VisionPRO
®
IAQ
7 69-1816EFS—09
Heat Pump Control — Fossil Fuel Backup
(Setup Function 0345):
Option 0 (No Droop Control): If outdoor temperature is above balance point (Function 0350),
only the compressor operates. Below this temperature, only backup heat operates.
Option 1 (Droop Control): As above, but backup heat is activated if room temperature drops
to the selected droop temperature setting (compressor is deactivated).
Option 2: (Droop Control with Aux Heat lockout): Compressor works only above auxiliary
lockout temperature, backup heat works only below balance point, 2° droop between
temperatures.
If temperature is not reached in a reasonable time, set the upstage timer (Function 0346).
After the designated time, the compressor will be deactivated and the system will switch to
backup heat.
Ventilation Control
(Setup Functions 0400-0432): If the system includes a self-powered
ventilation unit (Function 0400), the home can be ventilated on demand, or ventilated
automatically if high humidity is detected while in heating mode (Function 0406). Ventilation
can also be locked out based on high and low outdoor temperature (Function 0431 &
0432)—outdoor temperature sensor required.
Installer system test
Special function
Press
s
t
to
select test
Press
DONE
to terminate testing
During installer setup, press
t
repeatedly until “Test” appears
Test
number
System
status
Press
s
t
to
change status
DONE
TUE
Inside
70
20
0120
DONE
1
0
TEST
System test
System status
Other messages
1
Cooling
system
0
Off
1
Test cooling stage 1
2
Test cooling stages 1 & 2
2
Fan system
0
Fan off
1
Fan on
3
Heating
system
0
Off
1
Test heating stage 1
2
Test heating stages 1, 2
3
Test heating stages 1, 2, 3
4
Test heating stages 1, 2, 3, 4
4
Emergency
heating
system
0
Off
1
Test EmHeat stage 1
2
Test EmHeat stages 1, 2
5
Humidifier
0
Off
1
On
6
Dehumidifier
0
Off
1
On
7
Ventilator
0
Off
1
On
P
Ventilation meets ASHRAE 62.2
standard (Function 0404)
F
Ventilation does not meet ASHRAE
62.2 standard (Function 0404)
Err
See error codes
CAUTION: EQUIPMENT
DAMAGE HAZARD.
Compressor protection is
bypassed during testing. To
prevent equipment damage,
avoid cycling the compressor
quickly.
