SolarBatt456
New Member
- Joined
- Apr 18, 2022
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- 7
Hi does anyone know how to rectify growatt 5000es inverter's fault 04 error ( think some kinda battery error). It's a grid charging system with no solar panels connected at the moment. Thank you
Help for Growatt 5000es
- Thread starter SolarBatt456
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Vigo
Solar Addict
What are the batteries, what settings are you using in the Growatt for them, and what else is hooked to the batteries?
BenFromSignatureSolar
Solar Addict
20 most likely
BenFromSignatureSolar
Solar Addict
Can you post your battery specs? If communication is not the issue, it's just a matter of needing to charge your batteries
deonbez
New Member
System Summary:
Growatt SPF 5000 ES inverter.
Hubble AM-2 battery.
No solar panels.
Using CAN comms between Growatt and battery.
Battery stays at around 49.1V (as per inverter display) and SOC on inverter shows 52%.
Inverter only charging at around 1.5A but is set to charge at 30A from grid and combined solar and 60A.
Setting 1 UTL
Setting 14 CSO (tried SNU as well)
Did complete restart of inverter after disconnecting battery as well. No change.
Any insights would be appreciated?
Growatt SPF 5000 ES inverter.
Hubble AM-2 battery.
No solar panels.
Using CAN comms between Growatt and battery.
Battery stays at around 49.1V (as per inverter display) and SOC on inverter shows 52%.
Inverter only charging at around 1.5A but is set to charge at 30A from grid and combined solar and 60A.
Setting 1 UTL
Setting 14 CSO (tried SNU as well)
Did complete restart of inverter after disconnecting battery as well. No change.
Any insights would be appreciated?
Vigo
Solar Addict
Check setting 49 in case you accidentally changed it while cycling through menus or something.
I think the 04 code and the 1.5a charging, taken together, indicate the problem originates with the battery. Because 04 only occurs while discharging, and could be caused by poor wiring/connections on your part. But the 1.5a charging would not be a symptom of bad wiring/connections anywhere between the inverter and the bms, and would almost certainly have to be 'requested' by the BMS through comms as a reaction to something it is seeing between it and the cells.
To test that, set setting 01 battery type to.. anything else really, unplug the comms, and see if it starts pushing more current into the battery (and turn it back off shortly after when you're done extracting the diagnostic value from it). If it does start charging at higher current, you know it's either a communications compatibility problem, or some problem originating inside the battery case (bms reacting to bad connection, bms reacting to bad cell, malfunctioning bms, etc).
I majorly edited this post multiple times, so hopefully this version is clear enough.
I think the 04 code and the 1.5a charging, taken together, indicate the problem originates with the battery. Because 04 only occurs while discharging, and could be caused by poor wiring/connections on your part. But the 1.5a charging would not be a symptom of bad wiring/connections anywhere between the inverter and the bms, and would almost certainly have to be 'requested' by the BMS through comms as a reaction to something it is seeing between it and the cells.
To test that, set setting 01 battery type to.. anything else really, unplug the comms, and see if it starts pushing more current into the battery (and turn it back off shortly after when you're done extracting the diagnostic value from it). If it does start charging at higher current, you know it's either a communications compatibility problem, or some problem originating inside the battery case (bms reacting to bad connection, bms reacting to bad cell, malfunctioning bms, etc).
I majorly edited this post multiple times, so hopefully this version is clear enough.
Last edited:
deonbez
New Member
deonbez
New Member
Today I disconnected the battery and used separate 56V battery charger to check if it is an inverter or battery issue.
Before connecting charger to battery, I set charger to 54.4 V current limited to around 30A. The battery charged at 33A. So it seems to be in inverter issue or setting.
Before charging it full, I connected it back to the Growatt inverter and tried to force a charge by setting inverter to battery type user (setting 5 to USE) and enabling equalize (setting 43) and equalize interval 1 day (setting 47) and level 54.4V (setting 44) not to damage the battery.
I the initiated the equalize for immediate to ON (setting 48).
Utility charging (setting 49) is 0000 which means charging from utility all day so this could not be prevent battery from charging.
Although the charge light on inverter was flasing, the inverter still only charged at 0.5A and no indication of Equalization was present on display (Eq should be displayed).
Another discovery is that battery measures 52V with multimeter although inverter shows battery as 49.1V. This might point to a bad internal shunt connection?
All this points to a faulty inverter as it is still brand new and never changed over to utility to correctly charge the battery.
Any last ideas/insights would be appreciated?
Last edited:
Without solar and running from the inverter you will get no charging from utility. You have to be in AC bypass mode. So what are your settings for output source priority and also battery charging preference?
deonbez
New Member
Turn off equalize. That's only for old acid batteries.
LifePO4 doesn't need that.
Turn setting 1 to SBU.
2 USR2
Bulk charging 54V
From battery to grid 47V
From grid to battery 51.5V f.ex.
Total charge 30A (enough per inverter)
Grid charge 16A suggestion if you are going to use that.
If you have panels, put charging to Only Solar, OSO.
LifePO4 doesn't need that.
Turn setting 1 to SBU.
2 USR2
Bulk charging 54V
From battery to grid 47V
From grid to battery 51.5V f.ex.
Total charge 30A (enough per inverter)
Grid charge 16A suggestion if you are going to use that.
If you have panels, put charging to Only Solar, OSO.
Vigo
Solar Addict
So if your inverter and battery are very close together just use multimeter set to DC volts, and measure from the battery positive terminal to the inverter's positive terminal, and then do the same on the negative side.
A difference in voltage would indicate bad connection or even a bad piece of wire (unlikely).
Voltage drops proportionally to current flow, so since you can only get 0.5A to flow through those wires, it would take a truly horrendous connection to result in the >2v difference. But it might also explain what's happening. Make sure the large metal bars you are bolting down to on the Growatt don't feel 'loose'.. if one broke loose from the board somehow that would be an easy 'stop here, repair/replace inverter' scenario.
If you don't find the voltage drop on 'your' wiring, you are probably right that there is a bad connection inside the inverter and if it is new you may just want to try and get it exchanged.
I totally agree with your diagnostic process so far. Checking that the BMS will allow 30a from a different source, good idea. Disabling communications, good idea. Changing battery settings to manual control, plus 'forcing' an EQ, also good idea. @LydMekk , in this case trying to do a manual EQ is just trying to prevent the Growatt from immediately switching from the absorption charging voltage to the float voltage because it sees such a low current. At the end of the day with no more than 1a flowing we can call it whatever we want but we aren't 'equalizing' anything. ?
A difference in voltage would indicate bad connection or even a bad piece of wire (unlikely).
Voltage drops proportionally to current flow, so since you can only get 0.5A to flow through those wires, it would take a truly horrendous connection to result in the >2v difference. But it might also explain what's happening. Make sure the large metal bars you are bolting down to on the Growatt don't feel 'loose'.. if one broke loose from the board somehow that would be an easy 'stop here, repair/replace inverter' scenario.
If you don't find the voltage drop on 'your' wiring, you are probably right that there is a bad connection inside the inverter and if it is new you may just want to try and get it exchanged.
I totally agree with your diagnostic process so far. Checking that the BMS will allow 30a from a different source, good idea. Disabling communications, good idea. Changing battery settings to manual control, plus 'forcing' an EQ, also good idea. @LydMekk , in this case trying to do a manual EQ is just trying to prevent the Growatt from immediately switching from the absorption charging voltage to the float voltage because it sees such a low current. At the end of the day with no more than 1a flowing we can call it whatever we want but we aren't 'equalizing' anything. ?
Finca Life
New Member
The Growatt SPF5000ES doesn't charge from utility by default. I think it's setting 19 you have to change
deonbez
New Member
After back and forth with the Growatt supplier, the brand new inverter was returned for testing and found to be faulty.
It will be replaced, case closed
Thanks for all the inputs and suggestions.
Vigo
Solar Addict
THANK YOU for the update. There’s nothing worse than having a problem, finding multiple threads on the internet about the same problem, and noone ever comes back and posted what fixed it!
You have fixed your inverter AND benefitted all future readers. ??
You have fixed your inverter AND benefitted all future readers. ??
