24ANB7
Infinityt 17 2---Stage Air Conditioner
with Puronr Refrigerant
2 to 5 Nominal Tons
Wiring Diagram
SCHEMATIC DIAGRAM (LADDER FORM)
CONNECTION DIAGRAM
CS
L1
RED
BRN
TRAN
24V
COM
11 21
OFM
*SC
YEL
OFM
YEL
BLK
VS VR
YEL
ODF CCH
L1
L2
BLU
FACTORY POWER WIRING
FACTORY CONTROL WIRING
FIELD CONTROL WIRING
FIELD POWER WIRING
COMPONENT CONNECTION
FIELD SPLICE
JUNCTION
CAPACITOR
CIRCUIT BOARD
CRANKCASE HEATER
CRANKCASE HEATER SWITCH
SYSTEM COMMUNICATION
COMPRESSOR
CONT
CS
HPS
LPS
* LS
OAT
OCT
OFM
RVS
* SC
SEV
* SR
STATUS
TRAN
* UC
BLU
PL1
C 1
RVS 2
SEV 3
C 4
1
OCT 2
3
OAT 4
5
PL6
1
PL4
T1
OCT
BRN
BRN
BLK
CS
BLK
PL8
CONT
OAT
C
LO
HI
TIME
(MIN)
SR
LED
DEFROST
TIME
LED
123
TO INDOOR UNIT
2
1
PL3
3
CB
30
LEGEND
HPS
PWM1
PWM2
VIO BLK RED
BLU BRN YEL
BLU
PL1
C 1
RVS 2
SEV 3
C 4
OCT
ON
OFF
4
(DEFAULT) QUIET
3
SHIFT
2
COMM STATUS
1
PL5 AS PROVIDED BY
MANUFACTURER
FORCED
SEE NOTE #11
A B C D R C W1 Y1 Y2 O DEFROST
PL7
RED
WHT
YEL
GRN
4
ON
OFF
3
2
COMM STATUS (DEFAULT) QUIET
SHIFT
1
PL5 AS PROVIDED BY
MANUFACTURER
FORCED
SEE NOTE #11
A B C D R C W1 Y1 Y2 O DEFROST
PL7
2
1
PL2
30 120 60
LED
RED
WHT
YEL
GRN
OPTIONAL
NON-COMMUNICATING
CONTROL
SEE NOTE #10
R C W1 Y1 Y2 O
LED
DEFROST
TIME
123
T1
C
LO
HI
30
SR
30 120 60
TIME
(MIN)
LPS
YEL
PWM1
PWM2
90
CB
90
2
1
PL3
3
ODF CCH
VIO BLK RED
BLU BRN YEL
2
1
PL2
60
BLU/PNK
BLU/PNK
L1
L2
60
YEL/PNK
YEL/PNK
BRN
BRN/YEL
RED/WHT
BLU
1
OCT 2
3
OAT 4
5
PL6
OAT
PL8
MODEL PLUG
MODEL PLUG
* UC (WITH INFINITY/EVOLUTION ONLY)
CONNECT TO
R AND Y2 ON
CONTROL BOARD
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
* MAY BE FIELD INSTALLED
1.
2.
3.
4.
5.
23
F
H
1
2
5
YEL
1
PL4
NOTES:
23
CAP
S
YEL
VS VR
CAP
CB
CCH
CHS
COMM
COMP
R
COMP
YEL
C C
BRN/YEL
HPS
C
21
11
BLU
BLK
BLK
CONT
C
H
23 23
RED/WHT
LPS
EQUIP
GND
*SR
VIO
CONT
L1
208/230 1Ø L2
POWER
SUPPLY
EQUIP GND
F
CONT
COMP
R
C
S
C
BLK
BLK
BLK
BRN
CHS
YEL
BLK
CCH
CAP
BLK
208V
C
230V
YEL
2 1
5
230V
TRAN 230V
*SC
*SR
BRN
CHS
CCH
L2
BLU
RED
TRAN 24V
BLU
Compressor furnished with inherent thermal protection.
To be wired in accordance with National Electric Code (N.E.C.) and local codes.
Outdoor unit control requires a minimum of 27 VA, 24 VAC control power.
Use copper conductors only. Use conductors suitable for at least 75ºC (167ºF).
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.
TO INDOOR UNIT
MODEL PLUG CHART
MODEL MODEL PIN RESISTANCE (K )
PLUG
SIZE
HK70EZ 1 - 4 (R1) 2 - 3 (R2)
18
75
040
024
18
042
120
036
18
044
180
048
18
046
270
060
FLASH CODE
On, No Flash
1, Pause
2, Pause
3, Pause
4, Pause
5, Pause
6, Pause
16
25
31
32
45
46
FAULT DEFINITION
FLASH CODE
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
COMPONENT ARRANGEMENT
CONTROL
BOARD
TRANSFORMER
CAPACITOR
CONTACTOR
FAULT DEFINITION
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)
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.
Fig. 1 – Wiring Diagram — Model sizes 2 -- 5 tons, 208/230--1
337894-101 REV. B
Copyright 2011 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231
Printed in U.S.A.
Edition Date: 05/11
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
2
Catalog No: 24ANB7---1W
Replaces: New