Converter

Wa8xym:

Really appreciate your effort to allay my concerns. I've always paid attention to your posts. Thanks to all of you who posted.

To the comment "Converters run when first plugged in" delete the word FIRST.
They run WHENEVER they are plugged in but the fan may or may not run, even if it is NOT plugged in, it's a 12 volt fan and on a T-Stat

To the comment "When the hum stops it's bad" may or may not be true, fans turn on and off based on how hot the thing is so once the batteries are full... They stop

Took a look at several WFCO converter products.. They do have a iron core transformer but it's not all that big so But on a "Replaced last summer" I doubt that is the source of the hum.. Fan most likely and simply cooled enough to turn off.

salem wrote:
I guess it was just charging the batteries.

And I guess you are just going to ignore the advice from a few of us to have your batteries tested ? and to get a meter ??

When was the last time that you checked the water level ???

It has stopped humming. Maybe it's always done that when first plugged in to electricity and I just never noticed. I guess it was just charging the batteries. Hey, fellas, thanks for all your comments. Leaving for the coast Monday.:)

How long was storage and did you top them off from time to time?

Batteries self discharge.

I have two 6v Interstate batteries that will be three years old in May. The converter, a WFCO, was installed last summer.

Humming is a good thing.... its charging. but if the Humming never stop.
your battery is not holding a charge. I would have battery tested..
good luck

The converter is always on when powered with 120V. If it sees a discharged battery and is a multistage charger, it will output the most current it can. After charging for many hours and the batteries are completely charged, the converter will lower it's output and, if a multistage charger, will revert to a float voltage and current.

For more focused advice, you can tell us what converter and how many batteries of what type you have.

salem wrote:
does the converter normally run for a while when first plugged in?

It runs all the time.

salem wrote:
My question is, does the converter normally run for a while when first plugged in?

The converter "runs" all the time that it's plugged into shore power; it just runs harder when first connected after a period of battery use or non-use storage.
That makes the hum more pronounced.

But this may also mean that your batteries are getting weak.....because they should not have lost much charge during that time if disconnected.