question

saint-thy avatar image
saint-thy asked

brand new multiplus doesn't start

I have a Victron Multiplus Compact Inverter 24/2000/50- Newly unboxed and installed. There is absolutely no power to the unit, not a flicker. Any suggestions as to what this can be? All the wiring is correct and switches on and Dip switches in the right places- default

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Jason - UK avatar image Jason - UK commented ·
What are you using to power the unit? From DC batteries, from AC mains, or power available form both?
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Jason - UK avatar image Jason - UK commented ·

@Saint Thy Im not sure of you have one but make sure the remote link is in place and connected correctly. inkedwhatsapp-image-2022-05-16-at-104008-am-li.jpg

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jhthy avatar image
jhthy answered ·

Hi Jason,

No remote link.

As for power, relying on the DC battery power that is part of the solar system.

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Jason - UK avatar image Jason - UK commented ·
What is the static DC voltage of the batteries whilst connected to the unit? If the voltage is over / under the design min / max voltage, it wont power up. Worth testing the voltage as when you first connect them, the capacitors in the Multi pull a ton of power to charge them, even with the unit off. Once the unit has been connected for a moment, the capacitors are good but it could have left the batteries too low to then run the unit. Whe I connected my batteries for the first time to the Multi, made me crap myself as I used the 200A fuse to make the final contact, not the battery isolator and the spark woke me up to say the least,
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Jason - UK avatar image Jason - UK commented ·

@jhthy

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csc avatar image
csc answered ·

Are you sure it's not working or is it a question of leds not blinking ? Mine simply arrived with the led ribbon disconnected inside. Scratched my head until a nice forum guy saved it from going back to seller

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jhthy avatar image
jhthy answered ·

very sure. There is absolutely nothing happening with it. Now I'm beginning to think, does it require external power to power up? . As in AC in, or can it power up from the solar batteries, alone that is connected to it ?

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Jason - UK avatar image Jason - UK commented ·

@jhthy have you changed any of the dip switches?

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jhthy avatar image jhthy Jason - UK commented ·
checked dip switches and settings. these are correct as per manual instructions
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Jason - UK avatar image Jason - UK jhthy commented ·
@jhthy With the batteries connected, what voltage are you getting on the 2 terminals inside the case between negative and positive? Make sure to use insulated probes on a multi-meter as not to risk touching a 2 contacts at the same time with the same probe.
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jhthy answered ·

So, It has just dawned on me. Under the installation guide list of what is included and what is not included. It lists fuse and fuse holder, not included. I think this is the problem. So I take it does means we need to buy a fuse and fuse holder? Does this go between the positive stud on the inverter and the auxilary stud?

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Jason - UK avatar image Jason - UK commented ·

The fuse remains between the positive and the batteries.

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jhthy avatar image jhthy Jason - UK commented ·

@jason, do you have an image of the fuse that is required?


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jhthy avatar image
jhthy answered ·

@jason, do you have an image of the fuse that is required?

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Jason - UK avatar image Jason - UK commented ·

@jhthy bottom left is the fuse I believe comes fitted as part of the unit. Test the continuity of the fuse to make sure it hasn't failed as they are only 150amp I believe (someone correct me if I am incorrect)



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Jason - UK avatar image Jason - UK commented ·

I cant find the rating of the fuse for the 24v compact multi but I think it is 150A1652717108260.png


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