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I have a problem with my U Power (Power Jack) 48v, 15000w split phase inverter. (120/230V output).

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(@marcelino-oleana)
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Joined: 4 years ago
Posts: 5
Topic starter  

Dear Sean,

 

I have a problem with my inverter.

I’ve a U Power (Power Jack) 48v, 15000w split phase inverter. (120/230V output)

I’ve taken it from the wall to repair the transformer bolt Isollator.

When it was repaired, I installed it again.

 After connecting the battery and output wires I started the inverter in po save mode on.

During the starting of the inverter I remember that I was running the inverter in power save mode off and I’ve switched from power mode on to off mode and directly to Power save off.

After doing that, the red lamp (Alarm), the green lamp (BTY) and the green lamp (INV) on the inverter begin to flickering and the inverter did not start any more.

The book is not explaining how to reset the alarm.

I took the battery wires off for 35 or 45 minutes so thinking that It will reset but after connecting the battery cables back the same thing was happening again.

I think that maybe something is burned inside the inverter.

 

Can you find out of my information what could happen?

Do you know where I can get parts? If parts needed to replace?

 

Thanks for your help.

 

Best regards,

 


   
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(@sid-genetry-solar)
Member Admin
Joined: 4 years ago
Posts: 2890
 

Can you provide a short video showing what happens when you turn the inverter on?  A few internal photos would also help start to pinpoint what's wrong.


   
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(@marcelino-oleana)
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Joined: 4 years ago
Posts: 5
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(@marcelino-oleana)
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Joined: 4 years ago
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Topic starter  

Dear Sid,

I have send you a short video, and tomorrow I will send you some pictures

Thanks,


   
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(@sid-genetry-solar)
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Joined: 4 years ago
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Well, for once the mental picture I had matches what is actually happening 😉.

Right off the top of my head, I'd suspect an internal wiring problem.  Not sure exactly what it is at the moment; some internal photos should help figure out what's going wrong.  Looks like the power supply is getting overloaded. 

Could possibly be a failed cooling fan, particularly if it's plugged into the control board.


   
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(@ask-first)
Eminent Member
Joined: 4 years ago
Posts: 22
 

Do you guys upgrade these power jack inverters bought of eBay? If so how much?


   
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(@sid-genetry-solar)
Member Admin
Joined: 4 years ago
Posts: 2890
 
2 hours ago, ask first said:

Do you guys upgrade these power jack inverters bought of eBay? If so how much?

Sorta yes...sorta no.  The more we try to do with the inverters, the less of the PJ originals can be used--making it more or less pretty much a waste of time.  Here after this next shipment of inverters, we'll have a 100% custom design...none of which is backwards-compatible with a PJ inverter.  (Except for the transformer--which is the weakest part of the whole inverter.)


   
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(@marcelino-oleana)
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Topic starter  
Posted by: @sid-genetry-solar
Well, for once the mental picture I had matches what is actually happening 😉.

Hi Sean,

I will open the inverter on Monday and make some pics for you.

I'll check also the fan.

There is an an adapter or something else plugged i by the sock of the fan before it go to the control board.


   
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(@marcelino-oleana)
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Topic starter  
Posted by: @sid-genetry-solar
Sorta yes...sorta no. The more we try to do with the inverters, the less of the PJ originals can be used--making it more or less pretty much a waste of time. Here after this next shipment of inverters, we'll have a 100% custom design...none of which is backwards-compatible with a PJ inverter. (Except for the transformer--which is the weakest part of the whole inverter.)

The plastic insulation on the transformer bold was broken and I fixed it.

Maybe I have tight the bold/nut to fast.

I will check it also on Monday 


   
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(@dickson)
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Joined: 4 years ago
Posts: 1058
 

 

Do you guys upgrade these power jack inverters bought of eBay? If so how much?

I  think  a  new GS  mainboard with  bead  on  cables  and diodes  on mosboard  is  require to make the GS upgrade to work .  Some PJ  transformer will not work with GS upgrade   .    Powerjack  in china  made a new  replacement  10.3  control board  that  will  upgade  older PJ  inverter with  new  mosboards and  mosfets and frequency driver .

You  need to  send  PHOTOS   of your  older PJ  inverter  to see if mainboard  need to be change  also  .   No  instructions   for  installation  is sent with the replacment parts . It  is  very easy  to  mis wire  the  10.3 board  because  there a many  different  10.3 board  for  different  PJ design  .    


   
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(@sid-genetry-solar)
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Posted by: @dickson
I think a new GS mainboard with bead on cables and diodes on mosboard is require to make the GS upgrade to work .

Half band-aid; works on 6kw and less.  These fixes aren't sufficient for any larger wattage inverters (GS 12kw, etc.)--which is why we're fully ditching every last bit of the PJ design, as it can't be used fully and successfully.

 

Posted by: @dickson
Some PJ transformer will not work with GS upgrade

While they're all rather poorly specced, all of them can be used...just with varying degrees of success.  In my opinion though, it's kinda a waste of money to replace everything else, and still have the same ol' major bottleneck.

 

Posted by: @dickson
Powerjack in china made a new replacement 10.3 control board that will upgade older PJ inverter with new mosboards and mosfets and frequency driver .

Frankly....there have been no significant changes to the PJ design since version 4.  Just repackaging the same design different ways.  Latest FETs are really weak though (60A vs 180A); definitely not in favor of that change.


   
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(@dickson)
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Joined: 4 years ago
Posts: 1058
 

 works on 6kw and less.  These fixes aren't sufficient for any larger wattage inverters (GS 12kw, etc.)--which is why we're fully ditching every last bit of the PJ design

Upgrading  the  15kw PJ inverter  will not  work  and  a waste of money .   I think the  PJ  20kw inverter  is actually  7 kw  continuously on inductive load  .  The  25 kw PJ is 8 kw  continuously  on inductive load  and the PJ  30kw  is  9 kw actually  .    This is base on running my  8kw  PJ  that is now 2 years on  220vac  at less than  3000 watts  and my  15kw PJ  at less than  5000 watts  with no  problem.   


   
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(@ituscol)
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Joined: 3 years ago
Posts: 15
 

good afternoon, bought a UPower (power Jack ?) 48v 15kw dual phase, with charger inverter, I live in Colombia and the trip might have taken a toll on it and I made the mistake of not opening to check that all was in place before connecting to my power bank and turn on, when I turned it on heard and saw sparks so I turned it off and opened it and surely the control board was lose and made a short. Put everything in place made a bridge where the board was burned, checked mosfets the ac side were all burned, ordered and replaced same exact boards, also ordered a control board but sent me upgraded not exactly the same board but power jack said that it will work on my inverter also inspecting the board under the capacitors there was also a landing burned up, put a jumper, so everything in place the inverter turns on en seems ok, connect a small soldering iron and all ok, but if I add my 1800 watt heat blower it an alarm goes on telling me that load is 100% and in ten seconds it would turn off and it does, I also notice that the fan doesn't turn on even if I apply heat to the sensor on the transformer until the alarm goes on so the sensor work but the fan doesn't turn on. Please help me thanks.


   
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(@sid-genetry-solar)
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Joined: 4 years ago
Posts: 2890
 
Posted by: @ituscol
I also notice that the fan doesn't turn on even if I apply heat to the sensor on the transformer until the alarm goes on so the sensor work but the fan doesn't turn on.

Is the fan connected to the control board, or is it soldered to a different heat sensor?

Most of the previous PJ inverters had a click switch glued to the transformer that controls the fan, which is completely separate from the temperature sensor that causes the inverter shutdown.

 

Posted by: @ituscol
connect a small soldering iron and all ok, but if I add my 1800 watt heat blower it an alarm goes on telling me that load is 100% and in ten seconds it would turn off and it does,

Did you copy the "DIP switch" settings from the old control board to the new control board?  If these are not set, it will overload and shut down at very low loads.

(switch circled in red here)

Untitled2.thumb.jpg.1a59354dfdb8dd8bbeddf6e6a0c102fd.jpg

 


   
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(@ituscol)
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Joined: 3 years ago
Posts: 15
 

power Jack assured me that it was all set for 48volts and 15kw, but yes I checked and they are set the same, and don't know where to check for the fan circuit. the fan is connected to a sensor on the transformer and the mosfets on the ac side


   
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