Autopilot APCEM2 Panduan Pemecahan Masalah - Halaman 5

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Troubleshooting Analog CO2 Controller APCECO

1) Plug the controller into a power outlet (vertical), and plug a small fan (or other small 120V device) into

the controller.

2) Change "SET POINT" knob to 1500 ppm and "DEADBAND" knob to 100 ppm.

3) Test photocell, by covering up the photocell on sensor face.

The Daytime light on controller face should turn off after about 20 seconds. The "RELAY ON" light

should also turn off. If the Daytime light doesn't come on 1 minute or so after startup, make sure the

photocell is receiving enough light.

4) Test CO2 ppm level, by counting the flashing lights. Each time the red lights blinks (labeled "X1K")

represents 1000 ppm. Each time the yellow light blinks (labeled "X100") represents 100 ppm. For

example, if the red light flashes once and the yellow flashes four times, that means the sensor is

reading 1400 ppm in that particular area. Or, if the red light doesn't flash, and the yellow light flashes

five times, that means the sensor is reading 500 ppm.

To check the CO2 calibration, take the controller and sensor outside. After 10 minutes, the reading

should be within 300-500 ppm. Do not breath on the sensor during this process! NOTE: the CO2

sensor is factory calibrated and doesn't need calibration for at least the first 2 years. A common

mistake is to calibrate a brand new unit.

However, if not within 300-500 ppm, calibrate the unit: While still outside, turn SETPOINT knob fully

counterclockwise and the DEADBAND knob fully clockwise. The red light will turn on while it goes into

Calibration mode. Again, do not breathe on the sensor during this process! After 10 minutes the

yellow light will turn on, indicating calibration is finished.

5) Test the relay, by turning the SETPOINT knob to 2500 ppm. The RELAY ON light should turn on, and the

small fan plugged into the controller should turn on. Make sure DAYTIME light is on and PHOTOCELL is

receiving enough light (the controller only releases CO2 during Lights ON).