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W W i i r r i i n n g g D D i i a a g g r r a a m m s s
NOTES:
1. IF ANY OF THE ORIGINAL WIRING AS SUPPLIED WITH THIS FURNACE MUST BE REPLACED, IT MUST BE WITH WIRE
HAVING A TEMPERATURE RATING OF AT LEAST 105°C. WIRES 12, 18, 20, 48, 49, 50, 51, 92, 93 MUST BE RATED TO 250°C.
2. COOLING / HEAT PUMP SYSTEMS - Y1 AND/OR Y2 MUST CONNECT FROM THE THERMOSTAT TO THE IFC LOW
VOLTAGE TERMINALS FOR PROPER AIRFLOW. SEE IOM FOR FIELD WIRING.
3. THE INDOOR BLOWER MOTOR AIRFLOW TABLES ARE LOCATED IN THE IOM.
TO CHANGE AIRFLOW USE THE MENU/OPTIONS BUTTONS.
4. LINE CHOKE AND WIRE BK/28 ONLY USED ON MODELS WITH 1 HP MOTORS.
5. FLAME SENSE TEST PADS: 1 VDC = 1 MICROAMP. FLAME CURRENT CAN VARY
DEPENDING ON THE VOM THAT IS USED AND THE VOLTAGE SUPPLIED TO
THE FURNACE. THE ACCEPTABLE RANGE IS 0.75-3 MICROAMPS.
PS
GAS
VALVE
MV C
TNS
BL/2
WH/15
24v
120v
RD/6
BK/14
SEE NOTE 4
LINE CHOKE
BK/28
BK/27
3
2
EAC
HUM
LINE
24 / 120 VAC
3 2 1
MAY BE USED
SEE NOTE 6
FP
FP
10
YL/3
HLI
9
RD/9
MV
8
GND
7
MENU OPTION
RD/6
6
TH
BL/5
5
MVC
YL/52
4
HLO
OR/11
3
PS
BL/2
2
TR
1
ILI (NOT USED)
FLAME_PROBE
WH/12
IFC
LINE
BK BLACK
GR GREEN
FACTORY
WH WHITE
BR BROWN
24 V
WIRING
YL YELLOW
RD RED
LINE
FIELD
OR ORANGE
BL BLUE
24 V
WIRING
IGN HOT SURFACE
FUSE
IGNITER
RAF REVERSE
LC LINE CHOKE
AIR FLOW
PS PRESSURE
GROUND
** INTERNAL THERMAL PROTECTION
SWITCH
1 Stage Inducer with CTM Blower Motor
Status Codes
HOd
Heat Off Delay (sec)
IdL
Idle
Blower Tap for Continuous Fan
COF
C1.
Ht
Heating
COP
Blower Tap for 1st
Stage Compressor Mode
Blower Tap Number
tP
COF
Continuous Fan
Blower Tap for 2nd
C2.
Stage Compressor Mode
CP1
Cooling/Heat Pump Mode
dft
Defrost Mode
HtP
H1.
Blower Tap for Heating Mode
Menu Options
r
U
n
Run Test Mode
Orientation
Error Codes
Orn
Loss of IRQ or internal failures
Err
Active Alarm Menu
E01
L6F
Last 6 Faults (To Clear,
Retry exceeded (Failed to est flame)
E2.1
Hold Option Button 5 sec)
E2.2
Recycles exceeded (loss of
established flame or PS open x10)
Cr
Code Release Number
Cooling Off Delay (sec)
COd
E2.3
Gas Valve not energized when it
should be exceeded after 10 times
OdU
Outdoor Unit
18
FLAME_ROLLOUT1
YL/50
TO BURNER
BOX HARN
FLAME_ROLLOUT2
YL/47
YL/48
1
1
YL/50
YL/46
YL/49
2
2
RAF-1
THERMAL_LIMIT
YL/45
YL/49
BLOWER
RAF-2
HOUSING
GND
YL/45
COM
BK/39
L
1
BLOWER
G
2
MOTOR
WH/40
3
N
YL/WH/36
BL/WH/37
BK/WH/38
OR/WH/55
120v 60 Hz. 1 PH
1
2
3
4
5
6
7
8
9
10
11
12
POWER SUPPLY PER LOCAL CODE
1
2
3
4
5
6
7
8
9
10
11
12
JUNCTION BOX
X
BK/30
2
2
1
1
PANEL LOOP
WH/17
BUTT SPLICE-WITH HEAT SHRINK
1
4
3
2
1
SEE NOTE 1
NEUTRAL
1
1
S1
2
4 3
2
1
2
1
2
3
S2
BUTT SPLICE-WITH HEAT SHRINK
SEE NOTE 1
IGN-N
WH/21
4
WH/21
IND-N
1
3
BK/18
BK/22
IND-H
2
2
BK/22
IGN-H
1
RD/WH/23
TAP1
1
YL/WH/24
TAP2
2
BL/WH/25
TAP3
3
BK/WH/26
TAP4
4
INTEGRATED FURNACE CONTROL
OR/WH/56
TAP5
5
BL/57
GND
6
ELECTRICAL RATING
INPUT: 24VAC, 60 HZ.
H
LINE
TNS SEC. CURRENT: 450MA.
N
NEUTRAL
+ MV LOAD
GND
GROUND
MV OUTPUT: 1.5A @ 24 VAC
HLO
HIGH LIMIT
IND OUTPUT: 2.2 FLA, 3.5 LRA
OUTPUT
@120 VAC
HLI
HIGH LIMIT
IGN OUTPUT: 2.0 A @ 120 VAC
INPUT
CIRC. BLOWER OUTPUT:
PS
PRESSURE SWITCH
W R G B/C Y/Y1
Y2
14.5 FLA, 25 LRA @ 120 VAC
THERMOSTAT
INPUT
HUMIDIFIER & AIR CLEANER
IND
INDUCER
SEE NOTE 2
(DRY CONTACTS)
IFC
INTEGRATED
MAX. LOAD: 1.0A @ 120VAC
FURNACE
24 VAC OR 120 VAC MAY BE
CONTROL
USED
RAF REVERSE
FUSE: 5A
AIR FLOW
TH
24VAC (HOT)
TIMINGS
FRS FLAME ROLLOUT
TR
24VAC (COMMON)
PREPURGE: 0 SEC.
SWITCH
MVC MAIN VALVE
INTERPURGE: 60 SEC.
COMMON
POST PURGE: 5 SEC.
MVC MAIN VALVE
IGN WARMUP: 20 SEC.
FP FLAME PROBE
TNS
TRANSFORMER
IAP: 3; TFI: 5 SEC.
ILI
INDUCER LIMIT
RETRIES: 2 RECYCLES: 10
INPUT
HEAT ON DELAY: UP TO 30 SEC.
IGN
IGNITER
COOL ON DELAY: 0 SEC.
FP
FLAME PROBE
AUTO RESTART: 60 MIN.
AUTO RESTART PURGE: 60 SEC.
E3.1
Shorted Pressure Switch
E3.2
Open Pressure Switch
Open Thermal Limit, Rollout Switch,
E04
or Reverse Airflow Switch
E05
Flame detected, should not be present
E6.1
Voltage reversed polarity
E6.2
Bad Grounding
(1) Igniter relay fails
E6.3
(2) Igniter open
E7.1
Gas valve is energized whenit should be off
E08
Flame current is low, but still
strong enough to allow operation
(1) Gas valve not energized
E11
(2) Gas valve relay stuck closed
D345844P01 REV F
E12
Open fuse
120v 60 Hz. 1 PH
POWER SUPPLY PER LOCAL CODE
JUNCTION BOX
GND
S8X1
YL/48
YL/51
YL/51
BL/42
6
5
4
IFC
3
2
3
LINE-H
1
2
CIRC-H
1
TNS-H
4
TNS-N
3
CIRC-N
1
LINE-N
H
N
GND
1
IGN-H
X
X
X
2
IND-H
3
IND-N
4
IGN-N
1
TAP1
2
TAP2
BK/13
BK/29
3
TAP3
4
TAP4
5
TAP5
6
GND
VENT
MOTOR
1
ILI
(INDUCER)
**
2
TR
3
PS
4
HLO
5
MVC
6
TH
IGN
7
GND
8
MV
9
HLI
10
FP
W R G B/C Y/Y1
Y2
THERMOSTAT
FLAME_ROLLOUT2
YL
RAF-2
YL
YL
FLAME_ROLLOUT1
YL
H
N
LINE CHOKE
PANEL LOOP
BK
BK
1
1
BK
2
2
BK
BK
BK
WH
WH
WH
VENT
1
MOTOR
BK
2
(INDUCER)
BK
3
**
WH
IGN
WH
WH
BK
RD/WH
YL/WH
BL/WH
BK/WH
OR/WH
BL
TNS
BL
OR
24v
YL
BL
RD
GR
RD
YL
RD
WH
BL
THERMAL_LIMIT
YL
RAF-1
YL
DEFAULT BLOWER MOTOR TAP SELECTIONS
PS
COF (CONSTANT FAN): TAP 1
OR
CP1 (FIRST STAGE COOLING): TAP 3
CP2 (SECOND STAGE COOLING): TAP 7
HT (GAS HEAT): TAP 5
YL
S8XB-SVX001-1C-EN
S8X1
N
WH
G
L
BK
BLOWER
MOTOR
RD/WH
1
YL/WH
2
BL/WH
3
BK/WH
4
OR/WH
5
BL
COM
WH
120v
BK
BURNER
BOX GND
MV
C
GAS
VALVE
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