Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
WIRING CODE
FACTORY WIRING
HIGH VOLTAGE
LOW VOLTAGE
HIGH VOLTAGE
FIELD
OPTIONAL HIGH
VOLTAG
E
COLOR CODE
BK --------------- BLACK
BL --------------- BLUE
BL/PK ---------- BLUE/PINK STRIPE
BR --------------- BROWN
OR --------------- ORANGE
PU --------------- PURPLE
RD --------------- RED
WH -------------- WHITE
YL --------------- YELLOW
YL/PK ---------- YELLOW/PINK STRIPE
1
3
4
6
E11
E16
GR/YL
BL
BR
RELAY
RELAY
RELAY
HERM
COM
START
RUN
230 VAC SUPPLY
L1
L2
E13
L2 OUT
L2
L1
E10
R
C
START
E5
E8
CAP COM
CH
E21
E17
START
RLY
WH
UC BOARD
FUSE
O
L
R
C
W1
Y1
E2
Y2
FAN
RUN
RELAY
RELAY
1
2
E29
E28
E26
E24
E23
E22
E14
HIGH
RVS
LPCO
HPCO
E47
E1
OAT
OCT
OAS
OCS
(HEAT PUMP ONLY)
WH
BL
BL
WH
YL
YL
BR
GND
LOW VOLTAGE
BARRIER
BL/PK
BK
YL/PK
BK
YL/PK
BK
RD
BK
BK
BK
BL/PK
RCCF
BK
YL
RD
CONTROL BOX
O
L
Y2
Y1
W1
C
O
L (OPTIONAL)
Y2
Y1
W1
C
LEGACY INDOOR THERMOSTAT
C
R
2
1
C
R
2
1
R
R
C
INDOOR POWER SUPPLY 24 VAC
COMMUNICATING INDOOR THERMOSTAT
INDOOR POWER
SUPPLY 24 VAC
TO INDOOR
COMMUNICATING PCB
THIS WIRING SCHEMATIC SHOWS THE LEGACY WIRING
FROM THE FACTORY. THE WIRES GO TO INDOOR
THERMOSTAT AS SHOWN IN "LEGACY INDOOR
THERMOSTAT". TO WIRE THE SYSTEM IN COMMUNICATING
MODE, THE INSTALLER HAS TO WORK THE WIRING AS
SHOWN IN "COMMUNICATING INDOOR THERMOSTAT".
REFER TO THE IO MANUAL LOCATED IN
COMMUNICATING THERMOSTAT KIT FOR MORE DETAILS.
FROM
OUTDOOR
UNIT
GND
L1
L2
BK
YL
YL
CM
RES
2
5
1
SR
SC
OPTIONAL HARD START
L1
L2
K2
C
R
S
COMP
R
S
1
2
5
CCH
SC
C
UC CONTROL
HERM
CAP COM
SR
OPTIONAL HARD
START
K6
ECM FAN
MOTOR
C
CHS
BK
BK
RD
RD
RD
YL
BK
RD
0140R00192 - E
RD
BL
WH
PU
YL
OR
FROM
OUTDOOR
UNIT
R
GR/YL
BK
1
2
R
C
E25
RD
LPS
HPS
RVS
COMPONENT CODE
C --------------- CONTACTOR
CH ------------- CRANKCASE HEATER
CHS------------ CRANKCASE HEATER SWITCH
CM ------------ CONDENSER FAN MOTOR
COMP -------- COMPRESSOR
CS ------------- COMPRESSOR SOLENOID
DT ------------- DISCHARGE THERMOSTAT
HPS ----------- HIGH PRESSURE SWITCH
IO -------------- INTERNAL OVERLOAD
LPS ---------- LOW PRESSURE SWITCH
OAS ----------- OUTDOOR AIR SENSOR
OCS------------OUTDOOR COIL TEMP SENSOR
RCCF --------- RUN CAPACITOR FOR COMPRESSOR & FAN
RVS ----------- REVERSING VALVE SOLENOID
SC ------------ START CAPACITOR FOR COMPRESSOR(OPTIONAL)
SR ------------- START RELAY FOR COMPRESSOR (OPTIONAL)
SEE NOTE 3
NOTE 1
NOTES:
1. USE COPPER SUPPLY WIRES ONLY.
2. USE 40VA TRANSFORMER MINIMUM FOR SYSTEM
3. IF DT IS NOT PRESENT, HPS BL/PK WIRE GOES DIRECTLY
TO TERMINAL E29.
4. CONTROLS SHOWN WITH THERMOSTAT IN "OFF" POSITION.
5. COMMON SIDE OF 24VAC CONTROL CIRCUIT MUST BE
GROUNDED.
6. USE N.E.C. CLASS 2 WIRES.
SEE NOTE 1
TO FIELD LOW
VOLTAGE
CONTROL
WIRES. SEE
NOTES 2 AND 5
HERM
C
RUN
CAPACITOR
FAN
HIGH VOLTAGE AREA
LOW VOLTAGE AREA
CHS
CH
BK
RD
H
FC
BK
YL
DT
O
L
R
C
W1
Y1
E2
Y2
1
2
LPS
E22
E23
E24
E26
E47
E1
HPS
OCS
OAS
DT
RVS
E28
E29
E14
CS
1
3
4
6
E11
CM
NOTE 1
(HEAT PUMP ONLY)
C
R
S
AUX
COMP
CS
Y2
MAIN
C
SEE NOTE 6
SEE NOTE 6
SEE NOTE 6
SEE NOTE 6
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