MultiPlus 12/3000/120-50 120 Temperature Sense error and Battery Temperature alarm

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Dave Herder asked Sep 9, '20

MultiPlus 12/3000/120-50 120 Temperature Sense error and Battery Temperature alarm

I have an ongoing problem with what seems to be erroneous High Temperature alarms on the Multiplus 12/3000/120-50.

The unit details:

Product	MultiPlus 12/3000/120-50 120V
	Firmware version	475
	Last connection	5 minutes ago
	Product id	2702
	VE.Bus connection	VE.Bus
	Hardware configuration	Single unit
	VRM instance	0

Things I've done to troubleshoot:

-- checked all terminal connections... everything is tight.

-- manually measured surface temperature of multiplus, which ranges between 20C and 30C.

-- upgraded firmware to latest version

-- temp alarm doesn't seem to have a pattern for which it gets tripped. When the alarm goes off, there doesn't seem to be excessive load on the system.

-- I observed that the fan on the unit does not come on and I thought it was a faulty fan. I added a large load to the system by turning on the AC unit when inverting and the fan promptly came on. So, I'm thinking the fan is working as it should.

-- the unit is installed in a bench seating area, which is enclosed. I thought ventilation was a problem, so I added 4 cooling fans and external ventilation, still received alarms.

Any ideas on what else to check?

MultiPlus Quattro Inverter Charger multiplus ve.bus Temperature Sensor alarm

screen-shot-2020-09-09-at-70051-am.png (53.2 KiB)

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Modifications Space

Node Red Space

Answer 1 · 2020-09-24T09:52:36Z

paulgel answered · Sep 24, 2020 at 09:52 AM

I have the same issue on the same model Quattro. My firmware is up to date as of this morning. Any updates? Is this a battery temperature issue or something else?

dbb679ce-d944-4383-b12e-cbc4d260a6bb.jpeg (58.4 KiB)

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Answer 2 · 2020-10-12T05:55:17Z

Michael Schmidt answered · Oct 12, 2020 at 05:55 AM

Same Error here on Multiplus 12/3000/120

Input is used for BMS connection

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Answer 3 · 2020-11-01T15:03:38Z

Dave Herder answered · Nov 01, 2020 at 03:03 PM

Shout out to the awesome guys at AM Solar in Oregon for helping me figure this issue out!

The main cause was due to enabling DVCC in the Color Control unit. I had previously tested this out and had disabled the option but the problem persisted, but did not know that if DVCC is enabled (and then you want to subsequently disable it later), you need to follow a Reset and re-discovery procedure to truly disable the setting.

Tip: For those experiencing the issue, look at the AC Input Current charts in VRM. Here's a screenshot of what input current looked like before:

And now after DVCC is disabled properly:

screen-shot-2020-11-01-at-70121-am.png (124.2 KiB)

screen-shot-2020-11-01-at-70135-am.png (80.0 KiB)

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gamechanger commented · May 17, 2023 at 10:13 AM

How you dissabled, everywhere stands its activated and i cant stop it.

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Answer 4 · 2021-07-20T12:53:18Z

rostyvyg answered · Jul 20, 2021 at 12:53 PM

I have the same error here on Multiplus 12/3000/120. Latest firmware. I have a Victron Battery Monitor BMV-712 with a separate temperature sensor connected to it and DVCC enabled in Cerbo GX. The Cerbo always selects the BM temp sensor when selection is set to "Automatic". The temp sense warning comes up randomly regardless of the charger state ( connected to AC, disconnected to AC, inverting). Checked the battery temperature with an infrared thermometer - it is fine. The charger fan is not running and the charger itself is at room temperature. I do not want to disable the DVCC because I have solar controllers as well and like how the whole system works. I did an Internet search and it appears quite a widespread problem and Victron is not responding to it.

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Answer 5 · 2021-08-02T12:46:19Z

neildilgee answered · Aug 02, 2021 at 12:46 PM

I have the same issue on my multis ( parallel system)

Bith are over heating because the fans are not kicking in.

Victron please help!

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Answer 6 · 2023-05-17T10:06:52Z

gamechanger answered · May 17, 2023 at 10:06 AM

Same Problem i need help to solve nothing in the manual !

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Answer 7 · 2023-07-02T15:17:54Z

jesse-proudman answered · Jul 02, 2023 at 03:17 PM

I also seem to have this issue.

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Answer 8 · 2023-07-26T14:24:35Z

tdentel answered · Jul 26, 2023 at 02:24 PM

I'm having the same issues. High Temp Alarm, shut down, 30 seconds it restarts.

Minimal load, low ambient temp.

Where is Victron's support??

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Answer 9 · 2024-01-05T16:23:05Z

rostyvyg answered · Jan 05 at 04:23 PM

Victron needs to put its act together when it comes to resolving these issues. The local dealers are not equipped to solve such odd problems and there is no way to open a direct communication line with the manufacturer. So frustrating!

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