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Old 07-11-2012, 04:04 AM   #1
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Flickering LEDs

I have noticed a that the overhead LED lamps flicker noticably from time to time for 10-30 seconds. The effect is similar to what an old CRT would do if set at too low a refresh rate. I did not expect to see this from DC voltage. I have also noticed the Maxx fan when running will rev up or down slightly (the pitch and sound of air movement sound changes) when the LEDs flicker - not sure if the fan is the source of the noise or also affected by it.

I have seen this both when connected to shore power and disconnected. Battery is at full charge. We have LED reading lights above the bed that do not flicker when the overheads do, but I am not sure whether it is the difference in the lamps or how they are wired.

Has anyone else seen this? Any suggestions for troubleshooting?
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Old 07-11-2012, 06:01 PM   #2
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Re: Flickering LEDs

I have the same problem with a couple of the LED fixtures in my 17B. I suspect it is a problem with the voltage regulation electronics built into the LED board...
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Old 07-11-2012, 10:22 PM   #3
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Re: Flickering LEDs

What type of LED units are giving the flickering results? Escape (and the RV industry) have used a couple of different types. I had the newer SMD type (3x6 18 LED lamp array) installed in my 2012 with great results. I was looking for good light output and warmer colour output. I've had zero flicker in any of the fixtures in almost 3 months of continuous camping since delivery. The other (non smd) led type commonly installed has a 3x5 15 led array or 5x5 25 array. I have no first hand experience with this type save for my outside light but I haven't spent any time out there with it turned on for long.
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Old 07-13-2012, 01:41 AM   #4
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Re: Flickering LEDs

About the Maxx Fan, ours does the same thing, changes speed for no apparent reason and starts resonating frequently. At first, I thought it was varying line voltage from the shore power, but I momitored that and when the speed of the fan changed, there was no change in voltage. So, I'm stumped as to what the cause is. Same with the resonation, no apparent connection to the line voltage. Anyone else having these issues with their Maxx Fan?

Doug
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Old 07-13-2012, 07:37 PM   #5
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Re: Flickering LEDs

I get an annoying resonance with the MF on low speed. No rhyme or reason but it may be related to the wind outside.

Dave
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Old 07-14-2012, 01:06 PM   #6
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Re: Flickering LEDs

The the max air resonance on its lowest speed is caused by the power electronics used in the speed controller to keep a powerful DC motor turning slowly. Mine is a little worse when the voltage is lower when I'm off shore power. Clears up completely kicking it up one speed of the ten available.
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