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Forum Index : Solar : Victron Multiplus Inverter repair: "low battery"

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olNick
Newbie

Joined: 11/03/2020
Location: Greece
Posts: 14
Posted: 10:01am 12 Mar 2020
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Victron Multiplus Inverter repair: "low battery"

Hello  again, Nick here,

Have 2 older Victron Multiplus inverters, 12V/2500VA inverter chargers.
Initially bought to parallel them. Never was able to (the docs wrt  jumper config was wrong, gave up).

So, ok, I have redundancy. The first inverter stopped working after a couple of years, with a low battery led blinking.
Swapped over to the second inverter, and all was good, until recently, where I cooked it during battery maintenance (forgot I left array connected, and it smoked, still beating my self for doing this). A couple of caps at least, blew in the output stage.

Main Question is:
In general, is a "low battery" function implemented?What can I check for this?
Inverter has 3 boards.

The control/logic board has the eeprom with firmware, led indicators and a couple of discrete components that I should be able to check.

The intermediate board has the battery lugs, big dc busbars, fuse, circuit breaker, relays etc, and the 8 pin ic dc-dc? I'll get the ic type later.

The output board with the mosfets and drivers is sandwiched between the 2 toroids and I'd prefer to check that last.

Note: After cooking the second inverter, I swapped the control board the low bat inverter and still got low batt, possibly implying it's not the control board.

Swapped the intermediate board and all leds started blinking :-(

have stopped here,

Victron Greece say buy a new inverter. Victron Netherlands say we only sell, talk to a distributor.

regards,
Nick
PS I wish I knew about your Ozverters, Warpverters etc, 6 months ago.
 
Arthurl
Newbie

Joined: 06/04/2020
Location: Greece
Posts: 2
Posted: 07:46am 12 Apr 2020
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Hello Nick,

I have been repairing inverters for quite a while now.
I'm a troubleshooter for industrial and business equipment.
i might be able to repair your Victron.

Please pass on a  message.

Regards


Arthurl
 
olNick
Newbie

Joined: 11/03/2020
Location: Greece
Posts: 14
Posted: 06:46pm 12 Apr 2020
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Hi Arthur,

Sounds good Arthur. I'm in Crete. Where are you.
Maybe send me a pm with your cell and we can talk.

geia,
Nick
 
Arthurl
Newbie

Joined: 06/04/2020
Location: Greece
Posts: 2
Posted: 04:14am 13 Apr 2020
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Hello Nick,

Please check your pm messages.

Regards

Arthur
 
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