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LX ULTRA SERIES INSTALLATION MANUAL
Wiring Schematics
Aurora Base Control 208-230/60/1 PSC with GeoStart
Compressor
PSC
Blower
Blue
Motor
Grn
Cap
Brn
Wht
Cap
3 Airflow
Settings
H
M
L
White
RB
Black
1
3
Black
Note 2
Note 3
Isolation
Valve
2
1
3
Red
DH W Y2 Y1 G O/B C
(51)
P2
Green
(50)
ES
White
LS
(52)
ALM
K5
ALG
ACC COM
ACC NO
K6
ACC NC
LO
R
C
O/B
G
Y1
Y2
W
DH
P1
F1
R
C
Accessory Relay
Operation
SW2-4 SW2-5
Cycle with Blower
On
On
Cycle with Compressor
Off
Off
Water Valve Slow Open
On
Off
Outdoor Air Damper
Off
On
Aurora Timing Events
Event
Normal Mode
5 to 80 seconds
Random Start Delay
Compressor On Delay
5 seconds
Compressor Minimum On Time
2 minutes
Compressor Short Cycle Delay
4 minutes
Blower Off Delay
30 seconds
Fault Recognition Delay – High Pressure
Less than 1 second
Start-Up Bypass – Low Pressure
2 minutes
Fault Recognition Delay – Low Pressure
30 seconds
Start-Up Bypass – Low Water/Air Coil Limit
2 minutes
Fault Recognition Delay – Low Water/Air Coil Limit
30 seconds
Fault Recognition Delay – Condensate Overflow
30 seconds
Thermostat Call Recognition Time
2 seconds
Auxiliary Heat Staging Delay
5 minutes
Emergency Heat Staging Delay
2 minutes
90 seconds
Water Valve Slow Open Delay
Reheat Delay
30 seconds
Red
S
C
Blue
Pink
Black
R
Blue
Red
Black
Tan
Pink
T2
T1
CC
Note 1
L2
L1
Green (93)
Black
Black (95)
Red (97)
Red
208V
Blue
Black
230V
Transformer
24V
Yellow
Black/White
CC2
CC2
CC2
P9
P5
R LO
R
F FG CC CCG
HI
LO
G
K3
K4
K2
Aurora Base Control
(ABC)
LED4
LED5
G
G
RS485 NET
RS485 NET
RS485 EXP
C
R
A- B+
C
R
A- B+
P8
P7
1 second on and 1 second off
Slow Flash
100 milliseconds on and 100 milliseconds off
Fast Flash
100 milliseconds on and 400 milliseconds off with a 2 second pause before repeating
Flash Code
Test Mode
Random Start Delay
1 second
Status LED (LED1, Green)
Fast Flash
< 1 second
Configuration LED (LED2, Yellow)
Fast Flash
5 seconds
Fault LED (LED3, Red)
Fast Flash
15 seconds
Status LED (LED1, Green)
Normal Mode
ON
No Software Overide
2 seconds
Less than 1 second
Control is Non-Functional
OFF
DIP Switch Overide
30 seconds
Test Mode
Slow Flash
ECM Configure Mode
Reset Configure Mode
30 seconds
Lockout Active
Fast Flash
Dehumidification Mode
Flash Code 2
30 seconds
Reserved
Flash Code 3
30 seconds
30 seconds
Reserved
Flash Code 4
2 seconds
Load Shed
Flash Code 5
ESD
Flash Code 6
20 seconds
Reserved
Flash Code 7
7.5 seconds
90 seconds
30 seconds
Run Winding
Soft Start
Active
Start Winding
Common Winding
Unit Power Supply
208-230/60/1
G
Ground
Neutral
Disconnect
L1
L1
L2
L2
L3
L3
Resistor
RV
FD
LP
HP
P4
REV REV FP1 FP1 FP2 FP2 LPS LPS HPS HPS
K1
SW1
Status
G
Fault
R
FP1 – 15°F/30°F
FP2 – 15°F/30°F
RV – B/O
Acc – Dip 1
Acc – Dip 2
CC – Dual/Single
L – Pulse/Continuous
Reheat/Normal
Config
Y
Y1
G
CC
N/A
CO
C
EH1
C
EH2
P6
P3
Brown (23)
Condensate
Aurora LED Flash Codes
Configuration LED (LED2, Yellow)
Fault LED (LED3, Red)
Flash ECM Setting
Normal Mode
Slow Flash
Input Fault Lockout
Fast Flash
High Pressure Lockout
Off
Low Pressure Lockout
Low Air Coil Limit Lockout - FP2
Low Water Coil Limit Lockout - FP1
Reserved
Condensate Overflow Lockout
Over/Under Voltage Shutdown
Reserved
Reserved
Air/Water Coil Limit Sensor Error
28
C
Black/White
R
Yellow
F
PWM
CFM
C
P13
On
Off
1
2
3
4
5
Notes:
6
7
8
1 – Optional, factory installed unit mounted disconnect.
SW2
2 – Swap blue and red leads for 208V operation.
3 – Optional, factory installed internal isolation valve.
Legend
Factory Low Voltage Wiring
Factory Line Voltage Wiring
Field Low Voltage Wiring
Field Line Voltage Wiring
Optional Block
DC Voltage PCB Traces
Field Zone Sensor Wiring
Internal Junction
Quick Connect Terminal
L1
Field Wiring Lug
Ground
Relay Contacts – N.O., N.C.
Capacitor
OFF
Flash Code 1
Fuse
Flash Code 2
Flash Code 3
CC – Compressor Contactor
Flash Code 4
CO – Condensate Overflow Sensor
Flash Code 5
ES – Emergency Shutdown
Flash Code 6
HP – High Pressure Switch
Flash Code 7
LP – Low Pressure Switch
Flash Code 8
FD – Freeze Detection Sensor
Flash Code 9
F1 – Fuse
Flash Code 10
Flash Code 11
Thermistor
T
Relay Coil
Switch - Condensate Overflow
Switch - High pressure
Switch - Low pressure
Polarized connector
G
Light Emitting Diode - Green
Y
Light Emitting Diode - Yellow
R
Light Emitting Diode - Red
SW1 – Push button
SW2 – DIP package 8 position
RB – Blower Relay
RV – Reversing Valve Coil
97P817-02
11/08/10
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Troubleshooting
