Hi. I have a 12V Qtuattro that is playing up; it is producing spikey voltage in the range 160V to 310V and tripping out whenever it is inverting. I bought it through a dealer in Martinique and he sourced it from a dealer in France, but neither of them are responding to emails. It is about 3 years old and still under warranty. I have been advised that it could be the Transfer Switch, which is like a big relay on the circuit board but this is yet to be verified. So basically I'm trying to find a Victron tech - hopefully somewhere on the Yucatan in Mexico - who I can contact to try to sort it out. Thanks in advance!