Wiring Diagram
24APA7
Performance
t
Series 2---Stage Air Conditioner
with Puron
r
Refrigerant
2 to 5 Nominal Tons
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.
CAP
CB
CCH
CHS
COMM
COMP
CAPACITOR
CIRCUIT BOARD
CRANKCASE HEATER
CRANKCASE HEATER SWITCH
SYSTEM COMMUNICATION
COMPRESSOR
NOTES:
* MAY BE FIELD INSTALLED
LEGEND
FACTORY POWER WIRING
FACTORY CONTROL WIRING
FIELD CONTROL WIRING
FIELD POWER WIRING
COMPONENT CONNECTION
FIELD SPLICE
JUNCTION
CONT
CS
HPS
LPS
* LS
OAT
OCT
OFM
RVS
* SC
SEV
* SR
STATUS
TRAN
* UC
CONTACTOR
COMP HIGH CAP SOLENOID
HIGH PRESSURE SWITCH
LOW PRESSURE SWITCH
LIQUID SOLENOID
THERMISTOR (OUTDOOR AIR)
THERMISTOR COIL
OUTDOOR FAN MOTOR
REVERSING VALVE SOLENOID
START CAPACITOR
SOLENOID EXPANSION VALVE
START RELAY
SYSTEM FUNCTION LIGHT
TRANSFORMER
UTILITY CURTAILMENT
HPS
LPS
208/230 1Ø
POWER
SUPPLY
EQUIP GND
L1
L2
RED/WHT
BRN/YEL
BLU
VIO
COMP
CCH
DEFROST
TIME
FORCED
DEFROST
2
3
C
RVS
QUIET
SHIFT
1
SEV
PL1
PL8
CB
VIO BLK RED
YEL
BRN
BLU
PWM2
PWM1
MODEL PLUG
LED
LED
COMM STATUS
120
60
30
30
60
TIME
(MIN)
1
2
4
PL5
3
HI
LO
C
BRN/YEL
BLU
RED/WHT
1
PL4
3
SR
1
2
PL3
1
2
PL2
YEL/PNK
YEL/PNK
BLU/PNK
BLU/PNK
HPS
LPS
L1
ODF
CCH
L2
VR
VS
90
4
C
1
2
3
4
5
OCT
OAT
OCT
OAT
PL6
BRN
BRN
BLK
BLK
1
3
2
ON
OFF
(DEFAULT)
OCT
OAT
EQUIP
GND
T1
BRN
HI
LO
C
CONT
CS
TRAN 24V
T1
TRAN 230V
BLU
YEL
TRAN
24V
230V
CS
208V
COM
RED
RED
BRN
BLK
BLK
BLK
BLK
YEL
BLK
BLK
YEL
BLU
YEL
YEL
YEL
CONNECT TO
R AND Y2 ON
CONTROL BOARD
* UC (WITH INFINITY/EVOLUTION ONLY)
11 21
23 23
C C
CHS
BLU
YEL
*SC
BRN
*SR
1
2
5
BLK
CAP
BLK
OFM
BRN
DEFROST
TIME
FORCED
DEFROST
2
3
C
RVS
QUIET
SHIFT
1
SEV
PL1
PL8
CB
PWM2
PWM1
MODEL PLUG
LED
LED
COMM STATUS
120
60
30
30
60
TIME
(MIN)
1
2
4
PL5
3
1
PL4
3
SR
1
2
PL3
1
2
PL2
L1
CCH
L2
VR
VS
90
4
C
1
2
3
4
5
OCT
OAT
PL6
1
3
2
ON
OFF
(DEFAULT)
COMPONENT ARRANGEMENT
CONTACTOR
TRANSFORMER
CAPACITOR
CONTROL
BOARD
024
036
048
040
042
044
18
18
18
75
120
180
MODEL MODEL
PLUG
HK70EZ
SIZE
MODEL PLUG CHART
1 - 4 (R1)
2 - 3 (R2)
PIN RESISTANCE (K )
060
046
18
270
H
C
F
*SC
*SR
1
2
5
L1
COMP
21
11
CONT
CCH
OFM
230V
C
CHS
CAP
H
C
F
CONT
L2
23
23
ODF
SCHEMATIC DIAGRAM (LADDER FORM)
CONNECTION DIAGRAM
S
C
R
S
C
R
R C
Y1 Y2
W1
O
AS PROVIDED BY
MANUFACTURER
SEE NOTE #11
R C
Y1 Y2
W1
O
TO INDOOR UNIT
A B C D
PL7
CONT
GRN
WHT
YEL
RED
R C
Y1 Y2
W1
O
AS PROVIDED BY
MANUFACTURER
SEE NOTE #11
A B C D
PL7
YEL
BLU
VIO BLK RED
YEL
BRN
BLU
YEL
BLU
OPTIONAL
NON-COMMUNICATING
CONTROL
SEE NOTE #10
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.
FAULT DEFINITION
FLASH CODE
FAULT DEFINITION
FLASH CODE
On, No Flash
1, Pause
2, Pause
3, Pause
4, Pause
5, Pause
6, Pause
16
25
31
32
45
46
Standby
Low Stage
High Stage
ODU Fan Delay Defeat Not Active
ODU Fan Delay Defeat Active
Brown out is Disabled
Brown out is Active
System Communications Failure
Invalid Model Plug
High Pressure Switch Trip
Low Pressure Switch Trip
Control Fault
Brown out (230V)
47
53
55
56
71
72
73
74
81
82
83
84
No 230v with Call to Run
Outdoor Air Temp Sensor
Coil Temp Sensor
Temp Sensor Range Error
Low Stage Thermal Cutout
High Stage Thermal Cutout
Contactor Shorted
Contactor Open (No 230v to Comp)
Low Stage Thermal Lockout (4 HRS)
High Stage Thermal Lockout (4 HRS)
Low Pressure Lockout (4 HRS)
High Pressure Lockout (4 HRS)
TO INDOOR UNIT
GRN
WHT
YEL
RED
337894-101 REV. B
Fig. 1 – Wiring Diagram — Model sizes 2 -- 5 tons, 208/230--1
