Green LED on Maxxfan 5100K

[Red Dog]

Anyone experience this situation?

Weather is nice. Not too hot or too cold.
Maxxfan 5100K is on.
Then, I hear an alarm coming from the Maxxfan and the green LED comes on. The alarm times out after several seconds, but the green LED remains on and the fan has stopped operating.
The on/off button will not respond.

The only way to restore operation is to pull and re-insert the fuse at the converter box. Then, all is well until the next incident, which may be months away. A bit annoying, but not impossible to live with.

Any thoughts?

Fred M.

[JEFF KY]

Here is what I found on a google search.
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Troubleshooting Flashing Green Light and Beeping from MaxxFan Deluxe

Question:
MA00-07500K Have had unit fitted and working fine for a few months I cannot now get weather cover to close had to do it manually and there is a flashing green light on control panel and a constant beeping What could this be and how can it be fixed please
asked by: Robert L
Expert Reply:
I reached out to my tech contact at MaxxFan about your MaxxFan Deluxe Roof Vent # MA00-07500K and he said the flashing and beeping shows a voltage issue. It is either too high or too low to function correctly so the unit is trying to alert you to the issue.

If you don't have a voltage meter, you can use the Powerbuilt Digital Multimeter # BTMT15 and select the 20 V on the reader in the 10 o'clock position. This will give you the voltage reading going to your fan so you can see if you have a wiring issue or a battery issue.

[cpaharley2008]

Looks like it is time to install one of those in line voltage regulators ..........

[Red Dog]

Thanks Jeff! Now, I know it’s not just me.

Jim, I actually have one of those installed in my 5100K.

Very interesting!

Fred M.

[tdf-texas]

Originally Posted by Red Dog

Thanks Jeff! Now, I know it’s not just me.

Jim, I actually have one of those installed in my 5100K.

Very interesting!

Fred M.

It might be a good time to pull out the voltmeter and check the voltage output of the regulator.

[Red Dog]

Originally Posted by tdf-texas

It might be a good time to pull out the voltmeter and check the voltage output of the regulator.

Good idea. I think I have a spare, in case the existing one is bad.

Fred M.

[jumboscott]

Had the same issue with fan and Green Light a few weeks ago. Did a reset like u did. Once reset, worked normally. It's like a Windows PC, issues, reboot!

[jerryc]

It seems I remember this being discussed on the Casita Forum. Someone posted that if one looks at the manual that comes with the unit, the max operating voltage was like 13.5 volts. Way too low for many converters, nowadays. Don't know if this is true, as I don't have one, but if so it could definitely lead to intermittent alarms and malfunctions.

[cpaharley2008]

Gremlins..........