ℹ
info Honeywell
Status Air Quality Indicator pulses between green, yellow, and red
Air quality calibration in progress — the VOC sensor is initializing and measuring the air quality upon startup.
? What Causes This
Unit has just been powered on and the VOC sensor is calibrating to determine current room air quality levels.
ⓘ What This Means
Wait a few minutes for the unit to complete calibration. The indicator will stop pulsing and display a solid color (green, yellow, or red) once calibration is complete. No action is required.
Source: page 6 of the official manual
From the manual
This error code appears in:
Honeywell HPA830 Air Purifier