Green Bum

Sorry Guys! I picked up the thread regarding mixing 15 a 16 cell batteries..... Pylon & Revov Not a good idea!!

Following a recommendation, I want to increase my Pylontech US 3000 3.5 kw/h capacity to 8.7kw/h with a Revov 5.2Kw/h Manufactures do not want you to mix batteries, I believed this was for their commercial benefit. BUT!! I see the float charge (Revov 54.5 V) (Pylontech 51.8-52V) Bulk charge (Revov 55.5 V)(Pylontech 52.5 V) Low voltage disconnect (Revov 49V) (Pylontech 44.5 V) As I understand the upper and lower levels of charging and dis-charging are critical in the life expectancy of batteries Do you think the two batteries can be effectively combined? Thank you for your time!! Greenbum

Hi Guys I have been working with Lion-run on a Infini 3kw plus (Replus) inverter fan-fault error 27 (5.5) on his Our inverters only have 3 wires, thus not the PWM 4th wire and pin. Our fan controlled only by voltage input!

Hi Lionel, bad news! today my first fan fault error with the new fan! I think my problem is the feedback and therefore decided to split the cooling and feedback systems. a) Cooling now done with the new Delta fan + (for insurance) a cheap 80mm computer 2 wire fan, both running of the nr. 2 board connector. b) Feedback system, the yellow feedback wire for connector nr. 2 now coming from the bridged yellow feedback wire from board connector nr. 1, I don't recall ever finding a stagnant fan during a fan fault alarm. Even though the biggest risk would be a fan not starting up, my fault seems to be triggered while the fan is running???? A Few Observations! 1. I have still not exchanged the nr.1 and 2 connectors on the board to see if the voltage output is the same. You mention, "This led me installing the Voltmeter on both their two board connectors..." I presume you got a similar output and that the slow "take of" for the Delta fan was not due to a lower output. 3. I am hoping that drawing power for two fans from the one board connector is not bad for the chip!! 4. It seems the fans are triggered by a heat sensor and a sudden increase in load irrespective of heat. 5. I wonder if one would be able to use the current fan power-output to switch a relay and an external 12V power supply to run the fans? I realize you will not get the variable speed but I would prefer the crisp start-up and the option to use more fans Cheers Green Bum

Hi Lionel, One question, i find my my new fan "lazy" in starting up, it takes a second or two in response to loads to start up. It will typically oscillate back and forward and then get going while my Nr.1 fan just gets going without the same hesitation. I tested the new fan on a 12V battery and no problem, got going without hesitation. I have not swopped the connectors of NR. 1 and 2 around to see if i get the same hesitation but will try this later.. Have you experienced this "hesitation"? Regarding the change in direction of the fans, I live about 40km from the see, I checked for oxidation but this did not seem to be a problem, only the dust issue... I have decided for the time being to leave it as is. Regards, Godfried Green Bum

Hi Lionel, No more BEEEEEEP Fault code 27 alarms! I managed to get 2 Delta fans also (used) through a contact in Germany. THANK YOU for sharing the Delta specs! I would like to make a contribution that will benefit others using this Voltronic inverter branded as Infini, Replus I believe Giant Power IGS 3000 (in Australia) etc. The cooling system is sub-system, on top of the the heat management system. If the heat rises to high a fault code 7 will be displayed and the load switched off. This active cooling with fans seems to be vulnerable to either fans giving problems or the the feedback system (3rd wire). I have battled to find replacement fans. The original ADDA fans are expensive, difficult, and slow to import furthermore I could not find a generic alternatives in South Africa. A new discovery while waiting for my replacement fan. I decided to cut and bridge my 3rd yellow feedback wire from my "working" nr. 1 fan to the nr. 2 fan. My nr. 2 was still running be giving a error 27 Fault code. After bridging no more fault code! I realize this is a short term and somewhat risky solution but valuable if you are stuck ! I would like to explore alternatives that would open up more options to manage this cooling sub system in terms of the feedback loop and different fans that can be used If you split the ground and 12V wirers leading to the nr. 1 and 2 fans and simply placed two cheap pc fans at the top of the inverter you should be able to use almost any fans to move the air in combination to achieve the "56CFM" required If I was able to "trick" the system in believing the nr.2 fan was running as required could one make a plan to provide this signal in some other way? Could one use a timer based or permanently running fan to do the cooling? I started thinking of ways to change the cooling into a "passive" cooling system, increasing the cooling surface, using liquid cooling, using a convection system to draw/force air through the heatsinks etc. My inverter is has already paid itself so I am more comfortable to start playing with alternative answers to this challenge. Green Bum

Hi Lionel, I have been thinking about your top down cooling solution, but it is keeping me awake! 1. I think except as acting as air outlet, the mesh filter at the top of the machine is there to keep stuff from falling into the the inverter and potentially causing BIG problems 2. Obviously the warm air will move upwards, with you forcing it the other way, I wonder how much cooling will be sacrificed?? 3. I am with you regarding the "moisture damage" and problems with the dust.... I am looking at installing a long sock or stocking "filter" below the intake to try and provide some filtration. Best, Green Bum

Hi Lionel, Thank you for the detailed feedback! Voltronic (Infini) changed the fan on later models to a 92mm! I live in Cape Town and will start the search for your generic (Delta) fan. I am a technical novice but appreciate your inputs. Regards, Green bum Where would you recommend me to find the fan??

Hi Irfan and Lionel, I have a simmilar error 27 fault on my 7 year old infini 3kw plus have you been able to fix your fault. Lionel, did your DIY exchange of fans do the trick?? This type of error 27 Fan Fault seems to be a common fault on a otherwise reliable inverter! Regards Green Bum

Hi, my 3kw Infini is still set to the original "0W" factory setting and therefore consuming 80w during the day... I want to set it to the -100w but not sure weather my Itron prepaid meter will object (go into tamper mode) with the possibility of feeding 10-15W into the grid? Can anybody please help

Hi sorry for the delay..... Yes I sorted the problem by cleaning the air vents at the top of my inverter using a vacuum cleaner... I also opened the inverter and used a blower to clean the inside.... Problem solved Hope this helps!

Hi Frodo, have you managed to solve your Code 12 error? I am having a similar problem after 4 years.. my error 12 appears with strong sun around noon and about 75% load, after a few beeps (safe mode) it switches back to solar feeding load.

Thanks for all the feedback, I will implement the improvements! Can you please help me with names and contact details of electricians, willing to check my system and issue a Supplementary COC. Any electrician willing to take on this COC job please contact me! You can PM me Cell 083 234 1717

Wow! thanks for all the feedback! Jaco, (i)inside the DC DB box, a 125 A circuit breaker, two DC fuses and Surge protectors. (ii) Oops no earth protection, thanks (iii) Lead acid. yes holes in the box lid and open at the back.

Hi Guys, have a 3kw infini a off-grid DIY system installed following a lot of advice from the forum. I have also been following some of the discussions regarding risk, compliance etc. and want to play my part in at least having a COC issued to certify that my system is in the ball park. I live in the Overberg and have not been able to find a electrician able or willing to help. I am flexible and have a realistic budget set aside for this project. Can you please refer me or contact me regarding a COC Thanks,