PRECISIONAIR WS PRODUCT INFORMATION MANUAL
12
OPERATIONS AND CONTROLLER
CONNECTION
USAGE
SPECIFICATION
ALARM 1, 2, 3
This output will toggle open/ close if any
operation errors occurs.
Potential Free
Max. 42 ACV or 60 DCV. / 500mA
Galvanic Isolated (500V)
AC 4, 5, 6
This output will toggle lead/lag function of
second HVAC. Additional instructions are
available.
Potential Free
Max. 42 ACV or 60 DCV. / 500mA
Galvanic Isolated (500V)
DIGITAL INPUT 7, 9
This input can control and overrule some
operation parameters. See more in the
parameters list.
0/12 DCV
Max. 10mA
DIGITAL INPUT 8, 9
This input can control and overrule some
operation parameters. See more in the
parameters list.
0/12 DCV
Max. 10mA
HOTSPOT SENSOR 9, 10
This is the temperature sensor for placing
inside the enclosure. It can be placed in a
hotspot zone, if required.
NTC -30 to 85˚C
(-22 to 185 ˚F)
COOL (CooL)
Press the “up” or “down” key to change the “compressor on” temperature. Pressing “enter”
returns to the main display. After 30 seconds of no action, it will revert to the main display.
HEAT (HEAt)
Press the “up” or “down” key to change the “compressor on” temperature. Pressing “enter”
returns to the main display. After 30 seconds of no action, it will revert to the main display.
TEST (tESt)
Press the “up” or “down” key to change the “compressor on” temperature. Pressing “enter”
returns to the main display. After 4 minutes of no action, it will revert to the main display.
Step
Evap
Cond
AC
Heater
DC Fan 1
(evap)
DC Fan 2
(cond)
DC comp
0
off
off
off
off
off
off
off
1
on
off
off
off
off
off
off
2
on
off
off
off
off
off
off
3
on
on
on
off
off
off
off
4
on
on
off
off
off
off
off
5
on
off
off
on
100%
off
off
6
off
off
off
off
100%
100%
off
7
off
off
off
off
100%
100%
100%
8
off
off
off
off
off
off
off
ERR (Err)
Display the error code if there is an error. If no error is present, this is not shown.
5
High / Low temp
9
return sensor
6
dc fan 1
10
hotspot sensor
7
dc fan 2
13
condensor sensor
8
dc comp
16
high pressure
UNIT (unit)
Toggle between “C” and “F”. Set points will change on the display accordingly. The TTL
display will remain in Celsius. After 30 seconds of no action, it will revert to the main display.
CONNECTIONS
The air conditioner can operate as a
standalone cooling system if you connect
it to the proper electrical cord and use the
operation panel on the front of the controller.
For enhanced usage, it is possible to connect
an external display with keypad.
