Service Manual
170
WIRING DIAGRAMS
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS
UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO
DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
GSZ160601B*
USE N.E.C. CLASS 2 WIRE
COMP
ALTERNATE DOUBLE
POLE CONTACTOR ONLY
IO
T1
C
M
A
I
N
R
A
U
X
5
S
SR
SA
2
1
RCCF
SC
T2
C
L1
L2
(IF USED)
NOTE 2
CH
C
F
M
A
I
N
A
U
X
IO
CM
COLOR CODE
BK --------------- BLACK
BL/PK ---------- BLUE/PINK STRIPE
BR --------------- BROWN
OR --------------- ORANGE
PU --------------- PURPLE
RD --------------- RED
WH -------------- WHITE
YL --------------- YELLOW
YL/PK----------- YELLOW/PINK STRIPE
COMPON
ENT CODE
C --------------- CONTACTOR
CCR------------ COMPRESSOR CONTACTOR RELAY
CH ------------- CRANKCASE HEATER
CHS ----------- CRANKCASE HEATER SWITCH
CM ------------ OUTDOOR FAN MOTOR
CMR ---------- CONDENSER MOTOR RELAY
COMP -------- COMPRESSOR
CS ------------- COMPRESSOR SOLENOID
DC ------------- DEFROST CONTROL
DFT ----------- DEFROST THERMOSTAT
DT ------------- DISCHARGE THERMOSTAT
HPS------------ HIGH PRESSURE SWITCH
HVDR -------- HIGH VOLTAGE DEFROST RELAY
IO -------------- INTERNAL OVERLOAD
LPS ------------ LOW PRESSURE SWITCH
LVDR --------- LOW VOLTAGE DEFROST RELAY
LVJB ---------- LOW VOLTAGE JUNCTION BOX
RCCF --------- RUN CAPACITOR FOR COMPRESSOR & FAN
RVC ----------- REVERSING VALVE COIL
SA ------------- START ASSIST
SC ------------- START CAPACITOR FOR COMPRESSOR (OPTIONAL)
SR ------------- START RELAY FOR COMPRESSOR (OPTIONAL)
CONTROLS SHOWN WITH THERMOSTAT IN ’OFF’ POSITION.
OUTDOOR POWER SUPPLY
SEE RATING PLATE
WIRING CODE
FACTORY WIRING
HIGH VOLTAGE
LOW VOLTAGE
OPTIONAL HIGH VOLTAGE
F
IELD WIRING
HIGH VOLTAGE
LOW VOLTAGE
CONTROL BOX
SC
RD
BL
L2
T2
L1
T1
C
BK
BK
BK
RD
BL
RD
RCCF
BR
SR
5
2
1
BK
YL
BL
BK
BR
PU
BK
YL/PK
LPS
DF1
DF2
(HIGH)
CH
LVDR
R
Y
HPS
O
W2
R
(
L
O
W
)
5
4
2
HVDR
CMR
(HIGH)
(LO
W)
RD
BK
YL/PK
CMR
BL
RD
BK
1
3
4
2
5
RD
RD
RD
BKBK
BL
YL/PK
BL
BK
CHS
LPS
PS2
R-PS1
O
W
CCR
Y
Y2
C
Y2
CS
FIELD LOW VOLTAGE CONNECTIONS
BK
BK
RD
SA
(IF USED)
NOTE 2
BL/PK
DFT
BK
RVC
BK
RD
BK
DT
RD
RD
BL
BK
GR
BL/PK
BK
DT
HPS
CS
C
Y2
T1
L1
T2
L2
CNT
DFT
C
DC
DFT
C
RVC
1
3
R-DFT
O-RV
CMR
C-RV
C
0140R00172-E
DC
R
DF1
DF2
0
0-RV
C-RV
W
LVDR
HVDR
CCR
CNT
0
DFT
R-DFT
R-PS1
Y
Y
C
R
C
C
PS2
RD
RD
EQUIPMENT
GROUND
NOTE 4
NOTES:
1) TO INDOOR UNIT LOW VOLTAGE TERMINAL
BLOCK AND INDOOR THERMOSTAT.
2) START ASSIST FACTORY EQUIPPED WHEN
REQUIRED.
3) THE COMMON SIDE OF LOW VOLTAGE SHALL
NOT BE GROUNDED.
4) USE COPPER CONDUCTOR ONLY.
5) CRANKCASE HEATER MAY NOT
HAVE ADDITIONAL GROUND WIRE.
6) CRANKCASE HEATER & CRANKCASE
HEATER SWITCH ARE FACTORY
INSTALLED OPTION.
SEE NOTE 6
YL
YL/PK
BL/PK
OR
RD
BL
YL
O
R
C
Y2
ALTERNATE
DOUBLE POLE
CONTACTOR
CHS
CH
SEE NOTE 1
BL
B
K
IO
AUX
MAIN
CM
H
AUX
MAIN
COMP
C
S
R
SEE NOTE 6
SEE NOTE 1
WH
W2
PU
Y
LVJB
RD
RD
PU
YL
YL
YL
RD
RD
BKRD
YL
BL/PK
YL/PK
OR
WH
PU
INDOOR POWER SUPPLY
CF