Service Manual

64
WIRING DIAGRAMS
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS
UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO
DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
0140G04501-A
G
COMPONENT LEGEND
ALS AUXILLARY LIMIT SWITCH
CCONTACTOR
CH CRANKCASE HEATER
CHS CRANKCASE HEATER SWITCH
CM CONDENSER MOTOR
COMP COMPRESSOR
DC DEFROST CONTROL BOARD
DFT DEFROST THERMOSTAT
DR DEFROST RELAY
EM EVAPORATOR MOTOR
FFUSE
FS FLAME SENSOR
GND EQUIPMENT GROUND
GV GAS VALVE
HPS HIGH PRESSURE SWITCH
IIC INTEGRATED IGNITION CONTROL
IGN IGNITOR
LPS LOW PRESSURE SWITCH
LS LIMIT SWITCH
OTP OUTDOOR THERMOSTAT P LUG
P1 9 PIN CONNECTOR PLUG
P2 6 PIN CONNECTOR PLUG
PS PRESSURE SWITCH
RCCF RUN CAPACITOR COMPRESSOR / FAN
RS ROLLOUT SWITCH
RVC REVERSING VALVE COIL
TR TRANSFORMER
VM VENT MOTOR
F
ACTORY WIRING
NOTES
1. REPLACEMENT WIRE MUST BE THE SAME SIZE AND TYPE OF
INSULATION AS ORIGINAL (AT LEAST 105°C). USE COPPER
CONDUCTOR ONLY.
2. FOR 208V TRANSFORMER OPERATION MOVE BLACK WIRE FROM
TERMINAL 3 TO TERMINAL 2 ON TRANSFORMER.
3. FOR 208V VENT MOTOR OPERATION, REMOVE BLUE LEAD FROM
INDUCER LOW TERMINAL. MOVE BLACK LEAD FROM PARK TERMINAL
TO INDUCER LOW TERMINAL, AND PLACE BLUE LEAD ON PARK.
4. USE COPPER CONDUCTORS ONLY.
++ USENECCLASS2WIRE.
5. FOR OUTDOOR THERMOSTAT, REMOVE PLUG FROM HARNESS AND
CONNECT PLUG FROM OUTDOOR THERMOSTAT TO HARNESS.
6. TO CHANGE AIRFLOW MOVE YELLOW WIRE (COOLING / HEAT PUMP),
WHITE WIRE (LOW STAGE GAS), OR BROWN WIRE (HIGH-STAGE GAS)
TO SPEED TAP T1, T2, T3, T4, OR T5 AT EVAPORATOR MOTOR.
REFER TO UNIT AIRFLOW TABLES FOR TO DETERMINE THE
APPROPRIATE SPEED TAP FOR APPLICATION. UNITS SHIPPED WITH
YELLOW, WHITE, AND BROWN ON T4, T1, AND T2 RESPECTIVELY.
7. CRANKCASE HEATER AND CRANKCASE HEATER SWITCH FACTORY
EQUIPPED WHEN REQUIRED.
8. DOUBLE POLE CONTACTOR SHOWN. SINGLE POLE CONTACTOR
COULD BE FACTORY EQUIPPED AS AN ALTERNATE CONFIGURATION.
LINE VOLTAGE
OPTIONAL HIGH
VOLTAGE
HIGH VOLTAGE
F
IELD WIRING
LOW VOLTAGE
LOW VOLTAGE
BK BLACK
W
IRE CODE
PK PINK
OR ORANGE
GR GREEN
BR BROWN
BL BLUE
RD RED
WH WHITE
YL YELLOW
PU PURPLE
COOL
HI HEAT
LO HEAT
P2
2
6
3
1
2
8
6
3
1
2
L1
L1
HI
LO
HI
DR
O
C
HI
M
RS
PS
LS
ALS
TR
EM
VM
H
F
C
L2
T2
208-230/1/6 0
CM
L1
R
T1
S
C
SUPPLY VOLTAGE
P1
-
CHECK
CHECK FOR SHORTS IN
FLAME SENSOR WIRING
-NORMAL FLAME PRE SENT
DIAGNOST IC
LED - AMBER
-
GAS PRESSURE
FLAME SEN SOR
GAS VALVE
GAS FL OW
CHECK GAS VAL VE
ON
OFF
1FLASH
2 FLASHES
FALS E FLAME DETECTED
LOW FLAME SIGNAL
NO FLAME PRESENT
STATUS
CHECK
PSW /LOC OPEN9FLASHES
CHECK JUMPER BE TW EEN
1AND4ON6-CIRCUIT
CONNECTORIDT/ODT OPEN8FLASHES
CHECK AU XILIARY LIMIT SW .
CHECK MAIN LIMIT SWITCH
LIMIT OPEN 5 TIMES IN
SAME CALL FOR HEAT
3MINCOMP.SHORT
CYCLE DELAY
COMPR . SHORT CYCLE DELAY
6FLASHES
DIAGNOST IC
LED - RED
7FLASHES
STATUS
CHECK
DIAGNOSTIC
LED - RED
CH ECK FOR SH OR TS IN
FLAME SENSOR WIRING
CHECK GAS VALVE
CH ECK RO LLOU T LIM IT SW .
CHECK AUXILIARY LIMIT SW.
CH EC K M A IN LIMI T SW ITCH
CHECK WIRING FOR SHOR TS
CHECK PRESSURE SWITCHPRESSURE SW ITCH CLOSED
CHECK VENT MOTOR
CH ECK TUB ING
CHECK FUSE(S)
CHECK INPUT POWER
-
GAS PRE SSURE
FLAME SEN SOR
GA S VA LVE
GAS FL OW
CHECK PRESSURE SWITCH
OFF
ON
1FLASH
3FLASHES
2FLASHES
4FLASHES
5 FLASHES
FALS E FLAME DETE CTED
OPEN LIM IT SW IT CH
WITHOU T INDUCER ON
PRESSURE SW ITCH OPEN
IGNITION FAILURE
NORMAL OPER ATION
NO POWER OR
INTERNA L CONTROL
FAULT
STATUS
CHECK
C
C
F
Y1
RC
W2
W1
TO
MICRO
TO
MICRO
L1
L2
CH ECK OPT ION AL
REFRIGERANT SW ITCHES
CHECK REFRIGERANT
SWITCHES FOR LOSS OF
CHARGE OR HIGH HEAD
PRESS URE
HPS
LPS
DF1
HVDR
DC
DF2
ODF
CHS
INDUCER
IIC
PARK
3
4
1
2
5
1
2
3
5
4
1
6
G
Y1
R
C
Y2
W2
O
OTP 3
2
1
EM
C
LO
L2
L2
L2
L2
CH
GV
W1
RC
W1 GY1
Y2
W2
IIC
++
THERMOSTAT
5
7
9
SEE NOTE 2
SEE NOTE 3
SEE NOTE 5
SEE NOTE 6
SEE NOTE 7
SEE NOTE 8
P9
EQUIPMENT GROUND
FIELD GROUND
FIELD SPLICE
SWITCH (TEMP)
IGNITER
SWITCH (PRESS.)
OVERCURRENT
PROT. DEVICE
JUNCTION
TERMINAL
INTERNAL TO
INTEGRATED CONTROL
PLUG CONNECTION