4
5
Error Codes
S_SR: Check the sensor connection.
OUTP: If the CO
2
sensor doesn’t observe the ppm set point being reached in
a 2 hour time period, the screen will flash the error code. Press the any knob
to reset the error.
OVLD: Outlet is being overloaded. Unplug units from controller and reduce
amperage load. Maximum amperage is 14.5 amps.
Controller Specifications:
• Max amp: 14.5 amps @ 120V AC/60Hz
• Sensor cord length: 15 feet
• CO
2
Range: 400-2000 ppm
• CO
2
Accuracy: +/- 100 ppm
• Weight: 2.1 lbs
• Dimensions: 5.07” x 4.68” x 1.95”
• Indoor Use Only
• Operating Temperature: 50° F to 95° F
• Maximum relative humidity: 95%
Controller Diagrams:
PPM Up
CO2
+Deadband
Setpoint
On
Off
Time
CO2 PPM
CO2 Generator
Fuzzy Logic
CO2
+Deadband
-Deadband
Setpoint
On
Off
Time
CO2 PPM
CO2 Tank - Solenoid Valve
