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
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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