From: Richard Kahn

From: Richard Kahn To: "Jeffrey E." <[email protected]> Subject: Prosolar update Date: Tue, 04 Sep 2018 16:48:16 +0000 Richard Kahn HBRK Associates Inc. 575 Lexington Avenue 4th Floor New York NY 10022 tel fa cell Begin forwarded message: From: Dan Prosolar < Subject: Re: Friday June 29th Date: September 4, 2018 at 12:11:51 PM EDT To: Cc: Marcelo < >, Brian Walden >, Brad Spernak >, > good morning all! hope everyone had a great weekend.. minus GSJ with no power. i feel very good about my visit today. i was receiving error codes pertaining to an OVER-VOLTAGE situation. this is great news considering we have been fighting the opposite problem since the hurricanes. i have had the system set to perform at the absolute peek voltage it can to avoid loosing power. this maximum voltage setting teeters the system on the edge of its capabilities. as we see now it has obtained and exceeded its voltage setting limits on the sunny islands. there is no damage done, only the inconvenience of it shutting down to protect itself. Today i throttled back the target voltage by Iv. this should prevent more shutdowns due to over voltage. i think we have got this system dialed in. All the best, Dan Chrisman On Mon, Sep 3, 2018 at 6:57 PM, Good Evening The solar system is down on GSJ No power Sunny islands Sunny boys seem to be in alarm Cluster box no power Please advise as to Dans schedule Regards Brice > wrote: Sent from my iPhone EFTA01024441 On Jul 11, 2018, at 2:10 PM, Marcelo > wrote: Good Afternoon Richard, Please see the below email containing Dan's summary of what actions he performed on his last visit to GSJ. Regards, Marcelo Perez Project Manager 941.275.5186 <401A334 B1 BB040D0BBA29AA3089AB844[431569 J. jpg > From: Dan Prosolar Sent: Wednesday, July 11, 2018 1:10 PM To: Marcelo Subject: Re: FW: Friday June 29th Good afternoon all, sorry for the delay my email had an issue and became unlinked so I wasn't receiving these untill now. Regarding GSJ here is what's been achieved. -all Aquion battery modules are wired to bypass the corroded, water damaged circuit boards that could interfere with charging profiles. -sunny islands (6) were downgraded to firmware version 6.0.02. This was done to allow a broader, linear charge profile to be set -charging parameters are now based on voltage set points rather than state of charge calculations done internally with different references. EFTA01024442 -max charge voltage has been set to 58.5V and the batteries will not stop charging untill a voltage 1.5V over the set limit is a achieved for 15 seconds. This gives them the ability to serpase the previous charge voltage of 56.7V - the main issue that caused so much down time before was as follows. A target charge voltage that matched the Aquion batteries was not possible with the previous profile. Compiled on that was faulty Aquion circuit boards preventing the batteries from properly charging to a suitable voltage. Aquion, as we know, is no more, so it's impossible to obtain replacement parts. Aquions bms never met the as advertised performance and created more issues than we could have imagined. In short, the changed I made allowed for a higher, more suitable battery voltage to be achieved and prevents the premature shut down we saw before. Again, sorry for the delay, hope all is well Thanks Dan Chrisman Senior Technical Specialist Prosolar LLC From: Richard Kahn Sent: Wednesday, July 11, 2018 10:30 AM To: Brian Prosolar Cc: Brad Spemak; michael glidden; Subject: Re: Friday June 29th can we do thursday morning or anytime friday when can expect Dan's summary? please advise thank you Richard Kahn HBRK Associates Inc. 575 Lexington Avenue 4th Floor New York, NY 10022 to EFTA01024443 fax cell On Jul 10, 2018, at 2:18 PM, Brian Prosolar wrote: Afternoon Richard, Brad is traveling to San Francisco for a conference and I'm boarding a plane to STX. I've asked Dan to write a synopsis of his efforts and we have been monitoring for proper function. I'll relay this tomorrow once he's finished. We're still evaluating but all is functioning as intended for the moment. Additional monitoring and confirmation are needed since the weather over the last week has been extremely cloudy. Would it be possible to have our call on Thurs. afternoon at 3 EST? Regards, Brian Walden ProSolar America, Ilc Director of Operations c On Jul 10, 2018, at 1:50 PM, Richard Kahn < i have not yet heard back from anyone on a time to speak please advise thank you Richard Kahn HBRK Associates Inc. 575 Lexington Avenue 4th Floor New York, NY 10022 tel l fa ce wrote: EFTA01024444 On Jul 9, 2018, at 5:36 PM, Richard Kahn wrote: can we please arrange a call for tomorrow to review current status of GSJ solar thank you Richard Kahn HBRK Associates Inc. 575 Lexingta Avenue 4th Floor New 22 tel fa cell On Jun 29, 2018, at 1:36 PM, Brian Prosolar Afternoon Rich, I believe the normal boat arrival time is 8 or 8:30 a.m. in Redhook. Dan will be there. Regards, Brian Walden ProSolar America, llc Director of Operations c. wrote: On Jun 29, 2018, at 1:20 PM, Richard Kahn . > wrote: please confirm what time you will be arriving at GSJ on Monday EFTA01024445 thank you Richard Kahn HBRK Associates Inc. 575 Lexington Avenue 4th Floor New York, NY 10022 tel fa cell On Jun 28, 2018, at 1:42 PM, Brian Prosolar < wrote: Afternoon Richard, We're still trying to have a final discussion with Stefan as well as track down multiple 128MB or smaller SD cards to reboot the Sunnyboy inverters. We're moving as quickly as we can in order to execute the conversion plan but it looks like we have to push to Monday. Dan has shown Michael how to get the system back up and operating in the event of it dropping offline and that is working for the interim. Regards, Brian c On Jun 28, 2018, at 11:08 AM, Richard Kahn please confirm that you will be at GSJ tomorrow to work on the Solar thank you Richard Kahn HBRK Associates Inc. 575 Lexington Avenue 4th Floor New York, NY 10022 tel fax cell > wrote: EFTA01024446 On Jun 25, 2018, at 7:27 PM, Brian Prosolar < wrote: I want to ensure we have the PCB bypass discussion with the engineers prior to the visit and will try to expedite. Brian Walden EE/RE Consultant On Jun 25, 2018, at 5:05 PM, Richard Kahn we are without any solar currently can you please try to have dan come sooner thank you Richard Kahn HBRK Associates Inc. 575 Lexington Avenue 4th Floor New York, NY 10022 tel a fa cell On Jun 25, 2018, at 4:31 PM, Brian Prosolar < Afternoon Richard, I have Dan on the schedule to head to GSJ on Friday. Regards, Brian Walden > wrote: > wrote: EFTA01024447 ProSolar America, LIc Dir. of erations c. On Jun 25, 2018, at 3:30 PM, Richard Kahn < > wrote: can you please advise when your men can come in and fix our solar system thank you Richard Kahn HBRK Associates Inc. 575 Lexington Avenue 4th Floor New York, NY 10022 tel l fa ce <401A334B I BB040D0BBA29AA3089AB844[431569].jpg> Prosolar Systems Caribbean: 340-2014752 Florida: 850-222-3554 Let's Get Social EFTA01024448