
Output: 230VAC High voltage
P-1
Connection to the earth
CN10~CN44
Output: 230VAC High voltage Chassis Crankcase Heater
CN4~CN40
Output: 230VAC High voltage Compressor Crankcase Heat
CN3~CN22
Output: 230VAC High voltage
CN43
Output: Pin3~Pin2, Pin4~Pin2 (230 VAC High voltage) For AC FAN
CN41~CN42
Output To AC FAN Capacitor
CN34
Output:-24VDC-24VDC
CN33
Input: Pin 1 (0-5VDC),Pin 2 (5VDC) Discharge Temperature Sensor
CN8
Input: Pin3, Pin4 (5VDC),Pin2 (0VDC),Pin1,Pin5 (0-5VDC) T3 & T4
CN9
Input: Pin2, Pin4 (0VDC),Pin1,Pin3 (0-5VDC) H/L Pressure Switch
CN20
Output: Pin1-Pin4: Pulse waveform(0-12VDC),Pin5, Pin6 (12VDC)
CN7
Output: Pin1 (12VDC),Pin2 (5VDC),Pin3 (EARTH)
COMP
FM1
MAIN BOARD
U
V
W
L
DRIVER BOARD
7
7
YELLOW
Applicable to the units
adopting DC motor only
CN52
CN6
SV
4-WAY1
BLUE
HEAT_D
HEAT_Y
OPTIONAL
3
BLACK
RED
BLUE
BLUE
YELLOW
BLACK
EEV
CN20
M
5
CN5
CN2
CN1
P-1
Y/
G
L1
L2
(1)L1
(2)L2
RED
L-PRO
T3
T4
H-PRO
TP
CN33
CN8
CN9
CN41
CN42
CN43
CN3
CN22
CN4
CN10
CN7
CN44
CN40
BLUE
BLUE
BLUE
RED
BLACK
BLACK
RED
CN51
CN53
CN54
RED
CN55
CN19
3
Y/G
Y/G
U
V
W
BLUE
KCALBKCALB
RED
BLACK
MAIN POWER
SUPPLY
TO INDOOR UNIT
POWER SUPPLY
CN34
XT1
TO INDOOR COMM. BUS
XT2
S1
S2
NOTE
shielded wire.
Please use 2-core
YELLOW
GRAY
2
LANOITPOLANOITPO
OPTIONAL