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6.1.32 dE3 - CO2 sensor fault
Error display
The faulty IDU and other IDUs of the same system: operate normally.
Error impact
ODU of the same system: operate normally.
Error trigger
If the main control board of an IDU has lost communication with CO2 sensor for 2 min
Error recovery
Automatic recovery
Possible cause
See the Troubleshooting section.
Troubleshooting
Note 1:
1) The CO2 sensor pins should be inserted on the sensor control board according to the wiring nameplate.
2) When inserting and removing the sensor, do not press and deform the sensor surface, as it may change
its internal optical path and cause zero drift to the sensor, making the measuring results of sensor too large
or even out of range.
3) When inserting and removing the sensor: Operators must keep their hands clean and dry; the antistatic
wrist strap should be worn on the wrist; the metal piece inside the antistatic wrist strap should be in close
contact with the skin; and the metal clamp of the antistatic wrist strap should be placed at the exposed
copper grounding wire.
Digital display
V8 VRF Indoor Units
Display position
Panel, display box, and wired controller
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