_L1
K1-1
COMPRESSOR
:TI_CONTACTO R
__ _BLK
it DUAL
A1321 ___ CAPACITOR
208/230V-1-60
COMPRESB;ORt_
A1321R
7
CONDENSER
FAN MOTOR
COMPRESSOr
CONTACTOR
K1-2
L2
L
TRANSFORMER
INDOOR
SLOWER
MOTOR
NOTE:
IF ANY OF THE ORIGINAL WIRE IS REPLACED. THE
SAME SIZE AND TYPE WIRE MUST BE USED. USE
COPPER CONDUCTOR ONLY, MIN. 75°C WIRE.
WARNING-
ELECTRIC SHOCK HAZARD. UNIT MUST BE GROUNDED
IN ACCORDANCE WITH NATIONAL AND LOCAL CODES.
HEAT ANTICIPATION SETTING: 0.70 AMP
LINE VOLTAGE FIELD INSTALLED
DIAGNOSTICS
HIGH PRESSURE
SWITCH THERMOSTAT
(IF USED) YEL ): $1
l_ YEL
i
RED :24VAC
FUSE
The following ignition control board LED codes will
indicate normal or abnormal operations:
ORN
GRN
I_HUM A54 ;
ICM BOARD i
SEE i
I BLOWER SPEED i
:=EM
CHART
i
i ADJUST HEAT COOL I
_O NORM o o A Ao "
: (a B ">oB_ I
pY2 0 o c o-, c oo i
(TEST) o D > D,0
L,,
IIIIIIIIIIIIIIII
INDOOR BLOWER |
MOTOR B3J
Blower Speed Chart
Unit Factory Shipped Settings
SLOW FLASH Normal operation, no call for heat.
FAST FLASH Normal operation, call for heat.
2 FLASH System lockout.
3 FLASH Pressure switch senses incorrect pressure.
4 FLASH Main limit open or rollout switch open.
5 FLASH Flame sensed and gas valve not energized,
STEADY Internal failure (micro-controller failure; self check),
Connection Diagram
Single Stage Heat, Variable Speed, Single Phase
PIN 48107-001
Cooling
Input
24
30
36
36
42
42
48
48
48
60
60
60
Heating
Input
68
68
68
90
83
110
83
110
138
83
110
138
ADJUST
NORM
NORM
NORM
NORM
NORM
NORM
NORM
NORM
NORM
NORM
NORM
NORM
HEAT
A
A
B
A
C
C
C
C
A
C
C
A
COOL
B
A
A
A
C
C
B
B
B
A
A
A
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