Question about Hoover SilentAir 4000 Air Purifier

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I have a hoover a400 with a red ligh have cleaned out clear boxw

Turned on vacuum today has a red light dumped can and cleaned filter light will not go off whats next

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New rubber gasket behind hempa filter

Posted on Dec 28, 2008

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1 Answer

Why won't my Hoover Platinum turn on?


Check and see if there is a reset button for the vacuum head this trips sometime to protect the head motor. Also if the roller heads bind they can snap the belt if it is belt driven. If it is direct drive then I would look for the trip or reset button.

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it may need a clean as there is a air flow sensor, if the flow is not right then it will have this on also a faulty sensor will read this aswell.

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Check that there are no fine pieces of lint that are bridging the plates or the ionizing wires, to ground.

Check the contact points of the collector cell and inside the unit.

The light is caused by a shorted collector cell and associated components.

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My Alpine Air XL-15 Air Purifier youst to have a


The Classic XL-15 should have 2 individual indicator lights. The 'red' light is the ionizer indicator, and the 'green' light is the ozone level indicator. Both lights should be illuminated, if the unit is operating properly. The red light should be pulsing, and the green light should be dimly lit, and brightened as the output knob is turned up - indicating a higher ozone production. If the green light is not lit, you likely won't smell the ozone. The first thing you should try, is cleaning the filter and glass ozone plate. Unplug the unit and remove the rear air filter. Clean the filter with clean water and allow to COMPLETELY air dry. Removed the glass plate by depressing the lever behind the glass plate, and gently pulling it out. Clean the glass with a half water, half ammonia (or distilled white vinegar, if ammonia not available) and an old toothbrush to clean between the mesh. Dry plate with a hair dryer and re-place plate into unit. Replace dried air filter, making sure the little tab on the bottom is secured into the interlock. Power the unit on and you should see the indicator lights and smell the fresh ozone!

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3 Answers

Red light won't go off


To RESET the Electronic Filter Check:
When the filter check light remains on,it is time to check/clean the HEPA-Type
filters and reset the filter check,if needed. With the unit powered on,insert the tip of a ball-point pen or
paperclip into the hole next to the LED filter check light and hold for approximately 5 seconds until the
light turns off (Fig 5). Depending upon your individual usage (environment and hours used),you may need
to check and clean the filters more or less frequently. If the HEPA-Type filters are cleaned before the filter
check light turns on,the filter check should be reset at the same time.
These cleaning intervals are intended as guidelines only. Performance of any filter media is dependent
upon the concentration of contaminates going through the system. High concentrations of contaminates
such as dust,pet dander and smoking will reduce the useful performance of the filter.
NOTE:The HEPA-Type filters are not washable.
Fig.5

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5 Answers

Clean Filter Red light


I cleaned the filters as well earlier and the red filter light still blincked to clean the filters. Then I pushed the power button for about 10 seconds continously and then turned it on and the light turned off.

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1 Answer

Brookstone pure ion filters


You need to reset it, unplug the unit and take out both filters. Then, plug it back and and simultaneously and firmly slam both filters into the back of it at the same time. Before putting both filters back inside the until, also vacuum out the insides in case there is hair/dust inside of it that has accumulated.
Also, make sure your filters are 100% dry before every putting them back inside the unit.
Good luck!

Mar 02, 2008 | Brookstone Pure-Ion UV Air Purifier

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