“I have changed the pre filter, but the "check pre-filter" light is staying on.”
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Thank you for your question. The Honeywell HPA5100 Insight HEPA Air Purifier won't turn off automatically. With the unit powered on, press and hold the “Check Filter” or “Check Pre-Filter” button for about 3–5 seconds to reset the light. If you need further assistance, please reach out to SocialSupport@helenoftroy.com. We're here to help!
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