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Mike Dorsett avatar image
Mike Dorsett asked

Multiplus compact not accepting AC in

After a few years of service, my multiplus 24/1600/40 is no longer taking power from the AC input. The generator works fine with another unit. Whilst upgrading the installation, I've managed to find time to inspect the AC board, and there is visible corrosion round the ac relay pins. Testing the coil resistance of the relays seems to indicate that 2 relay coils have also gone open circuit. The relays are Finder 24vdc, part no 49.91.7.024.2310. Trying to find a source for these - can any one help?

Multiplus-II
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wkirby avatar image
wkirby answered ·

That number is a bit peculiar. I can't "find" any actual relays in the 49 series.
The way I understand it is that the 49 series is a DIN mount relay socket or "interface module". Then within the 49 series I don't see a type 9x.

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Mike Dorsett answered ·

The part number came off the relay body, however, I've managed to trace an available replacement as 45.91.7.024.0311. The vendor has a min order value of $100, for a $4 part. I don't want to order 25 of these....

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Mike Dorsett answered ·

@mvader (Victron Energy) Bula: Would the relays for repairing the AC board be available from Victron please? I would need 3pcs.(I think current part no finder 45.91.7.024.0311).

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mvader (Victron Energy) avatar image mvader (Victron Energy) ♦♦ commented ·
Hi Mike,


The unit is still under warranty I suppose? Then best would be to file an RMA (or let your distributor do that) and in there make a note that you’d be happy to just replace those relays.

Though don’t be surprised if we do not have them available; would be great if we had but often do not.

Note that with corrosion, often more has failed, like the pcb tracks.

Hope that helps, I wish its solved soon!

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