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Poppymac

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Ok update. After 12 days of the system working (although still had problem with the usage showing zero in the evening) the system reverted back to the original problem. Eventually after much back and forth with the Solaris people and the installer, the installer decided it was the emeter at fault, it was loose. I tightened screws to find something was amiss, it was ok one second next it wasn't. Then after a few days the emeter stopped working. Eventually it was changed, but now the battery does not run the fridges and freezers overnight - the grid does. Installer says the batteries only kick in if we use .30 to .50kwh, so we will use the grid. Why have batteries if they won't kick in? They did when the system worked for 12 days. Used 1kwh every 4/5 days. Now using 2kwh overnight . 🤔. The inverter readout still does not add up either.
 

plugsandsparks

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My posts 26 and 27 enquired about what is connected to the critical loads circuit, Is this the fridge , freezer you refer to. Without knowing this you will never be able to figure out what is what.

Can you take a pic of the display again
 

Poppymac

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My posts 26 and 27 enquired about what is connected to the critical loads circuit, Is this the fridge , freezer you refer to. Without knowing this you will never be able to figure out what is what.

Can you take a pic of the display again
H yes I can.

It has been changed though so that the only one it goes through is the house not the backup light symbol.

This was done previously and it worked well for twelve days

Then when the emeter was changed, the installer changed it to show the house and the backup.

That's when the usage overnight was 2-3 kWh for the fridge and freezer

I asked to change it back to how it was when it worked for 12 days ie house.

I have just changed it back.

See photo.
 

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Poppymac

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Yes that's not the problem. It does do that. It's at night. The batteries aren't used to run the fridge freezers. The grid is used. I'm hoping that putting it all through the house, then the batteries and not the grid will be used.

Up to now, since the emeter was replaced, the grid had been used throughout the night
 

plugsandsparks

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At night i would expect the batteries to run down powering whatever is needed. As long as the batteries are flat before the Sun comes out, i guess it does not matter
 

Poppymac

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At night i would expect the batteries to run down powering whatever is needed. As long as the batteries are flat before the Sun comes out, i guess it does not matter
Well exactly what I said to the installer.

We have full battery 4.8kw and it's not being used overnight. It discharges to say about 80% as we use the oven and watch TV when the solar is producing less.

At the moment I am using the oven and the solar is powering it along with Some from the battery, with alternating every second or so, using from the grid sending to the grid. Once the oven comes to heat, usage drops and the solar is producing enough .

Once we get only to using only the freezers and fridges it is powered by the grid even though the battery is still 80% full.

That's when the installer vtoldvme the battery wouldn't kick in if the fridge and freezers used less than .30kwh, which I find ludicrous to be honest. Bit sure I believe him.

So tonight I am hoping that as it's all routed to the house, then things will work properly.

See photos with oven onIMG_20210717_180458.jpgIMG_20210717_180455.jpg
 

Poppymac

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Ok still no further forward. On a cloudy day we saw what happened. At 81% the battery powers the fridges and freezers ok. As soon as it hits 80%, the battery goes into 'sleep mode' and power source switches to the grid. No one knows what the problem is - anyone got any thoughts?
 

plugsandsparks

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Can you take a pic of the display when it is in that state, i.e. your are clearly drawing power but the batteries are not contributing
 

BXB

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I haven't had a chance to read this in depth, but the fact that the battery hits 80% and stops discharging could indicate that the depth of discharge setting is too high. Generally the installer sets the system so that 10-20% of the battery is not used, as even though lithium batteries can be discharged very low you buy quite a bit of extra life for them by allowing this buffer. The installer or Solis tech should be able to see the setting remotely. It could be as simple as they thought they were setting it to stop at 80% DoD and in fact were setting it to stop at 80% capacity.

Sometimes a factory reset and reconfigure can help.

Most likely something that has already been looked at, but thought I would mention it!
 

Poppymac

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I haven't had a chance to read this in depth, but the fact that the battery hits 80% and stops discharging could indicate that the depth of discharge setting is too high. Generally the installer sets the system so that 10-20% of the battery is not used, as even though lithium batteries can be discharged very low you buy quite a bit of extra life for them by allowing this buffer. The installer or Solis tech should be able to see the setting remotely. It could be as simple as they thought they were setting it to stop at 80% DoD and in fact were setting it to stop at 80% capacity.

Sometimes a factory reset and reconfigure can help.

Most likely something that has already been looked at, but thought I would mention it!

Thanks both of you. I've got videos but I'm unable to attach them - only photos are showing when I try to attach.
With regards to the settings, it is strange.as before the new emeter was installed (before it gave up the ghost completely) for 12 days it was working perfectly. The system was installed on the 9th June.

I will try and take a photo tomorrow as the battery is at 83% at the moment and is powering the lights and fridges although I have to say that the power is jumping either to or from the grid constantly since we are using just battery power.


Can you take a pic of the display when it is in that state, i.e. your are clearly drawing power but the batteries are not contributing
 

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