Controls - upc ddc control (optional) cont – WaterFurnace Envision2 User Manual
Page 35
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ENVISION
2
COMPACT - 50 HZ INSTALLATION MANUAL
1.
Leaving Air Temperature (LAT) Sensor – This 10 kOhm
NTC sensor is factory installed on all UPC equipped
heat pumps. It typically is attached to wiring inside
the blower cabinet on the suction side of the blower.
This sensor is attached on ABC FP2 pins available as
LAT AU-30.
1.
Compressor Proving Sensors – This optional factory
installed current sensor is connected to confirm
compressor operation via the power wires. The sensor
is attached at ABC Y1 and available at point BV-65.
1.
Valve End Switch – This optional input is setup for a field
installed flow valve end switch. This end switch input is
attached at ABC Y2 and available at point BV-67.
1.
Fan Proving Sensors – This optional factory installed
current sensor is connected to confirm fan operation
via the power wires. The sensor is attached at ABC G
and available at point BV-33.
1.
Occupancy Sensor - This standard feature includes a
field installed and wired room sensor with occupancy
sensor typically found in DDC systems. The RNet
room sensors can be found thru your commercial
representative. The occupancy Sensors are attached at
ABC 0 and can be found at point BV-49.
1.
Dirty Filter Switch – This optional field installed switch
is connected to confirm dirty filter operation. The
dirty filter switch can be found thru your commercial
representative. The sensor is attached at ABC W and
available at point BV-63.
2. Fault, Configuration, and Status Codes – The codes
can be visible to the BAS if desired
Fault LED (LED1, Red)
Red Fault LED
LED Flash
Code *
Lockout
Reset/
Remove
Fault Condition Summary
ABC Basic F
aults
Normal - No Faults
Off
-
Fault-Input
1
No
Auto
Tstat input error. Autoreset upon condition removal.
Fault-High Pressure
2
Yes
Hard or Soft
HP switch has tripped (>600 psi)
Fault-Low Pressure
3
Yes
Hard or Soft
Low Pressure Switch has tripped (<40 psi for 30 continuous sec.)
Fault-Freeze Detection FP2
4
Yes
Hard or Soft
Freeze protection sensor has tripped (<15 or 30 degF for 30 continuous sec.)
Fault-Freeze Detection FP1
5
Yes
Hard or Soft
Freeze protection sensor has tripped (<15 or 30 degF for 30 continuous sec.)
Fault-Condensate Overflow
7
Yes
Hard or Soft
Condensate switch has shown continuity for 30 continuous sec.
Fault-Over/Under Voltage
8
No
Auto
Instantaneous voltage is out of range. **Controls shut down until resolved.
Fault-FP1 & 2 Snsr Error
11
Yes
Hard or Soft
If FP1 or 2 Sensor Error
ABC & A
XB A
d
v
anc
ed F
aults
Fault-Compressor Monitor
10
Yes
Hard or Soft
Open Crkt, Run, Start or welded cont
Non-CriticAXBSnsrErr
13
No
Auto
Any Other Sensor Error
CriticAXBSnsrErr
14
Yes
Hard or Soft
Sensor Error for EEV or HW
Alert-HotWtr
15
No
Auto
HW over limit or logic lockout. HW pump deactivated.
Fault-VarSpdPump
16
No
Auto
Alert is read from PWM feedback.
Not Used
17
No
Auto
IZ2 Com Fault. Autoreset upon condition removal.
Non-CritComErr
18
No
Auto
Any non-critical com error
Fault-CritComErr
19
No
Auto
Any critical com error. Auto reset upon condition removal
Alarm - Low Loop Pressure
21
No
Auto
Loop pressure is below 3 psi for more than 3 minutes
Alarm - Home Automation 1
23
No
Auto
Closed contact input is present on Dig 2 input - Text is configurable
Alarm - Home Automation 2
24
No
Auto
Closed contact input is present on Dig 3 input - Text is configurable
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.
Fault LED (LED1, Red)
Red Fault LED
LED Flash
Code*
Lockout
Reset/
Remove
ABC Basic F
aults
Normal - No Faults
OFF
–
Fault - Input
1
No
Auto
Fault - High Pressure
2
Yes
Hard or Soft
Fault - Low Pressure
3
Yes
Hard or Soft
Fault - Freeze Detection FP2
4
Yes
Hard or Soft
Fault - Freeze Detection FP1
5
Yes
Hard or Soft
Fault - Condensate Overflow
7
Yes
Hard or Soft
Fault - Over/Under Voltage
8
No
Auto
Fault - FP1 & FP2 Sensor Error
11
Yes
Hard or Soft
NOTE: All codes >11 use long flash for tens digit and short flash for the ones
digit. 20, 30, 40, 50, etc. are skipped.
Aurora Base Fault Codes (ABC Only)
Aurora Advanced Fault Codes (ABC + AXB Expansion Board)
Controls - UPC DDC Control (optional) cont.