Carrier 24APA7 Performance Wiring Diagram

24APA7
Performancet Series 2---Stage Air Conditioner
with Puronr Refrigerant
2 to 5 Nominal Tons
CS
BLU RED
TRAN
BRN
230V
BLK
CCH
BLK BLK
CONT
L1
208/230 1Ø 11 21
L2
POWER
23 23
SUPPLY
C C
EQUIP GND
RED/WHT
BRN/YEL
YEL/PNK 2
YEL/PNK 1
LPS
PL2
BLU/PNK 2
1
BLU/PNK
HPS
PL3
3
1
PL4
BRN
T1
4
BRN/YEL C
3
LO
RED/WHT 2
HI
BLU 1
PL5
OPTIONAL
NON-COMMUNICATING
CONTROL
SEE NOTE #10
R C
W1 Y1 Y2 O
LEGEND
FACTORY POWER WIRING
FACTORY CONTROL WIRING
FIELD CONTROL WIRING
FIELD POWER WIRING
COMPONENT CONNECTION
FIELD SPLICE
JUNCTION
CAPACITOR
CAP
CB CIRCUIT BOARD
CRANKCASE HEATER
CCH
CHS CRANKCASE HEATER SWITCH
SYSTEM COMMUNICATION
COMM
COMP COMPRESSOR
* MAY BE FIELD INSTALLED
NOTES:
1. Compressor furnished with inherent thermal protection.
2. To be wired in accordance with National Electric Code (N.E.C.) and local codes.
3. Outdoor unit control requires a minimum of 27 VA, 24 VAC control power.
4. Use copper conductors only. Use conductors suitable for at least 75ºC (167ºF).
5. If indoor section has a transformer with a grounded secondary, connect the grounded
side to "C".
6. If any of the original wire, as supplied, must be replaced, use the same or equivalent wire.
7. Check all electrical connections inside control box for tightness.
8. Do not attempt to operate unit until service valves have been opened.
9. In case of a communicating indoor system, USE WITH INFINITY / EVOLUTION USER
INTERFACE AS LISTED IN PRE-SALE LITERATURE.
10. In case of non-communicating indoor system disconnect factory provided wires from A, B, C,
and D terminals. Use factory provided wires to connect to Y1, R, C, and Y2 as required by
Installation Instructions. Cap or remove unused factory provided wires.
11. For Communicating Control only.

Wiring Diagram

CONNECTION DIAGRAM
BLU
RED
*SC
*SR
BRN
YEL
24V 1
2
5
CAP
F
COM
C
BLK
208V
YEL CHS
BLK
H
VIO
BLK
BLK
YEL
YEL
YEL
YEL
BLU
L1 ODF CCH
VS VR L2
PWM1
BLU BRN YEL VIO BLK RED
PWM2
CB
C
TIME
DEFROST
RVS
(MIN) TIME
SEV
SR
C
LED
LED
OCT
ON
OFF
(DEFAULT)
QUIET
OAT
COMM STATUS
SHIFT
AS PROVIDED BY
MANUFACTURER
FORCED
SEE NOTE #11
DEFROST
A B C D PL8
R C W1 Y1 Y2 O
PL7
MODEL PLUG
* UC (WITH INFINITY/EVOLUTION ONLY)
CONNECT TO
R AND Y2 ON
CONTROL BOARD
TO INDOOR UNIT
CONT CONTACTOR
COMP HIGH CAP SOLENOID
CS
HPS HIGH PRESSURE SWITCH
LOW PRESSURE SWITCH
LPS
* LS LIQUID SOLENOID
THERMISTOR (OUTDOOR AIR)
OAT
OCT THERMISTOR COIL
OFM OUTDOOR FAN MOTOR
REVERSING VALVE SOLENOID
RVS
* SC START CAPACITOR
SOLENOID EXPANSION VALVE
SEV
* SR START RELAY
SYSTEM FUNCTION LIGHT
STATUS
TRAN TRANSFORMER
UTILITY CURTAILMENT
* UC
Fig. 1 – Wiring Diagram — Model sizes 2 - - 5 tons, 208/230- -1
SCHEMATIC DIAGRAM (LADDER FORM)
L1
CCH
CONT
COMP
BRN
EQUIP
R
C
11 21
GND
S
*SR
BLU
YEL
OFM
BLK
2
YEL
1
LPS
PL2
2
1
HPS
PL3
BLU
3
PL1
SR
1
1
2
PL4
3
4
T1
OCT
4
C
3
BRN
LO
1
2
CONT
2 HI 1
BRN
3
PL5
BLK
4
5
CS
BLK
PL6
PL7
OAT
MODEL MODEL
SIZE
024
036
048
060
FLASH CODE FAULT DEFINITION
On, No Flash Standby
Low Stage
1, Pause
2, Pause High Stage
ODU Fan Delay Defeat Not Active
3, Pause
4, Pause ODU Fan Delay Defeat Active
Brown out is Disabled
5, Pause
6, Pause Brown out is Active
System Communications Failure
16
25 Invalid Model Plug
High Pressure Switch Trip
31
32 Low Pressure Switch Trip
Control Fault
45
46 Brown out (230V)
Short flashes indicate the first digit in the status code, followed by long flashes indicating the second digit of
the status code.

UNIT OPERATION

This control board contains a five minute short cycle protector. A five minute delay will
occur between compressor OFF/ON cycles. To bypass delay, short forced defrost pins
for 1 second then release.
The crankcase heater is energized during off cycle below 65ºF.
CHS
TRAN 230V
C
230V
R CAP
C
F
S
COMP
C
H
1
2
OFM
*SC
5
YEL
VS VR L2 L1 ODF CCH
PWM1
BLU BRN YEL VIO BLK RED
PWM2
CB
BLU
PL1
C
TIME
DEFROST
RVS
(MIN) TIME
SEV
C
LED
LED
ON OCT
OFF
(DEFAULT)
QUIET
SHIFT OAT
COMM STATUS
AS PROVIDED BY
MANUFACTURER
FORCED
SEE NOTE #11
DEFROST
PL8
A B C D
R C W1 Y1 Y2 O
MODEL PLUG
TO INDOOR UNIT
COMPONENT ARRANGEMENT
MODEL PLUG CHART
CONTROL
PIN RESISTANCE (K )
BOARD
PLUG
1 - 4 (R1) 2 - 3 (R2)
HK70EZ
TRANSFORMER
040 18 75
042 18 120
044 18 180
CAPACITOR
046 18 270
FLASH CODE FAULT DEFINITION
No 230v with Call to Run
47
53 Outdoor Air Temp Sensor
Coil Temp Sensor
55
56 Temp Sensor Range Error
Low Stage Thermal Cutout
71
72 High Stage Thermal Cutout
Contactor Shorted
73
74 Contactor Open (No 230v to Comp)
Low Stage Thermal Lockout (4 HRS)
81
82 High Stage Thermal Lockout (4 HRS)
Low Pressure Lockout (4 HRS)
83
84 High Pressure Lockout (4 HRS)
337894-101 REV. B
L2
CONT
23
23
1
2
3
4
OCT
1
2
3
OAT
4
5
PL6
CONTACTOR