Hi fellow wrenches,

We have a client with the two of the original FX2024 inverters on the PS2 with 
the X240, serial numbers below 100. The original boards were replaced a couple 
years later. Now we are in a search for the board sets again. An option is to 
upgrade to newer inverters of course, if we can find a pair of VFX3524’s, that 
will satisfy the client. Thanks and don’t hesitate to contact me off list if 
you have these on the shelf.

 

Chris Worcester

Solar Wind Works

NABCEP Certified PV Installer

Office 530-582-4503

Cell 530-448-9692

Fax 530-582-4603

www.solarwindworks.com

[email protected]

 

From: RE-wrenches [mailto:[email protected]] On Behalf 
Of Wallace Stahle
Sent: Sunday, August 13, 2017 2:17 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Outback inverter generator question

 

Hi Ron,

 

An off list question posed to me asked how the non PFC charger could impact the 
results I described. 

I dont actually have a good answer for that. I simply see the bad results from 
the interaction of the Honda AVR and the VFX charger and the normal charging 
results of the MS2812 with the same Honda an hour later.

 

It was suggested that the PFC function alone would not be the issue but more 
likely the AVR.

No argument there. Although the gen output voltage would rise when charging 
when first looking into the problem.

The AVR was replaced that time. Normal function returned for several months 
then the described malfunction came to a head. Honda AVR topology vs FX charger 
topology would be my first though not proven conclusion.

 

Here is the latest comments from the list member who may have been considering 
my ego by asking me off list.

 

Is it possible the inverter was part of the problem, sure.  But replacing it 
with a magnum wasn’t the fix, the new inverter was.

Why was it the problem, harder to know.  Things do break, and which caused 
which we’ll never know.  Did the inverter have issues which caused the AVR to 
fail or did the AVR cause the inverter to be damaged?  But I don’t believe the 
issue of not having a PF corrected charger is an issue.  

Way too many OB in the field with no issues for that.

 

Yes the magnum has a PF corrected charger which puts less load on the 
generator, but thats all.  

 

So to re-summerize my improved conclusion: take pains to observe AC voltages in 
all three modes. Gen direct to loads if possible, inverter output only, then AC 
output while charging. Look to Honda AVR unit as possible cause

Thanks to Jay for not letting questionable conclusions go unquestioned.

 

Wallace Stahle

Future Electric Energy Co

PO Box 236

Willits, CA 95490

707-459-0474

Lic.#C10-762093

[email protected]

 

On Aug 13, 2017, at 12:54 PM, Ron Young <[email protected]> wrote:

 

Thanks Wallace, the thing is, the VFX3524 is not a cheap inverter and should 
perform well with a generator. However with the customer reporting his concerns 
about high heat in the inverter and now these problems I’m not sure where to 
pin the problem. I’ll see if he will check the inverter and gen. voltage 
output. 

Ron Young




On Aug 13, 2017, at 12:07 PM, Wallace Stahle <[email protected]> wrote:

I would look at the generator output voltage with charger in standby. 
Oops no mate = no control. Find a way to power loads directly and monitor gen 
voltage. With true RMS meter.
Check inverter output voltage alone. Then check AC voltage while trying to 
charge. 

I would suggest the AVR (auto voltage regulator) on the generator is drifting 
to a higher voltage, and/or the non power factor corrected charger in the FX is 
having a rather negative effect on the generator output WHILE charging. The 
error light reflects out of spec AC input I surmisre

A few years ago  a three year old VFX2812 began to misbehave on a system with 
Honda EM model gen. After observing high gen voltage, up to 134 v AC the AVR 
was replaced, Some improvement resulted. Not long after, the customer reported 
fried surge protecter plug strips and continuing light flickering beyond the 
usual variations.
I observed rapid voltage changes while charging, strange noise from the 
inverter and unacceptable down stream effects while charging.
I installed a Magnum  MS2812 in its place and all the ill effects were 
resolved. 

I will only consider a PFC charger since then. Budget not the only value to 
consider. Or rather pay now or pay later.
The customer absorbed the fried plug strips and some misc. equipment.  I 
absorbed the new Magnum  cost (and suspect VFX2812) and the lesson on 
interactions between equipment. Some things dont play well with other things.

Wallace Stahle
Future Electric Energy Co
PO Box 236
Willits, CA 95490
707-459-0474
Lic.#C10-762093
[email protected]






On Aug 12, 2017, at 5:32 PM, Ron Young <[email protected]> wrote:

Have a client where I recently installed an Outback VFX3524 inverter in June. 
He’s using a Honda generator and has recently started having issues. He has 
been complaining that the inverter seems to be running hot but I believe this 
is because he doesn’t have good ventilation around it. He is probably also 
running high on the loads. He doesn’t have a Mate so can’t identify the error. 
He is in a remote location and I am currently unable to travel due to fire 
restrictions in my area (major BC wildfires).

Here is his recent email:
-Seems the inverter is recognizing the power in as an issue, and throwing an 
error.
-My existing 5000 Honda generator has been online with the unit since you 
installed it. 
-The last few days, when there is very little load, or the unit goes to float, 
the generator goes into a high rpm.
-My existing 5000 Honda crapped out on me this morning, and holds a low rpm, 
not putting out much power.  Will run a tool, but still won’t hold a higher rpm.
-I borrowed an identical 5000 Honda generator, and it seemed to be doing fine 
for about 1.5 hours. 
-Now it’s doing the same thing as the other generator.  The inverter system 
throws an error, the generator is taken offline, and the generator rpm go up.
-If I manually manipulate the throttle not he generator lower, then the 
inverter re-engages.

What the heck could this be?  I don’t want to fry the borrowed generator, but 
we can’t systematically bypass the inverter, and the house requires the power.

Ron Young
earthRight - Solareagle
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