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  1. #1
    Join Date
    May 2008
    Posts
    1

    Thumbs down fluorescent lamp and humidity issues

    Greetings,
    (this is my first post)
    We have a fluorescent lighting fixture in our kitchen (typical office light...two bar lamps, if that's what they're called). It is at least 5 years old, probably older.

    In our location, it is frequently very humid (>80%). On humid days when we open the house, the light does not come on at all or one of the lamps comes on about 1/3 partial brightness.

    Sometimes, we can make it come on by flicking the switch rapidly on/off.
    Is this a feature of fluorescents?
    Should we look at the starter or ballast or what?

    thanks in advance
    - s

  2. #2
    Join Date
    Jan 2008
    Location
    Lakeland ,MN
    Posts
    356

    Default Re: fluorescent lamp and humidity issues

    [QUOTE=google;23901]Greetings,
    (this is my first post)
    We have a fluorescent lighting fixture in our kitchen (typical office light...two bar lamps, if that's what they're called). It is at least 5 years old, probably older.

    In our location, it is frequently very humid (>80%). On humid days when we open the house, the light does not come on at all or one of the lamps comes on about 1/3 partial brightness.

    Sometimes, we can make it come on by flicking the switch rapidly on/off.
    Is this a feature of fluorescents?
    Should we look at the starter or ballast or what?

    thanks in advance

    Alot of times the lamp is not in the socket correctly. On the end of the lamp on the metal part is a depressed line that must be facing directly 90 degress from the lamp socket(facing down towards the floor is it is ceiling mounted)when you insert the lamp. That makes the two pins touch the socket when twisting it in the sockets. Sometimes if they are not seated correctly it will not ignight the gases with in the lamp in the starting cycle. If that does not work replace the lamp first and inspect the socket to make sure it is touching the pins on the lamp. If that still does not work replace the starter (most modern fixtures do not use starters). If that still does not work it could be the ballast. I doubt that humidity is a problem but the ambient temperature can add to the connections problems I mentioned above.
    Harry

  3. #3
    Join Date
    Jan 2008
    Location
    Lakeland ,MN
    Posts
    356

    Default Re: fluorescent lamp and humidity issues

    [QUOTE=YukYuk;23951]Well first off the gas in the fluorescent lamp isn't ignited.

    Ok I yield when the gases are excited. I wasn't trying to impress anyone with my knowledge. I was trying to explain in layman terms. I think you just restated what I said using different words in the rest of your answer I am glad I taught you something new.
    Harry

  4. #4
    Join Date
    Nov 2007
    Posts
    980

    Default Re: fluorescent lamp and humidity issues

    Harry some aren't teachable

  5. #5
    Join Date
    Jan 2008
    Location
    Lakeland ,MN
    Posts
    356

    Default Re: fluorescent lamp and humidity issues

    Quote Originally Posted by havanagranite View Post
    Harry some aren't teachable
    I agree to funny!!!!
    Harry

  6. #6
    Join Date
    Jan 2008
    Location
    Lakeland ,MN
    Posts
    356

    Default Re: fluorescent lamp and humidity issues

    Quote Originally Posted by YukYuk View Post
    I've posted similar information before you joined this site, you have not taught me a thing.
    Oh thats right under Leslie. Leslie
    Harry

  7. #7
    Join Date
    Aug 2007
    Location
    The Great White North
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    4,045

    Default Re: fluorescent lamp and humidity issues

    Quote Originally Posted by YukYuk View Post
    you have not taught me a thing.
    Nor have you.
    "" an ounce of perception -- a pound of obscure "
    - Rush

  8. #8
    Join Date
    Jan 2008
    Location
    Lakeland ,MN
    Posts
    356

    Default Re: fluorescent lamp and humidity issues

    Quote Originally Posted by canuk View Post
    Nor have you.
    It is called a PHD at the university of Google.

    My dad always told me there were three degress

    BS is Bull Sh**
    MS is More sh**
    PHD is pilled high and Deep
    Harry

  9. #9
    Join Date
    Aug 2007
    Location
    The Great White North
    Posts
    4,045

    Default Re: fluorescent lamp and humidity issues

    Quote Originally Posted by Ravens53 View Post
    It is called a PHD at the university of Google.

    PHD is pilled high and Deep
    .... LOL
    "" an ounce of perception -- a pound of obscure "
    - Rush

  10. #10
    Join Date
    Jun 2008
    Posts
    1

    Default Re: fluorescent lamp and humidity issues

    I had the same humidity issues with two identical kitchen fixtures, here's what I found researching it:

    "If, under high humidity conditions, Rapid Start lamps start slowlyor do not start at all although the cathodes are properly heated,this may be due to dirt on the lamps which is offsetting the siliconcoating on the lamps, or it may be due entirely to a poor siliconcoating. If it is a new installation (in operation only a few months)which experiences random starting under high humidity condi-tions, in most cases it will be due to low supply voltage or poor silicon coating on the lamps. When random starting is experienced under high humidity condi-tions in an installation in operation for a longer period of time this isusually due to dirt on the lamps. The lamps should be washed inwater to remove the dirt."

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