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Author Topic: XPD3 stopped responding to codes after 2 days?  (Read 4714 times)

WilkBoy

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XPD3 stopped responding to codes after 2 days?
« on: May 31, 2011, 11:03:04 PM »

Hi everyone, this is my first post here. I have only been using X10 for a few weeks. I tried to find a solution in the forums but couldn't really seem to figure it out.

I installed an XPD3 in my shed a few weeks ago and it has been working great so last week I decided to get another one for my porch lights. I setup a timer for it to go on at dusk and off a couple hours later. For 2 days it worked properly, but all of a sudden it's not turning the lights on or off from the codes. It works fine if I press the button manually. It is hooked up to 2 incandescent lights. I verified the black is hooked up to line, and blue is on load.

From what I have read it could be noise? but I haven't plugged in anything new since it stopped working. My shed is a little over 100 feet from the house and I never have any issues with that swith. My porch lights are probably only 30 feet from the panel. If it was a noise problem would I expect to see it on other modules too?

One thing I noticed when I installed the switch, was that the codes were not set to the default A1 that the manual says it should come with. I'm wondering if this was somehow a return that someone else had a problem with. I have also noticed a buzz sound from the switch when the lights are dimmed but I'm guessing that's normal?

Thanks,
Chris
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Noam

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Re: XPD3 stopped responding to codes after 2 days?
« Reply #1 on: June 01, 2011, 09:56:56 AM »

It works fine if I press the button manually. It is hooked up to 2 incandescent lights. I verified the black is hooked up to line, and blue is on load.
Can you control it at all manually from within the software?

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From what I have read it could be noise? but I haven't plugged in anything new since it stopped working. My shed is a little over 100 feet from the house and I never have any issues with that swith. My porch lights are probably only 30 feet from the panel. If it was a noise problem would I expect to see it on other modules too?
Noise can come from outside your house, too. (As many other members are singing along right now,) I had a noise problem last year that was created by a bad CFL bulb in the house across the street from mine. We are on the same transformer, and the noise was strong enough to make it across the street into my system and interfere with it.
Is your CM15A on the same phase as those lights, or the other phase? That can make a major difference with signal strength. YOU might not have changed anything, but you could have a CFL or standard florescent bulb that is going bad (that happened to me, too!), which is creating more noise than it did before.

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One thing I noticed when I installed the switch, was that the codes were not set to the default A1 that the manual says it should come with. I'm wondering if this was somehow a return that someone else had a problem with.
It is entirely possible that it was a return, but then it should not have been sold as a new unit. X10 should replace it for you if it is defective.

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I have also noticed a buzz sound from the switch when the lights are dimmed but I'm guessing that's normal?
Buzzing is actually normal for most dimmers (even the old manual kind). Most dimmers don't work by reducing the voltage going to the light. Here in the US (and Canada), our 110V power is a sine wave, alternating polarity between positive and negative at a rate of 60 cycles per second (60Hz). Most dimmers "chop out" part of that wave, turning the light off for part of the cycle. It happens so rapidy that your eyes and brain see the average, which is why the light looks dimmed. For example, dimming to 50% is really chopping out enough of the sine wave that the light is off for half of it. The buzzing that you hear is that rapid switching of the light.

I hope that makes sense.
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WilkBoy

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Re: XPD3 stopped responding to codes after 2 days?
« Reply #2 on: June 01, 2011, 03:25:37 PM »

Thanks for the reply Naom. Everything made sense.

I forgot to mention I can't even manually control it from AHP software now.

How can I tell if the XPD3 is on the same phase as the CM15A? I guess I would have to look at where the breakers are installed in the panel?

I read that turning on the dryer can help to couple the phases. I tried it, but it didn't help. I was looking at those passive couplers. It sounds like it's a good thing to install regardless of whether it solves this issue or not though.
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dave w

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Re: XPD3 stopped responding to codes after 2 days?
« Reply #3 on: June 01, 2011, 05:33:05 PM »

I was looking at those passive couplers. It sounds like it's a good thing to install regardless of whether it solves this issue or not though.
Considering the cheap X10 repeater (XPCR) is only $20 on Ebay, don't waste your money on a passive coupler. Because a repeater boosts the X10 signal on both phases, it can many times solve noise issues by amplifying the X10 signal to the point it is greater than the noise.
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WilkBoy

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Re: XPD3 stopped responding to codes after 2 days?
« Reply #4 on: June 03, 2011, 11:59:14 PM »

I took your advice Dave, and bought an XPCR. Guess what, it fixed my problem just like magic! -:)  I really think these should be standard issue. By the time I bought the xpcr, breaker, and a metal box to put it in, I spent $60, but it was well worth it.

It doesn't explain why the switch stopped working in the first place, but I guess it doesn't really matter now.

Thanks for your help guys.
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Brian H

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Re: XPD3 stopped responding to codes after 2 days?
« Reply #5 on: June 04, 2011, 06:04:46 AM »

Thanks for the update.
Something changed signal wise. Though finding the exact cause maybe a mystery. Without some X10 signal testing equipment.
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