Carrier Programmable Thermostats - Page 7

→Fig. 13—Two-Speed Heat Pump
with Typical Fan Coil—Model 2S Thermostat
A96351
24 VAC HOT


FAN


HEAT STAGE 3


COOL/HEAT 
STAGE 2

RVS COOLING


COOL/HEAT 
STAGE 1
R
G
W/W1
Y/Y2
O/W2
Y1/W2
R
G
24 VAC COMM


RVS HEATING


TROUBLE


OUTDOOR

SENSOR

CONNECTION
C
B
L
S1
S2
C
Y2
C
W2
R
O
Y1
W3
L
MODEL 2S
THERMOSTAT
TYPICAL
FAN COIL
TWO-SPEED
HEAT PUMP
See notes 3, 6, 8, and 10
W2
Y/Y2
O
*
Y1
*
*
L
E
*
W3
→Fig. 14—Single-Speed Heat Pump
with FK4 Fan Coil and Special 3-Stage Electric Heat
—Model 2S Thermostat
A96352
24 VAC HOT


FAN


COOL/HEAT
STAGE 1

HEAT STAGE 2


HEAT STAGE 3


RVS COOLING
R
G
R
G
24 VAC COMM


RVS HEATING


TROUBLE


OUTDOOR

SENSOR

CONNECTION
C
B
L
S1
S2
C C
R
MODEL 2S
THERMOSTAT
FK4C
EASY SELECT
TERMINAL BOARD
J1
JUMPER
REMOVE
J2 JUMPER
FOR HEAT
STAGING
SINGLE-SPEED
HEAT PUMP
See notes 4 and 7
DH
Y1
W/W1
Y/Y2
O/W2
Y1/W2
Y
O
W2
W1
Y/Y2
O
W2
24 VAC HOT


HEAT STAGE 1


N/A


FAN


N/A


COOL STAGE 1
R
R
24 VAC COMM


N/A


TROUBLE


OUTDOOR

SENSOR

CONNECTION
C
B
L
S1
S2
C
G G
C
MODEL AC
THERMOSTAT
FK4C
EASY SELECT
TERMINAL BOARD
J1 JUMPER
J2 JUMPER
SINGLE-SPEED
AIR CONDITIONER
See notes 1 and 7
DH
Y1
O
Y1/W2
Y/Y2 YY/Y2
O/W2
W/W1 W1
W2
A96353
→Fig. 15—Single-Speed Air Conditioner
with FK4C Fan Coil—Model AC Thermostat
24 VAC HOT


FAN


HEAT STAGE 1


HEAT STAGE 2


COOL STAGE 1


N/A
R
G
R
G
24 VAC COMM


N/A


TROUBLE


OUTDOOR

SENSOR

CONNECTION
C
B
L
S1
S2
C C
MODEL HP
THERMOSTAT
FK4C
EASY SELECT
TERMINAL BOARD
J1
JUMPER
REMOVE
J2 JUMPER
FOR HEAT
STAGING
SINGLE-SPEED
AIR CONDITIONER
See notes 2 and 7
DH
O
Y1
Y/Y2 YY/Y2
O/W2
Y1/W2
W/W1 W1
W2
A96354
→Fig. 16—Single-Speed Air Conditioner
with FK4C Fan Coil—Model HP Thermostat
7