Daikin M Series, Service And Troubleshooting

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WIRING DIAGRAMS
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
49
0140G04501-B
G
COMPONENT LEGEND
ALS AUXILLARY LIMIT SWITCH
C CONTACTOR
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
F FUSE
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 PLUG
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
FACTORY 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.
++
USE NEC CLASS 2 WIRE.
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
FIELD WIRING
LOW VOLTAGE
LOW VOLTAGE
BK BLACK
WIRE 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
C
R
W Y
O
C
HI
M
RS
PS
LS ALS
TR
EM
VM
H
F
RCCF C
L2
T2
208-230/1/60
CM
L1
R
T1
S
COMP
C
SUPPLY VOLTAGE
P1
-
REPLACE CONTROL
CHECK
CHECK FOR SHORTS IN
FLAME SENSOR WIRING
- NORMAL FLAME PRESENT
DIAGNOSTIC
LED - AMBER
-
GAS PRESSURE
FLAME SENSOR
GAS VALVE
GAS FLOW
CHECK GAS VALVE
ON
OFF
1 FLASH
2 FLASHES FALSE FLAME DETECTED
LOW FLAME SIGNAL
NO FLAME PRESENT
STATUS CHECK
PSW/LOC OPEN 9 FLASHES
CHECK JUMPER BETWEEN
1 AND 4 ON 6-CIRCUIT
CONNECTOR IDT/ODT OPEN 8 FLASHES
CHECK AUXILIARY LIMIT SW.
CHECK MAIN LIMIT SWITCH LIMIT OPEN 5 TIMES IN
SAME CALL FOR HEAT
3 MIN COMP. SHORT
CYCLE DELAY
COMPR. SHORT CYCLE DELAY
6 FLASHES
DIAGNOSTIC
LED - RED
7 FLASHES
STATUS
CHECK DIAGNOSTIC
LED - RED
CHECK FOR SHORTS IN
FLAME SENSOR WIRING
CHECK GAS VALVE
CHECK ROLLOUT LIMIT SW.
CHECK AUXILIARY LIMIT SW.
CHECK MAIN LIMIT SWITCH
CHECK WIRING FOR SHORTS
CHECK PRESSURE SWITCH PRESSURE SWITCH CLOSED
CHECK VENT MOTOR
CHECK TUBING
CHECK FUSE(S)
CHECK INPUT POWER
-
GAS PRESSURE
FLAME SENSOR
GAS VALVE
GAS FLOW
CHECK PRESSURE SWITCH
OFF
ON
1 FLASH
3 FLASHES
2 FLASHES
4 FLASHES
5 FLASHES FALSE FLAME DETECTED
OPEN LIMIT SWITCH
WITHOUT INDUCER ON
PRESSURE SWITCH OPEN
IGNITION FAILURE
NORMAL OPERATION
NO POWER OR
INTERNAL CONTROL
FAULT
STATUS
CHECK
C
C
F
Y1
R C W2
W1
TO
MICRO
TO
MICRO
L1
L2
CHECK OPTIONAL
REFRIGERANT SWITCHES
CHECK REFRIGERANT
SWITCHES FOR LOSS OF
CHARGE OR HIGH HEAD
PRESSURE
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
T5
T1
T3
T2
EM C
O-RV
CNT
C-RV
R-DFT
PS2
DC
R-PS1
RVC
DFT
C
DFT
LO
L2
L2
L2
L2
CH
GV
W1
R
C W1
G Y1 Y2 W2
IIC
T4
++
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
(A/GPDM3[24-48]***41A*)