MaxAir vent opens and stays open but closes when I turn on the fan

[Livin' the Dream]

I read through the previous post regarding the vent not opening to see if there were any similarities with my problem, but no.

I can open my vent and it stays open, in fact all day yesterday it was open. As soon as I turn on the fan it runs for a couple of seconds, then shuts down, and the vent closes. I do have a cover over the vent so rain isn't the problem and it has worked in the past. Just started acting up this week. Thoughts???

[howson]

I read through the previous post regarding the vent not opening to see if there were any similarities with my problem, but no.

I can open my vent and it stays open, in fact all day yesterday it was open. As soon as I turn on the fan it runs for a couple of seconds, then shuts down, and the vent closes. I do have a cover over the vent so rain isn't the problem and it has worked in the past. Just started acting up this week. Thoughts???

Open the vent how--manually or electrically? When you turn on the fan with the vent closed, what happens? Is this a wall-mounted control powered unit or a wireless controller unit?

[boyscout]

I can open my vent and it stays open, in fact all day yesterday it was open. As soon as I turn on the fan it runs for a couple of seconds, then shuts down, and the vent closes. I do have a cover over the vent so rain isn't the problem and it has worked in the past. Just started acting up this week. Thoughts???

Well, this theory isn't completely coherent but how 'bout dirt or debris on the rain sensor? Something that could move around a little when air is blown over it? (This suggestion may reveal how little I know about the sensor!)

[Livin' the Dream]

Howard, it closes whether I open it via the control panel or by hand. I did just turn on the fan with the top closed and it stayed open a little longer then shut down again. As it was shutting down I hit the fan on button and it opened and stayed on. I'm beginning to think I have a bad controler

[howson]

Howard, it closes whether I open it via the control panel or by hand. I did just turn on the fan with the top closed and it stayed open a little longer then shut down again. As it was shutting down I hit the fan on button and it opened and stayed on. I'm beginning to think I have a bad controler

If an OEM install w/wired cntrllr there have been cases of staples drvn through the cable, shorting the wires.

[Livin' the Dream]

Oh, that'll be an easy fix........not!