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Carrier 40FKA - Low-Voltage Circuit Fusing and Reference

Carrier 40FKA
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ON/OFF DELAY SELECT DESIRED TIME DELAY PRO-
FILE
Four motor operation delay profiles are provided to customize and
enhance system operation. (See Fig. 19, E as indicated)
Selection options are:
1. The standard 90 sec off delay (Factory setting) at 100 percent
airflow.
2. No delay option used for servicing unit or when a thermostat
is utilized to perform delay functions.
3. A 30 sec on delay with no airflow/90 sec off delay at 100
percent airflow profile is used when it is desirable to allow
system coils time to heat-up/cool-down in conjunction with
the airflow.
4. ENH, enhanced selection, provides a 30 sec on delay with no
airflow/ plus 150 seconds at 70 percent airflow/no off delay
for added comfort. (This profile will minimize cold blow in
heat pump operation and could enhance system efficiency.)
CONTINUOUS FAN SELECT DESIRED FAN SPEED
WHEN THERMOSTAT IS SET ON CONTINUOUS FAN
1. LO speed factory setting, 50 percent cooling mode airflow
2. MED speed move connector to MED, 65 percent cooling
mode airflow.
3. HI speed move connector of HI, 100 percent cooling mode
airflow. (See Fig. 19, F as indicated.)
LOW-VOLTAGE CIRCUIT FUSING AND REFERENCE
The low-voltage circuit is fused by a board-mounted 5-amp
automotive fuse placed in series with the transformer SEC2 and
Fig. 16—PCB Wiring Arrangement
A95276
EASY SELECT
D
H
R
W
1
W
2
Y
1
Y/ Y
2
G
O
C
HEATER/MOTOR
CEBD430226-01B CESS430226-01B
AUX HEAT KW/CFM
0-30
1075
SEC1 SEC2
J1
J2
AC/HP SIZE
036 030 024 018
AC
HP-COMFORT
HP-EFF
NOM HI
ENH
LO
SYSTEM TYPE
AC/HP CFM ADJUST
ON/OFF DELAY
CONTINUOUS FAN
MED HI YELLO
AUX1 HUM1
AUX2
24VAC
GRY
HUM2
YEL
WHT
BLK
ORN
BLU
VIO
0-20
875
0-10
725
0
90
30
90
0
0
0-5
625
TM
12-PIN MATE-N-LOCK
ELECTRIC HEAT CONNECTOR
10

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