Guide d’Installation sonde E4000
E4000 probe Installation Guide
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8.2.
CO2 NDIR Sensor
9. Powering
At power up, the red status LED will flash alternatively with the green LED during the initial phase of
gas sensors conditioning (20 minutes), and finally the green LED will flash every 2 seconds indicating
the good functioning of the probe. During this gas sensors conditioning phase ventilation, heating and
cooling commands are minimal.
The red LED indicates defaults.
The type of failure is indicated by the number of LEDs flashing ("message") in the following order of
priority of default detected:
1 flash: Voltage too high (>35V DC or 25V AC)
2 flashes: low voltage (<15V DC or 10.6V AC)
3 flashes: Calibration EEPROM defective
4 flashes: Humidity sensor defective (out of range)
5 flashes: Faulty temperature sensor (out of range)
There is a break of 2 seconds between each "message"
If the red LED is continuously ON, it indicates that a KNX Bus, LON or POE daughter board has been
detected but communication with the board has failed.
Each location of gas sensor also includes a red LED.
At power up, if no sensor is detected, both LEDs turn red permanent.
If a sensor is detected and the test is negative, the LED blinks rapidly.
If the test result is positive, the LED goes out.
When the sensor reaches the end of life (10 years) the red LED turns ON to request his replacement.
The countdown is on board the sensor module.
Main board status LEDs
NDIR Sensor
CO2 NDIR Sensor Connectors
Sensors Status LEDs
