From: Richard Kahn

From: Richard Kahn To: "Jeffrey E." <[email protected]> Subject: Prosolar Date: Wed, 05 Sep 2018 12:34:49 +0000 solar now not working... hoping brice did not tweak system as he said he was going to stay on GSJ last night also told me yesterday that no one stayed on GSJ since glidden left.. Richard Kahn HBRK Associates Inc. 575 Lexington Avenue 4th Floor New York, NY 10022 tel fax cel Begin forwarded message: From: Subject: Re: Friday June 29th Date: September 5, 2018 at 7:22:04 AM EDT To: Dan Prosolar < Cc: Marcelo < > Brian Walden < > " Morning Same issue no power again Sunny islands dead Sunny boys flashing yellow Please as to what you would like to do Brice Sent from my iPhone On Sep 4, 2018, at 12:11 PM, Dan Prosolar > wrote: good morning all! hope everyone had a great weekend.. minus GSJ with no power. >, Brad Spernak 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. EFTA01024334 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 Sent from my iPhone fr-> wrote: On Jul 11, 2018, at 2:10 PM, Marcelo <a 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 <401A334B1BB040DOBBA29AA3089AB844[431569].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. EFTA01024335 -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. -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 EFTA01024336 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 tel fa eel On Jul 10, 2018, at 2:18 PM, Brian Prosolar fr> 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. 3 On Jul 10, 2018, at 1:50 PM, Richard Kahn <MMIla wrote: i have not yet heard back from anyone on a time to speak EFTA01024337 please advise thank you Richard Kahn HBRK Associates Inc. 575 Lexington Avenue 4th Floor New York, NY 10022 tel fax cel 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 Lexington Avenue 4th Floor New York, NY 10022 tel fax cel 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, wrote: EFTA01024338 Brian Walden ProSolar America, 11c Director of Operations c. 1 On Jun 29, 2018, at 1:20 PM, Richard Kahn • please confirm what time you will be arriving at GSJ on Monday thank you Richard Kahn HBRK Associates Inc. 575 Lexington Avenue 4th Floor New York, NY 10022 tel fa)i ce wrote: 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 of line and that is working for the interim. Regards, Brian Walden c EFTA01024339 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 Lexingta Avenue 4th Floor New York, NY 10022 to fa ce > wrote: 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 c.. 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 Y rk NY 10022 tel fa ce wrote: EFTA01024340 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 ProSolar America, LIc Dir. of Operations c .-- - ---- > wrote: 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 fax cell EFTA01024341 <401A334B1BB040DOBBA29AA3089AB844[431569].jpg> Prosolar Systems Caribbean: 340-201-4752 Florida: 850-222-3554 Let's Get Social EFTA01024342