Selecting CO
2
Settings
CO
2
ppm Setting: To select the CO
2
ppm set-point, press the “ppm
Setting” button. The current setting will be displayed. Use the UP and
DOWN arrow buttons to adjust the setting. Press “Enter/Reset” to accept
the new setting.
CO
2
Deadband: To select the CO
2
deadband set-point, press the
“Deadband” button under “CO
2
.” Use the UP and DOWN arrow buttons
to adjust the setting. Press “Enter/Reset” to accept the new setting.
Locking Temperature/Humidity Functions
The temperature and humidity functions may be set to operate locked
(“connECt”) or split (“SPLit”). Press “Temp/Humidity Lock” to display the
current setting. Use the UP and DOWN arrow buttons to select a new
setting. Press “Enter/Reset” to accept the new setting.
• Select “connECt” if using only ventilating fans for cooling and
removing humidity. The fan will turn on when the sensor detects an
increase above the set-point in either humidity or temperature.
• Select “SPLit” if using a ventilating fan or AC unit for cooling and a
dehumidier for removing humidity. The cooling device will turn
on when the temperature rises above the set-point, and the
dehumidier will turn on when the humidity rises above the set-point.
• Select “SPLit” if using a fan or AC unit for cooling and a humidier for
adding humidity. The cooling device will turn on when the temperature
rises above the set-point and the humidier will turn on when the
humidity drops below the set-point.
Locking Temperature/CO
2
Functions
The temperature and CO
2
functions may be set to operate locked
(“connECt”) or split (“SPLit”). Press “Temp/CO
2
Lock” to display the
current setting. Use the UP and DOWN arrow buttons to select a new
setting. Hold “Enter/Reset” for 3 seconds to accept the new setting.
• Select “connECt” if using ventilating fans for cooling and a
compressed CO
2
setup. The CO
2
will be deactivated when the fans
are activated, allowing the fans to exchange air while minimizing loss
of CO
2
.
• Select “SPLit” if using a recycling air conditioner for cooling and a
compressed CO
2
setup. The air conditioner and compressed CO
2
will
be activated independently.
• Select “SPLit” if using ventilating fans for cooling and a CO
2
generator. The ventilation fans and CO
2
generator will be
activated independently.
• Select “connECt” if using a recycling air conditioner and a CO
2
generator. The CO
2
generator will be deactivated while the air
conditioner is operating to reduce the amount of heat the air
conditioner must offset.
Displaying Recorded Values
Press the “Min/Max Recall” button to display the minimum and maximum
recorded values for temperature, humidity and CO
2
level. Press the
button repeatedly to cycle through the values in the following order: max.
temperature, min. temperature, min. humidity, max. humidity, min. CO
2
,
max. CO
2
. Press “Enter/Reset” to reset a displayed value.
Fuzzy Logic Mode
Fuzzy Logic mode counters rising or falling CO
2
levels by quickly
activating the CO
2
solenoid valve, allowing CO
2
levels to be controlled
more precisely. This function can be used only with compressed CO
2
.
Do not use Fuzzy Logic with a CO
2
generator.
Hold “Enter/Reset” for 5 seconds to activate or deactivate Fuzzy Logic
mode. Use the UP and DOWN arrow buttons to choose between Fuzzy
Logic mode (“LogIcon”) if using compressed CO
2
and generator mode
(“gEnErAt”) if using a CO
2
generator. Press “Enter/Reset” to accept the
new setting.
Calibrating the CO
2
Sensor
• Place the Controller and sensor outdoors in a shaded area.
Note: If the unit is calibrated in a high-trafc or highly populated
area, a slightly higher calibration value of 400-475 ppm
is recommended.
• Plug in the Controller and allow it to warm up for a minimum of
30 minutes but 1 hour is recommended.
• Press the “Calibrate CO
2
Sensor” button to activate automatic
calibration. Do not breathe on the unit while the calibration
function is activated.
• Press “Enter/Reset” to start the calibration sequence. “Co2_
CAL” will be displayed and the CO
2
calibration LED will blink.
• When it is complete, the screen will display normal functions.
Calibration will not affect any other settings. Note: It may take up
to 10 minutes to complete the calibration process.
FAQ
•HowcanItelliftheCO
2
readingisaccurate?
Check the calibration of the CO
2
sensor by placing the
sensor outdoors for 30 minutes. The reading should be
about 380 ppm. If not, see the “Calibrating the CO
2
Sensor” section.
•Whatifthetemperaturereadingishigh?
Verify the remote sensor is not in a location with direct,
intense exposure to light.
•Dothehumidityandtemperaturesensorsneedto
becalibrated?
No. The humidity and temperature sensors are digital and
do not require calibration.
Troubleshooting
•Whydoesthedisplayread“ErrSEn”?
The remote sensor is not connected or not
communicating with the controller. Verify the cable is
connected and the remote sensor is powered.
•WhyarethesmallerrorLEDsilluminated?
The sensor or a connected device is malfunctioning. See
the “Error LEDs” section for more information.
•Whyisn’ttheCO
2
outputbeingactivated?
Verify the correct CO
2
mode has been selected and verify
the “Daytime mode (photocell)” is illuminated.
•Whyisn’ttheControllerpoweringthe
connecteddevices?
Reset the circuit breaker. Ensure the device to be controlled
is working correctly by plugging the device into a reliable
power source. Verify the Controller is being supplied the
correct voltage.
Optional PC Connection
Downloadable software and a USB connection cable (available
separately) may be used to change the Controller’s settings, verify
outputs are operating, and record and chart conditions in the growing
area using a personal computer. Download the necessary software
and instructions at www.Sunleaves.com.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.