EG4 18KPV AND EG4 WALLMOUNT BATTERY UNABLE TO COMISSION OR CHARGE (PROTECTION MODE)

[TM48]

Can you please explain? It seems like the battery is bad?

I doesn't appear to be reading the BMS correctly. As an example the capacity is way off. Also the documentation says to set the battery id to 64 for rs485. Did you follow the documentation?

https://eg4electronics.com/wp-content/uploads/2024/04/BMS-TOOLS-SETUP.pdf

 

[ragaimeena]

That data looks like you aren’t talking to the battery properly.

How should I do it?

 

[DougL]

Can you please explain? It seems like the battery is bad?

That picture shows it thinking the battery has 0 volts and has 0% State of Health. Do YOU think that makes sense?

Didn't you say you have an identical battery? Why not connect the software to it and verify you can see some data which makes it seem like there is data coming from the battery and showing properly in that software?

 

[wpns]

the documentation says to set the battery id to 64 for rs485

The picture shows address 1, in which case the battery will not talk the right protocol.

I’m with @TM48 you should carefully follow the printed documentation step by step.

 

[ragaimeena]

this is it I changed to ID 64, then connected to inverter. followed the turning on sequence, the fault occured then connected the RF45 cable USB to computer and tis is the eror i am getting

 

[ragaimeena]

I am reading another thread for another EG4 battery and had same issue, turned out to be a disloged cable that wires a pre-charge resistor???
does this make any sense to the experts here
please I need help. Thank you ALL

 

[wpns]

this is it I changed to ID 64, then connected to inverter. followed the turning on sequence, the fault occured then connected the RF45 cable USB to computer and tis is the eror i am getting

Well, you are getting sane results from BMStools, so you are making progress!

Have you contacted your vendor and/or EG4 yet?

It does sound like a bad battery, though the error sounds like a shorted inverter DC input. I suppose a missing precharge circuit would show the same error.

You could try precharging with the good battery and switching between batteries using the battery breakers…

 

[ragaimeena]

Well, you are getting sane results from BMStools, so you are making progress!

Have you contacted your vendor and/or EG4 yet?

It does sound like a bad battery, though the error sounds like a shorted inverter DC input. I suppose a missing precharge circuit would show the same error.

You could try precharging with the good battery and switching between batteries using the battery breakers…

how to do that? could you plea walk me through it?

 

[wpns]

Have you contacted your vendor and/or EG4 yet?

how to do that?

Pick up the phone or compose an email to your vendor. This is a warranty issue, and you need to get them to fix it.

how to do that? could you plea walk me through it?

Sure, but please note:

This is not (usually) the recommended method for using batteries or inverters, and is only intended to prove to the knowledgable user that the problem is in the precharge circuit of your PPWM battery. This should not supercede any instructions or debugging you do for EG4 and/or your vendor, and you perform this at your own risk, with full understanding of the battery, inverter, and basic electronics. [I'm not sure this applies, but here we go at your own risk.]

DO NOT turn on the inverter AC breakers, you don't want to charge or discharge the batteries.

Turn off the inverter DC breaker
Turn off both batteries breakers
Turn off both batteries BMS
Connect both batteries to the inverter in parallel.

Turn on the inverter DC breaker
Turn on the "FUNCTIONAL" battery breaker
Turn on the "FUNCTIONAL" battery BMS.

The inverter should power up properly, as you've already done this.

Now:
Turn on the BMS on the "DEAD" battery. This should not trip the BMS out. You've done this before. The battery breaker is off.

NEARLY SIMULTANEOUSLY (first) turn the FUNCTIONAL battery DC breaker OFF
and (second) the "DEAD" battery DC breaker ON.

If the system continues to work, you've used your FUNCTIONAL battery to precharge the inverter capacitors, and your "DEAD" battery to operate the system. This proves that the precharge circuitry in the "DEAD" battery isn't working.

Let us know.

 

[Michigan Solar and ESS]

how to do that? could you plea walk me through it?

Call Signaturesolar.com. They've been great help many times.

 

[ragaimeena]

Pick up the phone or compose an email to your vendor. This is a warranty issue, and you need to get them to fix it.


Sure, but please note:

This is not (usually) the recommended method for using batteries or inverters, and is only intended to prove to the knowledgable user that the problem is in the precharge circuit of your PPWM battery. This should not supercede any instructions or debugging you do for EG4 and/or your vendor, and you perform this at your own risk, with full understanding of the battery, inverter, and basic electronics. [I'm not sure this applies, but here we go at your own risk.]

DO NOT turn on the inverter AC breakers, you don't want to charge or discharge the batteries.

Turn off the inverter DC breaker
Turn off both batteries breakers
Turn off both batteries BMS
Connect both batteries to the inverter in parallel.

Turn on the inverter DC breaker
Turn on the "FUNCTIONAL" battery breaker
Turn on the "FUNCTIONAL" battery BMS.

The inverter should power up properly, as you've already done this.

Now:
Turn on the BMS on the "DEAD" battery. This should not trip the BMS out. You've done this before. The battery breaker is off.

NEARLY SIMULTANEOUSLY (first) turn the FUNCTIONAL battery DC breaker OFF
and (second) the "DEAD" battery DC breaker ON.

If the system continues to work, you've used your FUNCTIONAL battery to precharge the inverter capacitors, and your "DEAD" battery to operate the system. This proves that the precharge circuitry in the "DEAD" battery isn't working.

Let us know.

Thank you
Should I change the battery ID on the DEAD battery to #2 or leave it as is #1

I fully understand and agree with all the disclaimers and do appreciate your patience, knowledge and help

BTW I started a claim but signature solar is giving me hard time (low tier tech support etc....)

 

[zanydroid]

Thank you
Should I change the battery ID on the DEAD battery to #2 or leave it as is #1

I fully understand and agree with all the disclaimers and do appreciate your patience, knowledge and help

BTW I started a claim but signature solar is giving me hard time (low tier tech support etc....)

At this point you should tag signature solar rep on this forum.

The forum already literally did Level 2 tech diagnostic.

And you were nice about it and didn’t manufacture dramatic title on the thread to get attention

 

[wpns]

Thank you
Should I change the battery ID on the DEAD battery to #2 or leave it as is #1

I fully understand and agree with all the disclaimers and do appreciate your patience, knowledge and help

BTW I started a claim but signature solar is giving me hard time (low tier tech support etc....)

Do not connect any battery comms, just set the inverter to 'open loop' or 'lead acid' with appropriate settings for LFP.

 

[ragaimeena]

At this point you should tag signature solar rep on this forum.

The forum already literally did Level 2 tech diagnostic.

And you were nice about it and didn’t manufacture dramatic title on the thread to get attention

Thank you
How do I tag them?

 

[zanydroid]

Thank you
How do I tag them?

@ Tag @zapper or one of the @eg4 … accounts. Not sure if they’re working long weekends though

 

[ragaimeena]

At this point you should tag signature solar rep on this forum.

The forum already literally did Level 2 tech diagnostic.

And you were nice about it and didn’t manufacture dramatic title on the thread to get attention

@Zapper77

 

[Zapper77]

@Zapper77

Did Signature Solar give you a ticket number?

 

[SignatureSolarJess]

Thank you
How do I tag them?

Hi! If you'd like to shoot me a dm with your contact info, I can get you connected!

 

[Quattrohead]

Hi! If you'd like to shoot me a dm with your contact info, I can get you connected!

Do you two know it is Sunday?

 

[ragaimeena]

Did Signature Solar give you a ticket number?

No ticket number given. Thanks

 

[SignatureSolarJess]

No ticket number given. Thanks

Sending you guys the ticket number!

 

[ragaimeena]

Sending you guys the ticket number!

Thank you. I hope this can be resolved. It is a nice battery (the one that worked) but also expensive

 

[SignatureSolarJess]

Good morning! I just wanted to follow up with you! Please let me know if I can be of further assistance. I'm here to support you!

 

[ragaimeena]

Good morning! I just wanted to follow up with you! Please let me know if I can be of further assistance. I'm here to support you!

so I have emailed a couple of pictures to solar signature person. They are asing me to isolate the battery and turn it on etc... I feel this process is taking so long while the problem seem to be obvious but I will do as they told me when I get back from my current busness trip

 

[SignatureSolarJess]

so I have emailed a couple of pictures to solar signature person. They are asing me to isolate the battery and turn it on etc... I feel this process is taking so long while the problem seem to be obvious but I will do as they told me when I get back from my current busness trip

I understand some steps may feel unnecessary, but they are required for documentation purposes in order to escalate the case to the manufacturer for warranty support. We'll get you taken care of!