FAQ
• 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.
• What if the CO2 timer is not keeping the correct time?
The CR1220 3V lithium battery, located on the circuit board
connected to the inside of the front faceplate, may need to
be replaced. The battery has an average life of 5 years.
• 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. If the problem persists, reduce the number
of connected devices or consider devices with reduced
amperage requirements.
Humidity Mode:
To select between humidifying and
dehumidifying modes, press the “Humidify/Dehumidify”
button. The display will show the current setting, “rh_Incr” for
humidifying and “rh_dEcr” for dehumidifying. Use the UP and
DOWN arrow buttons to choose between modes. Press “Enter/
Reset” to accept the new setting.
Humidity Deadband:
To set the humidity deadband, press the
“Deadband” button under “Humidity.” The display will show the
current setting. Use the UP and DOWN arrow buttons to adjust
the setting. Press “Enter/Reset” to accept the new setting.
Min/Max Humidity:
Press the “Min/Max Humidity” button to
display the minimum and maximum recorded humidity values.
Press the button again to cycle through the values. Press “Enter/
Reset” to reset a displayed value.
Selecting CO
2
Settings
CO
2
Mode:
Press the “Mode” button to display the current
setting. Use the UP and DOWN arrow buttons to select
between daylock (“dAy_LOCk”) and dayfree (“dAy_FrEE”)
modes. Daylock disables the CO
2
output when the cooling output
is activated. Select this mode when using exhaust fans to cool
the growing area. Dayfree allows the CO
2
and cooling outputs to
be activated at the same time. Select this mode when using an
air conditioner or to use the CO
2
output as a standard daytime
recycle timer.
CO
2
On Duration:
Press the “On Duration” button to display the
current setting. The first two digits (hours) will blink. Use the UP
and DOWN arrow buttons to set how many hours the CO
2
output
will be activated. Press “Enter/Reset” to accept the setting. The
middle two digits (minutes) will blink. Program how many minutes
and seconds the CO
2
output will be activated by following the
steps used to program the hours.
CO
2
Off Duration:
Press the “Off Duration” button and follow the
steps under “CO
2
On Duration” to set how long the CO
2
output
will be deactivated.
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 the 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.
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.
