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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    

  dehumidifier for removing humidity. The cooling device will turn  

 

  on when the temperature rises above the set-point, and the 

  dehumidifier will turn on when the humidity rises above the set-point.

• Select “SPLit” if using a fan or AC unit for cooling and a humidifier for   

  adding humidity. The cooling device will turn on when the temperature  

  rises above the set-point and the humidifier 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-traffic 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

• How can I tell if the CO

2

 reading is accurate?

 

  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.

• What if the temperature reading is high? 

  Verify the remote sensor is not in a location with direct,  

  intense exposure to light.

• Do the humidity and temperature sensors need to 

  be calibrated?

 

  No. The humidity and temperature sensors are digital and    

  do not require calibration.

Troubleshooting

• Why does the display read “Err SEn”? 

  The remote sensor is not connected or not 

  communicating with the controller. Verify the cable is 

  connected and the remote sensor is powered.

• Why are the small error LEDs illuminated? 

  The sensor or a connected device is malfunctioning. See    
  the “Error LEDs” section for more information.

• Why isn’t the CO

2

 output being activated? 

  Verify the correct CO

2

 mode has been selected and verify    

  the “Daytime mode (photocell)” is illuminated.

• Why isn’t the Controller powering the 

  connected devices? 

 

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.

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