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Chris avatar image
Chris asked

Completely unresponsive dead Quattros - good battery - good AC

Setup for backup power to essential loads on site. 3No. Quattro 5k units - 3 phase config.

Rolls 4v tubular lead acid batteries. 48v system. Approx 5 yrs old.

Some sort of "event" has caused the system to activate (client not home).

Low battery shut-down threshold was set quite low (37.2) and on attending site found batteries at 44v, so i suspect the system hasnt hit the low cutoff voltage. (restart voltage 43.6)

Managed to force a charge from the one good Quattro (Slave on L2 reconfigured to standalone config) and raised the batts up to 53v

2 Quattros remained utterly unresponsive (master on L1 phase and slave on L3). Confirmed AC and DC good. Attempted complete plugs out power down and power up. Nothing.

MK2 USB wont see the units.

Attempted to factory default using the DIP switches etc.

Nothing.


MultiPlus Quattro Inverter Charger3 phase
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4 Answers
wkirby avatar image
wkirby answered ·

Internal DC fuse inside the Quattro perhaps?

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freddyuk avatar image
freddyuk answered ·

Are you using CCGX?

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boekel avatar image
boekel answered ·

Did you disconnect the VE.bus cables from Venus/ CCGX? checked voltage on battery terminals?

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Olivier Hendrikx avatar image
Olivier Hendrikx answered ·

Have the same issue with two quattro 12/5000. Did you found a solution?

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boekel avatar image boekel ♦ commented ·

Did you try disconnecting VE.bus cables?

(I'm also curious if and how the problem was solved)

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