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HI
PU
GY
PM
READ CODES FROM LEFT TO RIGHT
INTEGRATED CONTROL MODULE
W2 W/W1 R
ECM MTR
HARNESS
Status
Internal Faults or IRQ Loss
Lockout Due to Excessive Retries Recycle
Low Stage Pressure Switch Stuck Closed
Low Stage pressure Switch Open
Open High Limit Switch
Flame Detected When no Flame Should be
Open Fuse
Low Flame Signal
Ignitor Relay Fault
High Stage Pressure Switch Stuck Closed
High Stage Pressure Switch Open
Reversed Line Polarity or Grounding Error
Internal Gas Valve Error
External Gas Valve Error
Open Rollout Switch
ignitor Open
Inducer Relay Error
TWIN Error
GROUNDING ERROR
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
BK
E21
E34
E24
G
R
Y/Y1 Y2
BK
BK
CHASSIS
GROUND
Seven Segment Display
Seg#
Seg#
Seg#
E
E
E
E
E
0
E
E
1
E
E
2
E
E
3
E
E
4
E
E
5
E
E
6
E
E
L
E
E
8
E
E
9
E
E
A
E
E
b
E
E
C
E
1
1
E
E
N
E
E
j
E
E
H
E
1
0
46
Wiring Diagram
POWER BEFORE
PROPERLY POLARIZED
40 VA
TRANSFORMER
TH (3)
HLO (1)
C
PS1(5)
NO
NO
C
HLI (8)
MVL (10)
MVH (4)
C
MVC (11)
TR (7)
TO
R
INDOOR
AIR
TO
CIRCULATOR
MICRO
BLWR
INTEGRATED CONTROL MODULE
NOTES:
1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0.7 AMPS.
2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED
WHEN SERVICING.
3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE
MUST BE REPLACED IT MUST BE REPLACED WITH WIRING MATERIAL
HAVING A TEMPERATURE RATING OF AT LEAST 105 C. USE COPPER
CONDUCTORS ONLY.
4. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C.
AND LOCAL CODES.
5. TO RECALL THE LAST 6 FAULTS, MOST RECENT TO LEAST RECENT,
DEPRESS SWITCH FOR MORE THAN 2 SECONDS WHILE IN STANDBY
(NO THERMOSTAT INPUTS)
COLOR CODES:
EQUIPMENT GND
PK PINK
FIELD GND
BR BROWN
FIELD SPLICE
WH WHITE
SWITCH (TEMP.)
BL BLUE
GY GRAY
IGNITER
RD RED
SWITCH (PRESS.)
YL YELLOW
OR ORANGE
OVERCURRENT
PU PURPLE
PROT. DEVICE
GN GREEN
JUNCTION
BK BLACK
TERMINAL
INTERNAL TO
INTEGRATED CONTROL
PLUG CONNECTION
LOW VOLTAGE (24V)
LOW VOLTAGE FIELD
HI VOLTAGE (115V)
HI VOLTAGE FIELD
PM
C
HI
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Troubleshooting
