Contractor:
P.O.:
Engineer:
Project Name:
Unit Tag:
The manufacturer works continually to improve its products. As a result, the design and speci
fi
cations of each product at the time of order may be changed without notice. Purchaser’s approval of this data set signi
fi
es that the equipment is acceptable under the provisions
of the job speci
fi
cation. Statements and other information contained herein are not express warranties and do not form the basis of any bargain between the parties, but are merely the manufacturer’s opinion or commendation of its products. York and Af
fi
nity are registered
trademarks of Johnson Controls, Inc., and are used with permission.
Wiring Schematics cont.
Aurora Base with ECM and IntelliStart cont.
Event
Normal Mode
Test Mode
Random Start Delay
Compressor On Delay
Compressor Minimum On Time
Compressor Short Cycle Delay
Blower Off Delay
Fault Recognition Delay – High Pressure
Start-Up Bypass – Low Pressure
Fault Recognition Delay – Low Pressure
Start-Up Bypass – Low Water Coil Limit
Fault Recognition Delay – Low Water Coil Limit
Fault Recognition Delay – Condensate Overflow
Thermostat Call Recognition Time
Comfort Alert Recognition Time
Auxiliary Heat Staging Delay
Emergency Heat Staging Delay
Water Valve Slow Open Delay
Less than 1 second
5 to 80 seconds
1 second
5 seconds
< 1 second
30 seconds
2 seconds
Less than 1 second
2 minutes
5 seconds
4 minutes
15 seconds
2 minutes
2 minutes
30 seconds
30 seconds
30 seconds
30 seconds
30 seconds
30 seconds
30 seconds
30 seconds
2 seconds
2 seconds
90 seconds
90 seconds
90 seconds
90 seconds
5 minutes
2 minutes
20 seconds
7.5 seconds
Aurora Timing Events
DESCRIPTION
SW2-4
SW2-5
Cycle with Blower
ON
ON
Cycle with Compressor
OFF
OFF
Water Valve Slow Opening
ON
OFF
Cycle with Comm. T-stat Hum Cmd
OFF
ON
ABC SW2 Accessory Relay
Current Transducer (CT)
Thermistor
Light emitting diode - Green
Relay coil
Capacitor w/ bleed resistor
Switch - Condensate overflow
Switch - High pressure
Switch - Low pressure
Polarized connector
Factory Low voltage wiring
Factory Line voltage wiring
Field low voltage wiring
Field line voltage wiring
Optional block
DC Voltage PCB traces
Junction
Quick connect terminal
Wire nut
Field wire lug
Ground
Fuse
CC -
CO -
K5 -
K6 -
CR3 -
CR4 -
F1 and F2 -
WCL -
HE -
HP -
LP -
PB1, PB2 -
PS -
RV -
SW1 -
SW1 -
SW2 -
TS -
Compressor Contactor
Condensate overflow sensor
DHW pump relay
Loop pump relay
Fuses
Water Coil Limit Sensor
Heater element
High pressure switch
Low pressure switch
Power blocks
Power strip
Reversing Valve coil
DIP package 5 position AXB
TEST MODE ABC Board
DIP package 8 position ABC Board
Thermal limit switch
Legend
Relay Contacts-
N.O., N.C.
G
T
1
3
2
P
L1
PSC Fan Speed Relay
PSC Fan Power Relay
ER1 to ER4 -
Aux heat stage relays
HWL -
Hot water limit sensor
SC -
Start Contactor
Start Relay
SR -
CS -
Compressor Solenoid
Breaker
Aurora LED Flash Codes
Status LED (LED3, Green)
Status LED (LED1, Green)
Configuration LED (LED2, Yellow)
Fault LED (LED3, Red)
Random Start Delay (Alternating Colors)
Fast Flash
Fast Flash
Fast Flash
1 second on and 1 second off
100 milliseconds on and 100 milliseconds off
100 milliseconds on and 400 milliseconds off with a 2 second pause before repeating
Slow Flash
Fast Flash
Flash Code
Normal Mode
Control is Non-Functional
Test Mode
Lockout Active
Dehumidification Mode
Future Use
Future Use
Load Shed
ESD
OFF
ON
Slow Flash
Fast Flash
Flash Code 2
Flash Code 3
Flash Code 6
Flash Code 4
Flash Code 5
Future Use
Flash Code 7
Configuration LED (LED2, Yellow)
No Software Overide
OFF
DIP Switch Overide
Slow Flash
Fault LED (LED1, Red)
Normal Mode
Input Fault Lockout
High Pressure Lockout
Low Pressure Lockout
Future Use
Freeze Detection – FP1
Reserved
Condensate Overflow Lockout
Over/Under Voltage Shutdown
Future Use
Future Use
FP1 Sensor Error
Flash Code 1
OFF
Flash Code 2
Flash Code 3
Flash Code 4
Flash Code 5
Flash Code 8
Flash Code 6
Flash Code 7
Flash Code 9
Flash Code 10
Flash Code 11
CC2
Factory
Fault
ALG
ALM
LS
ES
ACC c
Status
AURORA BASE
CONTROL™
RV – K1
CC2
CC – K2
CC Hi – K3
Fan – K4
Alarm – K5
Acc – K6
ACC no
ACC nc
O/B
C
R
LO
G
Y1
Y2
W
DH
3A-Fuse
O/B
C
R
LO
G
Y1
Y2
W
DH
LO
G
HI
CCG
CC
FG
F
R
HP
HP
LP
FP2
FP2
FP1
REV
REV
CFM
PWM
ECM PWM
Factory
Factory Fan Connection
R
R
CC
C
C
R
(-)
(+)
RS 485
EH2
C
EH1
C
CO
(+)
(-)
R
C
RS485 Exp
Factory
Com1
Com2
Config
G
G
G
Y
R
SW1 Test
FP1 – 15
o
F/30
o
F
JW2 - Alarm
P11
P5
P2
P1
P8
P7
P9
P6
P3
SW2
P13
P4
FP2 – 15
o
F/30
o
F
RV – B/O
ACC – Dip 4
ACC – Dip 5
CC – Dual/Single
L – Pulse/Continuous
Reheat/Normal
Factory Use
Field Connections
Field Connections
C
LP
FP1
F
CC
G
Y1
1
2
3
4
5
6
7
8
Off
On
N/A
RS485 NET
EH1
LED1
LED2
LED3
LED4
LED5
NOTE 4
P3 from unit’s control box
connects to P2
2
3
P9
5
4
1
L2
L1
L2
L1
G
G
Circuit 1
Circuit 2
NOTE 2
208-230/60/1
208-230/60/1
Green
Connects to variable
speed ECM motor only
P11
2
3
4
5
1
NOTE 6
With optional EA Series 20kW Auxiliary Electric Heat shown
Place auxiliary heat schematic from kit here
Gray
Black
Yellow
Pink
Blue
2 - Use manufacturer’s part number 19P592-01 (jumper
bar assembly) when single source power is required.
3 – When Auxiliary Heat is installed the BLK/WHT
wire from CC-L1 to PB2-2 and the GRY/WHT wire
from CC-L2 to PB2-1 must be removed (located in
the heat pump control box).
1 - Use copper or aluminum conductors.
6 – Jumpers wires are Factory Installed, and are
required for auxiliary heat operation.
Black
Gray
Yellow
Pink
Yellow
Pink
Gray
EHC
EHC
Yellow
Blue
ER1
ER2
ER3
ER4
NO
NO
NO
NO
EA Series PCB
P2
C
1
2
3
4
P1
4
1
2
3
C
G
G
G
G
Pink
Black
Violet
Blue
Brown
Orange
HE1
TS1
HE2
TS2
HE3
TS3
HE4
TS4
Green
Gray
Black
Brown
Orange
To PB2
5 – Low voltage wiring CLASS 2.
4 - When installed, the Auxiliary Heat powers blower and controls.
L1
L2
Single Disconnect Power
208-230/60/1
Aux Elect Power
208-230/60/1
L1
L2
L1
L2
Unit Power
208-230/60/1
CSA installed units only
Local codes may require a single
source of power supply
Breaker box
furnished by
installer
Circuit Breakers
Notes
4 - When installed, the Auxiliary Heat powers blower and controls.
3 - Use manufacturer’s part number 19P592-01 (jumper bar assembly)
when single source power is required.
1 - Switch blue and red wires for 208V operation.
2 - The blk/wh and gray/wh wires are removed when Aux Heat is installed
6 - Wires provided for Auxiliary Heat low voltage control. Wires are secured at blower.
5 – Low voltage wiring CLASS 2.
7 – Ground wire only on units with aluminum air coils.
SD2500AG 05/21
61
Page _____ of _____
Aston Series
1 - 6 Tons 60Hz
