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Old 04-17-2010, 04:49 PM   #1
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delayed power to light


Put up a new ceiling fan with light and installed new wall switch. Now when I turn the light on at the switch there is a slight delay to power on. I've already done the obvious, replaced switch again. What do I look for next?. I've installed these same switches in other parts of the house with no issues.

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Old 04-17-2010, 05:50 PM   #2
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What type of lamp (bulb) is it?

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Old 04-17-2010, 06:02 PM   #3
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What type of lamp (bulb) is it?
no markings on the bulb but install manual says they're 40 watt candelabra.

Might also add that this only happens with the switch, when the power is already on and I use the chain to power the light on and off all is good.
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Old 04-17-2010, 06:54 PM   #4
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delayed power to light


Are you using CFL lamps? Many I have seen take a second to come on after the switch is turned on.
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Old 04-17-2010, 07:01 PM   #5
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Originally Posted by Osh View Post
Might also add that this only happens with the switch, when the power is already on and I use the chain to power the light on and off all is good.
These symptoms make no sense to me electrically unless possibly your fan has an electronic control module inside.

A distant other possibility is a bad connection between the switch and the fan that heals itself as more current is drawn and it heats up. This possibility can be checked with DVM.

Last edited by Yoyizit; 04-17-2010 at 07:49 PM.
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Old 04-17-2010, 08:06 PM   #6
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Leave the light on for awhile then test.

I agree with
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These symptoms make no sense to me electrically unless possibly your fan has an electronic control module inside.
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Old 04-17-2010, 08:58 PM   #7
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What type of switch did you install?
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Old 04-17-2010, 09:24 PM   #8
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What type of switch did you install?
single pole.

I'll try Voltech's idea tomorrow when I go back. It's a old 1925 Sears house my wife inherited from her father and we're just trying to get it sellable with no issues. haha!!!
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Old 04-18-2010, 04:47 AM   #9
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delayed power to light


All the new ceiling fans I noticed that they have to meet the Engery pact and UL requirement that they put in watt limter device so it will sense how much current it will allowed before it get over the limit.

so it getting common to see it on it now.

Merci,Marc
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Old 04-18-2010, 10:47 AM   #10
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they put in watt limter device so it will sense how much current it will allowed before it get over the limit.
This is an electronic version of a low-flow shower head.

So, the cold incand. filament drawing 10x to 15x normal current fools the limiter into thinking that the lamp is drawing enormous power, which it is doing for a half second or so.

More complexity = less reliability.

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Old 04-18-2010, 12:14 PM   #11
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Leave the light on for awhile then test.

tried that this morning, no joy.
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Old 04-18-2010, 07:46 PM   #12
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I thought that such a system would draw lots of power first and ask questions later.

Namely power up "normally". The limiter would monitor the current for a few seconds and if the draw was excessive, shut off the lights.

An alternate reason for a delay would be to let the fan come on first, where there is also a large startup draw, then cut in the lights after the fan has gotten up a little speed and its power draw gone down. To me this seems like unnecessary complexity given that the energy law does allow a short period of high draw while the limiter circuit figures things out.
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Old 04-21-2010, 07:19 PM   #13
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Just wanted to report back and thank everyone for their help and suggestions. Got good news and bad news. The bad, it still happens. The good(?) maybe, is the second light, same model, in another room does the same.

It's a Harbor Breeze/ Springfield model# E-BDB52BNK5BC4

sold by Lowes
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Old 04-21-2010, 08:37 PM   #14
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Originally Posted by Osh View Post
The good(?) maybe, is the second light, same model, in another room does the same.
It's a Harbor Breeze/ Springfield model# E-BDB52BNK5BC4
E-mail the manuf. I didn't see anything in the specs to 'splain this behavior. I guess it could be your house wiring connection integrity.

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Old 04-21-2010, 10:10 PM   #15
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Quote:
Originally Posted by Yoyizit View Post
I guess it could be your house wiring connection integrity.
Thought that might be the case also but I put in a 3rd ceiling fan from another manuf in yet another room with no issues.

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