HAVEN IAQ PM2.5 threshold is crossed . Lennox iComfort Set Fan to ON.

When PM2.5 levels become unhealthy, set Lennox iComfort fan to On

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If your home's PM levels are too high, this sets your Lennox iComfort fan to on, allowing more air to be filtered by your central system. Note: Use a second applet to turn off the device once levels are healthy again.