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Honeywell F 300 electronic air purifier

We built a new house in 2005, moved in in Jan. 06. We have always had a problem with our Honewell F300 electronic air purifier, it makes a clicking noise when it comes on, for varying amounts of time. We havwe had our service rep/installer here a number of times, exchanged cells, washed and cleaned units - still the clicking persists. Who do we need to talk to get relief or replacement?

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  • Anonymous Jun 08, 2008

    Ours sounds like the kid with the playing card attached to his bicycle. We've not found a solution.

  • Anonymous Jul 06, 2008

    We have the same problem, and we turned off the unit, only to find our air conditioner is now freezing up.

  • craphappens Nov 24, 2008

    Within a month after installation the unit started clicking like a kid running alongside a fence with a stick. I called the heating contractor and he told me to remove the electronic filter elements and make sure that the wires and fins were evenly spaced. If they get too close together then the unit arcs at that location causing the clicking. I did as he said and it worked.
    Over the last year the unit kept needing the same treatment. Apparently the fins move or warp from time to time.
    The biggest problem is that it doesn't seem to trap anything, even when the filter is working fine. I remove the filter element to clean them periodically and they have almost nothing to clean off. The literature says that the dust particles get electrically charged and pulled out of the air. If that was happening then those particles would have to be somewhere. But they are not! The only answer is that nothing gets pulled out of the air. An old disposable 1" fiber filter would trap more dust in one day then the Honeywell electronic has trapped in over a year.

    Does anyone know of a better option? Can I just get a big 5" thick disposable filter and stuff it in place of the worthless electronic elements?


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There's usually a troubleshooting guide stuck on the inside of the door.  it suggests a systematic flowchart for diagnosing the problem.
you should be able to isolate it to either the power supply (means replacement), or one of the cells.
on mine, one of the many little vanes got a bent during cleaning, and was shorting out.  (it doesn't take much.)  a quick visual and very little judiciously applied force straightened it out and fixed the problem.
i've also found that the unit will crackle a lot after a cleaning because of drops of water remaining in the cells, so i usually reassemble everything, but leave the unit turned off for an hour or two, which lets the blower on the furnace dry the cells for me.

Posted on Aug 11, 2008

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