Faac c721 shorting power on mains

[Gatehelp]

Hi, I have installed a faac c721 with 4 Photocells and everything we connect the transformer it trips the power in the house. We have tested and we get 250v but cannot understand why it keeps shorting the circuit. The c721 is just sat on driveway can't get around it. Has anyone noticed problems with this before - the transformer could just be a smoke screen it's brand new only a couple of weeks old. Faac have said send it back for testing but that's a nightmare with all the blockwork settled back in. I have the nylon racking off also. Any help would be grateful.

 

[DPG]

With this one -

The opener looks like it only takes about 2 Amps.

 

[UNG]

With this one -

I think fitting an RCBO for the gate circuit would have been a better and more prudent option, kitchen socket circuit and a gate circuit on the same RCD could be problematic if the RCD trips, seen it before family go away on holiday and come back to a freezer full of defrosted food because the gate circuit developed a fault

 

[paume70]

Hello, I have a similar problem with a different model of gate opener (FAAC 740d).

The reason for shorting the mains in my case turned out to be a blown circuit board.

Besides having to replace the board I would like to know if there is anything I can do to prevent this from happening again in the future.

My gate opener shares the circuit with other devices and the circuit is downstream a 16A "thermal breaker".

After reading this thread I realize I should had used a 6A instead, but I am still wondering if this alone could had caused the problem.

There is a fuse on the board that is still intact after what could had caused a fire inside the gate opener enclosure.

The transformer also has a suspicious appearance, I don't know if that could had been the cause or a consequence of the meltdown.

I would appreciate if anyone could offer me any ideas of what could had happened.

Thank you