It says "SET EXERCISE SWITCH".
SW2B connects transformer T1 to the Control Logic PCB. T1 output might
be rectified and used to charge the battery while on shore power, but
does not seem to be documented.
On Sunday, December 21, 2014 1:18:23 PM UTC-5, Fred McKenzie wrote:
I see how one wire goes from that switch to the Xformer, another wire
to the control board, another to the battery. I can't make out from the
pic what kind of switch it even is, single pole, double throw? It would
be bizarre for it to connect the Xformer to the battery, as there is
no rectification there, ie it's AC. And "set exercise" would seem to
mean that all it does is enable the weekly startup, or somehow let you
program how often it does that.
IDK what's going on, but from what I see, I agree it's not clear that
it does maintain the battery. I'd say more likely it doesn't at this
point, but then who knows. You would think having the generator maintain
the battery would be a standard feature, important to have, easy to implement,
etc. So, I would think they would all likely have it, but as I said,
all I know is what you do, ie that some of them definitely have it. D's
is an older one. The one I have experience with is under 10 years old.
It really doesn't matter, more of a curiousity at this point.
trader_4 wrote, on Sun, 21 Dec 2014 10:45:21 -0800:
I have a call in to Generac (left a message), so, hopefully on
Monday, they'll let us know how the battery is charged.
I wish it would say so in the manual.
If it matters, here are the 32 pages of the manual.
Page 1 = https://www.flickr.com/photos/98287134@N02/15878930218/
Page 32 = https://www.flickr.com/photos/98287134@N02/15444042424/
With this being the week of Festivus, good luck with that...LOL.
What you could do is open the hood on your generator and measure/record the battery voltage.
Then disconnect the ground lead of the battery, wait 24 hours, and measure the battery voltage again.
If the battery voltage drops after being disconnected from the generator for 24 hours, the generator obviously has a grid-powered charging circuit.
Is this "Oren"?
Anyway, I was dead wrong and all you guys were right (as usual).
I called Generac at 888-436-3722x2(consumer)x2(existing product)x2
The lady who answered said instantly that all the built-in generators
are charged from the "T1" wire from the house.
She said the "T1" wire was blue or white and went in behind the
control panel. She didn't know the difference between 120VAC and 12VDC,
but still, she was sure that the T1 wire fed the battery.
She said when it exercises, it doesn't generate any power.
So, based on that, I was dead wrong.
The built-in generator charges the battery from the mains.
I was wrong.
On Monday, December 22, 2014 2:11:06 PM UTC-5, Danny D. wrote:
If, given the context, she means the generator doesn't charge the
battery during the brief weekly exercise, she's doesn't know WTF
she's talking about. Which is probably the case, since she apparently
doesn't know the difference between 120V and 12V. Good person to have
on the gen hotline. And reinforces my dim view of Generac.
It generates power to charge the battery, to run the engine ignition.
It's just not connected to the house to power it.
As I posted earlier, my Generac works as you now state. It only charges
the battery when not running, and when the electric company power is
available. I did go to the authoritative site for Generac repairs,
Ziller, and did learn that some of their products do indeed have a
winding on the generator coil which provides a low AC voltage for
rectification / making 12VDC.
The distinction of which Generac has or does not have this "charge when
running" feature is thus model specific, and getting a schematic for
your specific model would be the way I would research it if the Ziller
experts had no opinion, (an unlikely scenario).
On Tuesday, December 23, 2014 10:31:58 AM UTC-5, Smarty wrote:
I'm 99% certain you're wrong on that. The Generac I'm familiar with
charges either from AC or when the generator is running. It would
be pretty dumb to have a design where once power is lost, the generator
battery can't be recharged. Even D's generator clearly has a charging
circuit off the generator itself. If you have a link for a schematic
to your generator, I'd be happy to see it.
So far, the one you say you have is the only one I've heard of
where the generator isn't capable of charging it's own battery.
On Tuesday, December 23, 2014 11:50:35 AM UTC-5, Smarty wrote:
I scanned through the first page or so, nothing there that's even
a hint of proof that the generator doesn't charge the battery. An
aimless thread doesn't prove anything.
As I said, if you have a schematic, maintenance manual or similar
for your generator, that shows what you are saying, I'd be happy to see it.
trader_4 wrote, on Mon, 22 Dec 2014 13:05:14 -0800:
This is what she said.
She was clear.
But, it was also clear she didn't realize 120VAC doesn't directly
charge 12VDC, nor that it takes more than that one T1 wire.
So, I'll call again tomorrow and hopefully get someone who knows
a bit more. Or I'll ask them to ask someone who knows.
Tekkie® wrote, on Fri, 09 Jan 2015 16:19:34 -0500:
Actually, in hind sight, the metal cap on the boot was stuck so
tightly to the spark plug by friction alone, that the boot was
"stretching", which, when I let go, allowed it to "snap back".
The old spark plugs were nearly pristine on the ends, as there
was no corrosion whatsoever on the ends so the boots were clearly
I did put some dielectric grease in there anyway, along with
anti-seize sacrificial-anode paste on the spark plug threads.
Power went down twice more since this thread was started, and
everything worked just fine.
Then why have the generator? I love the thought of going out on a blizzard
night when the power goes out, the garage door won't open and the car
battery is dead. Oh wait, I have to put that on hold because the pipes are
freezing. I can't think over the noise of the wife letting me know what I
should have done.
On Tuesday, January 13, 2015 at 3:45:44 PM UTC-5, Tekkie® wrote:
It's mitigated by the fact that Danny lives in northern CA where the
climate is more moderate. He does say the power seems to go out a lot
though. If it were me, I'd agree, having an older battery that the shop
tested and said was on the last 25% or so of it's life, I'd just replace
it. But where he is, if it won't start, not too likely he'll have to
deal with it in a blizzard or hurricane. It also depends if it;s where
you can pull the car up and easily jump it. But like you, I wouldn't want
to deal with that even at 9PM in the dark, when a new battery doesn't
cost that much.
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