HAVEN IAQ PM2.5 threshold is crossed . Honeywell Total Connect Comfort Set fan to on or auto.

When PM2.5 levels become unhealthy, set Honeywell Total Connect fan to On

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If your home's PM levels are too high, this sets your Honeywell Total Connect central blower fan to On, ensuring that more air is moved through your filter. Note: Use a second applet to turn off the fan once levels are healthy again.