① Is the unit installed at a location where there are obstructions in the surrounding area which may be causing poor air circulation?
→ Keep the position the unit about 30 cm away from walls, furnitures, curtains and the like to the front, right and left, as well as above.
② Is the Dust sensor contaminated?
→ Clean the unit according to the procedures described in the user manual to clean contamination from the Dust sensor.
③ Have at least 5 minutes passed since the power of the unit was turned on?
→ The unit initializes sensors during the initial 5 minutes after the power is turned on and is unable to indicate accurate status display during this time. Give it some time and see if the color of the odor and dust monitor changes to another color.