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AFFINITY & AFFINITY ADVANCED SINGLE & DUAL CAPACITY SERIES INSTALLATION MANUAL
The Aurora 'Advanced' Control System cont.
Special Modes and Applications
5-Speed ECM Blower Motor
Normally the 5-Speed ECM motor can be driven off of thermostat
signals and the ABC connector P9. Communicating thermostats,
however present a special problem in this application since they
operate without 24 VAC thermostat signals. The ABC board is
wired to operate these systems from the alternate relay output
signals CC1, CC2, Fan, and EH1 and should be wired for this.
Communicating Digital Thermostats
The Aurora controls system also features either mono-chromatic or
color touch screen graphic display thermostats for user interface.
These displays not only feature easy to use graphical interface
but display alerts and faults in plain English. Many of the features
discussed here may not be applicable without these thermostats.
Dehumidification – Passive
In passive dehumidification mode, the airflow is reduced by 15%
from the heating airflow setting. If cooling airflow is set to +5, -5
or -10% of heating airflow it will automatically be set to -15% of
heating airflow whenever the dehumidification call is present in the
communicating stat or from the thermostat input DH. If the airflow
for cooling is already set to -15% no airflow change will be noticed
from normal cooling. Dehumidification mode will be shown on the
ABC and the communicating thermostats.
Fault LED (LED1, Red)
Red Fault LED
Normal - No Faults
Fault-Input
Fault-High Pressure
Fault-Low Pressure
Fault-Freeze Detection FP2
Fault-Freeze Detection FP1
Fault-Condensate Overflow
Fault-Over/Under Voltage
Fault-FP1 Snsr Error
Fault-Compressor Monitor
Non-CriticAXBSnsrErr
CriticAXBSnsrErr
Alert-HotWtr
Fault-VarSpdPump
Non-CritComErr
Fault-CritComErr
Alarm - Low Loop Pressure
Alarm - Home Automation 1
Alarm - Home Automation 2
NOTES:
*All codes >11 use long flash for tens digit and short flash for the ones digit. 20, 30, 40, 50 etc. are skipped!
Alert' is a noncritical sensor or function that has failed. Normal operation of the heat pump is maintained but service is desired at some point.
LED Flash
Lockout Reset/ Remove
Code *
Off
-
1
No
Auto
2
Yes
Hard or Soft
3
Yes
Hard or Soft
4
Yes
Hard or Soft
5
Yes
Hard or Soft
7
Yes
Hard or Soft
8
No
Auto
11
Yes
Hard or Soft
10
Yes
Hard or Soft
13
No
Auto
14
Yes
Hard or Soft
15
No
Auto
16
No
Auto
18
No
Auto
19
No
Auto
21
No
Auto
23
No
Auto
24
No
Auto
Aurora 'Advanced' Control LED Displays
These three LEDs display the status, configuration, and fault
codes for the control. These can also be read in plain English via
the Aurora AID Tool.
Status LED (LED3, Green)
Description of Operation
Normal Mode
Control is Non-functional
Test Mode
Lockout Active
Dehumidification Mode
Load Shed
Emergency Shutdown
On Peak Mode
(Future Use)
(Future Use)
Configuration LED (LED2, Yellow)
Description of Operation
No Software Overwritten
DIP Switch Overwritten
ECM Configuration Mode
Reset Configuration Mode
Fault Condition Summary
Tstat input error. Autoreset upon condition removal.
HP switch has tripped (>600 psi)
Low Pressure Switch has tripped (<40 psi for 30 continuous sec.)
Freeze protection sensor has tripped (<15 or 30 degF for 30 continuous sec.)
Freeze protection sensor has tripped (<15 or 30 degF for 30 continuous sec.)
Condensate switch has shown continuity for 30 continuous sec.
Instantaneous voltage is out of range. **Controls shut down until resolved.
FP1 Sensor Open or Shorted
Open Crkt, Run, Start or welded cont
Any Other Sensor Error
Sensor Error for EEV or HW
HW over limit or logic lockout. HW pump deactivated.
Alert is read from PWM feedback.
Any non-critical com error
Any critical com error. Auto reset upon condition removal
Loop pressure is below 3 psi for more than 3 minutes
Closed contact input is present on Dig 2 input - Text is configurable
Closed contact input is present on Dig 3 input - Text is configurable
38
Fault LED, Green
ON
OFF
Slow Flash
Fast Flash
Flash Code 2
Flash Code 5
Flash Code 6
Flash Code 7
Flash Code 8
Flach Code 9
Configuration LED, Yellow
ECM Setting
Slow Flash
Fast Flash
OFF
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