Re: [RE-wrenches] older magnum MS

Sat, 14 Feb 2015 16:01:56 -0800

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" <d...@solarwork.com <mailto:d...@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*-d...@solarwork.com <mailto:d...@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" _**__*
*P*Please consider the environment before printing this email.
*From:*RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org <mailto:wrenches-boun...@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*
al...@sindelarsolar.com <mailto:al...@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


    _______________________________________________

    List sponsored by Redwood Alliance


    List Address:RE-wrenches@lists.re-wrenches.org  
<mailto:RE-wrenches@lists.re-wrenches.org>


    Change listserver email address & settings:

    http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org


    
List-Archive:http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html


    List rules & etiquette:

    www.re-wrenches.org/etiquette.htm  
<http://www.re-wrenches.org/etiquette.htm>


    Check out or update participant bios:

    www.members.re-wrenches.org  <http://www.members.re-wrenches.org>


_______________________________________________
List sponsored by Redwood Alliance
List Address: RE-wrenches@lists.re-wrenches.org <mailto:RE-wrenches@lists.re-wrenches.org> 

Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html 

List rules & etiquette:
www.re-wrenches.org/etiquette.htm

Check out or update participant bios:
www.members.re-wrenches.org




_______________________________________________
List sponsored by Redwood Alliance

List Address: RE-wrenches@lists.re-wrenches.org

Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org

List-Archive: 
http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html

List rules & etiquette:
www.re-wrenches.org/etiquette.htm

Check out or update participant bios:
www.members.re-wrenches.org




_______________________________________________
List sponsored by Redwood Alliance

List Address: RE-wrenches@lists.re-wrenches.org

Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org

List-Archive: 
http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html

List rules & etiquette:
www.re-wrenches.org/etiquette.htm

Check out or update participant bios:
www.members.re-wrenches.org

Reply via email to