[RE-wrenches] older magnum MS

[jay peltz]

HI Dana, and others.

I talked to Magnum yesterday and they said there have been no upgrades really since new.  ( my clients has serial # 136)
Except better control of the search mode, around serial number 350.

This doesn't seem to jive with what a few others have said or my experience, but I guess that leaves no where to go with it.

I also asked about upgrading it, and yes cheaper to buy a new one.

If anyone else has any info I"m still interested,

thanks

jay

peltz power

PS if I get really motivated I"ll borrow an oscilloscope and test the old one vs a  new one.






On Feb 12, 2015, at 5:04 PM, "Dana" <dana at solarwork.com> wrote:

> The old Trace SW series had a similar issue with Rogers-White(?) boiler controls. It had to do with how the sine (pseudo) wave crossed the X axis. It was too long a space and the controllers just sat there definitely on but doing nothing. I was shown this on an oscilloscope and it was very obvious.
>  
> ----------------------------------------------------------------------------
> Dana Orzel
> Great Solar Works, Inc -  NABCEP # 051112-136
> E - dana at solarwork.com  - Web - solarwork.com
> O - 970.626.5253  C - 208.721.7003 - No FAX Line
> "Responsible Technologies for Responsible People since 1988" 
> P Please consider the environment before printing this email.
>  
>  
> From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Allan Sindelar
> Sent: Thursday, February 12, 2015 5:58 PM
> To: RE-wrenches
> Subject: Re: [RE-wrenches] older magnum MS
>  
> Jay,
> I can't answer your question, but only relate that I had a similar experience.
> 
> An early Magnum MS4448AE would not reliably start and run a modern hydronic boiler in an off grid home. I had opened a case with Magnum tech support, but the frustrated HVAC contractor pulled the unit and installed a different brand of boiler and the problem disappeared. 
> 
> In my own home my MS4024AE has nothing it won't run, and it's a newer unit. But whether that's coincidental or the result of an inverter firmware or hardware upgrade, I can't say. Maybe Gary Baxter can?
> Allan
> 
> Allan Sindelar
> allan at sindelarsolar.com
> NABCEP Certified PV Installation Professional
> NABCEP Certified Technical Sales Professional
> New Mexico EE98J Journeyman Electrician
> Founder (Retired), Positive Energy, Inc.
> 505 780-2738 cell
> 
>  
> On 2/12/2015 2:13 PM, jay peltz wrote:
> HI All,
>  
> I"ve had someone ask me about the following magnum and I know there are many more experienced folks that maybe can chime in.
>  
> MS4448
> V1-00138
> 2007
>  
> The problem is that for the life of the inverter it hasn't worked well for things like digital/electronic washer/dryers, even glow bar ovens etc.
> I don't have all the specifics yet and haven't visited the site.
>  
> With new units I've not seen this.  Are there some issues with these older units?
> And if so, any fixes?
>  
> thanks
>  
> jay
>  
> peltz power
>  
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