[RE-wrenches] Fronius IG4000 problem

[Bob-O Schultze]

William,
Just the opposite situation here. We've been using Fronius almost  
exclusively for the past four years with very few issues at all. The  
few we have had Fronius tech support was all over it PDQ.
Go figure.
Bob-O

On Apr 18, 2009, at 2:04 PM, William Miller wrote:

Larry:

We have had an almost 100% failure rate for Fronius inverters.  This  
is including replacing many of them multiple times.  We are about  
ready to replace 6 LV4550s with 3 Plus 10,000s. I will let you know  
how it works out, but we are very underwhelmed.

William




At 12:12 PM 4/18/2009, you wrote:
> Wrenches,
>
> A Fronius IG 4000 is doing some weird cycling. Every 45 seconds the  
> voltage pops up to Voc and drops back to Vmp immediately followed by  
> a downward ramp of voltage and corresponding rise in current. This  
> repeats continuously. PV array Vsc is constant and all strings are  
> +/- 1 volt DC. I spoke with Dan at Fronius and they are working on  
> it. BTW, very helpful and immediate response from Fronius.
>
> Has anyone else seen this occur? This is the second problem with  
> this inverter so I am wondering how Fronius is holding up for others.
>
> Kindest Regards,
>
> Larry Crutcher
> Starlight Solar
> (928) 941-1660
> Renewable Energy Products, Service and Installation
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