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screwdriversteve avatar image
screwdriversteve asked

Generator warm up and cool down not functioning on Cerbo gx and Quattro 24/5000

I have connected my generator auto start function to my GX device and Is working With the exception of the Warm up and cool down Function Period I have upgraded the Quattro To firm 508 And as well the latest firmware In the GX device. I have Checked All the settings As well as Other posts And I cannot seem to find A solution. Perhaps I need to use The relay contacts on the Quattro And not the GX device?

generator auto start
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screwdriversteve avatar image
screwdriversteve answered ·
Just tested the generator cool down and is now working properly... the AC input must be labeled Generator in order for the GX device to do the cool down.
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derrick thomas avatar image
derrick thomas answered ·

Check to see if there is a MK3 update for the cerbo. The new generator features will not function unless you also update the MK3 driver of the cerbo.

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screwdriversteve avatar image
screwdriversteve answered ·

Thanks Derrick for the prompt reply I will check the MK3 next time I am at the boat. However the MK3 is only used for communicating with the device via my PC the GX device and Quattro are linked with the victron net. I believe I may have stumbled across the answer but I haven't had a chance to confirm it yet. I believe the AC input needs to be labeled generator. If this is the case that's unfortunate because I have a manual shipshore switch in front of the inverter so when I am connected to shore power it will think the generator is running

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derrick thomas avatar image derrick thomas commented ·

I am not referring to the MK3 adapter. The cerbo has an MK3 driver which it uses to communicate with the multi/quatro via ve.bus. as far as wether or not the ac input needs to be labeled as 'generator' in order for the warm up and cool down to function I can't say for sure, but I wouldn't think that would matter. What the label is on the ac input shouldn't have any effect on the generator start/stop logic being applied to the relay. If I am mistaken I am sure someone will chime in and correct me.


To check the MK3 driver version go to the Cerbo GX device list/inverter/device and scroll down to MK2 version. If an update is available it should show there.

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screwdriversteve avatar image screwdriversteve derrick thomas commented ·

Thanks I just checked that remotely and it is up to datescreenshot-20240102-165628-chrome.jpg

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Paul B avatar image
Paul B answered ·

as you have a quattro, wire the generator to ac2 in and shore power to ac1 in, and do away with your manual change over switch.

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screwdriversteve avatar image screwdriversteve commented ·
Rewiring a 60 ft boat is not really an option. I have multiple Shore connections a 17 KW generator and balancing Transformers. Major Enterprise to redo it all.
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