Low-Voltage Circuit Fusing And Reference - Carrier 40FKA Installation Instructions Manual

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.
SEC1 SEC2
TM
EASY SELECT
AUX HEAT KW/CFM
0-30 0-20 0-10 0-5
1075 875 725 625
VIO
AC/HP SIZE
036 030 024 018
BLU
SYSTEM TYPE
AC HP-COMFORT HP-EFF
ORN
AC/HP CFM ADJUST
NOM LO HI
BLK
ON/OFF DELAY
0 30 0
ENH
90 90 0
WHT
CONTINUOUS FAN
LO MED HI YEL
YEL
CEBD430226-01B CESS430226-01B
HEATER/MOTOR
12-PIN MATE-N-LOCK
ELECTRIC HEAT CONNECTOR
Fig. 16—PCB Wiring Arrangement
J1
D
H
R
J2
W
1
W
2
Y
1
Y/Y
2
G
O
C
AUX1 HUM1
AUX2 HUM2
24VAC
GRY
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
10
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