[RE-wrenches] older magnum MS

[Ray Walters]

I know we beat this earlier on the thread, but I had similar problems 
with SW inverters back in the day, that were fixed with a 50 mF cap.  
Reread that whole throead as there were definitely potential problems 
associated with that fix, but we found it worked fine, and never had any 
other issues.

R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760

On 2/14/2015 1:44 PM, jay peltz wrote:
> 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 
> <mailto: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 <mailto:dana at solarwork.com>  
>> -*Web*-solarwork.com <http://solarwork.com>
>> *O*- 970.626.5253 *C*- 208.721.7003 - No FAX Line
>> *_"Responsible Technologies for Responsible People since 1988" _**__*
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>> *From:*RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org 
>> <mailto: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 <mailto: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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