I have a HEPA type Holmes Air Purifier (Model # HAP422SRC-U) with a filter indicator light. It's light came on, so I changed out the filters. While I was at it, I added carbon/odor grabbing filters. The instructions included with the carbon filters said to remove the foam pre-filter (it wasn't needed), so I did. The indicator light is still on, but I can't find anything online or in the manual about HOW to reset it. The box just says "reset when changing the filters" ... grrrrrr!!! Shouldn't it auto reset??
I just got an email from Holmes ... if you hold the power button down for about 3 seconds (while the unit is on) this will reset the indicator light. It worked!
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