![background image](http://html.mh-extra.com/html/carrier/2s/2s_installation-start-up-and-operating-instructions-manual_2563972007.webp)
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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
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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
Y
Y/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
Y
Y/Y2
O/W2
Y1/W2
W/W1
W1
W2
A96354
→
Fig. 16—Single-Speed Air Conditioner
with FK4C Fan Coil—Model HP Thermostat
7