Carrier 38YSA - Manual (Page 8)

FAN COIL
Y/Y2
W/W1
C
R 24 VAC HOT
24 VAC COM
HEAT STAGE 2
COOL/HEAT
STAGE 1
INDOOR FAN
CORPORATE
NON-PROGRAMMABLE
THERMOSTAT
MODEL HP
HEAT
PUMP
RVS COOLING
NOT USED
NOT USED
TROUBLE
OPTIONAL
OUTDOOR
SENSOR
CONNECTION
S2
S1
B
Y1
W3
G
R
L
FK4B
R
W2
Y Y/Y2
G
W2
C C
O/W2 O O
Y1
E
L
A94392
FAN COIL
Y/Y2
W/W1
G
R 24 VAC HOT
INDOOR FAN
HEAT STAGE 2
COOL/HEAT
STAGE 1
RVS COOLING
NOT USED
CORPORATE
PROGRAMMABLE
THERMOSTAT
MODEL HP
HEAT
PUMP
24 VAC COM
NOT USED
TROUBLE
OPTIONAL
OUTDOOR
SENSOR
CONNECTION
S2
S1
B
O/W2
R
L
FK4B
R
W2
Y Y/Y2
O
W2
G
C
E
L
Y1/W2 W3
O
C C
A94393
FAN COIL
Y/Y2
W/W1
C
R 24 VAC HOT
24 VAC COM
HEAT STAGE 2
COOL/HEAT
STAGE 1
INDOOR FAN
CORPORATE
NON-PROGRAMMABLE
THERMOSTAT
MODEL HP
HEAT
PUMP
RVS COOLING
NOT USED
NOT USED
TROUBLE
OPTIONAL
OUTDOOR
SENSOR
CONNECTION
S2
S1
B
Y1
W2
G
R
L
FK4C
R
W1
Y Y/Y2
G
W2
C C
O/W2 O O
Y1
A95330
FAN COIL
Y/Y2
W/W1
G
R 24 VAC HOT
INDOOR FAN
HEAT STAGE 2
COOL/HEAT
STAGE 1
RVS COOLING
NOT USED
CORPORATE
PROGRAMMABLE
THERMOSTAT
MODEL HP
HEAT
PUMP
24 VAC COM
NOT USED
TROUBLE
OPTIONAL
OUTDOOR
SENSOR
CONNECTION
S2
S1
B
O/W2
R
L
FK4C
R
W1
Y Y/Y2
O
W2
G
C
Y1/W2 W2
O
C C
A95331
Fig. 12—Typical Circuit Connections (continued)
8